Ansible cheat sheet » History » Revision 6
Revision 5 (Jon Goldberg, 07/15/2021 03:42 PM) → Revision 6/24 (Jon Goldberg, 01/17/2022 07:08 PM)
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# Ansible cheat sheet
This page will cover some helpful one-line commands we can execute with Ansible to accomplish various tasks. Always run **git pull** and **git submodule update** before executing these commands.
### #### Roll back a site to the latest commit (e.g. after a failed merge):
```shell
ansible --become -m shell -a 'cd {{civiroot}} && git clean -fdx {{civiroot}} && get reset --hard HEAD' mysite1.local,mysite2.local
```
#### Synchronize a non-canonical site with the live site's database
```
ansible-playbook main-playbook.yml --tags site-db-sync -l mysite.local
```
* This works on test and dev live sites.
* Depending on the sync strategy on the website inventory, it will pull from last night's backup, or sync directly from the live site, or use the Pantheon API to make a backup/download. site.
* Only sites that pull from backup can sync to a site that's not on your local machine at present (I'll fix this at some point).
### Ad-hoc examples
#### Revert a failed local update
```shell
ansible '*.local' -m shell -a "cd {{webroot}} && git checkout ." --become --become-user "{{ run_as_user }}"
```
#### Roll back a site to the latest commit (e.g. after a failed merge):
```shell
ansible --become -m shell -a 'cd {{civiroot}} && git clean -fdx {{civiroot}} && get reset --hard HEAD' mysite1.local,mysite2.local
```
#### Send an arbitrary SQL statement to all Civi test instances with maintenance contracts
This is considerably trickier to handle places where we don't have root, but works
```shell
ansible --become --become-user="{{ run_as_user }}" -m shell -a "PATH=\$HOME/bin:\$PATH; echo \"UPDATE civicrm_job SET is_active = 0 WHERE api_action = 'group_rebuild';\" | cv --cwd={{ webroot }} sql" 'maintenance_civi:&websites_test'
````
#### Set CLI PHP version across all servers
This is an example of server-level changes (others are site-level).
```shell
ansible --become -m command -a 'update-alternatives --set php /usr/bin/php7.4' vps
```