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) >
