clase 14/02/23

T7/guided/role-collections/ansible.cfg

@@ -0,0 +1,9 @@
+[defaults]
+inventory=./inventory
+remote_user=devops
+
+[privilege_escalation]
+become=True
+become_method=sudo
+become_user=root
+become_ask_pass=False

T7/guided/role-collections/bck.yml

@@ -0,0 +1,19 @@
+---
+- name: Backup the system configuration
+  hosts: servera.lab.example.com
+  become: true
+  gather_facts: false
+
+  tasks:
+    - name: Ensure the machine is up
+      gls.utils.newping:
+        data: pong
+
+    - name: Ensure configuration files are saved
+      include_role:
+        name: gls.utils.backup
+      vars:
+        backup_id: backup_etc
+        backup_files:
+          - /etc/sysconfig
+          - /etc/yum.repos.d

T7/guided/role-collections/inventory

@@ -0,0 +1,16 @@
+[controlnode]
+workstation.lab.example.com
+
+
+[na_datacenter]
+servera.lab.example.com
+
+[europe_datacenter]
+serverb.lab.example.com
+
+
+[database_servers]
+servera.lab.example.com
+serverb.lab.example.com
+
+

T7/guided/role-collections/new_system.yml

@@ -0,0 +1,19 @@
+---
+- name: Configure the system
+  hosts: servera.lab.example.com
+  become: true
+  gather_facts: true
+
+  tasks:
+    - name: Ensure the system is registered with Insights
+      include_role:
+        name: redhat.insights.insights_client
+      vars:
+        auto_config: false
+        insights_proxy: http://proxy.example.com:8080
+
+    - name: Ensure SELinux mode is Enforcing
+      include_role:
+        name: redhat.rhel_system_roles.selinux
+      vars:
+        selinux_state: enforcing

T7/guided/role-collections/requirements.yml

@@ -0,0 +1,4 @@
+---
+collections:
+  - name: http://materials.example.com/labs/role-collections/redhat-insights-1.0.5.tar.gz
+  - name: http://materials.example.com/labs/role-collections/redhat-rhel_system_roles-1.0.1.tar.gz

T7/guided/role-collections/url.txt

@@ -0,0 +1 @@
+http://materials.example.com/labs/role-collections/gls-utils-0.0.1.tar.gz

T7/guided/role-review/ansible.cfg

@@ -0,0 +1,12 @@
+[defaults]
+inventory=./inventory
+remote_user=devops
+
+#Try me...
+#callback_whitelist=profile_tasks
+
+[privilege_escalation]
+become=True
+become_method=sudo
+become_user=root
+become_ask_pass=False

T7/guided/role-review/developer.conf.j2

@@ -0,0 +1,28 @@
+#This is an Ansible Template
+# 'item' is a user from the web_developers user list,
+#  and defines:
+#    - user_port
+#    - username
+#    - name
+
+Listen {{ item.user_port }}
+
+<VirtualHost *:{{ item.user_port }}>
+    ServerName {{ inventory_hostname }}
+
+    ErrorLog "logs/{{ item.username }}_error_log"
+    CustomLog "logs/{{ item.username }}_access_log" common
+
+    DocumentRoot /srv/{{ item.username }}/www
+
+
+    <Directory /srv/{{ item.username }}/www >
+        Options FollowSymLinks
+
+        AllowOverride All
+        Require all granted
+
+    </Directory>
+
+</VirtualHost>
+

T7/guided/role-review/developer_tasks.yml

@@ -0,0 +1,56 @@
+---
+# tasks file for apache.developer_configs
+
+- name: Create user accounts
+  user:
+    name: "{{ item.username }}"
+    state: present
+  loop: "{{ web_developers }}"
+
+#Allows 'student' user to login to
+# any of the user accounts - for the lab only.
+# Jinja syntax for 'key' keyword available from the documentation.
+- name: Give student access to all accounts
+  authorized_key:
+    user: "{{ item.username }}"
+    state: present
+    key: "{{ lookup('file', '/home/student/.ssh/lab_rsa.pub') }}"
+  loop: "{{ web_developers }}"
+
+- name: Create content directory
+  file:
+    path: /srv/{{ item.username }}/www
+    state: directory
+    owner: "{{ item.username }}"
+  loop: "{{ web_developers }}"
+
+- name: Create skeleton index.html if needed
+  copy:
+    content: "This is index.html for user: {{ item.name }} ({{ item.username }})\n"
+    dest: /srv/{{ item.username }}/www/index.html
+    force: no
+    owner: "{{ item.username }}"
+    group: root
+    mode: 0664
+  loop: "{{ web_developers }}"
+
+
+- name: Set firewall port
+  firewalld:
+    port: "{{ item.user_port }}/tcp"
+    permanent: yes
+    state: enabled
+  loop: "{{ web_developers }}"
+  notify: restart firewalld
+
+- name: Copy Per-Developer Config files
+  template:
+    src: developer.conf.j2
+    dest: "/etc/httpd/conf.d/developer_{{ item.username }}.conf"
+    owner: root
+    group: root
+    mode: 0644
+  loop: "{{ web_developers }}"
+  notify: restart apache
+
+

T7/guided/role-review/group_vars/dev_webserver/selinux.yml

@@ -0,0 +1,15 @@
+---
+# variables used by rhel-system-roles.selinux
+
+selinux_policy: targeted
+selinux_state: enforcing
+
+selinux_ports:
+  - ports:
+      - "9081"
+      - "9082"
+    proto: 'tcp'
+    setype: 'http_port_t'
+    state: 'present'
+
+

T7/guided/role-review/group_vars/dev_webserver/web_developers.yml

@@ -0,0 +1,10 @@
+---
+web_developers:
+  - username: jdoe
+    name: John Doe
+    user_port: 9081
+  - username: jdoe2
+    name: Jane Doe
+    user_port: 9082
+
+

T7/guided/role-review/inventory

@@ -0,0 +1,6 @@
+[controlnode]
+workstation.lab.example.com
+
+[dev_webserver]
+servera.lab.example.com
+

T7/guided/role-review/roles/apache.developer_configs/.travis.yml

@@ -0,0 +1,29 @@
+---
+language: python
+python: "2.7"
+
+# Use the new container infrastructure
+sudo: false
+
+# Install ansible
+addons:
+  apt:
+    packages:
+    - python-pip
+
+install:
+  # Install ansible
+  - pip install ansible
+
+  # Check ansible version
+  - ansible --version
+
+  # Create ansible.cfg with correct roles_path
+  - printf '[defaults]\nroles_path=../' >ansible.cfg
+
+script:
+  # Basic role syntax check
+  - ansible-playbook tests/test.yml -i tests/inventory --syntax-check
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

T7/guided/role-review/roles/apache.developer_configs/README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

T7/guided/role-review/roles/apache.developer_configs/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for apache.developer_configs

T7/guided/role-review/roles/apache.developer_configs/handlers/main.yml

@@ -0,0 +1,15 @@
+---
+# handlers file for apache
+
+- name: restart firewalld
+  service:
+    name: firewalld
+    state: restarted
+
+- name: restart apache
+  service:
+    name: httpd
+    state: restarted
+
+
+

T7/guided/role-review/roles/apache.developer_configs/meta/main.yml

@@ -0,0 +1,57 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.9
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+  dependencies: 
+    - name: infra.apache
+      src: git@workstation.lab.example.com:infra/apache
+      version: v1.4
+      scm: git
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.
+  

T7/guided/role-review/roles/apache.developer_configs/tasks/main.yml

@@ -0,0 +1,57 @@
+---
+# tasks file for apache.developer_configs
+
+- name: Create user accounts
+  user:
+    name: "{{ item.username }}"
+    state: present
+  loop: "{{ web_developers }}"
+
+#Allows 'student' user to login to
+# any of the user accounts - for the lab only.
+# Jinja syntax for 'key' keyword available from the documentation.
+- name: Give student access to all accounts
+  authorized_key:
+    user: "{{ item.username }}"
+    state: present
+    key: "{{ lookup('file', '/home/student/.ssh/lab_rsa.pub') }}"
+  loop: "{{ web_developers }}"
+
+- name: Create content directory
+  file:
+    path: /srv/{{ item.username }}/www
+    state: directory
+    owner: "{{ item.username }}"
+  loop: "{{ web_developers }}"
+
+- name: Create skeleton index.html if needed
+  copy:
+    content: "This is index.html for user: {{ item.name }} ({{ item.username }})\n"
+    dest: /srv/{{ item.username }}/www/index.html
+    force: no
+    owner: "{{ item.username }}"
+    group: root
+    mode: 0664
+  loop: "{{ web_developers }}"
+
+
+- name: Set firewall port
+  firewalld:
+    port: "{{ item.user_port }}/tcp"
+    permanent: yes
+    state: enabled
+  loop: "{{ web_developers }}"
+  notify: restart firewalld
+
+- name: Copy Per-Developer Config files
+  template:
+    src: developer.conf.j2
+    dest: "/etc/httpd/conf.d/developer_{{ item.username }}.conf"
+    force: yes
+    owner: root
+    group: root
+    mode: 0644
+  loop: "{{ web_developers }}"
+  notify: restart apache
+
+

T7/guided/role-review/roles/apache.developer_configs/templates/developer.conf.j2

@@ -0,0 +1,28 @@
+#This is an Ansible Template
+# 'item' is a user from the web_developers user list,
+#  and defines:
+#    - user_port
+#    - username
+#    - name
+
+Listen {{ item.user_port }}
+
+<VirtualHost *:{{ item.user_port }}>
+    ServerName {{ inventory_hostname }}
+
+    ErrorLog "logs/{{ item.username }}_error_log"
+    CustomLog "logs/{{ item.username }}_access_log" common
+
+    DocumentRoot /srv/{{ item.username }}/www
+
+
+    <Directory /srv/{{ item.username }}/www >
+        Options FollowSymLinks
+
+        AllowOverride All
+        Require all granted
+
+    </Directory>
+
+</VirtualHost>
+

T7/guided/role-review/roles/apache.developer_configs/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

T7/guided/role-review/roles/apache.developer_configs/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - apache.developer_configs

T7/guided/role-review/roles/apache.developer_configs/vars/main.yml

@@ -0,0 +1,2 @@
+---
+# vars file for apache.developer_configs

T7/guided/role-review/roles/infra.apache/README.md

@@ -0,0 +1,31 @@
+infra.apache
+=========
+
+The infrastructure team has developed this role to install and configure httpd on a server.
+
+Requirements
+------------
+
+None.
+
+Role Variables
+--------------
+
+Copy the main.yml file in the defaults directory to the appropriate group_vars directory.
+This file contains more information on the variables.
+
+Dependencies
+------------
+
+None
+
+Example Playbook
+----------------
+
+Below is an example of how to use the role
+
+    - hosts: web_servers
+      roles:
+         - role: infra.apache
+
+

T7/guided/role-review/roles/infra.apache/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for apache

T7/guided/role-review/roles/infra.apache/handlers/main.yml

@@ -0,0 +1,15 @@
+---
+# handlers file for apache
+
+- name: restart firewalld
+  service:
+    name: firewalld
+    state: restarted
+
+- name: restart apache
+  service:
+    name: httpd
+    state: restarted
+
+
+

T7/guided/role-review/roles/infra.apache/meta/.galaxy_install_info

@@ -0,0 +1 @@
+{install_date: 'Mon Feb 13 09:10:11 2023', version: v1.4}

T7/guided/role-review/roles/infra.apache/meta/main.yml

@@ -0,0 +1,30 @@
+galaxy_info:
+  author: Multiple Authors
+  description: A role to install and configure apache for Example, Inc.
+  company: Example, Inc.
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+
+  min_ansible_version: 2.4
+
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  platforms:
+  - name: EL
+    versions:
+    - 7
+
+  galaxy_tags:
+    - apache
+
+#No dependencies
+dependencies: []
+

T7/guided/role-review/roles/infra.apache/tasks/main.yml

@@ -0,0 +1,47 @@
+---
+# tasks file for apache
+
+- name: Apache Package is installed
+  yum:
+    name:
+      - httpd
+    state: present
+
+- name: Apache Service is started
+  service:
+    name: httpd
+    state: started
+    enabled: true
+
+- name: Custom Config files are present
+  template:
+    src: prod.conf.j2
+    dest: /etc/httpd/conf.d/prod.conf
+    owner: root 
+    group: root
+    mode: 0644
+  notify: restart apache
+
+- name: Firewalld allows HTTP traffic
+  firewalld:
+    service: http
+    permanent: true
+    state: enabled
+  notify: restart firewalld
+
+- name: Check for existence of index.html
+  stat:
+    path: "{{ prod_document_root }}/index.html"
+  register: index_stats
+
+- name: Install a skeleton index.html
+  copy:
+    content: "This is the production server on {{ inventory_hostname }}\n"
+    dest: "{{ prod_document_root }}/index.html"
+    owner: root
+    group: root
+    mode: 0644
+  when:
+    - index_stats.stat.exists is defined
+    - not index_stats.stat.exists
+

T7/guided/role-review/roles/infra.apache/templates/prod.conf.j2

@@ -0,0 +1,16 @@
+
+<VirtualHost *:80>
+    ServerName {{ inventory_hostname }}
+
+    DocumentRoot {{ prod_document_root }}
+
+    <Directory {{ prod_document_root }} >
+        Options FollowSymLinks
+
+        Order deny,allow
+        Allow from all
+
+    </Directory>
+
+</VirtualHost>
+

T7/guided/role-review/roles/infra.apache/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

T7/guided/role-review/roles/infra.apache/tests/roles/infra.apache

@@ -0,0 +1 @@
+../..

T7/guided/role-review/roles/infra.apache/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - infra.apache

T7/guided/role-review/roles/infra.apache/vars/main.yml

@@ -0,0 +1,6 @@
+---
+# vars file for apache
+
+
+prod_document_root: /var/www/html
+

T7/guided/role-review/roles/requirements.yml

@@ -0,0 +1,4 @@
+- name: infra.apache
+  src: git@workstation.lab.example.com:infra/apache
+  scm: git
+  version: v1.4

T7/guided/role-review/selinux.yml

@@ -0,0 +1,15 @@
+---
+# variables used by rhel-system-roles.selinux
+
+selinux_policy: targeted
+selinux_state: enforcing
+
+selinux_ports:
+  - ports:
+      - "9081"
+      - "9082"
+    proto: 'tcp'
+    setype: 'http_port_t'
+    state: 'present'
+
+

T7/guided/role-review/web_dev_server.yml

@@ -0,0 +1,22 @@
+- name: Configure Dev Web Server
+  hosts: dev_webserver
+  force_handlers: yes
+  roles:
+    - apache.developer_configs
+  pre_tasks:
+    - name: Check SELinux configuration
+      block:
+        - include_role:
+            name: rhel-system-roles.selinux
+      rescue:
+    # Fail if failed for a different reason than selinux_reboot_required.
+        - name: Check for general failure
+          fail:
+            msg: "SELinux role failed."
+          when: not selinux_reboot_required
+        - name: Restart managed host
+          reboot:
+            msg: "Ansible rebooting system for updates."
+        - name: Reapply SELinux role to complete changes
+          include_role:
+            name: rhel-system-roles.selinux

T7/guided/role-review/web_developers.yml

@@ -0,0 +1,10 @@
+---
+web_developers:
+  - username: jdoe
+    name: John Doe
+    user_port: 9081
+  - username: jdoe2
+    name: Jane Doe
+    user_port: 9082
+
+

T7/guided/role-review2/ansible.cfg

@@ -0,0 +1,12 @@
+[defaults]
+inventory=./inventory
+remote_user=devops
+
+#Try me...
+#callback_whitelist=profile_tasks
+
+[privilege_escalation]
+become=True
+become_method=sudo
+become_user=root
+become_ask_pass=False

T7/guided/role-review2/group_vars/dev_webserver/selinux.yml

@@ -0,0 +1,15 @@
+---
+# variables used by rhel-system-roles.selinux
+
+selinux_policy: targeted
+selinux_state: enforcing
+
+selinux_ports:
+  - ports:
+      - "9081"
+      - "9082"
+    proto: 'tcp'
+    setype: 'http_port_t'
+    state: 'present'
+
+

T7/guided/role-review2/group_vars/dev_webserver/web_developers.yml

@@ -0,0 +1,10 @@
+---
+web_developers:
+  - username: jdoe
+    name: John Doe
+    user_port: 9081
+  - username: jdoe2
+    name: Jane Doe
+    user_port: 9082
+
+

T7/guided/role-review2/inventory

@@ -0,0 +1,7 @@
+[controlnode]
+workstation.lab.example.com
+
+[dev_webserver]
+servera.lab.example.com
+
+

T7/guided/role-review2/roles/apache.developer_configs/.travis.yml

@@ -0,0 +1,29 @@
+---
+language: python
+python: "2.7"
+
+# Use the new container infrastructure
+sudo: false
+
+# Install ansible
+addons:
+  apt:
+    packages:
+    - python-pip
+
+install:
+  # Install ansible
+  - pip install ansible
+
+  # Check ansible version
+  - ansible --version
+
+  # Create ansible.cfg with correct roles_path
+  - printf '[defaults]\nroles_path=../' >ansible.cfg
+
+script:
+  # Basic role syntax check
+  - ansible-playbook tests/test.yml -i tests/inventory --syntax-check
+
+notifications:
+  webhooks: https://galaxy.ansible.com/api/v1/notifications/

T7/guided/role-review2/roles/apache.developer_configs/README.md

@@ -0,0 +1,38 @@
+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

T7/guided/role-review2/roles/apache.developer_configs/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for apache.developer_configs

T7/guided/role-review2/roles/apache.developer_configs/handlers/main.yml

@@ -0,0 +1,2 @@
+---
+# handlers file for apache.developer_configs

T7/guided/role-review2/roles/apache.developer_configs/meta/main.yml

@@ -0,0 +1,57 @@
+galaxy_info:
+  author: your name
+  description: your role description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.9
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+  dependencies: 
+    - name: infra.apache
+      src: git@workstation.lab.example.com:infra/apache
+      version: v1.4
+      scm: git
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.
+  

T7/guided/role-review2/roles/apache.developer_configs/tasks/main.yml

@@ -0,0 +1,57 @@
+---
+# tasks file for apache.developer_configs
+
+- name: Create user accounts
+  user:
+    name: "{{ item.username }}"
+    state: present
+  loop: "{{ web_developers }}"
+
+#Allows 'student' user to login to
+# any of the user accounts - for the lab only.
+# Jinja syntax for 'key' keyword available from the documentation.
+- name: Give student access to all accounts
+  authorized_key:
+    user: "{{ item.username }}"
+    state: present
+    key: "{{ lookup('file', '/home/student/.ssh/lab_rsa.pub') }}"
+  loop: "{{ web_developers }}"
+
+- name: Create content directory
+  file:
+    path: /srv/{{ item.username }}/www
+    state: directory
+    owner: "{{ item.username }}"
+  loop: "{{ web_developers }}"
+
+- name: Create skeleton index.html if needed
+  copy:
+    content: "This is index.html for user: {{ item.name }} ({{ item.username }})\n"
+    dest: /srv/{{ item.username }}/www/index.html
+    force: no
+    owner: "{{ item.username }}"
+    group: root
+    mode: 0664
+  loop: "{{ web_developers }}"
+
+
+- name: Set firewall port
+  firewalld:
+    port: "{{ item.user_port }}/tcp"
+    permanent: yes
+    state: enabled
+  loop: "{{ web_developers }}"
+  notify: restart firewalld
+
+- name: Copy Per-Developer Config files
+  template:
+    src: developer.conf.j2
+    dest: "/etc/httpd/conf.d/developer_{{ item.username }}.conf"
+    force: yes
+    owner: root
+    group: root
+    mode: 0644
+  loop: "{{ web_developers }}"
+  notify: restart apache
+
+

T7/guided/role-review2/roles/apache.developer_configs/templates/developer.conf.j2

@@ -0,0 +1,28 @@
+#This is an Ansible Template
+# 'item' is a user from the web_developers user list,
+#  and defines:
+#    - user_port
+#    - username
+#    - name
+
+Listen {{ item.user_port }}
+
+<VirtualHost *:{{ item.user_port }}>
+    ServerName {{ inventory_hostname }}
+
+    ErrorLog "logs/{{ item.username }}_error_log"
+    CustomLog "logs/{{ item.username }}_access_log" common
+
+    DocumentRoot /srv/{{ item.username }}/www
+
+
+    <Directory /srv/{{ item.username }}/www >
+        Options FollowSymLinks
+
+        AllowOverride All
+        Require all granted
+
+    </Directory>
+
+</VirtualHost>
+

T7/guided/role-review2/roles/apache.developer_configs/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

T7/guided/role-review2/roles/apache.developer_configs/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - apache.developer_configs

T7/guided/role-review2/roles/apache.developer_configs/vars/main.yml

@@ -0,0 +1,2 @@
+---
+# vars file for apache.developer_configs

T7/guided/role-review2/roles/infra.apache/README.md

@@ -0,0 +1,31 @@
+infra.apache
+=========
+
+The infrastructure team has developed this role to install and configure httpd on a server.
+
+Requirements
+------------
+
+None.
+
+Role Variables
+--------------
+
+Copy the main.yml file in the defaults directory to the appropriate group_vars directory.
+This file contains more information on the variables.
+
+Dependencies
+------------
+
+None
+
+Example Playbook
+----------------
+
+Below is an example of how to use the role
+
+    - hosts: web_servers
+      roles:
+         - role: infra.apache
+
+

T7/guided/role-review2/roles/infra.apache/defaults/main.yml

@@ -0,0 +1,2 @@
+---
+# defaults file for apache

T7/guided/role-review2/roles/infra.apache/handlers/main.yml

@@ -0,0 +1,15 @@
+---
+# handlers file for apache
+
+- name: restart firewalld
+  service:
+    name: firewalld
+    state: restarted
+
+- name: restart apache
+  service:
+    name: httpd
+    state: restarted
+
+
+

T7/guided/role-review2/roles/infra.apache/meta/.galaxy_install_info

@@ -0,0 +1 @@
+{install_date: 'Mon Feb 13 09:10:11 2023', version: v1.4}

T7/guided/role-review2/roles/infra.apache/meta/main.yml

@@ -0,0 +1,30 @@
+galaxy_info:
+  author: Multiple Authors
+  description: A role to install and configure apache for Example, Inc.
+  company: Example, Inc.
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+
+  min_ansible_version: 2.4
+
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  platforms:
+  - name: EL
+    versions:
+    - 7
+
+  galaxy_tags:
+    - apache
+
+#No dependencies
+dependencies: []
+

T7/guided/role-review2/roles/infra.apache/tasks/main.yml

@@ -0,0 +1,47 @@
+---
+# tasks file for apache
+
+- name: Apache Package is installed
+  yum:
+    name:
+      - httpd
+    state: present
+
+- name: Apache Service is started
+  service:
+    name: httpd
+    state: started
+    enabled: true
+
+- name: Custom Config files are present
+  template:
+    src: prod.conf.j2
+    dest: /etc/httpd/conf.d/prod.conf
+    owner: root 
+    group: root
+    mode: 0644
+  notify: restart apache
+
+- name: Firewalld allows HTTP traffic
+  firewalld:
+    service: http
+    permanent: true
+    state: enabled
+  notify: restart firewalld
+
+- name: Check for existence of index.html
+  stat:
+    path: "{{ prod_document_root }}/index.html"
+  register: index_stats
+
+- name: Install a skeleton index.html
+  copy:
+    content: "This is the production server on {{ inventory_hostname }}\n"
+    dest: "{{ prod_document_root }}/index.html"
+    owner: root
+    group: root
+    mode: 0644
+  when:
+    - index_stats.stat.exists is defined
+    - not index_stats.stat.exists
+

T7/guided/role-review2/roles/infra.apache/templates/prod.conf.j2

@@ -0,0 +1,16 @@
+
+<VirtualHost *:80>
+    ServerName {{ inventory_hostname }}
+
+    DocumentRoot {{ prod_document_root }}
+
+    <Directory {{ prod_document_root }} >
+        Options FollowSymLinks
+
+        Order deny,allow
+        Allow from all
+
+    </Directory>
+
+</VirtualHost>
+

T7/guided/role-review2/roles/infra.apache/tests/inventory

@@ -0,0 +1,2 @@
+localhost
+

T7/guided/role-review2/roles/infra.apache/tests/roles/infra.apache

@@ -0,0 +1 @@
+../..

T7/guided/role-review2/roles/infra.apache/tests/test.yml

@@ -0,0 +1,5 @@
+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - infra.apache

T7/guided/role-review2/roles/infra.apache/vars/main.yml

@@ -0,0 +1,6 @@
+---
+# vars file for apache
+
+
+prod_document_root: /var/www/html
+

T7/guided/role-review2/roles/requirements.yml

@@ -0,0 +1,4 @@
+- name: infra.apache
+  src: git@workstation.lab.example.com:infra/apache
+  scm: git
+  version: v1.4

T7/guided/role-review2/selinux.yml

@@ -0,0 +1,15 @@
+---
+# variables used by rhel-system-roles.selinux
+
+selinux_policy: targeted
+selinux_state: enforcing
+
+selinux_ports:
+  - ports:
+      - "9081"
+      - "9082"
+    proto: 'tcp'
+    setype: 'http_port_t'
+    state: 'present'
+
+

T7/guided/role-review2/web_dev_server.yml

@@ -0,0 +1,22 @@
+- name: Configure Dev Web Server
+  hosts: dev_webserver
+  force_handlers: yes
+  roles:
+    - apache.developer_configs
+  pre_tasks:
+    - name: Check SELinux configuration
+      block:
+        - include_role:
+            name: rhel-system-roles.selinux
+      rescue:
+    # Fail if failed for a different reason than selinux_reboot_required.
+        - name: Check for general failure
+          fail:
+            msg: "SELinux role failed."
+          when: not selinux_reboot_required
+        - name: Restart managed host
+          reboot:
+            msg: "Ansible rebooting system for updates."
+        - name: Reapply SELinux role to complete changes
+          include_role:
+            name: rhel-system-roles.selinux

T8/guided/troubleshoot-host/ansible.cfg

@@ -0,0 +1,6 @@
+[defaults]
+inventory = /home/student/troubleshoot-host/inventory
+remote_user = devops
+
+[privilege_escalation]
+become = true

T8/guided/troubleshoot-host/inventory

@@ -0,0 +1,6 @@
+[samba_servers]
+servera.lab.exammple.com
+
+[mailrelay]
+servera.lab.example.com
+

T8/guided/troubleshoot-host/mailrelay.yml

@@ -0,0 +1,62 @@
+---
+# start of mailrelay playbook
+- name: create mail relay servers
+  hosts: mailrelay
+  user: devops
+  become: true
+
+  tasks:
+    - name: install postfix package
+      yum:
+        name: postfix
+        state: installed
+
+    - name: install mail config files
+      template:
+        src: postfix-relay-main.conf.j2
+        dest: /etc/postfix/main.cf
+        owner: root
+        group: root
+        mode: 0644
+      notify: restart postfix
+
+    - name: check main.cf file
+      stat: path=/etc/postfix/main.cf
+      register: maincf
+
+    - name: verify main.cf file exists
+      debug: msg="The main.cf file exists"
+      when: maincf.stat.exists is defined
+
+    - name: start and enable mail services
+      service:
+        name: postfix
+        state: started
+        enabled: yes
+
+    - name: check for always_bcc
+      command: /usr/sbin/postconf always_bcc
+      register: bcc_state
+      ignore_errors: true
+
+    - name: email notification of always_bcc config
+      mail:
+        to: student@serverb.example.com
+        subject: 'always_bcc setting is not empty'
+        body: "always_bcc is {{bcc_state.stdout}}"
+      when: bcc_state.stdout != 'always_bcc ='
+
+    - name: POSTFIX FIREWALL CONFIG
+      firewalld:
+        state: enabled
+        permanent: true
+        immediate: true
+        service: smtp
+      
+  handlers:
+    - name: restart postfix
+      service:
+        name: postfix
+        state: restarted
+
+# end of mailrelay play

T8/guided/troubleshoot-host/postfix-relay-main.conf.j2

@@ -0,0 +1,740 @@
+# {{ ansible_managed }}
+#
+# Global Postfix configuration file. This file lists only a subset
+# of all parameters. For the syntax, and for a complete parameter
+# list, see the postconf(5) manual page (command: "man 5 postconf").
+#
+# For common configuration examples, see BASIC_CONFIGURATION_README
+# and STANDARD_CONFIGURATION_README. To find these documents, use
+# the command "postconf html_directory readme_directory", or go to
+# http://www.postfix.org/BASIC_CONFIGURATION_README.html etc.
+#
+# For best results, change no more than 2-3 parameters at a time,
+# and test if Postfix still works after every change.
+
+# COMPATIBILITY
+#
+# The compatibility_level determines what default settings Postfix
+# will use for main.cf and master.cf settings. These defaults will
+# change over time.
+#
+# To avoid breaking things, Postfix will use backwards-compatible
+# default settings and log where it uses those old backwards-compatible
+# default settings, until the system administrator has determined
+# if any backwards-compatible default settings need to be made
+# permanent in main.cf or master.cf.
+#
+# When this review is complete, update the compatibility_level setting
+# below as recommended in the RELEASE_NOTES file.
+#
+# The level below is what should be used with new (not upgrade) installs.
+#
+compatibility_level = 2
+
+# SOFT BOUNCE
+#
+# The soft_bounce parameter provides a limited safety net for
+# testing.  When soft_bounce is enabled, mail will remain queued that
+# would otherwise bounce. This parameter disables locally-generated
+# bounces, and prevents the SMTP server from rejecting mail permanently
+# (by changing 5xx replies into 4xx replies). However, soft_bounce
+# is no cure for address rewriting mistakes or mail routing mistakes.
+#
+#soft_bounce = no
+
+# LOCAL PATHNAME INFORMATION
+#
+# The queue_directory specifies the location of the Postfix queue.
+# This is also the root directory of Postfix daemons that run chrooted.
+# See the files in examples/chroot-setup for setting up Postfix chroot
+# environments on different UNIX systems.
+#
+queue_directory = /var/spool/postfix
+
+# The command_directory parameter specifies the location of all
+# postXXX commands.
+#
+command_directory = /usr/sbin
+
+# The daemon_directory parameter specifies the location of all Postfix
+# daemon programs (i.e. programs listed in the master.cf file). This
+# directory must be owned by root.
+#
+daemon_directory = /usr/libexec/postfix
+
+# The data_directory parameter specifies the location of Postfix-writable
+# data files (caches, random numbers). This directory must be owned
+# by the mail_owner account (see below).
+#
+data_directory = /var/lib/postfix
+
+# QUEUE AND PROCESS OWNERSHIP
+#
+# The mail_owner parameter specifies the owner of the Postfix queue
+# and of most Postfix daemon processes.  Specify the name of a user
+# account THAT DOES NOT SHARE ITS USER OR GROUP ID WITH OTHER ACCOUNTS
+# AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM.  In
+# particular, don't specify nobody or daemon. PLEASE USE A DEDICATED
+# USER.
+#
+mail_owner = postfix
+
+# The default_privs parameter specifies the default rights used by
+# the local delivery agent for delivery to external file or command.
+# These rights are used in the absence of a recipient user context.
+# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
+#
+#default_privs = nobody
+
+# INTERNET HOST AND DOMAIN NAMES
+# 
+# The myhostname parameter specifies the internet hostname of this
+# mail system. The default is to use the fully-qualified domain name
+# from gethostname(). $myhostname is used as a default value for many
+# other configuration parameters.
+#
+#myhostname = host.domain.tld
+#myhostname = virtual.domain.tld
+
+# The mydomain parameter specifies the local internet domain name.
+# The default is to use $myhostname minus the first component.
+# $mydomain is used as a default value for many other configuration
+# parameters.
+#
+#mydomain = domain.tld
+
+# SENDING MAIL
+# 
+# The myorigin parameter specifies the domain that locally-posted
+# mail appears to come from. The default is to append $myhostname,
+# which is fine for small sites.  If you run a domain with multiple
+# machines, you should (1) change this to $mydomain and (2) set up
+# a domain-wide alias database that aliases each user to
+# user@that.users.mailhost.
+#
+# For the sake of consistency between sender and recipient addresses,
+# myorigin also specifies the default domain name that is appended
+# to recipient addresses that have no @domain part.
+#
+#myorigin = $myhostname
+#myorigin = $mydomain
+
+# RECEIVING MAIL
+
+# The inet_interfaces parameter specifies the network interface
+# addresses that this mail system receives mail on.  By default,
+# the software claims all active interfaces on the machine. The
+# parameter also controls delivery of mail to user@[ip.address].
+#
+# See also the proxy_interfaces parameter, for network addresses that
+# are forwarded to us via a proxy or network address translator.
+#
+# Note: you need to stop/start Postfix when this parameter changes.
+#
+#inet_interfaces = all
+#inet_interfaces = $myhostname
+#inet_interfaces = $myhostname, localhost
+inet_interfaces = all
+
+# Enable IPv4, and IPv6 if supported
+inet_protocols = all
+
+# The proxy_interfaces parameter specifies the network interface
+# addresses that this mail system receives mail on by way of a
+# proxy or network address translation unit. This setting extends
+# the address list specified with the inet_interfaces parameter.
+#
+# You must specify your proxy/NAT addresses when your system is a
+# backup MX host for other domains, otherwise mail delivery loops
+# will happen when the primary MX host is down.
+#
+#proxy_interfaces =
+#proxy_interfaces = 1.2.3.4
+
+# The mydestination parameter specifies the list of domains that this
+# machine considers itself the final destination for.
+#
+# These domains are routed to the delivery agent specified with the
+# local_transport parameter setting. By default, that is the UNIX
+# compatible delivery agent that lookups all recipients in /etc/passwd
+# and /etc/aliases or their equivalent.
+#
+# The default is $myhostname + localhost.$mydomain + localhost.  On
+# a mail domain gateway, you should also include $mydomain.
+#
+# Do not specify the names of virtual domains - those domains are
+# specified elsewhere (see VIRTUAL_README).
+#
+# Do not specify the names of domains that this machine is backup MX
+# host for. Specify those names via the relay_domains settings for
+# the SMTP server, or use permit_mx_backup if you are lazy (see
+# STANDARD_CONFIGURATION_README).
+#
+# The local machine is always the final destination for mail addressed
+# to user@[the.net.work.address] of an interface that the mail system
+# receives mail on (see the inet_interfaces parameter).
+#
+# Specify a list of host or domain names, /file/name or type:table
+# patterns, separated by commas and/or whitespace. A /file/name
+# pattern is replaced by its contents; a type:table is matched when
+# a name matches a lookup key (the right-hand side is ignored).
+# Continue long lines by starting the next line with whitespace.
+#
+# See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".
+#
+mydestination = $myhostname, localhost.$mydomain, localhost
+#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
+#mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain,
+#	mail.$mydomain, www.$mydomain, ftp.$mydomain
+
+# REJECTING MAIL FOR UNKNOWN LOCAL USERS
+#
+# The local_recipient_maps parameter specifies optional lookup tables
+# with all names or addresses of users that are local with respect
+# to $mydestination, $inet_interfaces or $proxy_interfaces.
+#
+# If this parameter is defined, then the SMTP server will reject
+# mail for unknown local users. This parameter is defined by default.
+#
+# To turn off local recipient checking in the SMTP server, specify
+# local_recipient_maps = (i.e. empty).
+#
+# The default setting assumes that you use the default Postfix local
+# delivery agent for local delivery. You need to update the
+# local_recipient_maps setting if:
+#
+# - You define $mydestination domain recipients in files other than
+#   /etc/passwd, /etc/aliases, or the $virtual_alias_maps files.
+#   For example, you define $mydestination domain recipients in    
+#   the $virtual_mailbox_maps files.
+#
+# - You redefine the local delivery agent in master.cf.
+#
+# - You redefine the "local_transport" setting in main.cf.
+#
+# - You use the "luser_relay", "mailbox_transport", or "fallback_transport"
+#   feature of the Postfix local delivery agent (see local(8)).
+#
+# Details are described in the LOCAL_RECIPIENT_README file.
+#
+# Beware: if the Postfix SMTP server runs chrooted, you probably have
+# to access the passwd file via the proxymap service, in order to
+# overcome chroot restrictions. The alternative, having a copy of
+# the system passwd file in the chroot jail is just not practical.
+#
+# The right-hand side of the lookup tables is conveniently ignored.
+# In the left-hand side, specify a bare username, an @domain.tld
+# wild-card, or specify a user@domain.tld address.
+# 
+#local_recipient_maps = unix:passwd.byname $alias_maps
+#local_recipient_maps = proxy:unix:passwd.byname $alias_maps
+#local_recipient_maps =
+
+# The unknown_local_recipient_reject_code specifies the SMTP server
+# response code when a recipient domain matches $mydestination or
+# ${proxy,inet}_interfaces, while $local_recipient_maps is non-empty
+# and the recipient address or address local-part is not found.
+#
+# The default setting is 550 (reject mail) but it is safer to start
+# with 450 (try again later) until you are certain that your
+# local_recipient_maps settings are OK.
+#
+unknown_local_recipient_reject_code = 550
+
+# TRUST AND RELAY CONTROL
+
+# The mynetworks parameter specifies the list of "trusted" SMTP
+# clients that have more privileges than "strangers".
+#
+# In particular, "trusted" SMTP clients are allowed to relay mail
+# through Postfix.  See the smtpd_recipient_restrictions parameter
+# in postconf(5).
+#
+# You can specify the list of "trusted" network addresses by hand
+# or you can let Postfix do it for you (which is the default).
+#
+# By default (mynetworks_style = subnet), Postfix "trusts" SMTP
+# clients in the same IP subnetworks as the local machine.
+# On Linux, this does works correctly only with interfaces specified
+# with the "ifconfig" command.
+# 
+# Specify "mynetworks_style = class" when Postfix should "trust" SMTP
+# clients in the same IP class A/B/C networks as the local machine.
+# Don't do this with a dialup site - it would cause Postfix to "trust"
+# your entire provider's network.  Instead, specify an explicit
+# mynetworks list by hand, as described below.
+#  
+# Specify "mynetworks_style = host" when Postfix should "trust"
+# only the local machine.
+# 
+#mynetworks_style = class
+#mynetworks_style = subnet
+#mynetworks_style = host
+
+# Alternatively, you can specify the mynetworks list by hand, in
+# which case Postfix ignores the mynetworks_style setting.
+#
+# Specify an explicit list of network/netmask patterns, where the
+# mask specifies the number of bits in the network part of a host
+# address.
+#
+# You can also specify the absolute pathname of a pattern file instead
+# of listing the patterns here. Specify type:table for table-based lookups
+# (the value on the table right-hand side is not used).
+#
+#mynetworks = 168.100.189.0/28, 127.0.0.0/8
+#mynetworks = $config_directory/mynetworks
+#mynetworks = hash:/etc/postfix/network_table
+
+# The relay_domains parameter restricts what destinations this system will
+# relay mail to.  See the smtpd_recipient_restrictions description in
+# postconf(5) for detailed information.
+#
+# By default, Postfix relays mail
+# - from "trusted" clients (IP address matches $mynetworks) to any destination,
+# - from "untrusted" clients to destinations that match $relay_domains or
+#   subdomains thereof, except addresses with sender-specified routing.
+# The default relay_domains value is $mydestination.
+# 
+# In addition to the above, the Postfix SMTP server by default accepts mail
+# that Postfix is final destination for:
+# - destinations that match $inet_interfaces or $proxy_interfaces,
+# - destinations that match $mydestination
+# - destinations that match $virtual_alias_domains,
+# - destinations that match $virtual_mailbox_domains.
+# These destinations do not need to be listed in $relay_domains.
+# 
+# Specify a list of hosts or domains, /file/name patterns or type:name
+# lookup tables, separated by commas and/or whitespace.  Continue
+# long lines by starting the next line with whitespace. A file name
+# is replaced by its contents; a type:name table is matched when a
+# (parent) domain appears as lookup key.
+#
+# NOTE: Postfix will not automatically forward mail for domains that
+# list this system as their primary or backup MX host. See the
+# permit_mx_backup restriction description in postconf(5).
+#
+#relay_domains = $mydestination
+
+# INTERNET OR INTRANET
+
+# The relayhost parameter specifies the default host to send mail to
+# when no entry is matched in the optional transport(5) table. When
+# no relayhost is given, mail is routed directly to the destination.
+#
+# On an intranet, specify the organizational domain name. If your
+# internal DNS uses no MX records, specify the name of the intranet
+# gateway host instead.
+#
+# In the case of SMTP, specify a domain, host, host:port, [host]:port,
+# [address] or [address]:port; the form [host] turns off MX lookups.
+#
+# If you're connected via UUCP, see also the default_transport parameter.
+#
+#relayhost = $mydomain
+#relayhost = [gateway.my.domain]
+#relayhost = [mailserver.isp.tld]
+#relayhost = uucphost
+#relayhost = [an.ip.add.ress]
+
+# REJECTING UNKNOWN RELAY USERS
+#
+# The relay_recipient_maps parameter specifies optional lookup tables
+# with all addresses in the domains that match $relay_domains.
+#
+# If this parameter is defined, then the SMTP server will reject
+# mail for unknown relay users. This feature is off by default.
+#
+# The right-hand side of the lookup tables is conveniently ignored.
+# In the left-hand side, specify an @domain.tld wild-card, or specify
+# a user@domain.tld address.
+# 
+#relay_recipient_maps = hash:/etc/postfix/relay_recipients
+
+# INPUT RATE CONTROL
+#
+# The in_flow_delay configuration parameter implements mail input
+# flow control. This feature is turned on by default, although it
+# still needs further development (it's disabled on SCO UNIX due
+# to an SCO bug).
+# 
+# A Postfix process will pause for $in_flow_delay seconds before
+# accepting a new message, when the message arrival rate exceeds the
+# message delivery rate. With the default 100 SMTP server process
+# limit, this limits the mail inflow to 100 messages a second more
+# than the number of messages delivered per second.
+# 
+# Specify 0 to disable the feature. Valid delays are 0..10.
+# 
+#in_flow_delay = 1s
+
+# ADDRESS REWRITING
+#
+# The ADDRESS_REWRITING_README document gives information about
+# address masquerading or other forms of address rewriting including
+# username->Firstname.Lastname mapping.
+
+# ADDRESS REDIRECTION (VIRTUAL DOMAIN)
+#
+# The VIRTUAL_README document gives information about the many forms
+# of domain hosting that Postfix supports.
+
+# "USER HAS MOVED" BOUNCE MESSAGES
+#
+# See the discussion in the ADDRESS_REWRITING_README document.
+
+# TRANSPORT MAP
+#
+# See the discussion in the ADDRESS_REWRITING_README document.
+
+# ALIAS DATABASE
+#
+# The alias_maps parameter specifies the list of alias databases used
+# by the local delivery agent. The default list is system dependent.
+#
+# On systems with NIS, the default is to search the local alias
+# database, then the NIS alias database. See aliases(5) for syntax
+# details.
+# 
+# If you change the alias database, run "postalias /etc/aliases" (or
+# wherever your system stores the mail alias file), or simply run
+# "newaliases" to build the necessary DBM or DB file.
+#
+# It will take a minute or so before changes become visible.  Use
+# "postfix reload" to eliminate the delay.
+#
+#alias_maps = dbm:/etc/aliases
+alias_maps = hash:/etc/aliases
+#alias_maps = hash:/etc/aliases, nis:mail.aliases
+#alias_maps = netinfo:/aliases
+
+# The alias_database parameter specifies the alias database(s) that
+# are built with "newaliases" or "sendmail -bi".  This is a separate
+# configuration parameter, because alias_maps (see above) may specify
+# tables that are not necessarily all under control by Postfix.
+#
+#alias_database = dbm:/etc/aliases
+#alias_database = dbm:/etc/mail/aliases
+alias_database = hash:/etc/aliases
+#alias_database = hash:/etc/aliases, hash:/opt/majordomo/aliases
+
+# ADDRESS EXTENSIONS (e.g., user+foo)
+#
+# The recipient_delimiter parameter specifies the separator between
+# user names and address extensions (user+foo). See canonical(5),
+# local(8), relocated(5) and virtual(5) for the effects this has on
+# aliases, canonical, virtual, relocated and .forward file lookups.
+# Basically, the software tries user+foo and .forward+foo before
+# trying user and .forward.
+#
+#recipient_delimiter = +
+
+# DELIVERY TO MAILBOX
+#
+# The home_mailbox parameter specifies the optional pathname of a
+# mailbox file relative to a user's home directory. The default
+# mailbox file is /var/spool/mail/user or /var/mail/user.  Specify
+# "Maildir/" for qmail-style delivery (the / is required).
+#
+#home_mailbox = Mailbox
+#home_mailbox = Maildir/
+ 
+# The mail_spool_directory parameter specifies the directory where
+# UNIX-style mailboxes are kept. The default setting depends on the
+# system type.
+#
+#mail_spool_directory = /var/mail
+#mail_spool_directory = /var/spool/mail
+
+# The mailbox_command parameter specifies the optional external
+# command to use instead of mailbox delivery. The command is run as
+# the recipient with proper HOME, SHELL and LOGNAME environment settings.
+# Exception:  delivery for root is done as $default_user.
+#
+# Other environment variables of interest: USER (recipient username),
+# EXTENSION (address extension), DOMAIN (domain part of address),
+# and LOCAL (the address localpart).
+#
+# Unlike other Postfix configuration parameters, the mailbox_command
+# parameter is not subjected to $parameter substitutions. This is to
+# make it easier to specify shell syntax (see example below).
+#
+# Avoid shell meta characters because they will force Postfix to run
+# an expensive shell process. Procmail alone is expensive enough.
+#
+# IF YOU USE THIS TO DELIVER MAIL SYSTEM-WIDE, YOU MUST SET UP AN
+# ALIAS THAT FORWARDS MAIL FOR ROOT TO A REAL USER.
+#
+#mailbox_command = /some/where/procmail
+#mailbox_command = /some/where/procmail -a "$EXTENSION"
+
+# The mailbox_transport specifies the optional transport in master.cf
+# to use after processing aliases and .forward files. This parameter
+# has precedence over the mailbox_command, fallback_transport and
+# luser_relay parameters.
+#
+# Specify a string of the form transport:nexthop, where transport is
+# the name of a mail delivery transport defined in master.cf.  The
+# :nexthop part is optional. For more details see the sample transport
+# configuration file.
+#
+# NOTE: if you use this feature for accounts not in the UNIX password
+# file, then you must update the "local_recipient_maps" setting in
+# the main.cf file, otherwise the SMTP server will reject mail for    
+# non-UNIX accounts with "User unknown in local recipient table".
+#
+# Cyrus IMAP over LMTP. Specify ``lmtpunix      cmd="lmtpd"
+# listen="/var/imap/socket/lmtp" prefork=0'' in cyrus.conf.
+#mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
+
+# If using the cyrus-imapd IMAP server deliver local mail to the IMAP
+# server using LMTP (Local Mail Transport Protocol), this is prefered
+# over the older cyrus deliver program by setting the
+# mailbox_transport as below:
+#
+# mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
+#
+# The efficiency of LMTP delivery for cyrus-imapd can be enhanced via
+# these settings.
+#
+# local_destination_recipient_limit = 300
+# local_destination_concurrency_limit = 5
+#
+# Of course you should adjust these settings as appropriate for the
+# capacity of the hardware you are using. The recipient limit setting
+# can be used to take advantage of the single instance message store
+# capability of Cyrus. The concurrency limit can be used to control
+# how many simultaneous LMTP sessions will be permitted to the Cyrus
+# message store.
+#
+# Cyrus IMAP via command line. Uncomment the "cyrus...pipe" and
+# subsequent line in master.cf.
+#mailbox_transport = cyrus
+
+# The fallback_transport specifies the optional transport in master.cf
+# to use for recipients that are not found in the UNIX passwd database.
+# This parameter has precedence over the luser_relay parameter.
+#
+# Specify a string of the form transport:nexthop, where transport is
+# the name of a mail delivery transport defined in master.cf.  The
+# :nexthop part is optional. For more details see the sample transport
+# configuration file.
+#
+# NOTE: if you use this feature for accounts not in the UNIX password
+# file, then you must update the "local_recipient_maps" setting in
+# the main.cf file, otherwise the SMTP server will reject mail for    
+# non-UNIX accounts with "User unknown in local recipient table".
+#
+#fallback_transport = lmtp:unix:/var/lib/imap/socket/lmtp
+#fallback_transport =
+
+# The luser_relay parameter specifies an optional destination address
+# for unknown recipients.  By default, mail for unknown@$mydestination,
+# unknown@[$inet_interfaces] or unknown@[$proxy_interfaces] is returned
+# as undeliverable.
+#
+# The following expansions are done on luser_relay: $user (recipient
+# username), $shell (recipient shell), $home (recipient home directory),
+# $recipient (full recipient address), $extension (recipient address
+# extension), $domain (recipient domain), $local (entire recipient
+# localpart), $recipient_delimiter. Specify ${name?value} or
+# ${name:value} to expand value only when $name does (does not) exist.
+#
+# luser_relay works only for the default Postfix local delivery agent.
+#
+# NOTE: if you use this feature for accounts not in the UNIX password
+# file, then you must specify "local_recipient_maps =" (i.e. empty) in
+# the main.cf file, otherwise the SMTP server will reject mail for    
+# non-UNIX accounts with "User unknown in local recipient table".
+#
+#luser_relay = $user@other.host
+#luser_relay = $local@other.host
+#luser_relay = admin+$local
+  
+# JUNK MAIL CONTROLS
+# 
+# The controls listed here are only a very small subset. The file
+# SMTPD_ACCESS_README provides an overview.
+
+# The header_checks parameter specifies an optional table with patterns
+# that each logical message header is matched against, including
+# headers that span multiple physical lines.
+#
+# By default, these patterns also apply to MIME headers and to the
+# headers of attached messages. With older Postfix versions, MIME and
+# attached message headers were treated as body text.
+#
+# For details, see "man header_checks".
+#
+#header_checks = regexp:/etc/postfix/header_checks
+
+# FAST ETRN SERVICE
+#
+# Postfix maintains per-destination logfiles with information about
+# deferred mail, so that mail can be flushed quickly with the SMTP
+# "ETRN domain.tld" command, or by executing "sendmail -qRdomain.tld".
+# See the ETRN_README document for a detailed description.
+# 
+# The fast_flush_domains parameter controls what destinations are
+# eligible for this service. By default, they are all domains that
+# this server is willing to relay mail to.
+# 
+#fast_flush_domains = $relay_domains
+
+# SHOW SOFTWARE VERSION OR NOT
+#
+# The smtpd_banner parameter specifies the text that follows the 220
+# code in the SMTP server's greeting banner. Some people like to see
+# the mail version advertised. By default, Postfix shows no version.
+#
+# You MUST specify $myhostname at the start of the text. That is an
+# RFC requirement. Postfix itself does not care.
+#
+#smtpd_banner = $myhostname ESMTP $mail_name
+#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
+
+# PARALLEL DELIVERY TO THE SAME DESTINATION
+#
+# How many parallel deliveries to the same user or domain? With local
+# delivery, it does not make sense to do massively parallel delivery
+# to the same user, because mailbox updates must happen sequentially,
+# and expensive pipelines in .forward files can cause disasters when
+# too many are run at the same time. With SMTP deliveries, 10
+# simultaneous connections to the same domain could be sufficient to
+# raise eyebrows.
+# 
+# Each message delivery transport has its XXX_destination_concurrency_limit
+# parameter.  The default is $default_destination_concurrency_limit for
+# most delivery transports. For the local delivery agent the default is 2.
+
+#local_destination_concurrency_limit = 2
+#default_destination_concurrency_limit = 20
+
+# DEBUGGING CONTROL
+#
+# The debug_peer_level parameter specifies the increment in verbose
+# logging level when an SMTP client or server host name or address
+# matches a pattern in the debug_peer_list parameter.
+#
+debug_peer_level = 2
+
+# The debug_peer_list parameter specifies an optional list of domain
+# or network patterns, /file/name patterns or type:name tables. When
+# an SMTP client or server host name or address matches a pattern,
+# increase the verbose logging level by the amount specified in the
+# debug_peer_level parameter.
+#
+#debug_peer_list = 127.0.0.1
+#debug_peer_list = some.domain
+
+# The debugger_command specifies the external command that is executed
+# when a Postfix daemon program is run with the -D option.
+#
+# Use "command .. & sleep 5" so that the debugger can attach before
+# the process marches on. If you use an X-based debugger, be sure to
+# set up your XAUTHORITY environment variable before starting Postfix.
+#
+debugger_command =
+	 PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
+	 ddd $daemon_directory/$process_name $process_id & sleep 5
+
+# If you can't use X, use this to capture the call stack when a
+# daemon crashes. The result is in a file in the configuration
+# directory, and is named after the process name and the process ID.
+#
+# debugger_command =
+#	PATH=/bin:/usr/bin:/usr/local/bin; export PATH; (echo cont;
+#	echo where) | gdb $daemon_directory/$process_name $process_id 2>&1
+#	>$config_directory/$process_name.$process_id.log & sleep 5
+#
+# Another possibility is to run gdb under a detached screen session.
+# To attach to the screen session, su root and run "screen -r
+# <id_string>" where <id_string> uniquely matches one of the detached
+# sessions (from "screen -list").
+#
+# debugger_command =
+#	PATH=/bin:/usr/bin:/sbin:/usr/sbin; export PATH; screen
+#	-dmS $process_name gdb $daemon_directory/$process_name
+#	$process_id & sleep 1
+
+# INSTALL-TIME CONFIGURATION INFORMATION
+#
+# The following parameters are used when installing a new Postfix version.
+# 
+# sendmail_path: The full pathname of the Postfix sendmail command.
+# This is the Sendmail-compatible mail posting interface.
+# 
+sendmail_path = /usr/sbin/sendmail.postfix
+
+# newaliases_path: The full pathname of the Postfix newaliases command.
+# This is the Sendmail-compatible command to build alias databases.
+#
+newaliases_path = /usr/bin/newaliases.postfix
+
+# mailq_path: The full pathname of the Postfix mailq command.  This
+# is the Sendmail-compatible mail queue listing command.
+# 
+mailq_path = /usr/bin/mailq.postfix
+
+# setgid_group: The group for mail submission and queue management
+# commands.  This must be a group name with a numerical group ID that
+# is not shared with other accounts, not even with the Postfix account.
+#
+setgid_group = postdrop
+
+# html_directory: The location of the Postfix HTML documentation.
+#
+html_directory = no
+
+# manpage_directory: The location of the Postfix on-line manual pages.
+#
+manpage_directory = /usr/share/man
+
+# sample_directory: The location of the Postfix sample configuration files.
+# This parameter is obsolete as of Postfix 2.1.
+#
+sample_directory = /usr/share/doc/postfix/samples
+
+# readme_directory: The location of the Postfix README files.
+#
+readme_directory = /usr/share/doc/postfix/README_FILES
+
+# TLS CONFIGURATION
+#
+# Basic Postfix TLS configuration by default with self-signed certificate
+# for inbound SMTP and also opportunistic TLS for outbound SMTP.
+
+# The full pathname of a file with the Postfix SMTP server RSA certificate
+# in PEM format. Intermediate certificates should be included in general,
+# the server certificate first, then the issuing CA(s) (bottom-up order).
+#
+smtpd_tls_cert_file = /etc/pki/tls/certs/postfix.pem
+
+# The full pathname of a file with the Postfix SMTP server RSA private key
+# in PEM format. The private key must be accessible without a pass-phrase,
+# i.e. it must not be encrypted.
+#
+smtpd_tls_key_file = /etc/pki/tls/private/postfix.key
+
+# Announce STARTTLS support to remote SMTP clients, but do not require that
+# clients use TLS encryption (opportunistic TLS inbound).
+#
+smtpd_tls_security_level = may
+
+# Directory with PEM format Certification Authority certificates that the
+# Postfix SMTP client uses to verify a remote SMTP server certificate.
+#
+smtp_tls_CApath = /etc/pki/tls/certs
+
+# The full pathname of a file containing CA certificates of root CAs
+# trusted to sign either remote SMTP server certificates or intermediate CA
+# certificates.
+#
+smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt
+
+# Use TLS if this is supported by the remote SMTP server, otherwise use
+# plaintext (opportunistic TLS outbound).
+#
+smtp_tls_security_level = may
+meta_directory = /etc/postfix
+shlib_directory = /usr/lib64/postfix

T8/guided/troubleshoot-playbook/ansible.cfg

@@ -0,0 +1,4 @@
+[defaults]
+log_path = /home/student/troubleshoot-playbook/ansible.log
+inventory = /home/student/troubleshoot-playbook/inventory
+

T8/guided/troubleshoot-playbook/inventory

@@ -0,0 +1,6 @@
+[samba_servers]
+servera.lab.example.com
+
+[mailrelay]
+servera.lab.example.com
+

T8/guided/troubleshoot-playbook/samba.conf.j2

@@ -0,0 +1,22 @@
+# {{ random_var }}
+    [global]
+      workgroup = KAMANSI
+      server string = Samba Server Version %v
+      log file = /var/log/samba/log.%m
+      max log size = 50
+      security = user
+      passdb backend = tdbsam
+      load printers = yes
+      cups options = raw
+    [homes]
+      comment = Home Directories
+      browseable = no
+      writable = yes
+    [printers]
+      comment = All Printers
+      path = /var/spool/samba
+      browseable = no
+      guest ok = no
+      writable = no
+      printable = yes
+

T8/guided/troubleshoot-playbook/samba.yml

@@ -0,0 +1,50 @@
+---
+- name: Install a samba server
+  hosts: samba_servers
+  user: devops
+  become: true
+  vars:
+    install_state: installed
+    random_var: This is colon test
+
+  tasks:
+  - name: install samba
+    yum:
+      name: samba
+      state: "{{ install_state }}"
+
+  - name: install firewalld
+    yum:
+      name: firewalld
+      state: installed
+
+  - name: debug install_state variable
+    debug:
+      msg: "The state for the samba service is {{ install_state }}"
+
+  - name: start samba
+    service:
+      name: smb
+      state: started
+      enabled: yes
+
+  - name: start firewalld
+    service:
+      name: firewalld
+      state: started
+      enabled: yes
+
+  - name: configure firewall for samba
+    firewalld:
+      state: enabled
+      permanent: true
+      immediate: true
+      service: samba
+
+  - name: deliver samba config
+    template:
+      src: samba.conf.j2
+      dest: /etc/samba/smb.conf
+      owner: root
+      group: root
+      mode: 0644

T8/guided/troubleshoot-review/ansible.cfg

@@ -0,0 +1,2 @@
+[defaults]
+inventory = /home/student/troubleshoot-review/inventory

T8/guided/troubleshoot-review/html/index.html

@@ -0,0 +1 @@
+This is a test page.

T8/guided/troubleshoot-review/inventory

@@ -0,0 +1,2 @@
+[webservers]
+serverb.lab.example.com ansible_host=serverc.lab.example.com

T8/guided/troubleshoot-review/secure-web.yml

@@ -0,0 +1,87 @@
+---
+# start of secure web server playbook
+- name: create secure web service
+  hosts: webservers
+  remote_user: devops
+  become: true
+  vars:
+    random_var: This is colon test
+
+  tasks:
+    - block:
+        - name: install web server packages
+          yum:
+            name: "{{ item }}"
+            state: latest
+          notify:
+            - restart services
+          loop:
+            - httpd
+            - mod_ssl
+
+        - name: install httpd config files
+          copy:
+            src: vhosts.conf
+            dest: /etc/httpd/conf.d/vhosts.conf
+            backup: yes
+            owner: root
+            group: root
+            mode: 0644
+          register: vhosts_config
+          notify:
+            - restart services
+
+        - name: create ssl certificate
+          command: openssl req -new -nodes -x509 -subj "/C=US/ST=North Carolina/L=Raleigh/O=Example Inc/CN=serverb.lab.example.com" -days 120 -keyout /etc/pki/tls/private/serverb.lab.example.com.key -out /etc/pki/tls/certs/serverb.lab.example.com.crt -extensions v3_ca
+          args:
+            creates: /etc/pki/tls/certs/serverb.lab.example.com.crt
+
+        - name: start and enable web services
+          service:
+            name: httpd
+            state: started
+            enabled: yes
+
+        - name: deliver content
+          copy:
+            dest: /var/www/vhosts/serverb-secure
+            src: html/
+
+        - name: check httpd syntax
+          command: /sbin/httpd -t
+          register: httpd_conf_syntax
+          failed_when: "'Syntax OK' not in httpd_conf_syntax.stderr"
+
+        - name: httpd_conf_syntax variable
+          debug:
+            msg: "The httpd_conf_syntax variable value is {{ httpd_conf_syntax }}"
+
+        - name: check httpd status
+          command: systemctl is-active httpd
+          register: httpd_status
+          changed_when: httpd_status.rc != 0
+          notify:
+            - restart services
+
+      rescue:
+        - name: recover original httpd config
+          file:
+            path: /etc/httpd/conf.d/vhosts.conf
+            state: absent
+          notify:
+            - restart services
+
+        - name: email notification of httpd config status
+          mail:
+            to: student@serverb.lab.example.com
+            subject: 'httpd config is not correct'
+            body: "httpd syntax is {{httpd_conf_syntax.stdout}}"
+          when: httpd_conf_syntax.stdout != 'Syntax OK'
+
+  handlers:
+    - name: restart services
+      service:
+        name: httpd
+        state: restarted
+
+# end of secure web play

T8/guided/troubleshoot-review/vhosts.conf

@@ -0,0 +1,18 @@
+<VirtualHost serverb.lab.example.com>
+    ServerAdmin webmaster@foob.example.com
+    ServerName serverb.lab.example.com
+    ErrorLog logs/serverb-ssl.error.log
+    CustomLog logs/serverb-secure.common.log common
+    DocumentRoot /var/www/vhosts/serverb-secure/
+
+    SSLEngine On
+    SSLCertificateFile /etc/pki/tls/certs/serverb.lab.example.com.crt
+    SSLCertificateKeyFile /etc/pki/tls/private/serverb.lab.example.com.key
+
+    <Directory /var/www/vhosts/serverb-secure>
+        Options +Indexes +followsymlinks +includes
+        Order allow,deny
+        allow from all
+    </Directory>
+</VirtualHost>
+

T9/guided/system-process/ansible.cfg

@@ -0,0 +1,9 @@
+[defaults]
+remote_user = devops
+inventory = ./inventory
+
+
+[privilege_escalation]
+become = yes
+become_method = sudo
+

T9/guided/system-process/create_crontab_file.yml

@@ -0,0 +1,14 @@
+- name: recurring cron job
+  hosts: webservers
+  become: true
+  tasks:
+    - name: crontab file exists
+      cron:
+        name: Add date and time to a file
+        minute: "*/2"
+        hour: 9-16
+        weekday: 1-5
+        user: devops
+        job: 'date >> /home/devops/my_date_time_cron_job'
+        cron_file: add-date-time
+        state: present

T9/guided/system-process/inventory

@@ -0,0 +1,3 @@
+[webservers]
+servera.lab.example.com
+

T9/guided/system-process/reboot_hosts.yml

@@ -0,0 +1,6 @@
+- name: reboots servers
+  hosts: webservers
+  become: true
+  tasks:
+    - name: reboot systems
+      reboot:

T9/guided/system-process/remove_cron_jobs.yml

@@ -0,0 +1,10 @@
+- name: cron job removed
+  hosts: webservers
+  become: true
+  tasks:
+    - name: remove cron job
+      cron:
+        name: Add date and time to a file
+        user: devops
+        cron_file:  add-date-time
+        state: absent

T9/guided/system-process/schedule_at_task.yml

@@ -0,0 +1,12 @@
+- name: schedule at task
+  hosts: webservers
+  become: true
+  become_user: devops
+  tasks:
+    - name: at task
+      at:
+        command: "date > ~/my_at_time\n"
+        count: 1
+        units: minutes
+        unique: yes
+        state: present

T9/guided/system-process/set_default_boot_target_graphical.yml

@@ -0,0 +1,9 @@
+- name: change default boot target
+  hosts: webservers
+  become: true
+  tasks:
+    - name: default boot target is graphical
+      file:
+        src: /usr/lib/systemd/system/graphical.target
+        dest: /etc/systemd/system/default.target
+        state: link

T9/guided/system-software/ansible.cfg

@@ -0,0 +1,9 @@
+[defaults]
+remote_user=devops
+inventory=./inventory
+
+
+[privilege_escalation]
+become=yes
+become_method=sudo
+

T9/guided/system-software/inventory

@@ -0,0 +1,2 @@
+servera.lab.example.com
+

T9/guided/system-software/repo_playbook.yml

@@ -0,0 +1,34 @@
+- name: repo playbook
+  hosts: all
+  vars:
+    custom_pkg: example-motd
+  tasks:
+    - name: gather facts
+      package_facts: 
+        manager: auto
+    - name: show pkgs
+      debug:
+        var: ansible_facts.packages
+      when: custom_pkg in ansible_facts.packages
+    - name: repo exists
+      yum_repository: 
+        name: example-internal
+        description: example inc internal yum repo
+        file: example
+        baseurl: http://materials.example.com/yum/repository/
+        gpgcheck: yes
+    - name: rpm key installed
+      rpm_key:
+        key: http://materials.example.com/yum/repository/RPM-GPG-KEY-example
+        state: present
+    - name: install example package
+      yum:
+        name: "{{ custom_pkg }}"
+        state: present
+    - name: gather facts
+      package_facts: 
+        manager: auto
+    - name: show pkgs
+      debug:
+        var: ansible_facts.packages[custom_pkg]
+      when: custom_pkg in ansible_facts.packages

T9/guided/system-users/ansible.cfg

@@ -0,0 +1,9 @@
+[defaults]
+remote_user=devops
+inventory=./inventory
+
+
+[privilege_escalation]
+become=yes
+become_method=sudo
+

T9/guided/system-users/cleanup.yml

@@ -0,0 +1,31 @@
+---
+- name: Remove additional users
+  hosts: webservers
+  vars_files:
+    - vars/users_vars.yml
+
+  handlers:
+  - name: "Restart sshd"
+    service:
+      name: "sshd"
+      state: "restarted"
+
+  tasks:
+  - name: Remove the exercise users
+    user:
+      name: "{{ item.username }}"
+      state: absent
+    with_items: "{{ users }}"
+
+  - name: Remove home directories
+    file:
+      path: "/home/{{ item.username }}"
+      state: absent
+    with_items: "{{ users }}"
+
+  - name: Enable root SSH login
+    lineinfile:
+      dest: "/etc/ssh/sshd_config"
+      regexp: "^PermitRootLogin"
+      line: "PermitRootLogin yes"
+    notify: "Restart sshd"

T9/guided/system-users/files/user1.key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGtUW3ismHyuCW4CDdTVOOOq6aySdtYenXFWWx7HJa4VTepkG00aaLId9ocra10hc+MB0GTJMCyabDv3i8NKdi6GDH/aOLVsp/Ewy8DEzZMBlJDCt4v2i4/wU4liw6KgEFkZs+5hnqU8d4QzldyGJ5onr+AGvFOKG68CS0BBl40Z1twf1HhCyx8k6nzD2ovlkxWRFZKPAFrtPCBVvQDkOfVFZF+lwzaSztgAjbFZ4A9jqQyUYx4kOJ5DtRef36ucdUdVQale0+8lICl7/gb142SPpYfhxe88/BJScLPRjvVNeu1TxRmoHtVazqnAoRxQYAn2MoI6AG+w6QuZf8f7aL LabGradingKey

T9/guided/system-users/files/user2.key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGtUW3ismHyuCW4CDdTVOOOq6aySdtYenXFWWx7HJa4VTepkG00aaLId9ocra10hc+MB0GTJMCyabDv3i8NKdi6GDH/aOLVsp/Ewy8DEzZMBlJDCt4v2i4/wU4liw6KgEFkZs+5hnqU8d4QzldyGJ5onr+AGvFOKG68CS0BBl40Z1twf1HhCyx8k6nzD2ovlkxWRFZKPAFrtPCBVvQDkOfVFZF+lwzaSztgAjbFZ4A9jqQyUYx4kOJ5DtRef36ucdUdVQale0+8lICl7/gb142SPpYfhxe88/BJScLPRjvVNeu1TxRmoHtVazqnAoRxQYAn2MoI6AG+w6QuZf8f7aL LabGradingKey

T9/guided/system-users/files/user3.key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGtUW3ismHyuCW4CDdTVOOOq6aySdtYenXFWWx7HJa4VTepkG00aaLId9ocra10hc+MB0GTJMCyabDv3i8NKdi6GDH/aOLVsp/Ewy8DEzZMBlJDCt4v2i4/wU4liw6KgEFkZs+5hnqU8d4QzldyGJ5onr+AGvFOKG68CS0BBl40Z1twf1HhCyx8k6nzD2ovlkxWRFZKPAFrtPCBVvQDkOfVFZF+lwzaSztgAjbFZ4A9jqQyUYx4kOJ5DtRef36ucdUdVQale0+8lICl7/gb142SPpYfhxe88/BJScLPRjvVNeu1TxRmoHtVazqnAoRxQYAn2MoI6AG+w6QuZf8f7aL LabGradingKey

T9/guided/system-users/files/user4.key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGtUW3ismHyuCW4CDdTVOOOq6aySdtYenXFWWx7HJa4VTepkG00aaLId9ocra10hc+MB0GTJMCyabDv3i8NKdi6GDH/aOLVsp/Ewy8DEzZMBlJDCt4v2i4/wU4liw6KgEFkZs+5hnqU8d4QzldyGJ5onr+AGvFOKG68CS0BBl40Z1twf1HhCyx8k6nzD2ovlkxWRFZKPAFrtPCBVvQDkOfVFZF+lwzaSztgAjbFZ4A9jqQyUYx4kOJ5DtRef36ucdUdVQale0+8lICl7/gb142SPpYfhxe88/BJScLPRjvVNeu1TxRmoHtVazqnAoRxQYAn2MoI6AG+w6QuZf8f7aL LabGradingKey

T9/guided/system-users/files/user5.key.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDGtUW3ismHyuCW4CDdTVOOOq6aySdtYenXFWWx7HJa4VTepkG00aaLId9ocra10hc+MB0GTJMCyabDv3i8NKdi6GDH/aOLVsp/Ewy8DEzZMBlJDCt4v2i4/wU4liw6KgEFkZs+5hnqU8d4QzldyGJ5onr+AGvFOKG68CS0BBl40Z1twf1HhCyx8k6nzD2ovlkxWRFZKPAFrtPCBVvQDkOfVFZF+lwzaSztgAjbFZ4A9jqQyUYx4kOJ5DtRef36ucdUdVQale0+8lICl7/gb142SPpYfhxe88/BJScLPRjvVNeu1TxRmoHtVazqnAoRxQYAn2MoI6AG+w6QuZf8f7aL LabGradingKey

T9/guided/system-users/inventory

@@ -0,0 +1,3 @@
+[webservers]
+servera.lab.example.com
+

T9/guided/system-users/users.yml

@@ -0,0 +1,36 @@
+- name:
+  hosts: webservers
+  vars_files:
+    - vars/users_vars.yml
+  tasks:
+    - name: create webadmin group
+      group:
+        name: webadmin
+        state: present
+    - name: create user account
+      user:
+        name: "{{ item.username }}"
+        groups: "{{ item.groups }}"
+      loop: "{{ users }}"
+    - name: add authorized keys
+      authorized_key:
+        user: "{{ item.username }}"
+        key: "{{ lookup('file', 'files/'+item.username + '.key.pub') }}"
+      loop: "{{ users  }}"
+    - name: modify sudoers
+      copy:
+        content: "%webadmin ALL=(ALL) NOPASSWD: ALL"
+        dest: /etc/sudoers.d/webadmin
+        mode: 0440
+    - name: disable root ssh login 
+      lineinfile:
+        dest: /etc/ssh/sshd_config
+        regexp: "^PermitRootLogin"
+        line: "PermitRootLogin no"
+      notify: Restart sshd
+
+  handlers:
+    - name: Restart sshd
+      service:
+        name: sshd
+        state: restarted

T9/guided/system-users/vars/users_vars.yml

@@ -0,0 +1,12 @@
+---
+users:
+  - username: user1
+    groups: webadmin
+  - username: user2
+    groups: webadmin
+  - username: user3
+    groups: webadmin
+  - username: user4
+    groups: webadmin
+  - username: user5
+    groups: webadmin