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4. See error

k logs 93afac63-apepg-gbumos-custo-postgresql-switchover-0-2lmnc
Defaulted container "switchover" out of: switchover, ops-utils (init)
curl http://172.16.0.14:3501/v1.0/switchover, parameters: {"parameters": {"primary":"apepg-gbumos-postgresql-1","candidate":""}}
curl result: {"errorCode":"ERR_PRECHECK_FAILED","message":"operation precheck failed: candidate is not set and has no other healthy members"}
INFO: start to check if switchover successfully, timeout is 60s
ERROR: switchover failed. 

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