2 - Ansible common modules Part 2

  1. Overview
    At this post we will reveal below ansible modules and get them on practice with examples
    command copy file
    user group service
    script    





  2. Ansible module - user
    [root@shell-master ~]# ansible-doc -s user
    - name: Manage user accounts

    Example: Create new user
    Run below command to create user wayne02

    [root@shell-master ~]# ansible webservers -m user -a "name=wayne02 home=/home/wayne02 shell=/bin/bash"

    2 - Ansible common modules Part 2

    After the command finished, switch to shell-node1, checking if the user created:
    2 - Ansible common modules Part 2

  3. Ansible module - group
    [root@shell-master ~]# ansible-doc -s group
    - name: Add or remove groups

    Example: Add new group
    Run below command to create new group testing-group

    [root@shell-master ~]# ansible webservers -m group -a "name=testing-group state=present"

    2 - Ansible common modules Part 2

     Switch back to shell-node1, verify if the group been created
    2 - Ansible common modules Part 2

  4. Ansible module - service
    [root@shell-master ~]# ansible-doc -s service
    - name: Manage services

    By follow the help documentation, you can use below command format to perform service management, like restart, stop etc.

    ansible webservers -m service -a "name=servicename ......"
  5. Ansible module - script
    [root@shell-master ~]# ansible-doc -s script
    - name: Runs a local script on a remote node after transferring it

    Example: Build a local script, then transfer it to remote server and execute it
    On shell-master, build a script file named testing.sh with below content (The scripts will create 1 readme.txt under /tmp/, and also create 10 data files under /tmp/):

    #!/bin/bash
    
    cd /tmp/
    # create readme.txt under /tmp/ cat > readme.txt << _EOF_ This is a testing script We'll create 10 data files under /tmp/ _EOF_ touch data{0..9}.data

    After create the shell script file, you need to change it's access mode, let it can be executed by using below command:

    [root@shell-master ~]# chmod 755 testing.sh
    [root@shell-master ~]# ls -lh testing.sh
    -rwxr-xr-x. 1 root root 169 Aug  8 08:53 testing.sh

    Alright, let's using Ansible to post this script to be execution on remote server. Running below command to invoke ansible script module:

    [root@shell-master ~]# ansible webservers -m script -a "testing.sh"

    2 - Ansible common modules Part 2

    Then switch back to shell-node1, let's verify if the readme.txt and data files been created or not:
    2 - Ansible common modules Part 2

  6. All good with Ansible common modules now, next let's research on Ansible playbook.
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