Ansible: Install NFS mounts (NFS server installation included)

linux

Posted By: admin June 19, 2024

NFS, or Network File Share is a service that allows client to store and share files and folders that will be stored in a centralized server.

Installing NFS server on RHEL 9 node is straight forwards. Here we are going to configure the Ansible server itself to host the NFS server too. The procedure is as follows:

 

[root@centos9vm ~]# mkdir /centos9vm_share
[root@centos9vm ~]# touch /centos9vm_share/file_1
[root@centos9vm ~]# dnf install nfs-utils -y
[root@centos9vm ~]# echo “/centos9vm_share *(ro)” >> /etc/exports

======
[root@centos9vm ~]# systemctl start nfs-server rpcbind
[root@centos9vm ~]# systemctl enable nfs-server rpcbind

======
[root@centos9vm ~]# showmount -e localhost
Export list for localhost:
/centos9vm_share *

======

Now let us see if we can attach this mountpoint on a client node 192.168.48.129. Let us create a playbook.

[root@centos9vm ~]# cat mount_nfs.yml

==== ==
–  – –
– name: Playbook to mount NFS shared storage
    hosts: 192.168.48.129
    tasks:
        – name: Task to mount NFS share
            ansible.posix.mount:
                src: 192.168.48.128:/centos9vm_share
                path: /mnt
                state: mounted
                fstype: nfs

==== ===

[root@centosMYOBvm ~]# df -h | grep mnt

There will none when running the above command as we have unmounted the mount during the first half of this exercise. Now let us run the playbook on the controller node.

[root@centos9vm ~]# ansible-navigator run -m stdout mount_nfs.yml

=== === =

PLAY [Playbook to mount NFS shared storage] ************************************

TASK [Gathering Facts] *********************************************************

ok: [192.168.48.129]

TASK [Task to mount NFS share] *************************************************
changed: [192.168.48.129]

PLAY RECAP *********************************************************************
192.168.48.129 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

==== ===

Let us check back on the managed node again. This time the NFS share should be added.

[root@centosMYOBvm ~]# df -h | grep mnt
192.168.48.128:/centos9vm_share 4.4G 3.0G 1.5G 68% /mnt

==== ===

Now let us see if we can unmount the share using a small tweak in the same playbook, but with the “state” parameter replacing the existing one.

[root@centos9vm ~]# cat mount_nfs.yml

===== ===
– – –
– name: Playbook to mount NFS shared storage
    hosts: 192.168.48.129
    tasks:
        – name: Task to mount NFS share
            ansible.posix.mount:
                src: 192.168.48.128:/centos9vm_share
                path: /mnt
                state: unmounted
                fstype: nfs
==== ====
[root@centos9vm ~]# ansible-navigator run -m stdout mount_nfs.yml

PLAY [Playbook to mount NFS shared storage] ************************************

TASK [Gathering Facts] *********************************************************
ok: [192.168.48.129]

TASK [Task to mount NFS share] *************************************************
changed: [192.168.48.129]

PLAY RECAP *********************************************************************
192.168.48.129 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

=== ===

Let us check back on the managed node now.

[root@centosMYOBvm ~]# df -h | grep mnt

We should not see any output now.