126 lines
5.3 KiB
Markdown
126 lines
5.3 KiB
Markdown
---
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stage: Configure
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group: Configure
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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type: index, concepts, howto
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---
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# GitLab ChatOps **(FREE)**
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> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/4466) in GitLab Ultimate 10.6.
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> - [Moved](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/24780) to GitLab Free in 11.9.
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> - `CHAT_USER_ID` was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/341798) in GitLab 14.4.
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GitLab ChatOps provides a method to interact with CI/CD jobs through chat services
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like Slack. Many organizations' discussion, collaboration, and troubleshooting takes
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place in chat services. Having a method to run CI/CD jobs with output
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posted back to the channel can significantly augment your team's workflow.
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## How GitLab ChatOps works
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GitLab ChatOps is built upon [GitLab CI/CD](../index.md) and
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[Slack Slash Commands](../../user/project/integrations/slack_slash_commands.md).
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ChatOps provides a `run` action for [slash commands](../../integration/slash_commands.md)
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with the following arguments:
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- A `<job name>` to execute.
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- The `<job arguments>`.
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ChatOps passes the following [CI/CD variables](../variables/index.md#predefined-cicd-variables)
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to the job:
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- `CHAT_INPUT` contains any additional arguments.
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- `CHAT_CHANNEL` is set to the name of channel the action was triggered in.
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- `CHAT_USER_ID` is set to the chat service's user ID of the user who triggered the slash command.
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When executed, ChatOps looks up the specified job name and attempts to match it
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to a corresponding job in [`.gitlab-ci.yml`](../yaml/index.md). If a matching job
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is found on the default branch, a pipeline containing only that job is scheduled. After the
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job completes:
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- If the job completes in *less than 30 minutes*, the ChatOps sends the job's output to Slack.
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- If the job completes in *more than 30 minutes*, the job must use the
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[Slack API](https://api.slack.com/) to send data to the channel.
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To use the `run` command, you must have at least the
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Developer role.
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If a job shouldn't be able to be triggered from chat, you can set the job to `except: [chat]`.
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## Best practices for ChatOps CI jobs
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Since ChatOps is built upon GitLab CI/CD, the job has all the same features and
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functions available. Consider these best practices when creating ChatOps jobs:
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- GitLab strongly recommends you set [`rules`](../yaml/index.md#rules) so the job does not run as part
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of the standard CI pipeline.
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- If the job is set to `when: manual`, ChatOps creates the pipeline, but the job waits to be started.
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- ChatOps provides limited support for access control. If the user triggering the
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slash command has at least the Developer role
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in the project, the job runs. The job itself can use existing
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[CI/CD variables](../variables/index.md#predefined-cicd-variables) like
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`GITLAB_USER_ID` to perform additional rights validation, but
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these variables can be [overridden](../variables/index.md#cicd-variable-precedence).
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### Controlling the ChatOps reply
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The output for jobs with a single command is sent to the channel as a reply. For
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example, the chat reply of the following job is `Hello World` in the channel:
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```yaml
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stages:
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- chatops
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hello-world:
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stage: chatops
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rules:
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- if: $CI_PIPELINE_SOURCE == "chat"
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script:
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- echo "Hello World"
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```
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Jobs that contain multiple commands (or `before_script`) return additional
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content in the chat reply. In these cases, both the commands and their output are
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included, with the commands wrapped in ANSI color codes.
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To selectively reply with the output of one command, its output must be bounded by
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the `chat_reply` section. For example, the following job lists the files in the
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current directory:
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```yaml
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stages:
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- chatops
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ls:
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stage: chatops
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rules:
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- if: $CI_PIPELINE_SOURCE == "chat"
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script:
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- echo "This command will not be shown."
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- echo -e "section_start:$( date +%s ):chat_reply\r\033[0K\n$( ls -la )\nsection_end:$( date +%s ):chat_reply\r\033[0K"
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```
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## GitLab ChatOps examples
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The GitLab.com team created a repository of [common ChatOps scripts](https://gitlab.com/gitlab-com/chatops)
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they use to interact with our Production instance of GitLab. Administrators of
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other GitLab instances may find them useful. They can serve as inspiration for ChatOps
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scripts you can write to interact with your own applications.
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## GitLab ChatOps icon
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The [official GitLab ChatOps icon](img/gitlab-chatops-icon.png) is available for download.
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You can find and download the official GitLab ChatOps icon here.
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<!-- ## Troubleshooting
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Include any troubleshooting steps that you can foresee. If you know beforehand what issues
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one might have when setting this up, or when something is changed, or on upgrading, it's
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important to describe those, too. Think of things that may go wrong and include them here.
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This is important to minimize requests for support, and to avoid doc comments with
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questions that you know someone might ask.
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Each scenario can be a third-level heading, e.g. `### Getting error message X`.
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If you have none to add when creating a doc, leave this section in place
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but commented out to help encourage others to add to it in the future. -->
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