Ansible check package installed in Linux

# Introduction

How to check for a package in the system using Ansible. I use vagrant to create VMs. My example Ansible creates multiple servers here. I will check the Apache package installed in Centos. Now, let’s go Ansible check package installed in Linux.

Ansible check package installed

Ansible file and folder

[vagrant@ansible_controller ~]$ tree .
.
├── ansible
│   ├── ansible.cfg
│   └── hosts
└── check-package.yml

We use the ansible module package_facts

Ansible script

---
- hosts: apache-server
  become: yes
  tasks:
    - name: "Check if APACHE is installed"
      package_facts:
        manager: "auto"
    - name: "Apache result"
      debug:
         msg: "Apache found"
      when: "'httpd' in ansible_facts.packages"
    - name: "Apache result"
      debug:
         msg: "Apache NOT found"
      when: "'httpd' not in ansible_facts.packages"

Ansible run command to check

[vagrant@ansible_controller ~]$ ansible-playbook -i ansible/hosts check-package.yml

The output terminal

[vagrant@ansible_controller ~]$ ansible-playbook -i ansible/hosts check-package.yml
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see details

PLAY [apache-server] ***************************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] **********************************************************************************************************************************************************************************************************************
ok: [server1]

TASK [Check if APACHE is installed] *********************************************************************************************************************************************************************************************************
ok: [server1]

TASK [Apache result] ************************************************************************************************************************************************************************************************************************
ok: [server1] => {
    "msg": "Apache found"
}

TASK [Apache result] ************************************************************************************************************************************************************************************************************************
skipping: [server1]

PLAY RECAP **********************************************************************************************************************************************************************************************************************************
server1                  : ok=3    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0

I will remove the apache package on server1 apache.

[vagrant@server1 ~]$ sudo yum remove httpd -y

Ansible runs the command to check again:

[vagrant@ansible_controller ~]$ ansible-playbook -i ansible/hosts check-package.yml

The output terminal

[vagrant@ansible_controller ~]$ ansible-playbook -i ansible/hosts check-package.yml
[WARNING]: Invalid characters were found in group names but not replaced, use -vvvv to see details

PLAY [apache-server] ***************************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] **********************************************************************************************************************************************************************************************************************
ok: [server1]

TASK [Check if APACHE is installed] *********************************************************************************************************************************************************************************************************
ok: [server1]

TASK [Apache result] ************************************************************************************************************************************************************************************************************************
skipping: [server1]

TASK [Apache result] ************************************************************************************************************************************************************************************************************************
ok: [server1] => {
    "msg": "Apache NOT found"
}

PLAY RECAP **********************************************************************************************************************************************************************************************************************************
server1                  : ok=3    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0

Conclusion

You have to use the Ansible check package installed in Linux. I hope will this your helpful. Thank you for reading the DevopsRoles page!