How to get started with Parent-child pipelines

The complexity of managing a .gitlab-ci.yml file in large, monorepo-style repositories can pose challenges, such as merge conflicts and productivity slowdowns when multiple teams work on interconnected services. GitLab addresses these issues by introducing Parent-child pipelines and dynamic pipeline configuration features in version 12.7. Parent-child pipelines allow separate components to run concurrently, improving performance and compartmentalizing configurations into different files and views. A parent pipeline can trigger child pipelines using the trigger key, with configurations specified in separate YAML files. These child pipelines can be activated based on conditions, such as changes in specific folders. Furthermore, GitLab enables the dynamic generation of pipeline configuration files, which keeps repositories organized and reduces clutter. This is achieved by running scripts within the parent pipeline to create and use configuration files as artifacts. These enhancements provide developers with greater flexibility and efficiency when building CI/CD workflows, facilitating the management of complex projects within a single repository.

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