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 <miquels@cistron.nl>.
# Modified for Debian GNU/Linux by Ian Murdock <imurdock@gnu.ai.mit.edu>.
# Modified for Tomcat by Stefan Gybas <sgybas@debian.org>.
# Modified for Tomcat6 by Thierry Carrez <thierry.carrez@ubuntu.com>.
# Modified for Tomcat7 by Ernesto Hernandez-Novich <emhn@itverx.com.ve>.
# Additional improvements by Jason Brittain <jason.brittain@mulesoft.com>.
#
### 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$