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Connecting to Services outside OKE Cluster On Oracle Cloud Infrastructure (OCI)

Mapping by hostname (CNAME)

Get the host name

Service definition

oracle-dev-svc.yml

kind: Service
apiVersion: v1
metadata:
  name: oracle-dev
spec:
  type: ExternalName
  externalName: devdb.sub07012047030.devvcn.oraclevcn.com

Execute

D:\practices\kubernetes\tbe>kubectl apply -f oracle-dev-svc.yml
service "oracle-dev" created

Use

<Environment name="dbcp.url" type="java.lang.String"
                  value="jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=oracle-dev)(PORT=1521))(CONNECT_DATA=(SERVER=DEDICATED)(SERVICE_NAME=PDB.sub07012047030.devvcn.oraclevcn.com)))"/>

Update the configmap

D:\practices\kubernetes\tbe>kubectl delete configmap qa-app-config
configmap "qa-app-config" deleted
 
D:\practices\kubernetes\tbe>kubectl create configmap qa-app-config --from-file=app.xml
configmap "qa-app-config" created

Mapping a hostname to an ip address

TODO

References

• Kubernetes Service Best practices
• Kubernetes Services