Fedora Tomcat5 service 分析

/etc/init.d/tomcat5:

#!/bin/bash
#
# tomcat5 This shell script takes care of starting and stopping Tomcat
#
# chkconfig: - 80 20
#
### BEGIN INIT INFO
# Provides: tomcat5
# Required-Start: $network $syslog
# Required-Stop: $network $syslog
# Default-Start:
# Default-Stop:
# Description: Release implementation for Servlet 2.4 and JSP 2.0
# Short-Description: start and stop tomcat
### END INIT INFO
#
# - originally written by Henri Gomez, Keith Irwin, and Nicolas Mailhot
# - heavily rewritten by Deepak Bhole and Jason Corley
#
if [ -r /lib/lsb/init-functions ]; then
. /lib/lsb/init-functions
else
exit 1
fi
NAME="$(basename $0)"
unset ISBOOT
if [ "${NAME:0:1}" = "S" -o "${NAME:0:1}" = "K" ]; then
NAME="${NAME:3}"
ISBOOT="1"
fi
# For SELinux we need to use 'runuser' not 'su'
if [ -x "/sbin/runuser" ]; then
SU="/sbin/runuser"
else
SU="su"
fi
# Get the tomcat config (use this for environment specific settings)
TOMCAT_CFG="/etc/tomcat5/tomcat5.conf "
if [ -r "$TOMCAT_CFG" ]; then
. ${TOMCAT_CFG}
fi
# Get instance specific config file
if [ -r "/etc/sysconfig/${NAME}" ]; then
. /etc/sysconfig/${NAME}
fi
if [ -z "${CATALINA_BASE}" ]; then
CATALINA_BASE="${CATALINA_HOME}"
fi
# Define which connector port to use
CONNECTOR_PORT="${CONNECTOR_PORT:-8080
}"
# Path to the tomcat launch script
TOMCAT_SCRIPT="/usr/bin/dtomcat5"
# Path to the script that will refresh jar symlinks on startup
TOMCAT_RELINK_SCRIPT="${CATALINA_HOME}/bin/relink"
# Tomcat program name
TOMCAT_PROG="$NAME"
# Define the tomcat username
TOMCAT_USER="${TOMCAT_USER:-tomcat}"
# Define the tomcat log file
TOMCAT_LOG="${TOMCAT_LOG:-/var/log/tomcat5/catalina.out}"
RETVAL="0"
function checkpid() {
local i
for i in $* ; do
if [ -d "/proc/${i}" ]; then
return 0
fi
done
return 1
}
# Look for open ports, as the function name might imply
function findFreePorts() {
local isSet1="false"
local isSet2="false"
local isSet3="false"
local lower="8000"
randomPort1="0"
randomPort2="0"
randomPort3="0"
local -a listeners="( $(
netstat -ntl | \
awk '/^tcp/ {gsub("(.)*:", "", $4); print $4}'
) )"
while [ "$isSet1" = "false" ] || \
[ "$isSet2" = "false" ] || \
[ "$isSet3" = "false" ]; do
let port="${lower}+${RANDOM:0:4}"
if [ -z `expr " ${listeners[*]} " : ".*$ $port $.*"` ]; then
if [ "$isSet1" = "false" ]; then
export randomPort1="$port"
isSet1="true"
elif [ "$isSet2" = "false" ]; then
export randomPort2="$port"
isSet2="true"
elif [ "$isSet3" = "false" ]; then
export randomPort3="$port"
isSet3="true"
fi
fi
done
}
function makeHomeDir() {
SAVE_UMASK=$(umask)
umask 022
if [ ! -d "${CATALINA_HOME}" ]; then
echo "${CATALINA_HOME} does not exist, creating"
if [ ! -d "/var/lib/${NAME}" ]; then
mkdir -p /var/lib/${NAME}
cp -pR /var/lib/tomcat5/* /var/lib/${NAME}
fi
mkdir -p ${CATALINA_HOME} ${CATALINA_HOME}/conf /var/cache/${NAME}/temp \
/var/cache/${NAME}/work /var/log/${NAME}
for i in temp work; do
ln -fs /var/cache/${NAME}/${i} ${CATALINA_HOME}/${i}
done
for i in common server shared webapps; do
ln -fs /var/lib/${NAME}/${i} ${CATALINA_HOME}/${i}
done
ln -fs /var/log/${NAME} ${CATALINA_HOME}/logs
cp -pLR /etc/tomcat5/* ${CATALINA_HOME}/conf/
cp -pLR /usr/share/tomcat5/bin ${CATALINA_HOME}
cp -pLR /var/cache/tomcat5/work/* ${CATALINA_HOME}/work/
chown ${TOMCAT_USER}:${TOMCAT_USER} /var/log/${NAME}
fi
umask ${SAVE_UMASK}
}
function parseOptions() {
options=""
options="$options $(
awk '!/^#/ && !/^$/ { ORS=" "; print "export ", $0, ";" }' \
$TOMCAT_CFG
)"
if [ -r "/etc/sysconfig/${NAME}" ]; then
options="$options $(
awk '!/^#/ && !/^$/ { ORS=" ";
print "export ", $0, ";" }' \
/etc/sysconfig/${NAME}
)"
fi
TOMCAT_SCRIPT="$options $TOMCAT_SCRIPT"
}
# See how we were called.
function start() {
echo -n "Starting ${TOMCAT_PROG}: "
if [ -f "/var/lock/subsys/${NAME}" ] ; then
if [ -f "/var/run/${NAME}.pid" ]; then
read kpid < /var/run/${NAME}.pid
if checkpid $kpid 2>&1; then
echo "$NAME process already running"
return -1
else
echo "lock file found but no process running for"
echo "pid $kpid, continuing"
fi
fi
fi
export CATALINA_PID="/var/run/${NAME}.pid"
touch $CATALINA_PID
chown ${TOMCAT_USER}:${TOMCAT_USER} $CATALINA_PID
if [ "$CATALINA_HOME" != "/usr/share/tomcat5" ]; then
# Create a tomcat directory if it doesn't exist
makeHomeDir
# If CATALINA_HOME doesn't exist modify port number so that
# multiple instances don't interfere with each other
findFreePorts
sed -i -e "s/8005/${randomPort1}/g" -e "s/8080/${CONNECTOR_PORT}/g" \
-e "s/8009/${randomPort2}/g" -e "s/8443/${randomPort3}/g" \
${CATALINA_HOME}/conf/server.xml
fi
touch $TOMCAT_LOG
chown ${TOMCAT_USER}:${TOMCAT_USER} $TOMCAT_LOG
if [ "$RELINK" = "yes" ]; then
$TOMCAT_RELINK_SCRIPT
fi
$SU - $TOMCAT_USER -c "$TOMCAT_SCRIPT start" >> $TOMCAT_LOG 2>&1
RETVAL="$?"
if [ "$RETVAL" -eq 0 ]; then
log_success_msg
touch /var/lock/subsys/${NAME}
else
log_failure_msg
fi
#echo
return $RETVAL
}
function status() {
RETVAL="1"
if [ -f "/var/run/${NAME}.pid" ]; then
read kpid < /var/run/${NAME}.pid
if checkpid $kpid 2>&1; then
echo "$0 is already running (${kpid})"
RETVAL="0"
else
echo "lock file found but no process running for pid $kpid"
fi
else
pid="$(pgrep -u ${TOMCAT_USER} -G ${TOMCAT_USER} java)"
if [ -n "$pid" ]; then
echo "$0 running (${pid}) but no PID file exists"
RETVAL="0"
else
echo "$0 is stopped"
fi
fi
return $RETVAL
}
function stop() {
local STOP_VERBOSE="false"
echo -n "Stopping $TOMCAT_PROG: "
if [ -f "/var/lock/subsys/${NAME}" ]; then
$SU - $TOMCAT_USER -c "$TOMCAT_SCRIPT stop" >> $TOMCAT_LOG 2>&1
RETVAL="$?"
if [ "$RETVAL" -eq "0" ]; then
count="0"
if [ -f "/var/run/${NAME}.pid" ]; then
read kpid < /var/run/${NAME}.pid
until [ "$(ps --pid $kpid | grep -c $kpid)" -eq "0" ] || \
[ "$count" -gt "$SHUTDOWN_WAIT" ]; do
if [ "$STOP_VERBOSE" = "true" ]; then
echo -n -e "\nwaiting for processes $kpid to exit"
fi
sleep 1
let count="${count}+1"
done
if [ "$count" -gt "$SHUTDOWN_WAIT" ]; then
if [ "$STOP_VERBOSE" = "true" ]; then
echo -n -e "\nkilling processes which didn't stop"
echo -n -e "after "
echo -n "$SHUTDOWN_WAIT seconds"
fi
kill -9 $kpid
fi
if [ "$STOP_VERBOSE" = "true" -a "$count" -gt "0" ]; then
echo -n -e "\n"
fi
log_success_msg
else
log_failure_msg
fi
rm -f /var/lock/subsys/$NAME /var/run/$NAME.pid
else
log_failure_msg
fi
else
log_failure_msg
fi
#echo
}
# See how we were called.
case "$1" in
start)
parseOptions
start
;;
stop)
parseOptions
stop
;;
restart)
parseOptions
stop
sleep 2
start
;;
condrestart|try-restart)
if [ -f "/var/run/${NAME}.pid" ]; then
parseOptions
stop
start
fi
;;
reload)
RETVAL="3"
;;
force-reload)
if [ -f "/var/run/${NAME}.pid" ]; then
stop
start
fi
;;
status)
status
;;
version)
parseOptions
"${JAVA_HOME}/bin/java" \
-classpath "${CATALINA_HOME}/server/lib/[tomcat5][catalina].jar" \
org.apache.catalina.util.ServerInfo
;;
*)
echo "Usage: $TOMCAT_PROG {start|stop|restart|condrestart|try-restart|reload|force-reload|status|version}"
exit 1
esac
exit $RETVAL

/etc/tomcat5/tomcat5.conf:

# System-wide configuration file for tomcat5 services
# This will be sourced by tomcat5 and any secondary service
# Values will be overridden by service-specific configuration
# files in /etc/sysconfig
# Use this one to change default values for all services
# Change the service specific ones to affect only one service
# (see, for instance, /etc/sysconfig/tomcat5)
#
# tomcat5 service configuration file
# you could also override JAVA_HOME here
# Where your java installation lives
JAVA_HOME="/usr/lib/jvm/java-1.6.0"
# Where your tomcat installation lives
# That change from spanvious RPM where TOMCAT_HOME
# used to be /var/tomcat.
# Now /var/tomcat will be the base for webapps only
CATALINA_HOME="/usr/share/tomcat5"
JASPER_HOME="/usr/share/tomcat5"
CATALINA_TMPDIR="/usr/share/tomcat5/temp"
JAVA_ENDORSED_DIRS="/usr/share/tomcat5/common/endorsed"
# You can pass some parameters to java
# here if you wish to
#JAVA_OPTS="-Xminf0.1 -Xmaxf0.3"
# Use JAVA_OPTS to set java.library.path for libtcnative.so
#JAVA_OPTS="-Djava.library.path=/usr/lib64"
# Bug 190:
# https://www.jpackage.org/bugzilla/show_bug.cgi?id=190
# System property catalina.ext.dirs should be set to its default value
# for ExtensionValidator to be functional.
JAVA_OPTS="$JAVA_OPTS -Dcatalina.ext.dirs=$CATALINA_HOME/shared/lib:$CATALINA_HOME/common/lib"
# What user should run tomcat
TOMCAT_USER="tomcat"
# You can change your tomcat locale here
#LANG=en_US
# Time to wait in seconds, before killing process
SHUTDOWN_WAIT=30
# Set the TOMCAT_PID location
CATALINA_PID=/var/run/tomcat5.pid
# Connector port is 8080 for this tomcat5 instance
#CONNECTOR_PORT=8080
# Change to yes if you want the tomcat init script to run the relink script
RELINK="no"
# If you wish to further customize your tomcat environment,
# put your own definitions here
# (i.e. LD_LIBRARY_PATH for some jdbc drivers)
# Just do not forget to export them :)

/etc/tomcat5/tomcat5.conf:

# Service-specific
configuration file for tomcat5 services
# This will be sourced by the SysV service script after the global
# configuration file /etc/tomcat5/tomcat5.conf, thus allowing values
# to be overridden on a per-service way
#
# NEVER change the init script itself:
# To change values for all services make your changes in
# /etc/tomcat5/tomcat5.conf
# To change values
for a specific service, change it here
# To create a new service
, create a link
from /etc/init.d/ to
# /etc/init.d/tomcat5 (do not copy the init script) and make a copy
of the
# /etc/sysconfig/tomcat5 file to /etc/sysconfig/ and change
# the property values so the two services won't conflict
# Register the new service in the system as usual (see chkconfig and similars)
#

Fedora Tomcat5 service 分析

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