EMR uses upstart to manage all daemons/services running on the cluster, so the best way to restart Zeppelin on EMR is to use "sudo stop zeppelin; sudo start zeppelin". (Note: normally you'd use "sudo restart", but this doesn't actually work due to the way that upstart is configured for all of these processes on EMR.)
~ Jonathan On Wed, Jul 19, 2017 at 4:11 PM Steven Kirtzic < steven.kirtzic.f...@statefarm.com> wrote: > Hey Moon, > > > > Can you remove me from this mailing list? Thanks, > > > > -Steven > > > > *From: *moon soo Lee <m...@apache.org> > *Reply-To: *"users@zeppelin.apache.org" <users@zeppelin.apache.org> > *Date: *Wednesday, July 19, 2017 at 5:39 PM > *To: *"users@zeppelin.apache.org" <users@zeppelin.apache.org> > *Subject: *Re: restarting zeppelin on EMR causing exceptions > > > > Hi, > > > > Can you try restart Zeppelin with 'zeppelin' user permission? > > > > sudo -u zeppelin /usr/lib/zeppelin/bin/zeppelin-daemon.sh restart > > > > Thanks, > moon > > > > On Wed, Jul 19, 2017 at 3:21 PM Richard Xin <richardxin...@yahoo.com> > wrote: > > I was doing config changes on EMR (EMR Release label:emr-5.7.0) Zeppelin > (Zeppelin 0.7.2) and struggled with Zeppelin server restart, finally I was > able to narrow down to the steps to reproduce below (it's reproducible for > any newly created EMR if following the steps below): > 1) provision a EMR cluster (1 master node + 2 core nodes) with Spark, > Hadoop, hive and Zeppelin > 2) ssh to the master node > 3) curl http://ec2-34-209-164-132.us-west-2.compute.amazonaws.com:8890/#/ > 4) sudo /usr/lib/zeppelin/bin/zeppelin-daemon.sh restart > 5) do #3 again > you will see errors: > <h2>HTTP ERROR: 503</h2> > <p>Problem accessing /. Reason: > <pre> Service Unavailable</pre></p> > > 6) tail Zeppelin log under /var/log/zeppelin/ > you will see following errors: > WARN [2017-07-19 21:34:57,425] ({main} > AbstractLifeCycle.java[setFailed]:212) - FAILED > org.eclipse.jetty.server.Server@4ed38226: java.net.BindException: Address > already in use > java.net.BindException: Address already in use > at sun.nio.ch.Net.bind0(Native Method) > at sun.nio.ch.Net.bind(Net.java:433) > at sun.nio.ch.Net.bind(Net.java:425) > at > sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) > at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) > at > org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:321) > at > org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNetworkConnector.java:80) > at > org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java:236) > at > org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) > at org.eclipse.jetty.server.Server.doStart(Server.java:366) > at > org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68) > at > org.apache.zeppelin.server.ZeppelinServer.main(ZeppelinServer.java:189) > >
