Hello there! We're seeing a specific problem on one of our Zookeeper clusters. When nodes come up, they try the leader election process, fail and then fall back to standalone mode. This is happening on all the nodes of this specific cluster which was perfectly functional until probably yesterday.
So here are the settings: ClientPort: 2181 ConnectPort:2888 ElectionPort:3888 We had a functioning quorum of 5 zookeeper nodes, all of which are now running in standalone mode. Just to be sure that there wasn't any firewall issue I used nc -l 3888 on one of the servers and tried connecting from the other and that just works fine. One problem that I see is when a Zookeeper cluster comes it only listens on port 3888 for a short duration. After which a telnet to port 3888 returns connection refused (nothing's running on port 3888 as confirmed by sudo netstat). Logs show a lot of java.net.SocketTimeoutException: connect timed out And all nodes seem to run in standalone mode Thanks in advance for replying Regards Avinash
