Financial services · On-prem air-gapped network
Helm and GitOps for a Production App on Air-Gapped OpenShift
Packaged an application already running in production as a Helm chart and moved it to Argo CD GitOps on an air-gapped OpenShift cluster, without disrupting production.
Financial services enterprise (name withheld). Delivery experience of the Ramatech team; the client name is withheld under confidentiality.
Challenge
A production application on an air-gapped OpenShift cluster was deployed with hand-maintained YAML and oc commands. Every production change was manual and risky, and configuration differed between environments.
What we did
Created a Helm chart for the application from its running configuration, with per-environment values kept in GitLab. Set up Argo CD to sync the chart to the cluster, with Jenkins in the delivery path and container images served from a mirror registry inside the air-gapped network. The application moved to the new model while production kept running.
Results
Helm + GitOps
Production app moved without disrupting production
Consistent
Same configuration model across environments
Traceable
Every production change recorded in Git, with simpler rollback
Stack
- OpenShift
- Air-gapped
- Helm
- Argo CD
- GitLab
- Jenkins
- Mirror registry
Related services
Planning similar work?
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