Flink upgrade (non-cross version)

1. Download the mirror of the new version

   Operations are required on each node server in a kubernetes cluster.

   Internet Access Available

   crictl pull nocoly/flink:<version>

   Internet Access Unavailable

   # Download link for flink offline mirror file. After downloading, upload it to the deployment server.
   https://pdpublic.nocoly.com/offline/flink-linux-amd64-<version>.tar.gz

   Load the offline mirror on the server.

   gunzip -d flink-linux-amd64-<version>.tar.gz
   ctr -n k8s.io image import flink-linux-amd64-<version>.tar

2. Modify the configuration file

   Modify the version of the mirrors used by the flink-jobmanager and flink-taskmanager services in flink. yaml.

   - name: jobmanager
     image: nocoly/flink:<version>
   - name: taskmanager
     image: nocoly/flink:<version>

3. Restart service

   kubectl apply -f flink.yaml