ETCD pod is restarting frequently.

Issue

• The liveness probe for the master-etcd pod failed.

rafthttp: the clock difference against peer XXXX is too high [1.46664075s > 1s]
rafthttp: the clock difference against peer XXXX is too high [3.281962067s > 1s]

Liveness probe for master-etcd-master.example.com(XXXX):etcd failed (failure): member XXXX is unhealthy: got unhealthy result from https://ip-address:2379

member XXXX is unhealthy: got unhealthy result from https://ip-address:2379
member XXXX is unhealthy: got unhealthy result from https://ip-address:2379

• I/O timeouts errors for the etcd members.