Failed to start ODK

1. What is the problem? Be very detailed.
After I installed ODK Aggregrate on Liunx (Centos 7.9), with Tomcat 8.5.51.0 and MySQL 5.7, the Tomcat start failed.
2. What app or server are you using and on what device and operating system? Include version numbers.
ODK Aggregrate
Tomcat 8.5.51.0
MySQL 5.7
On Linux CentOS 7.9

3. What you have you tried to fix the problem?
I followed t he instruction on Installing on Tomcat — ODK Docs to double checked everything.

4. What steps can we take to reproduce the problem?
Try to start tomcat with "service tomcat start", but noticed that it failed to start.

5. Anything else we should know or have? If you have a test form or screenshots or logs, attach below.
I am going to upload the tomcat log, please check.

I want to upload tomcat log. How could I attach/upload the log in this forum ?

Thanks

Hi Saad,

I failed to start tomcat:
CentOS 7
Tomcat/8.5.51
MySQL 5.7

Any idea why ?

Need to see either tomcat logs or some other diagnosis. Cannot judge without any symptoms :slight_smile:

1 Like

It is very easy to upload files in your comments. You can see the same in the attached video: https://youtu.be/vziPmGTRZEk

One more thing, it might be possible that your port 8080 (generally for Tomcat) or Port 80 is occupied by some other service which is not allowing Tomcat to start. But as suggested by Saad, only after we see tomcat logs, that we will be able to share some inputs on what is causing the issue.

1 Like

Hi Saad , I am uploading the tomcat log. I appreciate the prompt help from you and any forum members catalina.2021-01-08.log.zip|attachment (3.2 KB)

Specifically, I am also posting the log below:

08-Jan-2021 11:24:44.233 WARNING [main] org.apache.tomcat.util.digester.SetPropertiesRule.begin [SetPropertiesRule]{Server/Service/Engine/Host/Valve} Setting property 'resolveHosts' to 'true' did not find a matching property.
08-Jan-2021 11:24:44.245 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/8.5.51
08-Jan-2021 11:24:44.245 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Feb 5 2020 22:26:25 UTC
08-Jan-2021 11:24:44.245 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 8.5.51.0
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            3.10.0-862.9.1.el7.x86_64
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.252.b09-2.el7_8.x86_64/jre
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_252-b09
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /opt/tomcat/apache-tomcat-8.5.51
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /opt/tomcat/apache-tomcat-8.5.51
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/opt/tomcat/latest/conf/logging.properties
08-Jan-2021 11:24:44.246 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -XX:+UseParNewGC
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -XX:MaxPermSize=2048m
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Xms512m
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Xmx4096m
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/opt/tomcat/latest
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/opt/tomcat/latest
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/opt/tomcat/latest/temp
08-Jan-2021 11:24:44.247 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]
08-Jan-2021 11:24:44.296 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-162.119.197.27-8080"]
08-Jan-2021 11:24:44.302 SEVERE [main] org.apache.catalina.core.StandardService.initInternal Failed to initialize connector [Connector[HTTP/1.1-8080]]
	org.apache.catalina.LifecycleException: Protocol handler initialization failed
		at org.apache.catalina.connector.Connector.initInternal(Connector.java:1032)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.core.StandardService.initInternal(StandardService.java:552)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:848)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.startup.Catalina.load(Catalina.java:639)
		at org.apache.catalina.startup.Catalina.load(Catalina.java:662)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:303)
		at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)
	Caused by: java.net.BindException: Cannot assign requested address
		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:220)
		at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
		at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:221)
		at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1118)
		at org.apache.tomcat.util.net.AbstractJsseEndpoint.init(AbstractJsseEndpoint.java:223)
		at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:587)
		at org.apache.coyote.http11.AbstractHttp11Protocol.init(AbstractHttp11Protocol.java:74)
		at org.apache.catalina.connector.Connector.initInternal(Connector.java:1030)
		... 13 more
08-Jan-2021 11:24:44.303 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-162.119.197.27-8009"]
08-Jan-2021 11:24:44.304 SEVERE [main] org.apache.catalina.core.StandardService.initInternal Failed to initialize connector [Connector[AJP/1.3-8009]]
	org.apache.catalina.LifecycleException: Protocol handler initialization failed
		at org.apache.catalina.connector.Connector.initInternal(Connector.java:1032)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.core.StandardService.initInternal(StandardService.java:552)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:848)
		at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
		at org.apache.catalina.startup.Catalina.load(Catalina.java:639)
		at org.apache.catalina.startup.Catalina.load(Catalina.java:662)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:303)
		at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473)
	Caused by: java.net.BindException: Cannot assign requested address
		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:220)
		at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:85)
		at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:221)
		at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:1118)
		at org.apache.tomcat.util.net.AbstractJsseEndpoint.init(AbstractJsseEndpoint.java:223)
		at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:587)
		at org.apache.catalina.connector.Connector.initInternal(Connector.java:1030)
		... 13 more
08-Jan-2021 11:24:44.305 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["https-jsse-nio-162.119.235.42-8443"]
08-Jan-2021 11:24:44.636 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
08-Jan-2021 11:24:44.645 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 693 ms
08-Jan-2021 11:24:44.665 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
08-Jan-2021 11:24:44.665 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.51
08-Jan-2021 11:24:44.672 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/opt/tomcat/apache-tomcat-8.5.51/webapps/ODKAggregate.war]
08-Jan-2021 11:24:46.662 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/opt/tomcat/apache-tomcat-8.5.51/webapps/ODKAggregate.war] has finished in [1,990] ms
08-Jan-2021 11:24:46.663 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/docs]
08-Jan-2021 11:24:46.672 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/docs] has finished in [9] ms
08-Jan-2021 11:24:46.672 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/host-manager]
08-Jan-2021 11:24:46.687 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/host-manager] has finished in [14] ms
08-Jan-2021 11:24:46.687 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/manager]
08-Jan-2021 11:24:46.697 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/manager] has finished in [10] ms
08-Jan-2021 11:24:46.698 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/examples]
08-Jan-2021 11:24:46.794 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
08-Jan-2021 11:24:46.794 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()
08-Jan-2021 11:24:46.795 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker', 'async.Stockticker@83b5df4')
08-Jan-2021 11:24:46.797 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/examples] has finished in [99] ms
08-Jan-2021 11:24:46.797 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/ODK Aggregate]
08-Jan-2021 11:24:46.805 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.51/webapps/ODK Aggregate] has finished in [8] ms
08-Jan-2021 11:24:46.807 SEVERE [Catalina-startStop-1] org.apache.catalina.core.ContainerBase.startInternal A child container failed during start
	java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at java.util.concurrent.FutureTask.report(FutureTask.java:122)
		at java.util.concurrent.FutureTask.get(FutureTask.java:192)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)
		at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
		at java.util.concurrent.FutureTask.run(FutureTask.java:266)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
		at java.lang.Thread.run(Thread.java:748)
	Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
		at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4814)
		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4949)
		... 7 more
	Caused by: java.lang.IllegalArgumentException: The main resource set specified [/opt/tomcat/apache-tomcat-8.5.51/webapps/odk] is not valid
		at org.apache.catalina.webresources.StandardRoot.createMainResourceSet(StandardRoot.java:748)
		at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:706)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		... 9 more
08-Jan-2021 11:24:46.808 SEVERE [main] org.apache.catalina.core.ContainerBase.startInternal A child container failed during start
	java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
		at java.util.concurrent.FutureTask.report(FutureTask.java:122)
		at java.util.concurrent.FutureTask.get(FutureTask.java:192)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)
		at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:766)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.startup.Catalina.start(Catalina.java:688)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
		at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
	Caused by: org.apache.catalina.LifecycleException: A child container failed during start
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:942)
		at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
		at java.util.concurrent.FutureTask.run(FutureTask.java:266)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
		at java.lang.Thread.run(Thread.java:748)
	Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at java.util.concurrent.FutureTask.report(FutureTask.java:122)
		at java.util.concurrent.FutureTask.get(FutureTask.java:192)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)
		... 8 more
	Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
		at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4814)
		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4949)
		... 7 more
	Caused by: java.lang.IllegalArgumentException: The main resource set specified [/opt/tomcat/apache-tomcat-8.5.51/webapps/odk] is not valid
		at org.apache.catalina.webresources.StandardRoot.createMainResourceSet(StandardRoot.java:748)
		at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:706)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		... 9 more
08-Jan-2021 11:24:46.808 SEVERE [main] org.apache.catalina.startup.Catalina.start The required Server component failed to start so Tomcat is unable to start.
	org.apache.catalina.LifecycleException: A child container failed during start
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:942)
		at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:766)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.startup.Catalina.start(Catalina.java:688)
		at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
		at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
		at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
		at java.lang.reflect.Method.invoke(Method.java:498)
		at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343)
		at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474)
	Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
		at java.util.concurrent.FutureTask.report(FutureTask.java:122)
		at java.util.concurrent.FutureTask.get(FutureTask.java:192)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)
		... 13 more
	Caused by: org.apache.catalina.LifecycleException: A child container failed during start
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:942)
		at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
		at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
		at java.util.concurrent.FutureTask.run(FutureTask.java:266)
		at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
		at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
		at java.lang.Thread.run(Thread.java:748)
	Caused by: java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at java.util.concurrent.FutureTask.report(FutureTask.java:122)
		at java.util.concurrent.FutureTask.get(FutureTask.java:192)
		at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:931)
		... 8 more
	Caused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.webresources.StandardRoot@1c9cf9c4]
		at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
		at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4814)
		at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4949)
		... 7 more
	Caused by: java.lang.IllegalArgumentException: The main resource set specified [/opt/tomcat/apache-tomcat-8.5.51/webapps/odk] is not valid
		at org.apache.catalina.webresources.StandardRoot.createMainResourceSet(StandardRoot.java:748)
		at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:706)
		at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
		... 9 more
08-Jan-2021 11:24:46.809 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-162.119.197.27-8080"]
08-Jan-2021 11:24:46.809 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-162.119.197.27-8009"]
08-Jan-2021 11:24:46.809 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["https-jsse-nio-162.119.235.42-8443"]
08-Jan-2021 11:24:46.809 INFO [main] org.apache.catalina.core.StandardService.stopInternal Stopping service [Catalina]
08-Jan-2021 11:24:46.811 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
08-Jan-2021 11:24:46.811 INFO [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
08-Jan-2021 11:24:46.827 WARNING [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesJdbc The web application [ODKAggregate] registered the JDBC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
08-Jan-2021 11:24:46.829 WARNING [csidclpva03.kp-scalresearch.org-startStop-1] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ODKAggregate] appears to have started a thread named [Abandoned connection cleanup thread] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
 java.lang.Object.wait(Native Method)
 java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:144)
 com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:64)
 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 java.lang.Thread.run(Thread.java:748)
08-Jan-2021 11:24:46.833 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-162.119.197.27-8080"]
08-Jan-2021 11:24:46.834 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-162.119.197.27-8080"]
08-Jan-2021 11:24:46.834 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-162.119.197.27-8009"]
08-Jan-2021 11:24:46.834 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-162.119.197.27-8009"]
08-Jan-2021 11:24:46.834 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["https-jsse-nio-162.119.235.42-8443"]