Misconfigurations in CI/CD pipelines can cause failed deployments in Kubernetes. Common issues include incorrect manifests, such as typos in YAML files, wrong API versions, and mis-indenting. Tools like yamllint and kubeval are essential for linting YAML to catch errors early. Validating YAML files and storing them in version control helps prevent deployment mistakes. These practices allow Jenkins to identify configuration errors quickly and avoid rolling out malfunctioning pods, ensuring better reliability in deployment processes.
One of the most frequent causes of failed deployments is an incorrect Kubernetes manifest. A typo in the YAML or a wrong API version can mean kubectl apply never succeeds or creates broken resources.
YAML linting is a must. Use tools like yamllint or kubeval in your pipeline to catch these issues before deployment. For instance, kubectl apply -dry-run=client can quickly flag an invalid manifest.
By validating every YAML file (via editors or CI steps), you prevent subtle mistakes. Storing manifests in Git under version control is another key practice.
With manifest versioning and linting, Jenkins can fail fast on bad configs rather than rolling out half-broken pods.
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