Problem

When trying to stop Crowd via ./stop_crowd.sh, apache tomcat was unable to stop properly. We have run the script twice to kill the tomcat.

Environment

• AdoptOpenJdk 1.8.0_202
• Crowd 5.0.1

Steps to Reproduce

1. Install Crowd 5.0.1
2. Startup Crowd with the script ./start_crowd.sh or system service
3. Once startup finished successfully, stop the Crowd ./stop_crowd.sh
4. The first attempt will fail with the below error message

   root@ip-10-9-31-134:/opt/atlassian/crowd/atlassian-crowd-5.0.1# ./stop_crowd.sh
   Using CATALINA_BASE:   /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat
   Using CATALINA_HOME:   /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat
   Using CATALINA_TMPDIR: /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/temp
   Using JRE_HOME:        /opt/jdk8u202-b08/jre
   Using CLASSPATH:       /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/bin/bootstrap.jar:/opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/bin/tomcat-juli.jar
   Using CATALINA_OPTS:
   Using CATALINA_PID:    /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/work/catalina.pid
   Tomcat did not stop in time.
   PID file was not removed.
   To aid diagnostics a thread dump has been written to standard out.
   

5. The second attempt will successfully stop the tomcat however, you will see the below error message

   root@ip-10-9-31-134:/opt/atlassian/crowd/atlassian-crowd-5.0.1# ./stop_crowd.sh
   Using CATALINA_BASE:   /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat
   Using CATALINA_HOME:   /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat
   Using CATALINA_TMPDIR: /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/temp
   Using JRE_HOME:        /opt/jdk8u202-b08/jre
   Using CLASSPATH:       /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/bin/bootstrap.jar:/opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/bin/tomcat-juli.jar
   Using CATALINA_OPTS:
   Using CATALINA_PID:    /opt/atlassian/crowd/atlassian-crowd-5.0.1/apache-tomcat/work/catalina.pid
   Jul 26, 2022 2:28:45 AM org.apache.catalina.startup.Catalina stopServer
   SEVERE: Could not contact [localhost:8020] (base port [8020] and offset [0]). Tomcat may not be running.
   Jul 26, 2022 2:28:45 AM org.apache.catalina.startup.Catalina stopServer
   SEVERE: Error stopping Catalina
   java.net.ConnectException: Connection refused (Connection refused)
   	at java.net.PlainSocketImpl.socketConnect(Native Method)
   	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
   	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
   	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
   	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
   	at java.net.Socket.connect(Socket.java:589)
   	at java.net.Socket.connect(Socket.java:538)
   	at java.net.Socket.<init>(Socket.java:434)
   	at java.net.Socket.<init>(Socket.java:211)
   	at org.apache.catalina.startup.Catalina.stopServer(Catalina.java:511)
   	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.stopServer(Bootstrap.java:391)
   	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:481)
   
   The stop command failed. Attempting to signal the process to stop through OS signal.
   Tomcat stopped.
   

Expected Results

Crowd should be able to stop properly

Actual Results

See the above error messages from steps 4 and 5

Workaround

Adding a -force header helps to shut down the Crowd. But there is no way to gracefully shut it down.

stop-crowd.sh -force

Notes

• Issue cannot be reproduced in Crowd 4.4