GitLab CI Articles

Write Multi-Line Scripts in GitLab CI YAML Correctly

GitLab CI's script keyword can handle multiple lines of shell commands, but how you format them determines whether they run sequentially as expected or .

3 min read

Run Service Containers Alongside GitLab CI Jobs

This feature lets you spin up arbitrary Docker containers that your GitLab CI jobs can then talk to, as if they were part of the same network.

3 min read

Send GitLab CI Pipeline Results to Slack

GitLab CI pipeline results can be sent to Slack, but the most surprising thing is how much control you have over what gets sent and when, often without .

2 min read

Run SonarQube Checks in GitLab CI Pipelines

Run SonarQube Checks in GitLab CI Pipelines — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world examples.

2 min read

Run terraform plan and apply Safely from GitLab CI

GitLab CI can run Terraform plan and apply safely by using a CI/CD variable to store Terraform state and leveraging GitLab's built-in environment and de.

2 min read

Display JUnit Test Results in GitLab Merge Requests

GitLab merge requests can display JUnit test results directly within the UI, transforming raw XML output into actionable feedback.

2 min read

Scope GitLab CI Variables at Group and Project Level

GitLab CI/CD variables aren't just global settings; you can precisely control their availability across your projects and groups, which is way more powe.

3 min read

Control When GitLab CI Pipelines Run with workflow:rules

GitLab CI's workflow:rules lets you define pipeline execution logic more granularly than ever before, but its real power lies in its ability to prevent .

3 min read

Fix GitLab CI Runner Token Expired Errors

The GitLab CI runner failed because its authentication token expired, meaning the runner can no longer prove its identity to the GitLab server.

4 min read

Fix GitLab CI Healthcheck Failures in Deployment Jobs

The healthcheck step in your GitLab CI deployment job is failing because the target service isn't responding to health probes within the configured time.

3 min read

Fix GitLab CI Insufficient Permissions to Merge Errors

Your GitLab CI pipeline is failing because the user or bot running the pipeline doesn't have the necessary permissions to merge code into the target bra.

5 min read

Fix GitLab CI Jobs Timing Out During Execution

Your GitLab CI jobs are timing out because the runner, which is the agent executing your jobs, is giving up on the GitLab CI coordinator after a predefi.

4 min read

Fix GitLab CI Kubernetes Cluster Not Reachable Errors

The Kubernetes API server is refusing connections from the GitLab CI Kubernetes integration, indicating a network or authentication problem between GitL.

3 min read

Fix GitLab CI License Compliance Check Failures

The core issue is that your GitLab CI pipeline is failing because the license compliance check, specifically the licensefinder tool, can't verify the li.

4 min read

Fix GitLab CI Merge Request Pipeline Failures

The GitLab CI runner on your shared runner lost its connection to the GitLab API, preventing it from reporting job status or retrieving new job instruct.

4 min read

Fix GitLab CI "No Matching Runner Found" Job Queuing

Fix GitLab CI "No Matching Runner Found" Job Queuing — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world exam...

4 min read

Fix GitLab CI "No Runners Available" Errors

This error means your GitLab CI jobs can't find any machines to run on because all available runners are either busy, not configured correctly, or don't.

3 min read

Fix GitLab CI Protected Branch Push Permission Failures

The GitLab CI runner is failing to push to a protected branch because the CIJOBTOKEN it's using lacks the necessary permissions.

4 min read

Fix GitLab CI Container Registry Push Failures

GitLab CI is failing to push images to the container registry because the Docker daemon on the CI runner is rejecting the authentication token.

4 min read

Fix GitLab CI Runner Job Prerequisites Not Met Errors

The GitLab CI runner failed because it couldn't fulfill a prerequisite for the job, most commonly due to a missing or misconfigured Docker image.

3 min read

Fix GitLab CI Runner System Failures

The GitLab CI Runner system failed because the gitlab-runner service, which is responsible for picking up and executing CI jobs, could not connect to th.

4 min read

Fix GitLab CI Secret Detection Job Failures

The secretdetection job is failing because it cannot find any secrets to scan, not because there's an issue with the scanner itself.

4 min read

Fix GitLab CI Artifact Too Large Errors

Fix GitLab CI Artifact Too Large Errors — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world examples.

3 min read

Fix GitLab CI Artifacts Not Found After Job Completion

The GitLab CI runner is failing to upload artifacts because the artifacts. reports path is being interpreted as a file instead of a directory

4 min read

Fix GitLab CI Cache Extraction Failures

The GitLab CI job failed because the runner couldn't extract the cached artifacts, indicating a problem with either the cache's integrity, the runner's .

3 min read

Debug GitLab CI Child Pipeline Failures

A GitLab CI child pipeline failing isn't about the child pipeline itself throwing a tantrum; it's usually the parent pipeline's needs or trigger job fai.

4 min read

Fix GitLab CI Container Scanning Job Failures

The GitLab CI Container Scanning job is failing because the Trivy scanner, which is responsible for analyzing your container images, is encountering an .

4 min read

Fix GitLab CI Jobs Failing Because Environment Is Stopping

Fix GitLab CI Jobs Failing Because Environment Is Stopping — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-worl...

7 min read

Fix GitLab CI Coverage Check Failures

The GitLab CI coverage check is failing because the CI job isn't producing a valid coverage report in the format GitLab expects.

4 min read

Fix GitLab CI Dependency Scanning Failures

Dependency Scanning failed because the GitLab Runner could not reach the GitLab instance to download dependencies or upload results.

3 min read

Debug and Fix GitLab CI Deployment Job Failures

A GitLab CI deployment job failed because the runner process that was supposed to execute the deployment commands crashed due to a resource exhaustion e.

4 min read

Fix GitLab CI Downstream Pipeline Trigger Failures

The GitLab CI pipeline trigger mechanism is failing because the upstream pipeline cannot establish a secure connection to the downstream project's API.

3 min read

Fix GitLab CI "Environment Already Exists" Conflicts

The kubectl command kubectl apply is failing because the Kubernetes API server is reporting that an environment already exists with the same name that y.

5 min read

Fix GitLab CI Git Submodule Checkout Failures

The CI job failed because the GitLab Runner couldn't properly check out your Git submodules. This is usually because the runner's environment is missing.

4 min read

Update ArgoCD Image Tags Automatically from GitLab CI

Argo CD can update your Kubernetes deployments with new container images, but getting the image tags into Argo CD automatically from your GitLab CI pipe.

4 min read

Configure GitLab CI Artifact Expiration Policies

Configure GitLab CI Artifact Expiration Policies — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world examples.

2 min read

Use GitLab Auto DevOps to Build and Deploy Without YAML

Use GitLab Auto DevOps to Build and Deploy Without YAML — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world e...

2 min read

Cache Build Dependencies in GitLab CI for Faster Pipelines

Cache Build Dependencies in GitLab CI for Faster Pipelines — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-worl...

2 min read

Track and Report Code Coverage in GitLab CI Pipelines

GitLab CI's code coverage reporting is surprisingly powerful, but it doesn't actually run your tests or calculate coverage itself; it just parses the ou.

2 min read

Push Container Images to GitLab Container Registry in CI

Push Container Images to GitLab Container Registry in CI — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world ...

3 min read

Scan Container Images for CVEs in GitLab CI

GitLab CI's container scanning feature can detect Common Vulnerabilities and Exposures CVEs in your container images, but it's not magic.

3 min read

Enable GitLab CI Debug Trace to Diagnose Pipeline Failures

The most surprising thing about GitLab CI debug traces is that they're not just for debugging; they're a fundamental tool for understanding the intent o.

3 min read

Detect Vulnerable Dependencies in GitLab CI

GitLab CI's dependency scanning is a lot more powerful than most people realize, and it's not just about finding any vulnerability, but specifically tho.

2 min read

Run Docker in Docker Builds in GitLab CI Pipelines

GitLab CI's docker:dind service is a powerful tool for building Docker images within your CI/CD pipelines, but it's also a common source of confusion an.

2 min read

Build and Push Docker Images in GitLab CI Pipelines

GitLab CI doesn't actually build your Docker images; it orchestrates the process using external tools like Docker itself.

2 min read

Deploy to Environments and Track Releases in GitLab CI

GitLab CI isn't just about building and testing; it's a full-fledged deployment engine that lets you push code to different environments and track every.

3 min read

Reuse Job Templates with extends and Hidden Jobs in GitLab CI

Reuse Job Templates with extends and Hidden Jobs in GitLab CI. GitLab CI's extends keyword is a powerful tool for reducing duplication in your. gitlab-ci

2 min read

Deploy Helm Charts to Kubernetes from GitLab CI

GitLab CI can deploy Helm charts to Kubernetes by leveraging its CI/CD features to automate the process of building, packaging, and releasing your appli.

2 min read

Share CI Logic Across Projects with GitLab CI include and Templates

GitLab CI's include keyword lets you avoid repeating yourself by referencing external YAML files, effectively creating reusable CI logic.

2 min read

Deploy to Kubernetes from GitLab CI with kubectl and Helm

GitLab CI can deploy to Kubernetes using kubectl and Helm, but the most surprising thing is how often the CI job fails not because of Kubernetes or Helm.

5 min read

Check Open Source License Compliance in GitLab CI Pipelines

GitLab CI can scan your code for open-source license compliance, but it's not a magic bullet; it's a tool that requires careful configuration and unders.

3 min read

Require Manual Approval Before Deploying in GitLab CI

GitLab CI's manual approval step isn't just a "pause" button; it's a critical fork in your pipeline's execution, allowing human judgment to intervene be.

2 min read

Use Masked and Protected Variables in GitLab CI Securely

GitLab CI variables are a powerful way to inject configuration and secrets into your pipelines, but using them insecurely can expose sensitive informati.

4 min read

Run Pipelines Only for Merge Requests in GitLab CI

GitLab CI pipelines can be configured to run exclusively for merge requests, which is surprisingly simple once you know where to look.

2 min read

Trigger Only Relevant GitLab CI Jobs in a Monorepo

Trigger Only Relevant GitLab CI Jobs in a Monorepo — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world examples.

3 min read

Trigger Downstream Pipelines in Other GitLab Projects

GitLab's CI/CD can trigger other pipelines, but it's not about just calling a function; it's about a complex dance of security tokens and event propagat.

3 min read

Speed Up GitLab CI Pipelines with DAG and needs

GitLab's CI/CD pipelines are powerful, but they can become a bottleneck if not optimized. The needs keyword and Directed Acyclic Graphs DAG are your sec.

4 min read

Authenticate GitLab CI to AWS and GCP with OIDC

GitLab CI can authenticate to AWS and GCP using OpenID Connect OIDC without ever needing to store long-lived AWS/GCP credentials in GitLab.

5 min read

Run Matrix and Parallel Jobs in GitLab CI

GitLab CI's matrix and parallel jobs feature lets you run a single job definition across multiple configurations simultaneously, drastically cutting dow.

2 min read

Split Complex GitLab CI Pipelines with Parent-Child Structure

GitLab CI's parent-child pipeline feature lets you break down monolithic pipelines into smaller, manageable, and reusable components.

3 min read

Speed Up GitLab CI Pipelines in Large Repositories

GitLab CI pipelines in large repositories often become a bottleneck, not because of the jobs themselves, but because the Git fetch operation at the star.

3 min read

Fix GitLab CI Pipelines Stuck in Pending or Running State

GitLab CI runners are failing to pick up jobs, leaving pipelines stuck in a pending or running state because the GitLab instance can't find an available.

4 min read

GitLab CI YAML Pipeline Syntax: Complete Reference

GitLab CI YAML pipelines are declarative definitions of your continuous integration and deployment process, but their syntax can feel like a labyrinth o.

3 min read

Protect Branches and Scope Secrets in GitLab CI

GitLab CI's branch protection and secret scoping are fundamental to preventing accidental deployments to sensitive environments and ensuring that secret.

3 min read

Build and Publish Releases from Git Tags in GitLab CI

GitLab CI can automatically build and publish releases from Git tags, transforming your tagging workflow into a streamlined release process.

2 min read

Build Reusable GitLab CI Pipeline Components

GitLab CI/CD components let you define reusable pipeline steps, jobs, or entire workflows that can be shared across projects, saving you from duplicatin.

3 min read

Deploy Preview Environments with GitLab CI Review Apps

GitLab's Review Apps are a game-changer for collaborative development, allowing you to spin up ephemeral, production-like environments for every merge r.

3 min read

GitLab CI rules vs only/except: Migrate and Choose Correctly

GitLab CI's rules keyword is a superset of the older only and except keywords, offering more granular control over job execution.

2 min read

Configure GitLab CI Runner with Docker Executor

GitLab CI's Docker executor lets your jobs run in isolated containers, but setting it up is less about installing software and more about orchestrating .

3 min read

Configure GitLab CI Runner with Kubernetes Executor

GitLab CI Runners, when configured with the Kubernetes executor, can dynamically provision pods on your Kubernetes cluster to run your CI/CD jobs.

3 min read

Register GitLab CI Runners Step by Step

Registering a GitLab CI runner is more than just an installation; it's about making a specific machine available to execute your Continuous Integration .

3 min read

Configure GitLab CI Runner with Shell Executor

The GitLab CI Runner with Shell Executor lets your CI jobs run directly on the machine where the runner is installed, using the shell environment of the.

4 min read

Run SAST Security Scanning in GitLab CI Pipelines

GitLab's Static Application Security Testing SAST feature is designed to scan your source code for security vulnerabilities before you deploy, a concept.

3 min read

Trigger GitLab CI Pipelines on a Cron Schedule

Trigger GitLab CI Pipelines on a Cron Schedule — practical guide covering gitlab-ci setup, configuration, and troubleshooting with real-world examples.

3 min read