写一个shell 快速启动停止你的微服务吧

发布时间：2020-12-15 07:17:25 所属栏目：安全来源：网络整理

导读：在这个微服务盛行的时代，docker获得了巨大的成功，因为我们需要在一台服务器装上N个服务。本文不是想讨论如何使用docker，而是，在一台服务器安装了多个服务后，怎样启动方便的启动服务呢？一、在tomcat的时代中，直接使用tomcat的启动停止命令，轻松搞定

　　在这个微服务盛行的时代，docker获得了巨大的成功，因为我们需要在一台服务器装上N个服务。

　　本文不是想讨论如何使用docker，而是，在一台服务器安装了多个服务后，怎样启动方便的启动服务呢？

一、在tomcat的时代中，直接使用tomcat的启动停止命令，轻松搞定，（tomcat的启动脚本很有水平，感兴趣的点开'+'号查看源码学习下吧）

#!/bin/ JAVA_OPTS="$JAVA_OPTS -server -XX:PermSize=128M -XX:MaxPermSize=512m"
CATALINA_PID=/opt/tomcat7/pid.log
CATALINA_HOME=/opt/tomcat7

OS specific support. $var must be set to either true or false.

cygwin=false
darwin=false
os400=false
case "uname" in
CYGWIN) cygwin=true;;
Darwin) darwin=true;;
OS400*) os400=true;;
esac

resolve links - $0 may be a softlink

PRG="$0"

while [ -h "$PRG" ]; do
ls=ls -ld "$PRG"
link=expr "$ls" : '.*-> (.*)$'
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=dirname "$PRG"/"$link"
fi
done

Get standard environment variables

PRGDIR=dirname "$PRG"

Only set CATALINA_HOME if not already set

[ -z "$CATALINA_HOME" ] && CATALINA_HOME=cd "$PRGDIR/.." >/dev/null; pwd

Copy CATALINA_BASE from CATALINA_HOME if not already set

[ -z "$CATALINA_BASE" ] && CATALINA_BASE="$CATALINA_HOME"

Ensure that any user defined CLASSPATH variables are not used on startup,# but allow them to be specified in setenv.sh,in rare case when it is needed.

CLASSPATH=

if [ -r "$CATALINA_BASE/bin/setenv.sh" ]; then
. "$CATALINA_BASE/bin/setenv.sh"
elif [ -r "$CATALINA_HOME/bin/setenv.sh" ]; then
. "$CATALINA_HOME/bin/setenv.sh"
fi

For Cygwin,ensure paths are in UNIX format before anything is touched

if $cygwin; then
[ -n "$JAVA_HOME" ] && JAVA_HOME=cygpath --unix "$JAVA_HOME"
[ -n "$JRE_HOME" ] && JRE_HOME=cygpath --unix "$JRE_HOME"
[ -n "$CATALINA_HOME" ] && CATALINA_HOME=cygpath --unix "$CATALINA_HOME"
[ -n "$CATALINA_BASE" ] && CATALINA_BASE=cygpath --unix "$CATALINA_BASE"
[ -n "$CLASSPATH" ] && CLASSPATH=cygpath --path --unix "$CLASSPATH"
fi

For OS400

if $os400; then

Set job priority to standard for interactive (interactive - 6) by using

the interactive priority - 6,the helper threads that respond to requests

will be running at the same priority as interactive jobs.

COMMAND='chgjob job('$JOBNAME') runpty(6)'
system $COMMAND

Enable multi threading

export QIBM_MULTI_THREADED=Y
fi

Get standard Java environment variables

if $os400; then

-r will Only work on the os400 if the files are:

1. owned by the user

2. owned by the PRIMARY group of the user

this will not work if the user belongs in secondary groups

. "$CATALINA_HOME"/bin/setclasspath.sh
else
if [ -r "$CATALINA_HOME"/bin/setclasspath.sh ]; then
. "$CATALINA_HOME"/bin/setclasspath.sh
else
echo "Cannot find $CATALINA_HOME/bin/setclasspath.sh"
echo "This file is needed to run this program"
exit 1
fi
fi

Add on extra jar files to CLASSPATH

if [ ! -z "$CLASSPATH" ] ; then
CLASSPATH="$CLASSPATH":
fi
CLASSPATH="$CLASSPATH""$CATALINA_HOME"/bin/bootstrap.jar

if [ -z "$CATALINA_OUT" ] ; then
CATALINA_OUT="$CATALINA_BASE"/logs/catalina.out
fi

if [ -z "$CATALINA_TMPDIR" ] ; then

Define the java.io.tmpdir to use for Catalina

CATALINA_TMPDIR="$CATALINA_BASE"/temp
fi

Add tomcat-juli.jar to classpath

tomcat-juli.jar can be over-ridden per instance

if [ -r "$CATALINA_BASE/bin/tomcat-juli.jar" ] ; then
CLASSPATH=$CLASSPATH:$CATALINA_BASE/bin/tomcat-juli.jar
else
CLASSPATH=$CLASSPATH:$CATALINA_HOME/bin/tomcat-juli.jar
fi

Bugzilla 37848: When no TTY is available,don't output to console

have_tty=0
if [ "tty" != "not a tty" ]; then
have_tty=1
fi

For Cygwin,switch paths to Windows format before running java

if $cygwin; then
JAVA_HOME=cygpath --absolute --windows "$JAVA_HOME"
JRE_HOME=cygpath --absolute --windows "$JRE_HOME"
CATALINA_HOME=cygpath --absolute --windows "$CATALINA_HOME"
CATALINA_BASE=cygpath --absolute --windows "$CATALINA_BASE"
CATALINA_TMPDIR=cygpath --absolute --windows "$CATALINA_TMPDIR"
CLASSPATH=cygpath --path --windows "$CLASSPATH"
JAVA_ENDORSED_DIRS=cygpath --path --windows "$JAVA_ENDORSED_DIRS"
fi

Set juli LogManager config file if it is present and an override has not been issued

if [ -z "$LOGGING_CONFIG" ]; then
if [ -r "$CATALINA_BASE"/conf/logging.properties ]; then
LOGGING_CONFIG="-Djava.util.logging.config.file=$CATALINA_BASE/conf/logging.properties"
else

Bugzilla 45585

LOGGING_CONFIG</span>=<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;-Dnop</span><span style="color: #800000"&gt;"</span>

fi
fi

if [ -z "$LOGGING_MANAGER" ]; then
LOGGING_MANAGER="-Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"
fi

Uncomment the following line to make the umask available when using the

org.apache.catalina.security.SecurityListener

JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask`"

----- Execute The Requested Command -----------------------------------------

Bugzilla 37848: only output this if we have a TTY

if [ $have_tty -eq 1 ]; then
echo "Using CATALINA_BASE: $CATALINA_BASE"
echo "Using CATALINA_HOME: $CATALINA_HOME"
echo "Using CATALINA_TMPDIR: $CATALINA_TMPDIR"
if [ "$1" = "debug" ] ; then
echo "Using JAVA_HOME: $JAVA_HOME"
else
echo "Using JRE_HOME: $JRE_HOME"
fi
echo "Using CLASSPATH: $CLASSPATH"
if [ ! -z "$CATALINA_PID" ]; then
echo "Using CATALINA_PID: $CATALINA_PID"
fi
fi

if [ "$1" = "debug" ] ; then
if $os400; then
echo "Debug command not available on OS400"
exit 1
else
shift
if [ "$1" = "-security" ] ; then
if [ $have_tty -eq 1 ]; then
echo "Using Security Manager"
fi
shift
exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS
-Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH"
-sourcepath "$CATALINA_HOME"/../../java
-Djava.security.manager
-Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy
-Dcatalina.base="$CATALINA_BASE"
-Dcatalina.home="$CATALINA_HOME"
-Djava.io.tmpdir="$CATALINA_TMPDIR"
org.apache.catalina.startup.Bootstrap "$@" start
else
exec "$_RUNJDB" "$LOGGING_CONFIG" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS
-Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH"
-sourcepath "$CATALINA_HOME"/../../java
-Dcatalina.base="$CATALINA_BASE"
-Dcatalina.home="$CATALINA_HOME"
-Djava.io.tmpdir="$CATALINA_TMPDIR"
org.apache.catalina.startup.Bootstrap "$@" start
fi
fi

shift
if [ "$1" = "-security" ] ; then
if [ $have_tty -eq 1 ]; then
echo "Using Security Manager"
fi
shift
eval exec ""$_RUNJAVA"" ""$LOGGING_CONFIG"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS
-Djava.endorsed.dirs=""$JAVA_ENDORSED_DIRS"" -classpath ""$CLASSPATH""
-Djava.security.manager
-Djava.security.policy==""$CATALINA_BASE/conf/catalina.policy""
-Dcatalina.base=""$CATALINA_BASE""
-Dcatalina.home=""$CATALINA_HOME""
-Djava.io.tmpdir=""$CATALINA_TMPDIR""
org.apache.catalina.startup.Bootstrap "$@" start
else
eval exec ""$_RUNJAVA"" ""$LOGGING_CONFIG"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS
-Djava.endorsed.dirs=""$JAVA_ENDORSED_DIRS"" -classpath ""$CLASSPATH""
-Dcatalina.base=""$CATALINA_BASE""
-Dcatalina.home=""$CATALINA_HOME""
-Djava.io.tmpdir=""$CATALINA_TMPDIR""
org.apache.catalina.startup.Bootstrap "$@" start
fi

elif [ "$1" = "start" ] ; then
if [ ! -z "$CATALINA_PID" ]; then
if [ -f "$CATALINA_PID" ]; then
if [ -s "$CATALINA_PID" ]; then
echo "Existing PID file found during start."
if [ -r "$CATALINA_PID" ]; then
PID=cat "$CATALINA_PID"
ps -p $PID >/dev/null 2>&1
if [ $? -eq 0 ] ; then
echo "Tomcat appears to still be running with PID $PID. Start aborted."
exit 1
else
echo "Removing/clearing stale PID file."
rm -f "$CATALINA_PID" >/dev/null 2>&1
if [ $? != 0 ]; then
if [ -w "$CATALINA_PID" ]; then
cat /dev/null > "$CATALINA_PID"
else
echo "Unable to remove or clear stale PID file. Start aborted."
exit 1
fi
fi
fi
else
echo "Unable to read PID file. Start aborted."
exit 1
fi
else
rm -f "$CATALINA_PID" >/dev/null 2>&1
if [ $? != 0 ]; then
if [ ! -w "$CATALINA_PID" ]; then
echo "Unable to remove or write to empty PID file. Start aborted."
exit 1
fi
fi
fi
fi
fi

shift

touch "$CATALINA_OUT"

else
eval ""$_RUNJAVA"" ""$LOGGING_CONFIG"" $LOGGING_MANAGER $JAVA_OPTS $CATALINA_OPTS
-Djava.endorsed.dirs=""$JAVA_ENDORSED_DIRS"" -classpath ""$CLASSPATH""
-Dcatalina.base=""$CATALINA_BASE""
-Dcatalina.home=""$CATALINA_HOME""
-Djava.io.tmpdir=""$CATALINA_TMPDIR""
-XX:+PrintGCDetails
-XX:+PrintGCDateStamps
-XX:+PrintGCTimeStamps
-Xloggc:"$CATALINA_BASE"/logs/gc.log
org.apache.catalina.startup.Bootstrap "$@" start "2>&1" | /usr/local/sbin/cronolog -S "$CATALINA_BASE"/logs/catalina_ln.out "$CATALINA_BASE"/logs/catalina.%Y-%m-%d-%H.out >> /dev/null &

fi

echo "Tomcat started."

shift

SLEEP=5
if [ ! -z "$1" ]; then
echo $1 | grep "[^0-9]" >/dev/null 2>&1
if [ $? -gt 0 ]; then
SLEEP=$1
shift
fi
fi

FORCE=1
if [ "$1" = "-force" ]; then
shift
FORCE=1
fi

if [ ! -z "$CATALINA_PID" ]; then
if [ -f "$CATALINA_PID" ]; then
if [ -s "$CATALINA_PID" ]; then
kill -0 cat "$CATALINA_PID" >/dev/null 2>&1
if [ $? -gt 0 ]; then
echo "PID file found but no matching process was found. Stop aborted."
exit 1
fi
else
echo "PID file is empty and has been ignored."
fi
else
echo "$CATALINA_PID was set but the specified file does not exist. Is Tomcat running? Stop aborted."
exit 1
fi
fi

eval ""$_RUNJAVA"" $LOGGING_MANAGER $JAVA_OPTS
-Djava.endorsed.dirs=""$JAVA_ENDORSED_DIRS"" -classpath ""$CLASSPATH""
-Dcatalina.base=""$CATALINA_BASE""
-Dcatalina.home=""$CATALINA_HOME""
-Djava.io.tmpdir=""$CATALINA_TMPDIR""
org.apache.catalina.startup.Bootstrap "$@" stop

stop failed. Shutdown port disabled? Try a normal kill.

if [ $? != 0 ]; then
if [ ! -z "$CATALINA_PID" ]; then
echo "The stop command failed. Attempting to signal the process to stop through OS signal."
kill -15 cat "$CATALINA_PID" >/dev/null 2>&1
fi
fi

if [ ! -z "$CATALINA_PID" ]; then
if [ -f "$CATALINA_PID" ]; then
while [ $SLEEP -ge 0 ]; do
kill -9 cat "$CATALINA_PID" >/dev/null 2>&1
if [ $? -gt 0 ]; then
rm -f "$CATALINA_PID" >/dev/null 2>&1
if [ $? != 0 ]; then
if [ -w "$CATALINA_PID" ]; then
cat /dev/null > "$CATALINA_PID"

If Tomcat has stopped don't try and force a stop with an empty PID file

          FORCE=<span style="color: #800080"&gt;0</span>
        <span style="color: #0000ff"&gt;else</span>
          <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;The PID file could not be removed or cleared.</span><span style="color: #800000"&gt;"</span>
        <span style="color: #0000ff"&gt;fi</span>
      <span style="color: #0000ff"&gt;fi</span>
  <span style="color: #0000ff"&gt;ps</span> -ef | <span style="color: #0000ff"&gt;grep</span> tomcat | <span style="color: #0000ff"&gt;grep</span> -v <span style="color: #0000ff"&gt;grep</span> |  <span style="color: #0000ff"&gt;awk</span> <span style="color: #800000"&gt;'</span><span style="color: #800000"&gt;{print $2}</span><span style="color: #800000"&gt;'</span> | <span style="color: #0000ff"&gt;sed</span> -e <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;s/^/kill -9 /g</span><span style="color: #800000"&gt;"</span>|<span style="color: #0000ff"&gt;sh</span> -
      <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;Tomcat stopped.</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;
      break
    </span><span style="color: #0000ff"&gt;fi</span>
    <span style="color: #0000ff"&gt;if</span> [ $SLEEP -gt <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
      <span style="color: #0000ff"&gt;sleep</span> <span style="color: #800080"&gt;1</span>
    <span style="color: #0000ff"&gt;fi</span>
    <span style="color: #0000ff"&gt;if</span> [ $SLEEP -eq <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
      <span style="color: #0000ff"&gt;if</span> [ $FORCE -eq <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
        <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;Tomcat did not stop in time. PID file was not removed. To aid diagnostics a thread dump has been written to standard out.</span><span style="color: #800000"&gt;"</span>
        <span style="color: #0000ff"&gt;kill</span> -<span style="color: #800080"&gt;3</span> `<span style="color: #0000ff"&gt;cat</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;$CATALINA_PID</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;`
      </span><span style="color: #0000ff"&gt;fi</span>
    <span style="color: #0000ff"&gt;fi</span><span style="color: #000000"&gt;
    SLEEP</span>=`<span style="color: #0000ff"&gt;expr</span> $SLEEP - <span style="color: #800080"&gt;1</span><span style="color: #000000"&gt; `
  </span><span style="color: #0000ff"&gt;done</span>
<span style="color: #0000ff"&gt;fi</span>

fi

KILL_SLEEP_INTERVAL=5
if [ $FORCE -eq 1 ]; then
if [ -z "$CATALINA_PID" ]; then
echo "Kill failed: $CATALINA_PID not set"
else
if [ -f "$CATALINA_PID" ]; then
PID=cat "$CATALINA_PID"
echo "Killing Tomcat with the PID: $PID"
kill -9 $PID
while [ $KILL_SLEEP_INTERVAL -ge 0 ]; do
kill -0 cat "$CATALINA_PID" >/dev/null 2>&1
if [ $? -gt 0 ]; then
rm -f "$CATALINA_PID" >/dev/null 2>&1
if [ $? != 0 ]; then
if [ -w "$CATALINA_PID" ]; then
cat /dev/null > "$CATALINA_PID"
else
echo "The PID file could not be removed."
fi
fi

Set this to zero else a warning will be issued about the process still running

            KILL_SLEEP_INTERVAL</span>=<span style="color: #800080"&gt;0</span>
            <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;The Tomcat process has been killed.</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;
            break
        </span><span style="color: #0000ff"&gt;fi</span>
        <span style="color: #0000ff"&gt;if</span> [ $KILL_SLEEP_INTERVAL -gt <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
            <span style="color: #0000ff"&gt;sleep</span> <span style="color: #800080"&gt;1</span>
        <span style="color: #0000ff"&gt;fi</span><span style="color: #000000"&gt;
        KILL_SLEEP_INTERVAL</span>=`<span style="color: #0000ff"&gt;expr</span> $KILL_SLEEP_INTERVAL - <span style="color: #800080"&gt;1</span><span style="color: #000000"&gt; `
    </span><span style="color: #0000ff"&gt;done</span>
    <span style="color: #0000ff"&gt;if</span> [ $KILL_SLEEP_INTERVAL -gt <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
        <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;Tomcat has not been killed completely yet. The process might be waiting on some system call or might be UNINTERRUPTIBLE.</span><span style="color: #800000"&gt;"</span>
    <span style="color: #0000ff"&gt;fi</span>
  <span style="color: #0000ff"&gt;fi</span>
<span style="color: #0000ff"&gt;fi</span>

fi

eval </span><span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$_RUNJAVA"</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; $LOGGING_MANAGER $JAVA_OPTS 
  </span>-Djava.endorsed.dirs=<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$JAVA_ENDORSED_DIRS"</span><span style="color: #800000"&gt;"</span> -classpath <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$CLASSPATH"</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; 
  </span>-Dcatalina.base=<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$CATALINA_BASE"</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; 
  </span>-Dcatalina.home=<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$CATALINA_HOME"</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; 
  </span>-Djava.io.tmpdir=<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;"$CATALINA_TMPDIR"</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; 
  org.apache.catalina.startup.Bootstrap configtest
result</span>=$?
<span style="color: #0000ff"&gt;if</span> [ $result -ne <span style="color: #800080"&gt;0</span> ]; <span style="color: #0000ff"&gt;then</span>
    <span style="color: #0000ff"&gt;echo</span> <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;Configuration error detected!</span><span style="color: #800000"&gt;"</span>
<span style="color: #0000ff"&gt;fi</span><span style="color: #000000"&gt;
exit $result

<span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;$_RUNJAVA</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;   
  </span>-classpath <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;$CATALINA_HOME/lib/catalina.jar</span><span style="color: #800000"&gt;"</span><span style="color: #000000"&gt; 
  org.apache.catalina.util.ServerInfo

else

echo "Usage: catalina.sh ( commands ... )"
echo "commands:"
if $os400; then
echo " debug Start Catalina in a debugger (not available on OS400)"
echo " debug -security Debug Catalina with a security manager (not available on OS400)"
else
echo " debug Start Catalina in a debugger"
echo " debug -security Debug Catalina with a security manager"
fi
echo " jpda start Start Catalina under JPDA debugger"
echo " run Start Catalina in the current window"
echo " run -security Start in the current window with security manager"
echo " start Start Catalina in a separate window"
echo " start -security Start in a separate window with security manager"
echo " stop Stop Catalina,waiting up to 5 seconds for the process to end"
echo " stop n Stop Catalina,waiting up to n seconds for the process to end"
echo " stop -force Stop Catalina,wait up to 5 seconds and then use kill -KILL if still running"
echo " stop n -force Stop Catalina,wait up to n seconds and then use kill -KILL if still running"
echo " configtest Run a basic syntax check on server.xml - check exit code for result"
echo " version What version of tomcat are you running?"
echo "Note: Waiting for the process to end and use of the -force option require that $CATALINA_PID is defined"
exit 1

fi

-ef | tomcat # 查看tomcat的运行情况

二、在jar包盛行的时代，需要为各个jar包写一个启动脚本，如下：

#!/bin/ PATH_PWD=$(cd dirname $0;echo pwd)
PATH_LOCATION=/etc/init.d
JAR_NAME=$(basename $0)
PATH_WEBAPPS=/www/xx/webapps
PATH_TO_JAR=${PATH_WEBAPPS}/${JAR_NAME}/${JAR_NAME}.jar
PATH_LOG=/opt/logs/${JAR_NAME}
COMMAND_CRONOLOG=

<span style="color: #0000ff"&gt;find</span> /usr -type f -name <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;cronolog</span><span style="color: #800000"&gt;"</span> | <span style="color: #0000ff"&gt;sed</span> -n <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;1p</span><span style="color: #800000"&gt;"</span> | <span style="color: #0000ff"&gt;tr</span> -d <span style="color: #800000"&gt;"</span> <span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;

COMMAND_SS=

<span style="color: #0000ff"&gt;find</span> /usr -type f -name <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;ss</span><span style="color: #800000"&gt;"</span> | <span style="color: #0000ff"&gt;sed</span> -n <span style="color: #800000"&gt;"</span><span style="color: #800000"&gt;1p</span><span style="color: #800000"&gt;"</span> | <span style="color: #0000ff"&gt;tr</span> -d <span style="color: #800000"&gt;"</span> <span style="color: #800000"&gt;"</span><span style="color: #000000"&gt;

PID_PATH_NAME=/var/run/${JAR_NAME}.pid
START_COMMAND=""
PORT_DEFAULT=""
JMX_PORT=12345

<span style="color: #0000ff">if [ x<span style="color: #800000">"<span style="color: #800000">$PATH_PWD<span style="color: #800000">" == x<span style="color: #800000">"<span style="color: #800000">$PATH_LOCATION<span style="color: #800000">" ];<span style="color: #0000ff">then<span style="color: #000000">
<span style="color: #0000ff">else
<span style="color: #0000ff">echo <span style="color: #800000">"<span style="color: #800000">script ${JAR_NAME} must be in path ${PATH_LOCATION}!<span style="color: #800000">"<span style="color: #000000">
exit <span style="color: #800080">1<span style="color: #000000">;
<span style="color: #0000ff">fi

<span style="color: #0000ff">if [ -f ${PATH_TO_JAR} ];<span style="color: #0000ff">then<span style="color: #000000">
<span style="color: #0000ff">else
<span style="color: #0000ff">echo <span style="color: #800000">"<span style="color: #800000">${JAR_NAME}.jar doesn't exist in /www/xx/webapps/${JAR_NAME}/<span style="color: #800000">"<span style="color: #000000">;
exit <span style="color: #800080">1<span style="color: #000000">;
<span style="color: #0000ff">fi<span style="color: #000000">

{
while :
do
if ${COMMAND_SS} -tln |grep -q ":$JMX_PORT"
then
((JMX_PORT++))
else
echo "jmx port is $JMX_PORT"
break
fi
done
}

service_check(){
if [ -L ${PATH_LOG}/${JAR_NAME}_ln.out ];then
rm -f ${PATH_LOG}/${JAR_NAME}_ln.out &&
echo "${PATH_LOG}/${JAR_NAME}_ln.out has been deleted."
return 0;
fi
}

service_status(){
ps -ef | grep $PATH_TO_JAR | grep -v grep >/dev/null 2>&1
if [ $? -ne 0 ];then
echo "$JAR_NAME is not running."
rm -rf $PID_PATH_NAME
return 1;
else
echo "$JAR_NAME is running."
ps -ef | grep $PATH_TO_JAR | grep -v grep | awk '{print $2}' > $PID_PATH_NAME >/dev/null 2>&1
return 0;
fi

}

service_stop_force(){
ps -ef | grep $PATH_TO_JAR | grep -v grep >/dev/null 2>&1
if [ $? -ne 0 ];then
rm -rf $PID_PATH_NAME
return 0;
else
echo "$JAR_NAME will be killed by force!"
ps -ef | grep $PATH_TO_JAR | grep -v grep | awk '{print $2}' | xargs kill -9 >/dev/null 2>&1
rm -rf $PID_PATH_NAME
return 0;
fi

}

service_start(){
if [ -f $PID_PATH_NAME ]; then
echo "$JAR_NAME is already running"
return 1;
else
echo "$JAR_NAME starting ..."
set -e
nohup java -Dfile.encoding=utf-8
-Xloggc:${PATH_LOG}/${JAR_NAME}_gc.log
　　　　　　-XX:+PrintGCDetails　　
　　　　　　 -XX:+PrintGCTimeStamps
　　　　　　 -XX:+PrintGCDateStamps
-XX:+HeapDumpOnOutOfMemoryError
-XX:HeapDumpPath=${PATH_LOG}
-Xms256m
-Xmx2048m
-Duser.timezone=GMT+08
-jar $PATH_TO_JAR $START_COMMAND $PORT_DEFAULT 2>&1 | $COMMAND_CRONOLOG -S ${PATH_LOG}/${JAR_NAME}_ln.out ${PATH_LOG}/${JAR_NAME}.%Y-%m-%d-%H.out >> /dev/null &
if [ $? -ne 0 ];then
echo "$JAR_NAME started failed"
exit 1
else
echo $! > $PID_PATH_NAME
echo "$JAR_NAME started ..."
fi
set +e
return 0;
fi
}

service_stop(){
if [ -f $PID_PATH_NAME ]; then
echo "$JAR_NAME stoping ..."
ps -ef | grep $PATH_TO_JAR | grep -v grep | awk '{print $2}' | xargs kill -15 >/dev/null 2>&1
echo "$JAR_NAME stopped ..."
rm -rf $PID_PATH_NAME
return 0;
else
echo "$JAR_NAME is not running ..."
return 1;
fi
}

service_tag(){
echo "----------------------------------------------------------------------------------------------------------"
}

service_info(){
service_tag
echo "info-use service ${JAR_NAME} start|stop|status|restart"
echo "info-jar $PATH_TO_JAR"
echo "info-log ${PATH_LOG}/${JAR_NAME}_ln.out"
echo "info-gc-log ${PATH_LOG}/${JAR_NAME}_gc.log"
echo "info-heapdump-log ${PATH_LOG}"
echo "info-memory -Xms256m -Xmx2048m"
service_tag
}

接收命令开始

case "$1" in
"status")
service_tag
service_status
service_info
;;
"start")
service_status >/dev/null 2>&1
service_check
service_start
service_tag
service_status
;;
"stop")
service_status >/dev/null 2>&1
service_tag
service_stop
sleep 3
service_stop_force
;;
"restart")
service_status >/dev/null 2>&1
service_stop
sleep 10
service_stop_force
service_check
service_start
service_tag
service_status
;;
*) echo "Usage: service ${JAR_NAME} status|start|stop|restart" ;;
esac

　　运行脚本：

-ef | java #服务运行情况

　　shell 脚本确实很方便，虽然这会涉及到另一个专业领域的东西，但是自已使用一下也很安逸呢~

　　尤其在排查问题时， shell方面的知识往往会帮自己很大的忙。

　　想要将自己写的脚本添加到service命令中，只需将该脚本移动到 ?/etc/init.d/ 目录下，即可以使用 ?service xxx command 了。

（编辑：李大同）

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