Ansible Conditional Task Execution 2021 | lzfwzc.com

There are many options to control execution flow in Ansible. More examples of supported conditionals can be located here:. Note that if you have several tasks that all share the same conditional statement, you can affix the conditional to a task include statement as below. All the tasks get evaluated, but the conditional is applied to each and every task:-import_tasks: tasks/sometasks.yml. It honestly feels like this behavior should be pushed lower into the tasks as opposed to the role level. Roles describe how to accomplish a specific state through a list of tasks, and the tasks themselves perform the steps in order to accomplish that specific state. tasks:-shell: echo "only on Red Hat 6, derivatives, and later" when: ansible_os_family == "RedHat" and ansible_lsb.major_releaseint >= 6 注解 the above example requires the lsb_release package on the target host in order to return the ansible_lsb.major_release fact. Ansible 1.3 Conditional Execution -- Very complete example with comments -- I find the conditional expressions to be ridiculously hard to get right in Ansible. I don't have a good model of what's going on under the surface so I often get it wrong. What makes it even harder is that there has been at least three different variants over the course.

Ansible 1.3 Conditional Execution. GitHub Gist: instantly share code, notes, and snippets. conditional execution of ansible failing. Ask Question Asked 3 years, 4 months ago. Active 3 years, 4 months ago. Viewed 51 times 0. I am trying to write a task to be executed over 4 groups. 2 of them are based on location 'sb' 'ada' and 2 of them based on distribution. each combination has separate template: sb - redhat - template 1 sb - aix - template 2 ada - redhat - template 3 ada - aix. ansible-playbook -i hosts --tags "install" -vvv With the above command, only the start-tomcat role will be called. The tag provided is case-sensitive. Ensure exact match is being passed to the command. How to Limit Execution by Hosts. There are two ways to achieve the execution of specific steps on specific hosts. For a specific role, one defines the hosts - as to which specific hosts that. 08.08.2016 · - hosts: localhost tasks: - command: "which httpd" register: httpd_result ignore_errors: true - debug: msg="found http" when: httpd_result.rc == 0 - debug: msg="not found httpd" when: httpd_result.rc!=0 Here, instead of debug statements, you can put whatever conditional tasks you need to run. Hope this helps.

Ansible can report execution time for each task. And total time taken for playbook execution. It is more useful to estimate the time of completion as specially for long running jobs. Defined here are different ways to handle these issues both in the same playbook or play or by separating out tasks to other task files. Task separation via Variables This method pulls in variables based on the client's OS and uses those variables specific to that machine's needs. In this post, we are going to see how to use conditional statements of Ansible such as when, changed_when, failed_when and where to use them appropriately and how it works. By these conditional modules, Ansible provides a way for us to define when should ansible run a certain task or consider the executed task as Success or failure.

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