can't load the Zeppelin web UI

Question

HI All,I have deployed zeppelin in my Ubuntu instance (My private IP: 20.20.20.213) using the tgz file. I have changed the zeppelin-en.sh.template to zeppelin-en.sh and zeppelin-site.xml.template to zeppelin-site.xml. Also, I have configured my port in the site-xml file as 8090 and the server addrs as 0.0.0.0 default only. On checking the log file i get the following code:I even tried to change the server addrs to 20.20.30.213 but still the same error I am getting. Please help!ubuntu@ip-20-20-30-213:~/zeppelin/logs$ cat zeppelin-root-ip-20-20-30-213.log INFO [2019-06-12 17:24:41,675] ({main} ZeppelinConfiguration.java[create]:121) - Load configuration from file:/home/ubuntu/zeppelin/conf/zeppelin-site.xml INFO [2019-06-12 17:24:41,850] ({main} ZeppelinConfiguration.java[create]:129) - Server Host: 0.0.0.0 INFO [2019-06-12 17:24:41,851] ({main} ZeppelinConfiguration.java[create]:131) - Server Port: 8090 INFO [2019-06-12 17:24:41,851] ({main} ZeppelinConfiguration.java[create]:135) - Context Path: / INFO [2019-06-12 17:24:41,857] ({main} ZeppelinConfiguration.java[create]:136) - Zeppelin Version: 0.8.1 INFO [2019-06-12 17:24:41,959] ({main} Log.java[initialized]:193) - Logging ini tialized @1311ms to org.eclipse.jetty.util.log.Slf4jLog WARN [2019-06-12 17:24:42,023] ({main} ServerConnector.java[setSoLingerTime]:45 😎 - Ignoring deprecated socket close linger time INFO [2019-06-12 17:24:42,087] ({main} ZeppelinServer.java[setupWebAppContext]: 413) - ZeppelinServer Webapp path: /home/ubuntu/zeppelin/webapps INFO [2019-06-12 17:24:42,208] ({main} ZeppelinServer.java[main]:239) - Startin g zeppelin server INFO [2019-06-12 17:24:42,210] ({main} Server.java[doStart]:370) - jetty-9.4.14 .v20181114; built: 2018-11-14T21:20:31.478Z; git: c4550056e785fb5665914545889f21 dc136ad9e6; jvm 11.0.2+9-LTS INFO [2019-06-12 17:24:44,460] ({main} StandardDescriptorProcessor.java[visitSe rvlet]:283) - NO JSP Support for /, did not find org.eclipse.jetty.jsp.JettyJspS ervlet INFO [2019-06-12 17:24:44,486] ({main} DefaultSessionIdManager.java[doStart]:36 5) - DefaultSessionIdManager workerName=node0 INFO [2019-06-12 17:24:44,487] ({main} DefaultSessionIdManager.java[doStart]:37 0) - No SessionScavenger set, using defaults INFO [2019-06-12 17:24:44,492] ({main} HouseKeeper.java[startScavenging]:149) - node0 Scavenging every 600000ms INFO [2019-06-12 17:24:45,000] ({main} SchedulerFactory.java[]:59) - Sche duler Thread Pool Size: 100 WARN [2019-06-12 17:24:45,018] ({main} ZeppelinConfiguration.java[getConfigFSDi r]:527) - zeppelin.config.fs.dir is not specified, fall back to local conf direc tory zeppelin.conf.dir WARN [2019-06-12 17:24:45,020] ({main} ZeppelinConfiguration.java[getConfigFSDi r]:527) - zeppelin.config.fs.dir is not specified, fall back to local conf direc tory zeppelin.conf.dir INFO [2019-06-12 17:24:45,117] ({main} InterpreterSettingManager.java[]:1 65) - Using RecoveryStorage: org.apache.zeppelin.interpreter.recovery.NullRecove ryStorage INFO [2019-06-12 17:24:45,119] ({main} InterpreterSettingManager.java[]:1 69) - Using LifecycleManager: org.apache.zeppelin.interpreter.lifecycle.NullLife cycleManager INFO [2019-06-12 17:24:45,159] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: groovy INFO [2019-06-12 17:24:45,172] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: cassandra INFO [2019-06-12 17:24:45,184] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: livy INFO [2019-06-12 17:24:45,192] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: file INFO [2019-06-12 17:24:45,199] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: sh INFO [2019-06-12 17:24:45,205] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: sap WARN [2019-06-12 17:24:45,364] ({main} InterpreterSettingManager.java[init]:331 ) - No interpreter-setting.json found in /home/ubuntu/zeppelin/interpreter/scio INFO [2019-06-12 17:24:45,377] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: alluxio INFO [2019-06-12 17:24:45,385] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: md INFO [2019-06-12 17:24:45,393] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: elasticsearch INFO [2019-06-12 17:24:45,402] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: flink INFO [2019-06-12 17:24:45,409] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: python INFO [2019-06-12 17:24:45,415] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: angular INFO [2019-06-12 17:24:45,425] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: jdbc INFO [2019-06-12 17:24:45,431] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: spark INFO [2019-06-12 17:24:45,441] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: pig INFO [2019-06-12 17:24:45,450] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: kylin WARN [2019-06-12 17:24:45,452] ({main} InterpreterSettingManager.java[init]:331 ) - No interpreter-setting.json found in /home/ubuntu/zeppelin/interpreter/lib INFO [2019-06-12 17:24:45,457] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: bigquery INFO [2019-06-12 17:24:45,462] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: lens INFO [2019-06-12 17:24:45,469] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: ignite WARN [2019-06-12 17:24:45,473] ({main} InterpreterSettingManager.java[init]:331 ) - No interpreter-setting.json found in /home/ubuntu/zeppelin/interpreter/${int erpreter.name} INFO [2019-06-12 17:24:45,480] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: hbase INFO [2019-06-12 17:24:45,487] ({main} InterpreterSettingManager.java[registerI nterpreterSetting]:425) - Register InterpreterSettingTemplate: neo4j WARN [2019-06-12 17:24:45,488] ({main} LocalConfigStorage.java[loadInterpreterS ettings]:60) - Interpreter Setting file /home/ubuntu/zeppelin/conf/interpreter.j son is not existed INFO [2019-06-12 17:24:45,545] ({main} LocalConfigStorage.java[save]:53) - Save Interpreter Setting to /home/ubuntu/zeppelin/conf/interpreter.json INFO [2019-06-12 17:24:45,772] ({main} VfsLog.java[info]:138) - Using "/tmp/vfs _cache" as temporary files store. INFO [2019-06-12 17:24:45,853] ({main} GitNotebookRepo.java[]:64) - Openi ng a git repo at '/home/ubuntu/zeppelin/notebook' INFO [2019-06-12 17:24:45,988] ({main} GitNotebookRepo.java[]:67) - Git r epo /home/ubuntu/zeppelin/notebook/.git does not exist, creating a new one INFO [2019-06-12 17:24:46,026] ({main} NotebookRepoSync.java[]:77) - Inst antiate NotebookRepo: org.apache.zeppelin.notebook.repo.GitNotebookRepo WARN [2019-06-12 17:24:46,162] ({main} NotebookAuthorization.java[getInstance]: 86) - Notebook authorization module was called without initialization, initializ ing with default configuration WARN [2019-06-12 17:24:46,162] ({main} LocalConfigStorage.java[loadNotebookAuth orization]:77) - NotebookAuthorization file /home/ubuntu/zeppelin/conf/notebook- authorization.json is not existed INFO [2019-06-12 17:24:46,164] ({main} Credentials.java[loadFromFile]:121) - /h ome/ubuntu/zeppelin/conf/credentials.json INFO [2019-06-12 17:24:46,206] ({main} StdSchedulerFactory.java[instantiate]:11 84) - Using default implementation for ThreadExecutor INFO [2019-06-12 17:24:46,210] ({main} SimpleThreadPool.java[initialize]:268) - Job execution threads will use class loader of thread: main INFO [2019-06-12 17:24:46,228] ({main} SchedulerSignalerImpl.java[]:61) - Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignale rImpl INFO [2019-06-12 17:24:46,230] ({main} QuartzScheduler.java[]:240) - Quar tz Scheduler v.2.2.1 created. INFO [2019-06-12 17:24:46,231] ({main} RAMJobStore.java[initialize]:155) - RAMJ obStore initialized. INFO [2019-06-12 17:24:46,232] ({main} QuartzScheduler.java[initialize]:305) - Scheduler meta-data: Quartz Scheduler (v2.2.1) 'DefaultQuartzScheduler' with ins tanceId 'NON_CLUSTERED' Scheduler class: 'org.quartz.core.QuartzScheduler' - running locally. NOT STARTED. Currently in standby mode. Number of jobs executed: 0 Using thread pool 'org.quartz.simpl.SimpleThreadPool' - with 10 threads. Using job-store 'org.quartz.simpl.RAMJobStore' - which does not support persis tence. and is not clustered. INFO [2019-06-12 17:24:46,232] ({main} StdSchedulerFactory.java[instantiate]:13 39) - Quartz scheduler 'DefaultQuartzScheduler' initialized from default resourc e file in Quartz package: 'quartz.properties' INFO [2019-06-12 17:24:46,233] ({main} StdSchedulerFactory.java[instantiate]:13 43) - Quartz scheduler version: 2.2.1 INFO [2019-06-12 17:24:46,233] ({main} QuartzScheduler.java[start]:575) - Sched uler DefaultQuartzScheduler_$_NON_CLUSTERED started. INFO [2019-06-12 17:24:46,676] ({main} FolderView.java[createFolder]:107) - Cre ate folder Zeppelin Tutorial INFO [2019-06-12 17:24:46,677] ({main} FolderView.java[createFolder]:107) - Cre ate folder / INFO [2019-06-12 17:24:46,678] ({main} Folder.java[setParent]:169) - Set parent of / to / INFO [2019-06-12 17:24:46,678] ({main} Folder.java[setParent]:169) - Set parent of Zeppelin Tutorial to / INFO [2019-06-12 17:24:46,678] ({main} Folder.java[addNote]:185) - Add note 2C3 5YU814 to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,685] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,715] ({main} Folder.java[addNote]:185) - Add note 2C2 AUG798 to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,717] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,756] ({main} Folder.java[addNote]:185) - Add note 2BW JFTXKJ to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,758] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,766] ({main} Folder.java[addNote]:185) - Add note 2C5 7UKYWR to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,766] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,790] ({main} Folder.java[addNote]:185) - Add note 2BY EZ5EVK to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,791] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,798] ({main} Folder.java[addNote]:185) - Add note 2A9 4M5J1Z to folder Zeppelin Tutorial WARN [2019-06-12 17:24:46,799] ({main} Notebook.java[refreshCron]:981) - execut ion of the cron job is skipped cron is not enabled from Zeppelin server INFO [2019-06-12 17:24:46,799] ({main} Notebook.java[]:127) - Notebook in dexing started... INFO [2019-06-12 17:24:47,109] ({main} LuceneSearch.java[addIndexDocs]:305) - I ndexing 6 notebooks took 309ms INFO [2019-06-12 17:24:47,110] ({main} Notebook.java[]:129) - Notebook in dexing finished: 6 indexed in 0s INFO [2019-06-12 17:24:47,113] ({main} Helium.java[loadConf]:103) - Add helium local registry /home/ubuntu/zeppelin/helium INFO [2019-06-12 17:24:47,114] ({main} Helium.java[loadConf]:100) - Add helium online registry https://s3.amazonaws.com/helium-package/helium.json WARN [2019-06-12 17:24:47,118] ({main} Helium.java[loadConf]:111) - /home/ubunt u/zeppelin/conf/helium.json does not exists INFO [2019-06-12 17:24:49,641] ({main} ContextHandler.java[doStart]:855) - Star ted o.e.j.w.WebAppContext@6ca18a14{zeppelin-web,/,file:///home/ubuntu/zeppelin/w ebapps/webapp/,AVAILABLE}{/home/ubuntu/zeppelin/zeppelin-web-0.8.1.war}ERROR [2019-06-12 17:24:49,656] ({main} ZeppelinServer.java[main]:246) - Error w hile running jettyServerjava.io.IOException: Failed to bind to /0.0.0.0:8090 at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConn ector.java:346) at org.eclipse.jetty.server.ServerConnector.open(ServerConnector.java:30 8) at org.eclipse.jetty.server.AbstractNetworkConnector.doStart(AbstractNet workConnector.java:80) at org.eclipse.jetty.server.ServerConnector.doStart(ServerConnector.java :236) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLife Cycle.java:68) at org.eclipse.jetty.server.Server.doStart(Server.java:394) at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLife Cycle.java:68) at org.apache.zeppelin.server.ZeppelinServer.main(ZeppelinServer.java:24 1)Caused by: java.net.BindException: Address already in use at java.base/sun.nio.ch.Net.bind0(Native Method) at java.base/sun.nio.ch.Net.bind(Net.java:461) at java.base/sun.nio.ch.Net.bind(Net.java:453) at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannel Impl.java:227) at java.base/sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.jav a:80) at org.eclipse.jetty.server.ServerConnector.openAcceptChannel(ServerConn ector.java:342) ... 7 moreCan anyone please tell me how to fix the error? I cannot start my Zeppelin web UI. Any help or suggestion is appreciated. Thank you in advance!

jsensharma · Accepted Answer

@shraddha srivastavThe problem seems to be the Port Conflict on port "8090" .  (either change the Zeppelin port to something else or find and kill the other process which is using that port)ERROR [2019-06-12 17:24:49,656] ({main} ZeppelinServer.java[main]:246) - Error while running jettyServerjava.io.IOException: Failed to bind to /0.0.0.0:8090.Caused by: java.net.BindException: Address already in use        at java.base/sun.nio.ch.Net.bind0(Native Method).So before restarting Zeppelin please make sure that there is no other process which is using that port 8090.Please check which other process is using that port and kill that.# netstat -tnlpa | grep 8090.You can also try running the following command to see if oyu are able to bind to that port 8090 using simple netcat command or not? this is just to verify if that port is free to be binded or not?# nc -l 8090If that port is already in use by some other process then you should see the following kind of error when you run that command:# nc -l 8090Ncat: bind to :::8090: Address already in use. QUITTING..

shraddhasrivast · Answer

@Jay Kumar SenSharma Yes you are right i gave the # nc -l 8090 and got the following output:

ubuntu@ip-20-20-30-213:~$ sudo nc -l 8090

nc: Address already in use

So if i change the port to 8888 in Zeppelin-site-xml file, willl it solve the issue?

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