Unable To Create the file [META-INF/war-tracker] Tomcat 9 linux

Question

Tomcat logs:

java.io.IOException: Unable to create the file [/usr/local/tomcat/webapps/mywebapp/META-INF/war-tracker]
    at org.apache.catalina.startup.ExpandWar.expand(ExpandWar.java:180)
    at org.apache.catalina.startup.ContextConfig.fixDocBase(ContextConfig.java:609)
    at org.apache.catalina.startup.ContextConfig.beforeStart(ContextConfig.java:742)
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:301)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
    at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:182)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:743)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:695)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:986)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1858)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
    at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:772)
    at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:426)
    at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1585)
    at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:308)
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123)
    at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:424)
    at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:367)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:972)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:831)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1432)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1422)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:944)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:261)
    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:801)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:695)
    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:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)

Suddenly the server does not work, Not extracted The WAR file in webapps, can not work with API requests,

Context file :

<Context>
<WatchedResource>WEB-INF/web.xml</WatchedResource>
<WatchedResource>${catalina.base}/conf/web.xml</WatchedResource>

I tried to deploye from the manager on TOMCAT's page and again it was not successful.

find in logs : Unable to create the file [/usr/local/tomcat/webapps/mywebapp/META-INF/war-tracker] I looked for solutions and did not find, anyone there that happened to him?

Tomcat : apache-tomcat-9.0.13 openjdk version "1.8.0_171"

Answer 1

The problem is the file "META-INF/war-tracker" in the deployment-war:

From the Tomcat-docs:

Note: If Tomcat expands the WAR file then it will add a file (/META-INF/war-tracking) to the unpacked directory structure which it uses to detect changes in the WAR file while Tomcat is not running. Any such change will trigger the deletion of the expanded directory and the deployment of the updated WAR file when Tomcat next starts.

It seems that you manually packed the war-file and included META-INF/war-tracker. During deployment, Tomcat (from version 8 onwards AFAIK) tries to create said file to detect the changes. However, if such a file exists, Tomcat is not able to create the file and will throw the exception you mentioned above.

Solution:

Remove the file "META-INF/war-tracker" from your war-file before deployment and you're all set.

Answer 2

We had exactly the same behaviour under Windows. In our case, the explanation was simple, whereas hard do find: there already was a file META-INF/war-tracker within the *.war we were deploying. Presumably, the war had been forged by hand based on an already unpacked directory tree instead of being created by the IDE.