Resolving the certificate error issue in NetBackup operator pod logs

Following error is displayed in NetBackup operator pod logs when the primary server certificate is changed:

ERROR controller-runtime.manager.controller.environment
Error defining desired resource {"reconciler group": "netbackup.veritas.com", 
"reconciler kind": "Environment", "name": "test-delete", "namespace": "netbackup-environment", 
"Type": "MSDPScaleout", "Resource": "dedupe1", "error": "Unable to get primary host UUID: 
Get \"https://nbux-xx-xxx-xx-xx.vxindia.cohesity.com:1556/netbackup/config/hosts\": 
x509: certificate signed by unknown authority (possibly because of \"crypto/rsa: 
verification error\" while trying to verify candidate authority certificate \"nbatd\")"}

To resolve this issue, restart the NetBackup operator by deleting the NetBackup operator pod using the following command:

kubectl delete <Netbackup-operator-pod-name> -n <namespace>