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atlantis/runatlantis.io/docs/automerging.md
2024-11-02 20:09:17 +00:00

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# Automerging
Atlantis can be configured to automatically merge a pull request after all plans have
been successfully applied.
![Automerge](./images/automerge.png)
## How To Enable
Automerging can be enabled either by:
1. Passing the `--automerge` flag to `atlantis server`. This sets the parameter globally; however, explicit declaration in the repo config will be respected and take priority.
1. Setting `automerge: true` in the repo's `atlantis.yaml` file:
```yaml
version: 3
automerge: true
projects:
- dir: .
```
:::tip NOTE
If a repo has an `atlantis.yaml` file, then each project in the repo needs
to be configured under the `projects` key.
:::
## How to Disable
If automerge is enabled, you can disable it for a single `atlantis apply`
command with the `--auto-merge-disabled` option.
## How to set the merge method for automerge
If automerge is enabled, you can use the `--auto-merge-method` option
for the `atlantis apply` command to specify which merge method use.
```shell
atlantis apply --auto-merge-method <method>
```
The `method` must be one of:
- merge
- rebase
- squash
This is currently only implemented for the GitHub VCS.
## Requirements
### All Plans Must Succeed
When automerge is enabled, **all plans** in a pull request **must succeed** before
**any** plans can be applied.
For example, imagine this scenario:
1. I open a pull request that makes changes to two Terraform projects, in `dir1/`
and `dir2/`.
1. The plan for `dir2/` fails because my Terraform syntax is wrong.
In this scenario, I can't run
```shell
atlantis apply -d dir1
```
Even though that plan succeeded, because **all** plans must succeed for **any** plans
to be saved.
Once I fix the issue in `dir2`, I can push a new commit which will trigger an
autoplan. Then I will be able to apply both plans.
### All Plans must be applied
If multiple projects/dirs/workspaces are configured to be planned automatically,
then they should all be applied before Atlantis automatically merges the PR.
## Permissions
The Atlantis VCS user must have the ability to merge pull requests.