Background
- Jenkins infrastructure was running on a legacy VM setup
- Manual updates, plugin and job management
- Limited observability and slow disaster recovery
- Increasing maintenance burden
Goals
- Infrastructure-as-code for Jenkins
- Isolate build jobs via agents
- Centralize logging and monitoring
- Easy backup and restore
- Standardize plugins and security
Solution
- Dockerized Jenkins master image with pinned plugin versions
- Helm chart to deploy Jenkins to Kubernetes
- Kubernetes pod templates for dynamic build agents
- PVCs for build artifacts and backup
- Config-as-code with
JCasC (Jenkins Configuration as Code)
- Prometheus / Grafana / AlertManager
Challenges
- Stateful data management
- Plugin compatibility
- Migration of existing jobs
- Team adoption
Outcomes
- Reduced maintenance hours
- Recovery time from failure dropped from hours to minutes
- Onboarded new teams with standardized templates
- Easier auditing and compliance with config-as-code