clase 03/03/23

iscsi-automation/ansible.cfg

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+[defaults]
+inventory=inventory
+remote_user=devops

iscsi-automation/cleanup.yml

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+---
+- name: Ensure /data is cleaned up
+  hosts: initiators
+  become: true
+
+  tasks:
+    - name: the device does not contain a file system
+      include_role:
+        name: rhel-system-roles.storage
+      vars:
+        storage_volumes:
+          - name: devdata
+            state: absent
+            type: disk
+            disks:
+              - "{{ item.key }}"
+            mount_point: /data
+            fs_type: xfs
+            mount_options: '_netdev'
+      loop: "{{ ansible_facts['devices'] | dict2items }}"
+      when: item.value['model'] == "serverd.disk1"
+
+    - name: the iSCSI target is disconnected
+      open_iscsi:
+        portal: 172.25.250.13
+        port: '3260'
+        target: iqn.2014-06.com.example:serverd
+        discover: no
+        login: no
+        auto_node_startup: no
+      ignore_errors: yes
+
+    - name: the iscsi-initiator-utils package is not installed
+      yum:
+        name: iscsi-initiator-utils
+        state: absent
+
+    - name: the iSCSI configuration files are not present
+      file:
+        path: "{{ item }}"
+        state: absent
+      loop:
+        - /etc/iscsi
+        - /var/lib/iscsi
+        - /var/lock/iscsi

iscsi-automation/inventory

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+[initiators]
+servera.lab.example.com

iscsi-automation/playbook.yml

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+---
+- name: Ensure /data is mounted from serverd iSCSI target
+  hosts: initiators
+  become: true
+
+  tasks:
+    - name: the iscsi-initiator-utils package is installed
+      yum:
+        name: iscsi-initiator-utils
+        state: present
+
+    - name: the IQN is set for the initiator
+      template:
+        src: templates/initiatorname.iscsi.j2
+        dest: /etc/iscsi/initiatorname.iscsi
+        owner: root
+        group: root
+        mode: 644
+      notify: restart iscsid
+
+    # Forces the handler to run so that the iscsid service is restarted
+    # and is aware of the new initiator IQN
+    - meta: flush_handlers
+
+    - name: the iSCSI target is discovered and available
+      open_iscsi:
+        portal: 172.25.250.13
+        port: 3260
+        target: iqn.2014-06.com.example:serverd
+        discover: yes
+        login: yes
+      register: target
+
+    - name: display the discovered devices
+      debug:
+        var: target['devicenodes']
+
+    - name: the new device is formatted and mounted under /data
+      include_role:
+        name: rhel-system-roles.storage
+      vars:
+        storage_volumes:
+          - name: devdata
+            state: present
+            type: disk
+            disks:
+              - "{{ target['devicenodes'][0] }}"
+            mount_point: /data
+            fs_type: xfs
+            mount_points: '_netdev'
+            #FIXME: see /usr/share/doc/rhel-system-roles/storage/README.md
+            #       Set the mount point to /data, the file system type to xfs,
+            #       and add the _netdev mount option.
+
+  handlers:
+    - name: restart iscsid
+      service:
+        name: iscsid
+        state: restarted

iscsi-automation/solution/playbook.yml

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+---
+- name: Ensure /data is mounted from serverd iSCSI target
+  hosts: initiators
+  become: true
+
+  tasks:
+    - name: the iscsi-initiator-utils package is installed
+      yum:
+        name: iscsi-initiator-utils
+        state: present
+
+    - name: the IQN is set for the initiator
+      template:
+        dest: /etc/iscsi/initiatorname.iscsi
+        src: templates/initiatorname.iscsi.j2
+        mode: '644'
+        owner: root
+        group: root
+      notify: restart iscsid
+
+    # Forces the handler to run so that the iscsid service is restarted
+    # and is aware of the new initiator IQN
+    - meta: flush_handlers
+
+    - name: the iSCSI target is discovered and available
+      open_iscsi:
+        portal: 172.25.250.13
+        port: '3260'
+        target: iqn.2014-06.com.example:serverd
+        discover: yes
+        login: yes
+      register: target
+
+    - name: display the discovered devices
+      debug:
+        var: target['devicenodes']
+
+    - name: the new device is formatted and mounted under /data
+      include_role:
+        name: rhel-system-roles.storage
+      vars:
+        storage_volumes:
+          - name: devdata
+            state: present
+            type: disk
+            disks:
+              - "{{ target['devicenodes'][0] }}"
+            mount_point: /data
+            fs_type: xfs
+            mount_options: '_netdev'
+
+  handlers:
+    - name: restart iscsid
+      service:
+        name: iscsid
+        state: restarted

iscsi-automation/templates/initiatorname.iscsi.j2

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+InitiatorName=iqn.2014-06.com.example:{{ ansible_facts['hostname'] }}

iscsi-automation/unmount.yml

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+---
+- name: Ensure /data is not mounted
+  hosts: initiators
+  become: true
+
+  tasks:
+    - name: the new device is not mounted
+      mount:
+        path: /data
+        state: absent
+
+    - name: the iSCSI target is disconnected
+      open_iscsi:
+        portal: 172.25.250.13
+        port: '3260'
+        target: iqn.2014-06.com.example:serverd
+        discover: no
+        login: no
+        auto_node_startup: no