Ansible templates allows users to dynamically generate text-based files using templates, variables, and facts for configuration and other purposes.<\/p>\n
The difference between Ansible Facts and Templates is as follows:<\/p>\n
An ansible Fact stores variables that can be used by a playbook when executed<\/p>\n
An ansible template, which used ansible facts\u00a0and\u00a0pulls values of variable defined in facts, used them to create files which incorporates these values.<\/p>\n
Let us create a template file in the controller node in Jinja format:<\/p>\n
[root@centos9vm ~]#<\/strong> cat template.j2<\/p>\n ===== ==== {# This line will not appear any where. Below is a variable declared in playbook #}<\/p>\n My name is {{\u00a0 myName }}<\/p>\n ===== ===<\/p>\n Let us create a playbook to copy the template to managed node and execute the playbook to create a new file<\/p>\n [root@centos9vm ~]#<\/strong> cat example7.yml<\/p>\n ===== ==== \u00a0 \u00a0 \u00a0 \u00a0 vars:<\/em> \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – name: Using copied template to generate file<\/em> [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout example7.yml<\/p>\n ===== ====<\/p>\n PLAY [Share the jinja tempate with values to managed node] *********************<\/em><\/p>\n TASK [Gathering Facts] *********************************************************<\/em> TASK [Copy the template.j2 file to managed node] *******************************<\/em> TASK [Using copied template to generate file] **********************************<\/em> PLAY RECAP *********************************************************************<\/em> ===== ===<\/p>\n Let us verify if the file got created in the managed node<\/p>\n [root@centosMYOBvm ~]#<\/strong><\/span> cat file_created_from_template.txt<\/p>\n ===== ==== == SHIJU Creating a loop using variable list in playbook<\/span><\/strong> In the below example, we will create a playbook with a variable list called\u00a0fruitList<\/strong><\/em>, and use a jinja template to create a file in managed node that will have names of all fruits in the fruitList<\/em>.<\/p>\n [root@centos9vm ~]#<\/strong> cat temp.yml<\/p>\n ==== ====<\/em> [root@centos9vm ~]#<\/strong> cat shiju.j2 My name is {{ myName }}<\/em><\/p>\n {% for theFruits in fruitList %}<\/em> [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout temp.yml TASK [Gathering Facts] ********************************************************* TASK [Task to deploy a template] *********************************************** PLAY RECAP ********************************************************************* [root@centos9vm ~]#<\/strong> ssh 192.168.48.132 ‘cat \/webdevelop\/index.html’ My name is Shiju<\/p>\n Apple listing hostnames of group in Inventory file<\/strong><\/span> Now let us write a jinja template to loop through the list of managed hosts in the playbook and create a file in all managed nodes in the list, with the content being hostnames\u00a0 all nodes in the list<\/p>\n [root@centos9vm ~]#<\/strong> cat shiju.j2<\/p>\n ======== ==== ====== ==<\/p>\n [root@centos9vm ~]#<\/strong> cat temp.yml<\/p>\n ====== ===<\/em> ===== ===<\/em><\/p>\n [root@centos9vm ~]#<\/strong> cat inventory<\/p>\n ===== ==<\/em> [dev]<\/em> [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout temp.yml<\/p>\n PLAY [Playbook to install a template] *********************************************<\/p>\n TASK [Gathering Facts] ************************************************************ TASK [Task to deploy a template] ************************************************** PLAY RECAP ************************************************************************ ===== ===<\/p>\n [root@centos9vm ~]#<\/strong> ssh 192.168.48.132 ‘cat \/webdevelop\/index.html’ ==== ===<\/p>\n Now let us edit the jinja template to create content for an \/etc\/hosts file<\/p>\n ==== ====<\/p>\n [root@centos9vm ~]#<\/strong> cat shiju.j2 ===== ===<\/p>\n [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout temp.yml<\/p>\n [root@centos9vm ~]#<\/strong> ssh 192.168.48.132 ‘cat \/webdevelop\/index.html’<\/p>\n ==== ===== Ansible templates allows users to dynamically generate text-based files using templates, variables, and facts for configuration and other purposes. The difference between Ansible Facts and […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32,21,3],"tags":[],"class_list":["post-1117","post","type-post","status-publish","format-standard","hentry","category-ansible","category-devops","category-linux"],"_links":{"self":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1117"}],"version-history":[{"count":23,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1117\/revisions"}],"predecessor-version":[{"id":1570,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1117\/revisions\/1570"}],"wp:attachment":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1117"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nWelcome to the {{ ansible_facts[‘hostname] }} from the {{ ansible_facts[‘fqdn’] }}<\/em><\/p>\n
\n\u00a0 \u00a0 – – –<\/em>
\n\u00a0 \u00a0 – name: Share the jinja tempate with values to managed node<\/em>
\n\u00a0 \u00a0 \u00a0 \u00a0 hosts: testGRP<\/em><\/p>\n
\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0 \u00a0 \u00a0\u00a0myName: SHIJU<\/em>
\n\u00a0 \u00a0 \u00a0 \u00a0 tasks:<\/em><\/p>\n
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 ansible.builtin.template:<\/em>
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 src: \/root\/template.j2<\/em>
\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 dest: \/root\/file_created_from_template.txt<\/em>
\n==== ====<\/em><\/p>\n
\n ok: [192.168.48.129]<\/em><\/p>\n
\n changed: [192.168.48.129]<\/em><\/p>\n
\n changed: [192.168.48.129]<\/em><\/p>\n
\n 192.168.48.129 : ok=3 changed=2 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0<\/em><\/p>\n
\nWelcome to the centosMYOBvm from the centosMYOBvm<\/em><\/p>\n
\n===== === ==<\/p>\n
\n ====== @@@@@ ======<\/span><\/strong><\/p>\n
\n– – –<\/em>
\n– name: Playbook to install a template<\/em>
\n \u00a0 \u00a0 hosts: dev<\/em>
\n \u00a0 \u00a0 vars:<\/em>
\n \u00a0 \u00a0 \u00a0 \u00a0 myName: Shiju<\/em>
\n \u00a0 \u00a0 \u00a0 \u00a0 fruitList:<\/em>
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – Apple<\/em>
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – Orange<\/em>
\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 – Grapes<\/em>
\n \u00a0 \u00a0 tasks:<\/em>
\n \u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0– name: Task to deploy a template<\/em>
\n \u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0ansible.builtin.template:<\/em>
\n \u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0src: shiju.j2<\/em>
\n \u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0 \u00a0\u00a0dest: \/webdevelop\/index.html<\/em>
\n==== ====<\/p>\n
\n===== ==
\nWelcome to {{ ansible_facts[‘hostname’] }} on {{ ansible_facts[‘default_ipv4’][‘address’] }}<\/em>
\nWelcome to {{ ansible_facts[‘nodename’] }} on {{ ansible_facts[‘all_ipv4_addresses’] }}<\/em><\/p>\n
\n {{ theFruits }}<\/em>
\n{% endfor %}<\/em>
\n====== ==<\/p>\n
\n===== =====
\nPLAY [Playbook to install a template] ******************************************<\/p>\n
\nok: [192.168.48.132]<\/p>\n
\nok: [192.168.48.132]<\/p>\n
\n192.168.48.132 : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
\n====== ===<\/p>\n
\n===== =====
\nWelcome to centos9test1 on 192.168.48.132
\nWelcome to centos9test1 on [‘192.168.48.132’]<\/p>\n
\nOrange
\nGrapes
\n===== ===<\/p>\n
\n ===== @@@@@ =======<\/strong><\/span><\/p>\n
\n{% for i in groups[‘dev’]%}
\n{{ hostvars[i][‘ansible_facts’][‘hostname’] }}
\n{% endfor %}<\/p>\n
\n– – –<\/em>
\n\u00a0 \u00a0 \u00a0\u00a0– name: Playbook to install a template<\/em>
\n\u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0hosts: dev<\/em>
\n\u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0tasks:<\/em>
\n \u00a0 \u00a0 \u00a0\u00a0– name: Task to deploy a template<\/em>
\n\u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0ansible.builtin.template:<\/em>
\n\u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 \u00a0 \u00a0src: shiju.j2<\/em>
\n \u00a0 \u00a0\u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0dest: \/webdevelop\/index.html<\/em><\/p>\n
\n[prod]<\/em>
\n192.168.48.100<\/em><\/p>\n
\n192.168.48.132<\/em>
\n192.168.48.129<\/em>
\n===== ==<\/em><\/p>\n
\nok: [192.168.48.129]
\nok: [192.168.48.132]<\/p>\n
\nchanged: [192.168.48.129]
\nchanged: [192.168.48.132]<\/p>\n
\n192.168.48.129 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
\n192.168.48.132 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0<\/p>\n
\ncentos9test1
\ncentosMYOBvm<\/p>\n
\n{% for i in groups[‘dev’]%}
\n{{hostvars[i][‘ansible_facts’][‘default_ipv4’][‘address’]}} {{ hostvars[i][‘ansible_facts’][‘fqdn’] }} {{ hostvars[i][‘ansible_facts’][‘hostname’] }}
\n{% endfor %}<\/p>\n
\n192.168.48.132\u00a0 \u00a0 \u00a0 \u00a0 centos9test1\u00a0 \u00a0 \u00a0 \u00a0centos9test1
\n192.168.48.129\u00a0 \u00a0 \u00a0 \u00a0 centosMYOBvm\u00a0 \u00a0 \u00a0 \u00a0centosMYOBvm<\/p>\n","protected":false},"excerpt":{"rendered":"