This document is indented to demonstrate various playbooks that makes use of different modules and their functionalities.<\/p>\n
Pinging managed nodes<\/span><\/strong><\/p>\n [root@centos9vm ~]#<\/strong> cat inventory<\/p>\n ====== ======= = [testGRP]<\/em> ===== ===== ========= ==== ==== ==== == ===== ====<\/p>\n PLAY [An example to ping all managed nodes in the inventory file] **************<\/em><\/p>\n TASK [Gathering Facts] *********************************************************<\/em> TASK [Ping all] ****************************************************************<\/em> PLAY RECAP *********************************************************************<\/em> ====== ====<\/p>\n In the above example password-less ssh login was not configured with\u00a0192.168.48.129<\/em><\/p>\n Running Arbitrary Commands on Managed Hosts<\/strong><\/span><\/p>\n We can execute scripts and command present in managed nodes from an ansible controller. A use case can be where a script is copied from controller node to managed node, and then executed from the managed node itself.<\/p>\n Let us ensure the script of command exists in the managed node:<\/p>\n [root@centos9vm ~]#<\/strong> ssh 192.168.48.129 ‘cat \/root\/shiju_touch.sh’<\/p>\n ===== == ===== ===<\/p>\n Let us create a playbook<\/p>\n [root@centos9vm ~]#<\/strong> cat runCommand.yml<\/p>\n ==== ==== ===== ====<\/p>\n [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout runCommand.yml<\/p>\n ===== ==<\/p>\n PLAY [An example to run a command in managed node] ****************************<\/em><\/p>\n TASK [Gathering Facts] *********************************************************<\/em> TASK [Execute a command] *******************************************************<\/em> PLAY RECAP *********************************************************************<\/em> ===== ==== Check is a\u00a0website can be accessed<\/strong><\/span><\/p>\n Let us create a playbook that installs httpd, created a webpage, and then starts the service. Finally we will verify is the site can be accessed and gets a valid response.<\/p>\n [root@centos9vm ~]# cat acessWebsite.yml<\/p>\n ==== ==== === – name: Add an index file<\/em> – name: start httpd<\/em> – name: verify webpage<\/em> ==========<\/p>\n Let us run the playbook and verify.<\/p>\n [root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout acessWebsite.yml<\/p>\n ===== ===<\/p>\n PLAY [install webserver and access webpage] ************************************<\/em><\/p>\n TASK [Gathering Facts] *********************************************************<\/em> TASK [install httpd] ***********************************************************<\/em> TASK [Add an index file] *******************************************************<\/em> TASK [start httpd] *************************************************************<\/em> TASK [verify webpage] **********************************************************<\/em> PLAY RECAP *********************************************************************<\/em> ==== =<\/p>\n","protected":false},"excerpt":{"rendered":" This document is indented to demonstrate various playbooks that makes use of different modules and their functionalities. Pinging managed nodes [root@centos9vm ~]# cat inventory ====== […]<\/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-1127","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\/1127","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=1127"}],"version-history":[{"count":18,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1127\/revisions"}],"predecessor-version":[{"id":1171,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=\/wp\/v2\/posts\/1127\/revisions\/1171"}],"wp:attachment":[{"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1127"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1127"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/shijuvarghese.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1127"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n192.168.48.128<\/em>
\n192.168.48.129<\/em><\/p>\n
\n192.168.48.128<\/em>
\n192.168.48.129<\/em><\/p>\n
\n[root@centos9vm ~]#<\/strong> cat ping_all.yml<\/p>\n
\n– – –<\/em>
\n– name: An example to ping all managed nodes in the inventory file<\/em>
\n hosts: all<\/em>
\n tasks:<\/em>
\n – name: Ping all<\/em>
\n ansible.builtin.ping:<\/em><\/p>\n
\n[root@centos9vm ~]#<\/strong> ansible-navigator run -m stdout ping_all.yml<\/p>\n
\n fatal: [192.168.48.128]: UNREACHABLE! => {“changed”: false, “msg”: “Failed to connect to the host via ssh: root@192.168.48.128: Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).”, “unreachable”: true}<\/em>
\n ok: [192.168.48.129]<\/em><\/p>\n
\n ok: [192.168.48.129]<\/em><\/p>\n
\n 192.168.48.128 : ok=0 changed=0 unreachable=1 failed=0 skipped=0 rescued=0 ignored=0<\/em>
\n 192.168.48.129 : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0<\/em>
\n Please review the log for errors.<\/em><\/p>\n
\n#!\/usr\/bin\/bash<\/em>
\n\/usr\/bin\/touch \/tmp\/sam123.txt<\/em><\/p>\n
\n– – –<\/em>
\n– name: An example to run a command in managed node<\/em>
\n hosts: 192.168.48.129<\/em>
\n tasks:<\/em>
\n – name: Execute a command<\/em>
\n ansible.builtin.command:<\/em>
\n cmd: \/root\/shiju_touch.sh<\/em><\/p>\n
\nok: [192.168.48.129]<\/em><\/p>\n
\nchanged: [192.168.48.129]<\/em><\/p>\n
\n192.168.48.129 : ok=2 changed=1 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0<\/em>
\n===== ====
\n[root@centos9vm ~]#<\/strong> ssh 192.168.48.129 ‘ls -l \/tmp\/sam*’<\/p>\n
\n-rw-r–r–. 1 root root 0 Mar 5 17:37 \/tmp\/sam123.txt<\/em><\/p>\n
\n– – –<\/em>
\n – name: install webserver and access webpage<\/em>
\n hosts: 192.168.48.129<\/em>
\n tasks:<\/em>
\n – name: install httpd<\/em>
\n ansible.builtin.dnf:<\/em>
\n name: httpd<\/em>
\n state: latest<\/em><\/p>\n
\n ansible.builtin.copy:<\/em>
\n content: “Hello site\\n”<\/em>
\n dest: \/var\/www\/html\/index.html<\/em><\/p>\n
\n ansible.builtin.service:<\/em>
\n name: httpd<\/em>
\n state: started<\/em>
\n enabled: true<\/em><\/p>\n
\n ansible.builtin.uri:<\/em>
\n url: http:\/\/192.168.48.129<\/em>
\n return_content: true<\/em>
\n status_code: 200<\/em><\/p>\n
\nok: [192.168.48.129]<\/em><\/p>\n
\nok: [192.168.48.129]<\/em><\/p>\n
\nchanged: [192.168.48.129]<\/em><\/p>\n
\nok: [192.168.48.129]<\/em><\/p>\n
\nok: [192.168.48.129]<\/em><\/p>\n
\n192.168.48.129<\/em><\/p>\n