这篇文章，是上一篇 Jenkins 部署 远程调试的继续，
为了解决的问题
为了解决这样的一个问题：假设在用户 abc 的home 目录 /home/abc 下有两个tomcat，分别放在了
apache-tomcat-8.5.29_projects 和 apache-tomcat-8.5.29_Jenkins 目录下。
一个监听7070端口，一个监听8080端口。
调用 /home/abc/apache-tomcat-8.5.29_projects/bin/shutdown.sh 会把 在 apache-tomcat-8.5.29_Jenkins 目录启动的tomcat也杀掉。
虽然有简单的脚本 start.sh 和 stop.sh 可以解决这个问题。但是这个两个脚本有个小问题：CATALINA_HOME 和 CATALINA_BASE 路径是写死的。这样的话，如果在多个地方部署的话，需要修改多次。
假如有一个脚本，跟start.sh 和stop.sh 一样，放在了 apache-tomcat-8.5.29/bin 目录下，但是不用写死路径，而是以当前脚本的路径为启动，自己去判断 CATALINA_HOME 和 CATALINA_BASE 就好了。
start.sh
export JAVA_HOME=/usr/java/jdk1.8.0_152
export CATALINA_HOME=/home/abc/apache-tomcat-8.5.29_projects
export CATALINA_BASE=/home/abc/apache-tomcat-8.5.29_projects
export CATALINA_PID=${CATALINA_BASE}/tomcat.pid
${CATALINA_HOME}/bin/catalina.sh start
stop.sh
export JAVA_HOME=/usr/java/jdk1.8.0_152
export CATALINA_HOME=/home/abc/apache-tomcat-8.5.29_projects
export CATALINA_BASE=/home/abc/apache-tomcat-8.5.29_projects
export CATALINA_PID=${CATALINA_BASE}/tomcat.pid
${CATALINA_HOME}/bin/catalina.sh stop
脚本
这个脚本是根据ubuntu自带的 /etc/init.d/tomcat8 修改而来。
#!/bin/sh
#
# this file is based on ubuntu's /etc/init.d/tomcat8
#
# /etc/init.d/tomcat8 -- startup script for the Tomcat 8 servlet engine
#
# Written by Miquel van Smoorenburg .
# Modified for Debian GNU/Linux by Ian Murdock .
# Modified for Tomcat by Stefan Gybas .
# Modified for Tomcat6 by Thierry Carrez .
# Modified for Tomcat7 by Ernesto Hernandez-Novich .
# Additional improvements by Jason Brittain .
#
### BEGIN INIT INFO
# Provides: tomcat8
# Required-Start: $local_fs $remote_fs $network
# Required-Stop: $local_fs $remote_fs $network
# Should-Start: $named
# Should-Stop: $named
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start Tomcat.
# Description: Start the Tomcat servlet engine.
### END INIT INFO
# use tomcat_dir/bin as start directory
# CATALINA_HOME=/usr/share/$NAME
CWD=$(realpath $0)
CWD=$(dirname $CWD)
CWD=$(dirname $CWD)
# Directory for per-instance configuration files and webapps
CATALINA_HOME=$CWD
CATALINA_BASE=$CWD
WORKING_DIR=$(basename $CWD)
set -e
PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=tomcat
DEFAULT=./config.sh
JVM_TMP=/tmp/tomcat-$WORKING_DIR
DESC="Tomcat servlet engine in ${CATALINA_BASE}"
# don't need root privilege
# if [ `id -u` -ne 0 ]; then
# echo "You need root privileges to run this script"
# exit 1
# fi
# Make sure tomcat is started with system locale
if [ -e /etc/default/locale -a -r /etc/default/locale ]; then
. /etc/default/locale
export LANG
elif [ -e /etc/locale.conf -a -r /etc/locale.conf ]; then
. /etc/locale.conf
export LANG
fi
# The following variables can be overwritten in $DEFAULT
# Run Tomcat 8 as this user ID and group ID
# TOMCAT8_USER=tomcat8
# TOMCAT8_GROUP=tomcat8
TOMCAT8_USER=$(whoami)
TOMCAT8_GROUP=$(whoami)
# this is a work-around until there is a suitable runtime replacement
# for dpkg-architecture for arch:all packages
# this function sets the variable JDK_DIRS
# let the user set JAVA_HOME variable, other than guess the JDK dir
if [ -z "${JAVA_HOME-}" ]; then
echo "JAVA_HOME is not defined. exiting....";
exit 1;
else
if [ ! -d $JAVA_HOME ]; then
echo "$JAVA_HOME is not a directory. existing....";
exit 1;
else
if [ ! -f $JAVA_HOME/bin/java ]; then
echo "${JAVA_HOME}/bin/java does not exists. exiting....";
exit 1;
fi
fi
fi
# Use the Java security manager? (yes/no)
TOMCAT8_SECURITY=no
# Default Java options
# Set java.awt.headless=true if JAVA_OPTS is not set so the
# Xalan XSL transformer can work without X11 display on JDK 1.4+
# It also looks like the default heap size of 64M is not enough for most cases
# so the maximum heap size is set to 128M
if [ -z "$JAVA_OPTS" ]; then
JAVA_OPTS="-Djava.awt.headless=true -Xmx128M"
fi
# End of variables that can be overwritten in $DEFAULT
if [ ! -f "$CATALINA_HOME/bin/bootstrap.jar" ]; then
echo "$NAME is not installed"
exit 1
fi
#if [ -z "$CATALINA_TMPDIR" ]; then
CATALINA_TMPDIR="$JVM_TMP"
#fi
# Set the JSP compiler if set in the tomcat8.default file
if [ -n "$JSP_COMPILER" ]; then
JAVA_OPTS="$JAVA_OPTS -Dbuild.compiler=\"$JSP_COMPILER\""
fi
SECURITY=""
if [ "$TOMCAT8_SECURITY" = "yes" ]; then
SECURITY="-security"
fi
# the main purpose of this script is to set the CATALINA_PID
# Define other required variables
# CATALINA_PID="/var/run/$NAME.pid"
CATALINA_PID="$CATALINA_BASE/conf/${NAME}_pid.pid"
CATALINA_SH="$CATALINA_HOME/bin/catalina.sh"
# Look for Java Secure Sockets Extension (JSSE) JARs
if [ -z "${JSSE_HOME}" -a -r "${JAVA_HOME}/jre/lib/jsse.jar" ]; then
JSSE_HOME="${JAVA_HOME}/jre/"
fi
catalina_sh() {
# Escape any double quotes in the value of JAVA_OPTS
JAVA_OPTS="$(echo $JAVA_OPTS | sed 's/\"/\\\"/g')"
AUTHBIND_COMMAND=""
if [ "$AUTHBIND" = "yes" -a "$1" = "start" ]; then
AUTHBIND_COMMAND="/usr/bin/authbind --deep /bin/bash -c "
fi
# Define the command to run Tomcat's catalina.sh as a daemon
# set -a tells sh to export assigned variables to spawned shells.
TOMCAT_SH="set -a; JAVA_HOME=\"$JAVA_HOME\"; \
CATALINA_HOME=\"$CATALINA_HOME\"; \
CATALINA_BASE=\"$CATALINA_BASE\"; \
JAVA_OPTS=\"$JAVA_OPTS\"; \
CATALINA_PID=\"$CATALINA_PID\"; \
CATALINA_TMPDIR=\"$CATALINA_TMPDIR\"; \
LANG=\"$LANG\"; JSSE_HOME=\"$JSSE_HOME\"; \
cd \"$CATALINA_BASE\"; \
\"$CATALINA_SH\" $@"
if [ "$AUTHBIND" = "yes" -a "$1" = "start" ]; then
TOMCAT_SH="'$TOMCAT_SH'"
fi
# Run the catalina.sh script as a daemon
set +e
if [ ! -f "$CATALINA_BASE"/logs/catalina.out ]; then
install -o $TOMCAT8_USER -g adm -m 644 /dev/null "$CATALINA_BASE"/logs/catalina.out
fi
#install -o $TOMCAT8_USER -g adm -m 644 /dev/null "$CATALINA_PID"
cd $CATALINA_BASE
JAVA_HOME=$JAVA_HOME CATALINA_HOME=$CATALINA_HOME CATALINA_BASE=$CATALINA_BASE JAVA_OPTS="$JAVA_OPTS" CATALINA_PID=$CATALINA_PID CATALINA_TMPDIR=$CATALINA_TMPDIR LANG=$LANG JSSE_HOME=$JSSE_HOME $CATALINA_SH $@
status="$?"
set +a -e
return $status
}
case "$1" in
start)
if [ -z "$JAVA_HOME" ]; then
echo "no JDK or JRE found - please set JAVA_HOME"
exit 1
fi
if [ ! -d "$CATALINA_BASE/conf" ]; then
echo "invalid CATALINA_BASE: $CATALINA_BASE"
exit 1
fi
echo "Starting $DESC" "$NAME"
if [ ! -f $CATALINA_PID ]; then
echo "$CATALINA_PID does not exists"
else
xpid=$(cat $CATALINA_PID)
ypid=$(ps ax | grep tomcat | grep $CATALINA_BASE | cut -d " " -f 2)
if [ ! -z $yid ]; then
if [ $xpid = $ypid ]; then
echo "tomcat of $CATALINA_BASE already runnning. existing...";
exit 0;
fi
fi
fi
# Regenerate POLICY_CACHE file
umask 022
# Remove / recreate JVM_TMP directory
rm -rf "$JVM_TMP"
mkdir "$JVM_TMP" || {
echo "could not create JVM temporary directory"
exit 1
}
# chown -h $TOMCAT8_USER "$JVM_TMP"
catalina_sh start $SECURITY
sleep 5
if [ -r $CATALINA_PID ]; then
xpid=$(cat $CATALINA_PID)
# pid is not written into CATALINA_PID file
if [ -z $xpid ]; then
echo "pid is not written into CATALINA_PID file. exiting...."
exit 1;
fi
ypid=$(ps ax | grep tomcat | grep $CATALINA_BASE | cut -d " " -f 2)
if [ ! -z $pid ]; then
echo "ypid is not null"
if [ $xpid != $ypid ]; then
echo "tomcat of $CATALINA_BASE something went wrong, pid from ps and pid from $CATALINA_PID are different.";
exit 1;
fi
fi
fi
;;
stop)
echo "Stopping $DESC" "$NAME"
set +e
if [ -f "$CATALINA_PID" ]; then
catalina_sh stop -force
if [ $? -eq 1 ]; then
echo "$DESC is not running but pid file exists, cleaning up"
elif [ $? -eq 3 ]; then
PID="`cat $CATALINA_PID`"
echo "Failed to stop $NAME pid ${PID} "
exit 1
fi
rm -f "$CATALINA_PID"
rm -rf "$JVM_TMP"
else
echo "tomcat in ${CATALINA_BASE} not running"
fi
set -e
;;
status)
set +e
if [ -r $CATALINA_PID ]; then
xpid=$(cat $CATALINA_PID)
# pid is not written into CATALINA_PID file
if [ -z $xpid ]; then
echo "tomcat of $CATALINA_BASE pid file exists, but empty. exiting...."
exit 1;
fi
ypid=$(ps ax | grep tomcat | grep $CATALINA_BASE | cut -d " " -f 2)
if [ ! -z $pid ]; then
if [ $xpid != $ypid ]; then
echo "tomcat of $CATALINA_BASE something went wrong, pid from ps and pid from $CATALINA_PID are different.";
exit 1;
fi
else
echo "tomcat of $CATALINA_BASE is running with pid `cat $CATALINA_PID`"
fi
else
echo "tomcat of $CATALINA_BASE not runing...."
exit 3
fi
set -e
;;
restart|force-reload)
if [ -f "$CATALINA_PID" ]; then
$0 stop -force
sleep 1
fi
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart|force-reload|status}"
exit 1
;;
esac
exit 0
使用效果
aa@ubuntu:~/projects/bin$ ./xontrol.sh status
tomcat of /home/aa/projects is running with pid 14111
aa@ubuntu:~/projects/bin$ ./xontrol.sh stop
Stopping Tomcat servlet engine in /home/aa/projects tomcat
Using CATALINA_BASE: /home/aa/projects
Using CATALINA_HOME: /home/aa/projects
Using CATALINA_TMPDIR: /tmp/tomcat-projects
Using JRE_HOME: /usr/lib/jvm/java-8-openjdk-amd64
Using CLASSPATH: /home/aa/projects/bin/bootstrap.jar:/home/aa/projects/bin/tomcat-juli.jar
Using CATALINA_PID: /home/aa/projects/conf/tomcat_pid.pid
PID file is empty and has been ignored.
Listening for transport dt_socket at address: 5005
Tomcat stopped.
aa@ubuntu:~/projects/bin$ ./xontrol.sh status
tomcat of /home/aa/projects not runing....
aa@ubuntu:~/projects/bin$ ./xontrol.sh start
Starting Tomcat servlet engine in /home/aa/projects tomcat
/home/aa/projects/conf/tomcat_pid.pid does not exists
Using CATALINA_BASE: /home/aa/projects
Using CATALINA_HOME: /home/aa/projects
Using CATALINA_TMPDIR: /tmp/tomcat-projects
Using JRE_HOME: /usr/lib/jvm/java-8-openjdk-amd64
Using CLASSPATH: /home/aa/projects/bin/bootstrap.jar:/home/aa/projects/bin/tomcat-juli.jar
Using CATALINA_PID: /home/aa/projects/conf/tomcat_pid.pid
Tomcat started.
aa@ubuntu:~/projects/bin$ ./xontrol.sh status
tomcat of /home/aa/projects is running with pid 94702
aa@ubuntu:~/projects/bin$