Hi Daniel, Thanks for the quick reply. We use static IP addresses on all of the servers so it did not change after the reboot.
Thanks, -Ian From: Daniel Chan <[email protected]> on behalf of Daniel Chan <[email protected]> Reply-To: "[email protected]" <[email protected]> Date: Thursday, January 24, 2019 at 16:36 To: "[email protected]" <[email protected]> Subject: [**SPAM**] RE: ZK Server does not join quorum after restart If its IP address got changed, then you hit a known bug https://issues.apache.org/jira/browse/ZOOKEEPER-1506 and you need to bounce the cluster. Thanks, Daniel -----Original Message----- From: Ian Spence <[email protected]<mailto:[email protected]>> Sent: Thursday, January 24, 2019 2:36 PM To: [email protected]<mailto:[email protected]> Subject: ZK Server does not join quorum after restart Hello We have a cluster of 5 ZK servers, all running ZK 3.4.6 on Java 1.8 on CentOS 6. These are physical devices, not virtual machines. One server required hardware maintenance, and was restarted. When the zk software was restarted, it did not rejoin the quorum as a follower. Running “stat” or “mntr” commands returns: “This ZooKeeper instance is not currently serving requests” I googled this message and came across this bug: https://urldefense.proofpoint.com/v2/url?u=https-3A__issues.apache.org_jira_browse_ZOOKEEPER-2D2164&d=DwIGaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=JE3yjNS4hXa8nS9n2uFCwEqMvv18hzzEnqunUhCoEns&m=S_8TazqwUbEfRtAYQCn8kA7F2tiGUBaVr3c_nj0Fh8A&s=FGIs9YOjwdYrzBH8om70Jx11KemHKRDsMY_kZK6cpK0&e= Does anybody know if there is a work-around to this issue? We’ve seen this problem multiple times in the past and our current solution is to bring down the zk cluster (which is a huge outage-causing pain). Thanks - Ian
