Tomcat 8 on CentOS 7 does not start as service (bu

Question

I've installed Tomcat (apache-tomcat-8.5.37), on a CentOS VM (using bento/centos-7).

Tomcat is installed in

/opt/tomcat/apache-tomcat-8.5.37

and Java 8 is installed in

/usr/java/jre1.8.0_192-amd64

Before to install Tomcat I've created a tomcat user in this way

sudo useradd tomcat
sudo passwd tomcat
sudo mkdir /opt/tomcat
sudo chown -R tomcat:tomcat /opt/tomcat
su – tomcat

If I try to start Tomcat manually using

/opt/tomcat/apache-tomcat-8.5.37/bin/startup.sh

all works fine and I can test Tomcat ad its examples from the url

http://192.168.33.10:8080

(note: 192.168.33.10 is the IP of my virtual machine ...)

I can also shutdown Tomcat using

/opt/tomcat/apache-tomcat-8.5.37/bin/shutdown.sh

I'd like to start Tomcat like e service so I've stopped Tomcat and then I've edited a file

/etc/systemd/system/tomcat.service

with this content

[Unit]
Description=Apache Tomcat Web Application Container
After=syslog.target network.target

[Service]
Type=forking

Environment=JAVA_HOME=/usr/java/jre1.8.0_192-amd64
Environment=CATALINA_PID=/opt/tomcat/apache-tomcat-8.5.37/temp/tomcat.pid
Environment=CATALINA_HOME=/opt/tomcat/apache-tomcat-8.5.37/
Environment=CATALINA_BASE=/opt/tomcat/apache-tomcat-8.5.37/
Environment='CATALINA_OPTS=-Xms512M -Xmx1024M -server -XX:+UseParallelGC'
Environment='JAVA_OPTS=-Djava.awt.headless=true -Djava.security.egd=file:/dev/./urandom'

ExecStart=/opt/tomcat/apache-tomcat-8.5.37/bin/startup.sh
ExecStop=/bin/kill -15 $MAINPID

User=tomcat
Group=tomcat
UMask=0007

[Install]
WantedBy=multi-user.target

Then

sudo systemctl daemon-reload

and

sudo systemctl start tomcat

Tomcat does not responding now invoking the url

http://192.168.33.10:8080

and the output of

sudo systemctl status tomcat

is the follow

● tomcat.service - Apache Tomcat Web Application Container
   Loaded: loaded (/etc/systemd/system/tomcat.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2019-01-01 09:34:46 UTC; 13min ago
  Process: 14438 ExecStop=/bin/kill -15 $MAINPID (code=exited, status=1/FAILURE)
  Process: 14425 ExecStart=/opt/tomcat/apache-tomcat-8.5.37/bin/startup.sh (code=exited, status=0/SUCCESS)
 Main PID: 14436 (code=exited, status=0/SUCCESS)

Jan 01 09:34:46 localhost.localdomain systemd[1]: Starting Apache Tomcat Web Application Container...
Jan 01 09:34:46 localhost.localdomain startup.sh[14425]: Existing PID file found during start.
Jan 01 09:34:46 localhost.localdomain startup.sh[14425]: Removing/clearing stale PID file.
Jan 01 09:34:46 localhost.localdomain systemd[1]: Started Apache Tomcat Web Application Container.
Jan 01 09:34:46 localhost.localdomain systemd[1]: tomcat.service: control process exited, code=exited status=1
Jan 01 09:34:46 localhost.localdomain systemd[1]: Unit tomcat.service entered failed state.
Jan 01 09:34:46 localhost.localdomain systemd[1]: tomcat.service failed.

The output of

journalctl -xe

is the follow

Jan 01 09:34:46 localhost.localdomain sudo[14418]:   tomcat : TTY=pts/0 ; PWD=/opt/tomcat/apache-tomcat-8.5.37/temp ; USER=root ; COMMAND=/bin/systemctl start tomcat
Jan 01 09:34:46 localhost.localdomain polkitd[635]: Registered Authentication Agent for unix-process:14419:1135902 (system bus name :1.85 [/usr/bin/pkttyagent --notify-fd 5 --fallb
Jan 01 09:34:46 localhost.localdomain systemd[1]: Starting Apache Tomcat Web Application Container...
-- Subject: Unit tomcat.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit tomcat.service has begun starting up.
Jan 01 09:34:46 localhost.localdomain startup.sh[14425]: Existing PID file found during start.
Jan 01 09:34:46 localhost.localdomain startup.sh[14425]: Removing/clearing stale PID file.
Jan 01 09:34:46 localhost.localdomain startup.sh[14425]: Tomcat started.
Jan 01 09:34:46 localhost.localdomain polkitd[635]: Unregistered Authentication Agent for unix-process:14419:1135902 (system bus name :1.85, object path /org/freedesktop/PolicyKit1
Jan 01 09:34:46 localhost.localdomain systemd[1]: Started Apache Tomcat Web Application Container.
-- Subject: Unit tomcat.service has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit tomcat.service has finished starting up.
--
-- The start-up result is done.
Jan 01 09:34:46 localhost.localdomain kill[14438]: Usage:
Jan 01 09:34:46 localhost.localdomain kill[14438]: kill [options] <pid|name> [...]
Jan 01 09:34:46 localhost.localdomain kill[14438]: Options:
Jan 01 09:34:46 localhost.localdomain kill[14438]: -a, --all              do not restrict the name-to-pid conversion to processes
Jan 01 09:34:46 localhost.localdomain kill[14438]: with the same uid as the present process
Jan 01 09:34:46 localhost.localdomain kill[14438]: -s, --signal <sig>     send specified signal
Jan 01 09:34:46 localhost.localdomain kill[14438]: -q, --queue <sig>      use sigqueue(2) rather than kill(2)
Jan 01 09:34:46 localhost.localdomain kill[14438]: -p, --pid              print pids without signaling them
Jan 01 09:34:46 localhost.localdomain kill[14438]: -l, --list [=<signal>] list signal names, or convert one to a name
Jan 01 09:34:46 localhost.localdomain kill[14438]: -L, --table            list signal names and numbers
Jan 01 09:34:46 localhost.localdomain kill[14438]: -h, --help     display this help and exit
Jan 01 09:34:46 localhost.localdomain kill[14438]: -V, --version  output version information and exit
Jan 01 09:34:46 localhost.localdomain kill[14438]: For more details see kill(1).
Jan 01 09:34:46 localhost.localdomain systemd[1]: tomcat.service: control process exited, code=exited status=1
Jan 01 09:34:46 localhost.localdomain systemd[1]: Unit tomcat.service entered failed state.
Jan 01 09:34:46 localhost.localdomain systemd[1]: tomcat.service failed.
Jan 01 09:34:59 localhost.localdomain sudo[14451]:   tomcat : TTY=pts/0 ; PWD=/opt/tomcat/apache-tomcat-8.5.37/temp ; USER=root ; COMMAND=/bin/systemctl status tomcat
Jan 01 09:48:45 localhost.localdomain sudo[15115]:   tomcat : TTY=pts/0 ; PWD=/opt/tomcat/apache-tomcat-8.5.37/bin ; USER=root ; COMMAND=/bin/systemctl status tomcat

The output of catalina.out is the follow

01-Jan-2019 09:09:21.585 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
01-Jan-2019 09:09:21.602 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
01-Jan-2019 09:09:21.614 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 2829 ms
01-Jan-2019 09:09:21.697 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
01-Jan-2019 09:09:21.697 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.37
01-Jan-2019 09:09:21.738 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/ROOT]
01-Jan-2019 09:09:22.777 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/ROOT] has finished in [1,038] ms
01-Jan-2019 09:09:22.795 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/docs]
01-Jan-2019 09:09:22.847 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/docs] has finished in [70] ms
01-Jan-2019 09:09:22.847 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/examples]
01-Jan-2019 09:09:23.468 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/examples] has finished in [621] ms
01-Jan-2019 09:09:23.469 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/host-manager]
01-Jan-2019 09:09:23.522 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/host-manager] has finished in [54] ms
01-Jan-2019 09:09:23.522 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/manager]
01-Jan-2019 09:09:23.569 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/opt/tomcat/apache-tomcat-8.5.37/webapps/manager] has finished in [47] ms
01-Jan-2019 09:09:23.592 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
01-Jan-2019 09:09:23.601 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
01-Jan-2019 09:09:23.604 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 1990 ms
01-Jan-2019 09:12:38.830 INFO [main] org.apache.catalina.core.StandardServer.await A valid shutdown command was received via the shutdown port. Stopping the Server instance.
01-Jan-2019 09:12:38.831 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["http-nio-8080"]
01-Jan-2019 09:12:38.870 INFO [main] org.apache.coyote.AbstractProtocol.pause Pausing ProtocolHandler ["ajp-nio-8009"]
01-Jan-2019 09:12:38.878 INFO [main] org.apache.catalina.core.StandardService.stopInternal Stopping service [Catalina]
01-Jan-2019 09:12:39.117 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["http-nio-8080"]
01-Jan-2019 09:12:39.123 INFO [main] org.apache.coyote.AbstractProtocol.stop Stopping ProtocolHandler ["ajp-nio-8009"]
01-Jan-2019 09:12:39.131 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["http-nio-8080"]
01-Jan-2019 09:12:39.137 INFO [main] org.apache.coyote.AbstractProtocol.destroy Destroying ProtocolHandler ["ajp-nio-8009"]

????

Suggestions are appreciated!!

Answer 1

delete pid file as said in your error message

Existing PID file found during start.

/opt/tomcat/apache-tomcat-8.5.37/temp/tomcat.pid