start_crowd.sh is fine, but stop_crowd.sh always throw a error. see below:

[root@ip-172-31-9-121 atlassian-crowd-3.2.3]# ./start_crowd.sh[root@ip-172-31-9-121 atlassian-crowd-3.2.3]# ./start_crowd.shTo run Crowd in the foreground, start the server with ./start_crowd.sh -fgUsing CATALINA_BASE:   /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcatUsing CATALINA_HOME:   /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcatUsing CATALINA_TMPDIR: /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/tempUsing JRE_HOME:        /usr/java/jdk1.8.0_121/Using CLASSPATH:       /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/bin/bootstrap.jar:/opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/bin/tomcat-juli.jarUsing CATALINA_PID:    /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/work/catalina.pidTomcat started.[root@ip-172-31-9-121 atlassian-crowd-3.2.3]# ./stop_crowd.shUsing CATALINA_BASE:   /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcatUsing CATALINA_HOME:   /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcatUsing CATALINA_TMPDIR: /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/tempUsing JRE_HOME:        /usr/java/jdk1.8.0_121/Using CLASSPATH:       /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/bin/bootstrap.jar:/opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/bin/tomcat-juli.jarUsing CATALINA_PID:    /opt/atlassian/atlassian-crowd-3.2.3/apache-tomcat/work/catalina.pidSep 25, 2018 8:14:00 PM org.apache.catalina.startup.Catalina stopServerSEVERE: Could not contact [localhost:[8020]]. Tomcat may not be running.Sep 25, 2018 8:14:00 PM org.apache.catalina.startup.Catalina stopServerSEVERE: Catalina.stop: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:477) 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:408) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:497)
The stop command failed. Attempting to signal the process to stop through OS signal.Tomcat stopped.