NFS Server - Export an NFS Share in RedHat-like systems: RHEL, CentOS, CentOS Stream, Fedora - Ansible modules yum, file, lineinfile, command, firewalld, service

---
- name: nfs service demo
  hosts: all
  become: true
  vars:
    share: "/nfs/share"
    options: "192.168.0.0/24(rw,sync,root_squash)"
    permission: '0777'
  tasks:
    - name: NFS server installed
      ansible.builtin.yum:
        name:
          - nfs-utils
          - nfs4-acl-tools
        state: present

    - name: share directory exists
      ansible.builtin.file:
        path: "{{ share }}"
        state: directory
        mode: "{{ permission }}"
        owner: root
        group: root

    - name: share in /etc/exports file
      ansible.builtin.lineinfile:
        path: /etc/exports
        state: present
        line: '{{ share }} {{ options }}'
      notify: restart NFS server

    - name: export share
      ansible.builtin.command: "exportfs -rav"

    - name: firewall enabled
      ansible.posix.firewalld:
        service: "{{ item }}"
        state: enabled
        permanent: true
        immediate: true
      with_items:
        - nfs
        - rpc-bind
        - mountd

  handlers:
    - name: restart NFS server
      ansible.builtin.service:
        name: nfs-server
        state: restarted
        enabled: true

$ ansible-playbook -i virtualmachines/demo/inventory services/nfs_redhat.yml
PLAY [nfs service demo] ***************************************************************************
TASK [Gathering Facts] ****************************************************************************
ok: [demo.example.com]
TASK [NFS server installed] ***********************************************************************
changed: [demo.example.com]
TASK [share directory exists] *********************************************************************
changed: [demo.example.com]
TASK [share in /etc/exports file] *****************************************************************
changed: [demo.example.com]
TASK [export share] *******************************************************************************
changed: [demo.example.com]
TASK [firewall enabled] ***************************************************************************
changed: [demo.example.com] => (item=nfs)
changed: [demo.example.com] => (item=rpc-bind)
changed: [demo.example.com] => (item=mountd)
RUNNING HANDLER [restart NFS server] **************************************************************
changed: [demo.example.com]
PLAY RECAP ****************************************************************************************
demo.example.com           : ok=7    changed=6    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

$ ssh [email protected]
[devops@demo ~]$ sudo su
[root@demo devops]# cat /etc/redhat-release 
Red Hat Enterprise Linux release 8.4 (Ootpa)
[root@demo devops]# rpm -qa | grep nfs-utils
[root@demo devops]# systemctl status nfs-server.service
Unit nfs-server.service could not be found.
[root@demo devops]# exportfs -s
bash: exportfs: command not found
[root@demo devops]# cat /etc/exports
[root@demo devops]# ls -al /etc/exports
-rw-r--r--. 1 root root 0 Sep 10  2018 /etc/exports
[root@demo devops]# ls -al /nfs/share
ls: cannot access '/nfs/share': No such file or directory
[root@demo devops]# firewall-cmd --state
running
[root@demo devops]# firewall-cmd --list-services
cockpit dhcpv6-client ssh
[root@demo devops]# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0 eth1
  sources: 
  services: cockpit dhcpv6-client ssh
  ports: 
  protocols: 
  masquerade: no
  forward-ports: 
  source-ports: 
  icmp-blocks: 
  rich rules: 
[root@demo devops]#

$ ssh [email protected]
Last login: Sun Nov 28 16:52:14 2021 from 192.168.0.103
[devops@demo ~]$ sudo su
[root@demo devops]# rpm -qa | grep nfs-utils
nfs-utils-2.3.3-46.el8.x86_64
[root@demo devops]# systemctl status nfs-server.service
● nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)
  Drop-In: /run/systemd/generator/nfs-server.service.d
           └─order-with-mounts.conf
   Active: active (exited) since Sun 2021-11-28 16:51:39 UTC; 1min 22s ago
  Process: 7484 ExecStart=/bin/sh -c if systemctl -q is-active gssproxy; then systemctl reload gss>
  Process: 7472 ExecStart=/usr/sbin/rpc.nfsd (code=exited, status=0/SUCCESS)
  Process: 7471 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
 Main PID: 7484 (code=exited, status=0/SUCCESS)
Nov 28 16:51:39 demo.example.com systemd[1]: Starting NFS server and services...
Nov 28 16:51:39 demo.example.com systemd[1]: Started NFS server and services.
[root@demo devops]# exportfs -s
/nfs/share  192.168.0.0/24(sync,wdelay,hide,no_subtree_check,sec=sys,rw,secure,root_squash,no_all_squash)
[root@demo devops]# cat /etc/exports
/nfs/share 192.168.0.0/24(rw,sync,root_squash)
[root@demo devops]# ls -al /nfs/share
total 0
drwxrwxrwx. 2 root root  6 Nov 28 16:51 .
drwxrwxrwx. 3 root root 19 Nov 28 16:51 ..
[root@demo devops]# firewall-cmd --state
running
[root@demo devops]# firewall-cmd --list-services
cockpit dhcpv6-client mountd nfs rpc-bind ssh
[root@demo devops]# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: eth0 eth1
  sources: 
  services: cockpit dhcpv6-client mountd nfs rpc-bind ssh
  ports: 
  protocols: 
  masquerade: no
  forward-ports: 
  source-ports: 
  icmp-blocks: 
  rich rules: 
[root@demo devops]#