Apache-tomcat-7.0.42 Java 1.7.0_45-b18 CentOS Linux release 7.2.1511 I have been using various releases of Apache Tomcat as a standalone web server and servlet container to serve a commercial web-app written entirely in Java for the past 4 years. Recently my server host informed me that I needed to move to their 'cloud'.
This meant moving from a CentOS release 5.2 system that used a SysV-style init script in /etc/rc.d/init.d with symbolic links in rc2.d, rc3.d, rc4.d and rc5.d to a CentOS Linux release 7.2.1511 system that used a systemd init system The init.d script was called tomcat7 and is listed at the end of this message. Tomcat is employed as a stand alone web server binding to the default port for inbound non-encrypted http traffic which is port 80. Due to the restricions placed on privileged ports (< 1024) by UNIX like systems this required the use of an additional component. The component chosen was jsvc (http://commons.apache.org/proper/commons-daemon/jsvc.html) Tomcat documentation re jsvc (https://tomcat.apache.org/tomcat-7.0-doc/setup.html) The first attempt at getting Tomcat to start after a system reboot consisted of calling the original inid.d script. # touch /etc/systemd/system/tomcat.service tomcat.service began life as follows [Unit] Description=The Jakarta Apache/Tomcat Server After=network.target [Service] Type=forking ExecStart=/etc/rc.d/init.d/tomcat7 start ExecStop=/etc/rc.d/init.d/tomcat7 stop [Install] WantedBy=multi-user.target This and many other versions that called the original init.d script failed with various systemd error codes The reason(s) are as yet not fully understood. The final solution shows the invocation arguments passed to jsvc in longhand, this is the only way we could get it to work. [Unit] Description=Apache Tomcat Web Application Container After=network.target [Service] Type=forking User=root ExecStart=/opt/apache-tomcat-7.0.42/bin/jsvc \ -user tomcat \ -home /opt/jdk1.7.0_45 \ -Dcatalina.home=/opt/apache-tomcat-7.0.42 \ -Dcatalina.base=/opt/apache-tomcat-7.0.42 \ -Djava.io.tmpdir=/var/tmp \ -Djava.awt.headless=true \ -Xms512m \ -Xmx1024m \ -outfile /opt/apache-tomcat-7.0.42/logs/catalina.out \ -errfile /opt/apache-tomcat-7.0.42/logs/catalina.err \ -pidfile /var/run/tc7/jsvc.pid \ -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager \ -Djava.util.logging.config.file=/opt/apache-tomcat-7.0.42/conf/logging.properties \ -cp /opt/apache-tomcat-7.0.42/bin/bootstrap.jar:/opt/apache-tomcat-7.0.42/bin/commons-daemon.jar:/opt/jdk1.7.0_45/lib/tools.jar:/opt/apache-tomcat-7.0.42/bin/tomcat-juli.jar \ org.apache.catalina.startup.Bootstrap ExecStop=/bin/kill -9 /var/run/tc7/jsvc.pid ExecStopPost=/bin/rm -f /var/tc7lock/subsys/tomcat /var/run/tc7/jsvc.pid [Install] WantedBy=multi-user.target This works fine and Tomcat starts as expected when the system reboots. Hope this saves someone some aggravation. There is still much that is not understood and experimentation is ongoing as time allows. Lyallex =========================== /etc/rc.d/init.d/tomcat7 =========================== JAVA_HOME=/opt/jdk1.7.0_45 CATALINA_HOME=/opt/apache-tomcat-7.0.42 export JAVA_HOME CATALINA_HOME CLASSPATH=$CATALINA_HOME/bin/bootstrap.jar:$CATALINA_HOME/bin/commons-daemon.jar:$JAVA_HOME/lib/tools.jar:$CATALINA_HOME/bin/tomcat-juli.jar TOMCAT_USER=tomcat TMPDIR=/var/tmp PIDFILE=/var/run/tc7/jsvc.pid RC=0 case "$1" in start) $CATALINA_HOME/bin/jsvc -user $TOMCAT_USER -home $JAVA_HOME -Dcatalina.home=/opt/apache-tomcat-7.0.42 -Dcatalina.base=$CATALINA_HOME -Djava.io.tmpdir=$TMPDIR -Djava.awt.headless=true \ -Xms512m \ -Xmx1024m \ -outfile $CATALINA_HOME/logs/catalina.out \ -errfile $CATALINA_HOME/logs/catalina.err \ -pidfile '/var/run/tc7/jsvc.pid' \ -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager \ -Djava.util.logging.config.file=$CATALINA_HOME/conf/logging.properties \ -cp $CLASSPATH \ org.apache.catalina.startup.Bootstrap RC=$? [ $RC = 0 ] && touch /var/tc7lock/subsys/tomcat echo "starting tomcat7 on darkstar with:" echo "JAVA_HOME=$JAVA_HOME" echo "CATALINA_HOME=$CATALINA_HOME" echo "CLASSPATH=$CLASSPATH" echo "tomcat started" ;; stop) PID=`cat /var/run/tc7/jsvc.pid` kill $PID RC=$? [ $RC = 0 ] && rm -f /var/tc7lock/subsys/tomcat /var/run/tc7/jsvc.pid echo "stopping tomcat7 on darkstar with:" echo "JAVA_HOME=$JAVA_HOME" echo "CATALINA_HOME=$CATALINA_HOME" echo "CLASSPATH=$CLASSPATH" echo "tomcat stopped" ;; *) echo "Usage: $0 {start|stop}" exit 1 esac exit $RC --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
