iscsi_target

Ansible Role: iSCSI Target

This role configure a Linux-LIO based iSCSI target on a Linux host using targetcli

Additionaly this role includes own python mudules to interact with targetcli command which can be used separately for more advanced stuff. Modules implement checking, creating and deleting.

NOTE: Documentation about LIO and Target can be found [here] (https://linux-iscsi.org/wiki/Main_Page).

Requirements

This role is not creating any disks/partitions/LVs. It is expected that they are already present on machine or created by some other role. For example: ricsanfre.storage

Role Variables

To configure the iSCSI target, the following nested variable is used which defines how the configuration should look like.

iscsi_targets:
  - name: "iqn.2021-07.com.ricsanfre:target_server"
    disks:
      - name: lun_node1
        path: /dev/vg_iscsi/vg_iscsi_lv_node1
        type: block
        lunid: 0
      - name: lun_node2
        path: /dev/vg_iscsi/vg_iscsi_lv_node2
         type: block
        lunid: 1
      - name: lun_node3
        path: /dev/vg_iscsi/vg_iscsi_lv_node3
        type: block
        lunid: 2
      - name: lun_node4
        path: /dev/vg_iscsi/vg_iscsi_lv_node4
        type: block
        lunid: 3
    initiators:
      - name: iqn.2021-07.com.ricsanfre:node1
        authentication:
          userid: node1
          password: passwd1
          userid_mutual: sharedkey
          password_mutual: sharedsecret
        mapped_luns:
          - mapped_lunid: 0
            lunid: 0
          - mapped_lunid: 1
            lunid: 2
      - name: iqn.2021-07.com.ricsanfre:node2
        authentication:
          userid: node2
          password: passwd2
        mapped_luns:
          - mapped_lunid: 0
            lunid: 1
          - mapped_lunid: 1
            lunid: 3
            write_protect: 1
    portals:
      - ip: 192.168.1.45
        port: 5555
      - ip: 192.168.2.10

Dependencies

None.

Example Playbook

This example use ricsanfre.storage role for creating the logical volumes used to configure the iSCSI target

- hosts: all
  become: true
  gather_facts: true
  vars:
    storage_partitions:
      - name: /dev/vdb
        number: 1
        flags:
          - lvm
        part_end: 1GB
    storage_volumegroups:
      - name: vg_iscsi
        devices:
          - /dev/vdb1
    storage_volumes:
      - name: vg_iscsi_lv_node1
        vg: vg_iscsi
        size: 100
      - name: vg_iscsi_lv_node2
        vg: vg_iscsi
        size: 100
      - name: vg_iscsi_lv_node3
        vg: vg_iscsi
        size: 100
      - name: vg_iscsi_lv_node4
        vg: vg_iscsi
        size: 100
    iscsi_targets:
      - name: "iqn.2021-07.com.ricsanfre:{{ ansible_facts['nodename'] }}"
        disks:
          - name: lun_node1
            path: /dev/vg_iscsi/vg_iscsi_lv_node1
            type: block
            lunid: 0
          - name: lun_node2
            path: /dev/vg_iscsi/vg_iscsi_lv_node2
            type: block
            lunid: 1
          - name: lun_node3
            path: /dev/vg_iscsi/vg_iscsi_lv_node3
            type: block
            lunid: 2
          - name: lun_node4
            path: /dev/vg_iscsi/vg_iscsi_lv_node4
            type: block
            lunid: 3
        initiators:
          - name: iqn.2021-07.com.ricsanfre:node1
            authentication:
              userid: node1
              password: passwd1
            mapped_luns:
              - mapped_lunid: 0
                lunid: 0
              - mapped_lunid: 1
                lunid: 2
          - name: iqn.2021-07.com.ricsanfre:node2
            authentication:
              userid: node2
              password: passwd2
            mapped_luns:
              - mapped_lunid: 0
                lunid: 1
              - mapped_lunid: 1
                lunid: 3
                write_protect: 1
        portals:
          - ip: "{{ ansible_default_ipv4.address | default(ansible_all_ipv4_addresses[0]) }}"

  roles:
    - ricsanfre.storage
    - ricsanfre.iscsi_target