A deployment that's considered successful right after the symlink switch hasn't actually concluded on a functional level. Post-deploy checks make the difference between a pipeline that ends technically and a pipeline that confirms the application actually works.
Cache speeds up builds by reusing download results. Artifacts carry built results between jobs. Anyone who confuses the two ends up fighting inconsistent builds, needlessly long pipeline runtimes, and Magento deployment artifacts that are hard to reproduce.
The symlink switch is only the beginning. Search index reindex, queue consumer restart and cache warmup are the three hidden waiting periods after every Magento deployment, and they need to be coordinated within the pipeline.
A single web server is rarely the reality in Magento production systems. When web servers, worker processes, cron jobs and queue consumers are spread across separate hosts, the GitLab pipeline has to coordinate that complexity, without race conditions, orphaned processes or partial deployments.
env.php does not belong in the repository, and it does not belong in the build artifact. Ignore that rule and you end up with a release model that breaks at the first environment switch. This article explains how app/etc, shared directories, and config.php correctly work together in the symlink release model with GitLab CI/CD.
Three roads, one destination: getting Magento onto the server safely. Shell scripts are simple but hard to maintain. Deployer PHP understands release structures and rollback out of the box. Ansible is powerful, but overkill for many teams. Which approach fits when, and what does that look like in a GitLab pipeline?
Anyone working with GitLab CI/CD in a larger team knows the phenomenon: jobs sit in the queue even though the pipeline was triggered long ago. The cause is almost always concurrent limits set too low, missing runner tags, or unbalanced load distribution between build, test and deploy jobs.
Every Magento deployment handles sensitive data: SSH keys, database passwords, Composer auth tokens, Redis connections, and API keys. The question of where these secrets are stored determines how exposed a deployment process is in the event of an incident. GitLab CI/CD variables are a practical starting point, but they are not the best choice for every secret.
A self-hosted GitLab Runner gives teams full control over the build environment, security, and access paths. This article explains installation on Linux, registration with the Docker executor, tags, security settings, and Magento-specific configuration, step by step and in full.
Anyone who stores Composer credentials in the repository risks compromise at every offboarding. Anyone who does not manage them at all ends up fighting broken builds. This article shows how to store auth.json, private repository tokens and Packagist mirror configurations securely as GitLab variables and consume them correctly in pipelines.