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ansible [2026/03/01 12:01] – Added code execution reddyansible [2026/03/01 19:14] (current) – reddy
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 ansible -i inventory all -m shell -a 'echo "A"' --limit server1  # To run only on server 1  ansible -i inventory all -m shell -a 'echo "A"' --limit server1  # To run only on server 1 
 +
 +# -f 5  # To run 5 tasks at a time
 </code> </code>
  
Line 92: Line 94:
   hosts: all   hosts: all
   tasks:   tasks:
 +  
     - name: Task 1     - name: Task 1
       yum_repository:       yum_repository:
Line 98: Line 101:
         baseurl: https://download.fedoraproject.org/pub/epel/$releasever/$basearch/         baseurl: https://download.fedoraproject.org/pub/epel/$releasever/$basearch/
         gpgcheck: no         gpgcheck: no
 +  
     - name: Task 2     - name: Task 2
       dnf:       dnf:
         name: httpd         name: httpd
         state: latest  # present|absent|latest         state: latest  # present|absent|latest
 +
 +    - name: Task 2
 +      dnf:
 +        name: 
 +          - net-tools
 +          - bind-utils
 +          - telnet
 +          - nmap
 +          - vim-enhanced
 +          - sysstat
 +          - tuned
 +          - numactl
 +  
     - name: Task 3     - name: Task 3
       dnf: name=http://example.com/some_package.rpm       dnf: name=http://example.com/some_package.rpm
 +  
     - name: Task 4     - name: Task 4
       apt_repository:       apt_repository:
         repo: deb http://archive.canonical.com/ubuntu hardy partner         repo: deb http://archive.canonical.com/ubuntu hardy partner
         state: present         state: present
 +  
     - name: Task 5     - name: Task 5
       apt:       apt:
Line 113: Line 132:
         update_cache: yes         update_cache: yes
         state: present         state: present
 +  
     - name: Task 6     - name: Task 6
       apt:       apt:
         deb: https://example.com/some_package.deb         deb: https://example.com/some_package.deb
 +  
     - name: Task 7     - name: Task 7
       copy:       copy:
Line 121: Line 142:
         dest: /tmp/file1         dest: /tmp/file1
         remote_src: true         remote_src: true
 +  
     - name: Task 8     - name: Task 8
       template:       template:
Line 127: Line 149:
       vars:       vars:
         var1: 1         var1: 1
 +  
     - name: Task 8     - name: Task 8
       shell: |       shell: |
         command1         command1
         command2         command2
 +  
     - name: Task 7     - name: Task 7
       file:       file:
Line 138: Line 162:
         group: root         group: root
         mode: "0777"         mode: "0777"
 +  
     - name: Task 8     - name: Task 8
       sysctl:       sysctl:
Line 145: Line 170:
         state: present         state: present
         reload: true         reload: true
 +  
 +    - name: Task 8
 +      selinux:
 +        policy: targeted
 +        state: permissive
 +  
 +    - name: Task 8
 +      service:
 +        name: firewalld
 +        state: stopped  # started|stopped|reloaded|restarted
 +        enabled: no
 +  
     - name: Task 8     - name: Task 8
       get_url:       get_url:
Line 152: Line 189:
         http_proxy: https://example.com:8080         http_proxy: https://example.com:8080
         https_proxy: https://example.com:8080         https_proxy: https://example.com:8080
 +  
     - name: Task 6     - name: Task 6
       local_action: echo "Hello"       local_action: echo "Hello"
 +  
 +    - name: Task 6
 +      script: /tmp/script1
 +  
     - name: Task 6     - name: Task 6
       lineinfile:       lineinfile:
Line 162: Line 204:
                  
 </code> </code>
 +
 +<code>
 +# Tasks to get the output from one command and use as conditional for another command
 +
 +- name: Check ping
 +  delegate_to: srv1
 +  shell: ping -c 1 somehost
 +  register: reachableping
 +  ignore_errors: true
 +
 +- name: Do something
 +  delegate_to: srv1
 +  shell: ./run_cmd_1
 +  ignore_errors: true
 +  when: "'100.0% packet loss' in reachableping.stdout"
 +</code>
 +
 +<code>
 +# Variables can be used for an entire block
 +
 +- name: Demonstrate environment variable in block
 +  hosts: localhost
 +  connection: local
 +  gather_facts: false
 +  vars:
 +    motd: Hello World
 +  tasks:
 +  - block:
 +
 +    - name: Print variable
 +      shell: "echo $motd"
 +      register: theoutput
 +
 +    - debug: var=theoutput.stdout
 +      environment:
 +        motd: "{{ motd }}"
 +</code>
 +
 +===== Ansible Navigator =====
 +
 +Ansible Navigator uses podman to create an EE environment to run the Ansible playbooks and provides a text user interface to navigate through the documentation, inventory, and execution results.
 +
 +Install Ansible Navigator with:
 +
 +<code>
 +pip3 install ansible-dev-tools ansible-navigator --user
 +
 +# or
 +
 +dnf install \
 +  --enablerepo=ansible-automation-platform-2.2-for-rhel-8-x86_64-rpms \
 +  ansible-navigator
 +</code>
 +
 +Use it with:
 +
 +<code>
 +ansible-navigator run playbook1.yaml
 +
 +ansible-navigator doc service  # Type ":{{ examples }}" to scroll to the example section of the doc
 +
 +ansible-navigator doc service -m stdout  # Getting output to stdout lets you use standard tools to search
 +</code>
 +
 +===== Common Ansible Problems =====
 +
 +<code>
 +ERROR: Ansible requires the locale encoding to be UTF-8; Detected ISO8859-1.
 +
 +Set the following environment variables within the shell before running ansible / ansible-playbook
 +
 +LANG="en_US.UTF-8"
 +LC_CTYPE="en_US.UTF-8"
 +</code>
 +
 +===== Also See =====
 +
 +  * [[http://miro.borodziuk.eu/index.php/2020/03/09/ansible-delegation/|Ansible Delegation]]
 +  * [[http://miro.borodziuk.eu/index.php/2020/02/13/ansible-vault/|Ansible Vault]]
 +  * [[http://miro.borodziuk.eu/index.php/2020/02/12/ansible-galaxy/|Ansible Galaxy]]
 +  * [[http://miro.borodziuk.eu/index.php/2020/03/22/ansible-paralellism/|Ansible Parallelism]]
 +  * [[https://www.redhat.com/sysadmin/faster-ansible-playbook-execution|8 Ways to Speed Up Your Ansible Playbooks]]
 +  * [[https://www.redhat.com/sysadmin/faster-ansible-modules|5 Ways to Make Your Ansible Modules Work Faster]]
  
  
ansible.1772362884.txt.gz · Last modified: by reddy
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