Appendix B. Updating the deployment configuration of an example application

Procedure

1. Edit an existing YAML file or create an additional YAML file with your configuration update.

   • For example, if your example already has a YAML file with a readinessProbe configured, you could change the path value to a different available path to check for readiness:

     spec:
       template:
         spec:
           containers:
             readinessProbe:
               httpGet:
                 path: /path/to/probe
                 port: 8080
                 scheme: HTTP
     ...

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   • If a readinessProbe is not configured in an existing YAML file, you can also create a new YAML file in the same directory with the readinessProbe configuration.
2. Deploy the updated version of your example using Maven or npm.

3. Verify that your configuration updates show in the deployed version of your example.

   $ oc export all --as-template='my-template'
   
   apiVersion: template.openshift.io/v1
   kind: Template
   metadata:
     creationTimestamp: null
     name: my-template
   objects:
   - apiVersion: template.openshift.io/v1
     kind: DeploymentConfig
     ...
     spec:
       ...
       template:
         ...
         spec:
           containers:
             ...
             livenessProbe:
               failureThreshold: 3
               httpGet:
                 path: /path/to/different/probe
                 port: 8080
                 scheme: HTTP
               initialDelaySeconds: 60
               periodSeconds: 30
               successThreshold: 1
               timeoutSeconds: 1
             ...

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