{"id":1137,"date":"2019-07-02T16:27:00","date_gmt":"2019-07-02T10:57:00","guid":{"rendered":"http:\/\/blogs.opstree.com\/?p=1137"},"modified":"2019-08-27T16:29:29","modified_gmt":"2019-08-27T10:59:29","slug":"speeding-up-ansible-execution-part-2","status":"publish","type":"post","link":"https:\/\/opstree.com\/blog\/2019\/07\/02\/speeding-up-ansible-execution-part-2\/","title":{"rendered":"Speeding up Ansible Execution Part 2"},"content":{"rendered":"\n

MITOGEN<\/strong><\/p>\n\n\n\n


In the previous post, we discussed various ways to reduce the ansible-playbook execution time, those changes were mostly made in the ansible config file, by adding or adjusting certain parameters in the file. But as you may have noticed that those methods were not that effective in certain cases, while using those methods we have to be very cautious about the result as they may affect ansible performance in one way or the other.<\/p>\n\n\n\n


\nGenerally,\n for the slower ansible execution, the main culprit is the way ansible \nis executed on the hosts. It creates multiple SSH connections and does \nnot fully utilize the available resources. To tackle this problem, \nMITOGEN came to rescue !!!<\/p>\n\n\n\n

Mitogen is a distributed programming library for Python.\nThe Mitogen extension is a set of plug-ins for Ansible that enable it to operate via Mitogen,\nvastly improving its performance and enhancing its functional capability.<\/p>\n\n\n\n

We\nall know about the strategies in ansible \u2013 linear, free & debug., the mitogen\nis just defined in the strategy column of the config file, so it is just a\nstrategy, we are not making any other changes in the config file of the ansible\nso it is not affecting any other parameter, it is just the way, playbooks will\nbe executed on the hosts.<\/p>\n\n\n\n

Now coming to the mitogen installation part, we just have to\ndownload this<\/a> package<\/a> at a particular\nlocation and make some changes in the ansible config file as shown below,<\/p>\n\n\n\n

[defaults]<\/strong><\/p>\n\n\n\n

strategy_plugins = \/path\/to\/mitogen\/ansible_mitogen\/plugins\/strategystrategy = mitogen_linear<\/strong><\/p>\n\n\n\n

we\nhave to define the path where we have stored our mitogen files, and mention the\nstrategy as \u201cmitogen_linear\u201d, under the default section of the config file, and\nwe are good to go.<\/p>\n\n\n\n

Now, after the Mitogen installation part, when we run our playbook, we will notice a reasonable reduction in the execution\ntime,<\/p>\n\n\n\n

Mitogen\nis fast because of the following reasons,<\/p>\n\n\n\n