replication connection failed

[shliar]

Hi

Replication to a mirror server does not work. Replication log says "connection failed".

replication.config has below entries
[remote "mirror"]
url = local_user@mirror:/data/gerrit/git/${name}.git
push = +refs/:refs/
threads = 3
replicationRetry = 120
timeout = 120
createMissingRepositories = true
replicateProjectDeletions = true

[2021-08-08 02:23:20,803] [0e3b0d72] Cannot replicate to local_user@mirror:/data/gerrit/git/junos/eventd.git
org.eclipse.jgit.errors.TransportException: local_user@mirror:/data/gerrit/git/junos/eventd.git: connection failed
at org.eclipse.jgit.transport.JschSession$JschProcess.(JschSession.java:153)
at org.eclipse.jgit.transport.JschSession$JschProcess.(JschSession.java:119)
at org.eclipse.jgit.transport.JschSession.exec(JschSession.java:92)
at org.eclipse.jgit.transport.TransportGitSsh$SshPushConnection.(TransportGitSsh.java:320)
at org.eclipse.jgit.transport.TransportGitSsh.openPush(TransportGitSsh.java:166)
at org.eclipse.jgit.transport.PushProcess.execute(PushProcess.java:154)
at org.eclipse.jgit.transport.Transport.push(Transport.java:1200)
at org.eclipse.jgit.transport.Transport.push(Transport.java:1246)
at com.googlesource.gerrit.plugins.replication.PushOne.pushVia(PushOne.java:403)
at com.googlesource.gerrit.plugins.replication.PushOne.runImpl(PushOne.java:375)
at com.googlesource.gerrit.plugins.replication.PushOne.runPushOperation(PushOne.java:288)
at com.googlesource.gerrit.plugins.replication.PushOne.access$000(PushOne.java:81)
at com.googlesource.gerrit.plugins.replication.PushOne$1.call(PushOne.java:258)
at com.googlesource.gerrit.plugins.replication.PushOne$1.call(PushOne.java:255)
at com.google.gerrit.server.util.RequestScopePropagator$5.call(RequestScopePropagator.java:222)
at com.google.gerrit.server.util.RequestScopePropagator$4.call(RequestScopePropagator.java:201)
at com.google.gerrit.server.git.PerThreadRequestScope$Propagator$1.call(PerThreadRequestScope.java:75)
at com.googlesource.gerrit.plugins.replication.PushOne.run(PushOne.java:255)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:377)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)