Apart from adjusting the resource configuration, the procedure remains identical to what's outlined in 《3. Update》.

kubectl patch --type='merge' pxc polardbx-test -p '{"spec": {"topology": {"nodes": {"cn": {"template": {"resources": {"limits": {"cpu": 4, "memory": "16Gi"}}}}}}}}'

Similarly, you'll notice the PHASE transitioning from Running to Upgrading and subsequently returning to Running.