How do I speed up Ansible playbook execution?

How do I speed up Ansible playbook execution?

How to speed up Ansible playbooks drastically ?

1. Introduction.
2. Yum calls are expensive !
3. Avoid using Shell or Command modules.
4. Select the best Strategy.
5. Increase forks.
6. Configure Async tasks.
7. Divide playbooks and use tags.
8. Optimize Facts Gathering.

How do you stop Ansible Playbook running?

The default behavior is to pause with a prompt. You can use ctrl+c if you wish to advance a pause earlier than it is set to expire or if you need to abort a playbook run entirely. To continue early: press ctrl+c and then c . To abort a playbook: press ctrl+c and then a .

How do you trigger Ansible playbook?

Use ansible-pull The ansible-pull cli fetches a git repository from a remote server and then locally executes ansible-playbook playbook. yml in the top level of that repository. This is a great solution if your playbook only requires running tasks on the client.

How do you skip in Ansible?

Skipping a task by default

1. It only runs the task if a create_file exists and is set to 1;
2. By default it doesn’t exist and the task won’t run;
3. We need to check if it exists first because, if it doesn’t, the second condition would fail with an error;
4. create_file can be an environment variable.

Is Ansible slow?

However, this design also has its drawbacks: it can be painfully slow. In this lengthy post I will show you some good practices, configuration optimizations and modifications to increase the Ansible performance so your playbooks take much less time to finish.

What is ControlPersist SSH?

Without ControlPersist , once the first SSH session you open is closed, all other sessions on that connection are closed as well. In contrast, with ControlPersist set, the master connection will remain open for the specified number of seconds after your last SSH session on that connection has exited.

What is block in Ansible?

Blocks allow for logical grouping of tasks and in play error handling. Most of what you can apply to a single task (with the exception of loops) can be applied at the block level, which also makes it much easier to set data or directives common to the tasks.

How do I run a single task in Ansible?

How to run only one task in ansible playbook?

1. ansible-playbook roles/hadoop_primary/tasks/hadoop_master. yml –step –start-at-task=’start hadoop jobtracker services’
2. You will get a prompt: Perform task: start hadoop jobtracker services (y/n/c)
3. Answer y.
4. You will get a next prompt, press Ctrl-C.

Why does play get stuck in Ansible playbook?

If I run the playbook then it will get stuck because it will first run first play and tries to run second play where it gets stuck. If you do not have a task to configure the user required in the next play, then yes, it will fail (not get stuck).

Can you skip tasks based on tags in Ansible?

Once you have added tags to your tasks, includes, blocks, plays, roles, and imports, you can selectively execute or skip tasks based on their tags when you run ansible-playbook. Ansible runs or skips all tasks with tags that match the tags you pass at the command line.

What happens if the condition is not met in Ansible?

If the condition is not met, you’ll see the task named end play if nothing to upgrade appropriately skipped, which would provide more info to the user as to why the play is, or is not, ending. Of course, this will only end the current play and not all remaining plays in the playbook.

What is the difference between end _ play and end _ host in Ansible?

As reto mentions in comments, end_play ends the play for all hosts. In Ansible 2.8, end_host was added to meta: end_host (added in Ansible 2.8) is a per-host variation of end_play. Causes the play to end for the current host without failing it.