Confirmed on branch-3.5 too. Thanks Enrico & Tison for the quick help. I'll close the ticket with the explanation.
Andor On Wed, 2023-06-07 at 10:03 +0800, tison wrote: > Confirm with master. > > With JMXDISABLE=1 bin/zkServer.sh start-foreground the extra port > doesn't > occur. So it should follow Enrico's analysis. > > Best, > tison. > > > Enrico Olivelli <eolive...@gmail.com> 于2023年6月6日周二 22:39写道： > > > Andor > > > > "Log4j 1.2 jmx support not found; jmx disabled." > > > > This means that "log4j" JMX support is disabled. > > > > You wrote in the very first line of your logs > > "$ bin/zkServer.sh start-foreground > > ZooKeeper JMX enabled by default" > > > > > > Enrico > > > > Il giorno mar 6 giu 2023 alle ore 16:00 Andor Molnar > > <an...@apache.org> ha scritto: > > > Looks like we already have a ticket about it: > > > > > > https://issues.apache.org/jira/browse/ZOOKEEPER-2910 > > > > > > Sure, I'll try to repro on master in a minute. > > > > > > > > > > > > On Tue, 2023-06-06 at 21:24 +0800, tison wrote: > > > > Can you reproduce this on master? Or only happen on 3.4 and > > > > 3.5? > > > > > > > > Best, > > > > tison. > > > > > > > > > > > > Andor Molnar <an...@apache.org> 于2023年6月6日周二 21:16写道： > > > > > > > > > JMX is disabled by ManagedUtil: > > > > > > > > > > 2023-06-06 14:56:48,384 [myid:] - INFO [main:ManagedUtil@47] > > > > > - > > > > > Log4j > > > > > 1.2 jmx support not found; jmx disabled. > > > > > > > > > > Hence I don't see the 9010 tcp port bound. But why would a > > > > > random > > > > > ephemeral port still open? > > > > > > > > > > Important that this port is random and keeps changing at > > > > > every > > > > > startup. > > > > > > > > > > Andor > > > > > > > > > > > > > > > > > > > > On Tue, 2023-06-06 at 15:08 +0200, Enrico Olivelli wrote: > > > > > > Andor, > > > > > > > > > > > > Il giorno mar 6 giu 2023 alle ore 14:59 Andor Molnar > > > > > > <an...@apache.org> ha scritto: > > > > > > > Hi folks, > > > > > > > > > > > > > > I cannot find an answer for this which annoys the hell > > > > > > > out of > > > > > > > me. > > > > > > > Please help to understand why ZooKeeper is binding a > > > > > > > local > > > > > > > ephemeral > > > > > > > port right after start without any quorum or client > > > > > > > socket > > > > > > > opened. > > > > > > > This > > > > > > > is what I see when start a 3.4 or 3.5 server is > > > > > > > standalone > > > > > > > mode. > > > > > > > (Same > > > > > > > behaviour is observed with quorum too) > > > > > > > > > > > > > > $ bin/zkServer.sh start-foreground > > > > > > > ZooKeeper JMX enabled by default > > > > > > > Using config: /home/andor/git/my- > > > > > > > zookeeper/bin/../conf/zoo.cfg > > > > > > > 2023-06-06 14:56:48,378 [myid:] - INFO [main: > > > > > > > QuorumPeerConfig@154] > > > > > > > - > > > > > > > Reading configuration from: /home/andor/git/my- > > > > > > > zookeeper/bin/../conf/zoo.cfg > > > > > > > ... > > > > > > > 2023-06-06 14:56:48,648 [myid:] - INFO [main: > > > > > > > NIOServerCnxnFactory@689] > > > > > > > - binding to port 0.0.0.0/0.0.0.0:2181 > > > > > > > > > > > > > > ZooKeeper is running with PID 57126. Admin server is > > > > > > > disabled. > > > > > > > > > > > > > > $ sudo netstat -plnt | grep 57126 > > > > > > > tcp6 0 0 > > > > > > > :::2181 :::* LISTEN > > > > > > > 571 > > > > > > > 26/j > > > > > > > ava > > > > > > > tcp6 0 0 > > > > > > > :::45669 :::* LISTEN > > > > > > > 571 > > > > > > > 26/j > > > > > > > ava > > > > > > > > > > > > > > What is the second line?? > > > > > > > > > > > > It should be JMX > > > > > > > > > > > > Enrico > > > > > > > > > > > > > Thanks, > > > > > > > Andor > > > > > > > > > > > > > > > > > > > > >
