写一个service 启动停止你的微服务的命令吧

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篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了写一个service 启动停止你的微服务的命令吧相关的知识,希望对你有一定的参考价值。

  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,贴上来学习下吧)

#!/bin/sh 
# chkconfig: 2345 10 90
# description:tomcat service

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, dont 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="-Dnop"
  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 [ "$1" = "jpda" ] ; then
  if [ -z "$JPDA_TRANSPORT" ]; then
    JPDA_TRANSPORT="dt_socket"
  fi
  if [ -z "$JPDA_ADDRESS" ]; then
    JPDA_ADDRESS="8000"
  fi
  if [ -z "$JPDA_SUSPEND" ]; then
    JPDA_SUSPEND="n"
  fi
  if [ -z "$JPDA_OPTS" ]; then
    JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND"
  fi
  CATALINA_OPTS="$CATALINA_OPTS $JPDA_OPTS"
  shift
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 "[email protected]" 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 "[email protected]" start
    fi
  fi

elif [ "$1" = "run" ]; then

  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="\"$CATALINA_TMPDIR\""       org.apache.catalina.startup.Bootstrap "[email protected]" start
  else
    eval exec "\"$_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 "[email protected]" 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"
  if [ "$1" = "-security" ] ; then
    if [ $have_tty -eq 1 ]; then
      echo "Using Security Manager"
    fi
    shift
    eval "\"$_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="\"$CATALINA_TMPDIR\""       org.apache.catalina.startup.Bootstrap "[email protected]" start       >> "$CATALINA_OUT" 2>&1 "&"

  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:"$CATALINA_BASE"/logs/gc.log       org.apache.catalina.startup.Bootstrap "[email protected]" start "2>&1" | /usr/local/sbin/cronolog -S  "$CATALINA_BASE"/logs/catalina_ln.out "$CATALINA_BASE"/logs/catalina.%Y-%m-%d-%H.out >> /dev/null &

  fi

  if [ ! -z "$CATALINA_PID" ]; then
    echo $! > "$CATALINA_PID"
  fi

  echo "Tomcat started."

elif [ "$1" = "stop" ] ; then

  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 "[email protected]" 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 dont try and force a stop with an empty PID file
              FORCE=0
            else
              echo "The PID file could not be removed or cleared."
            fi
          fi
      ps -ef | grep tomcat | grep -v grep |  awk {print $2} | sed -e "s/^/kill -9 /g"|sh -
          echo "Tomcat stopped."
          break
        fi
        if [ $SLEEP -gt 0 ]; then
          sleep 1
        fi
        if [ $SLEEP -eq 0 ]; then
          if [ $FORCE -eq 0 ]; then
            echo "Tomcat did not stop in time. PID file was not removed. To aid diagnostics a thread dump has been written to standard out."
            kill -3 `cat "$CATALINA_PID"`
          fi
        fi
        SLEEP=`expr $SLEEP - 1 `
      done
    fi
  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=0
                echo "The Tomcat process has been killed."
                break
            fi
            if [ $KILL_SLEEP_INTERVAL -gt 0 ]; then
                sleep 1
            fi
            KILL_SLEEP_INTERVAL=`expr $KILL_SLEEP_INTERVAL - 1 `
        done
        if [ $KILL_SLEEP_INTERVAL -gt 0 ]; then
            echo "Tomcat has not been killed completely yet. The process might be waiting on some system call or might be UNINTERRUPTIBLE."
        fi
      fi
    fi
  fi

elif [ "$1" = "configtest" ] ; then

    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 configtest
    result=$?
    if [ $result -ne 0 ]; then
        echo "Configuration error detected!"
    fi
    exit $result

elif [ "$1" = "version" ] ; then

    "$_RUNJAVA"         -classpath "$CATALINA_HOME/lib/catalina.jar"       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

 

service tomcat start        # 启动
service tomcat stop        # 停止
ps -ef | grep 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/bash 
#chkconfig: 2345 10 90

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/${JAR_NAME}
COMMAND_CRONOLOG=`find /usr -type f -name "cronolog" | sed -n "1p" | tr -d " "`
COMMAND_SS=`find /usr -type f -name "ss" | sed -n "1p" | tr -d " "`
PID_PATH_NAME=/var/run/${JAR_NAME}.pid
START_COMMAND=""
PORT_DEFAULT=""
JMX_PORT=12345

if [ x"$PATH_PWD" == x"$PATH_LOCATION" ];then
    :
else
    echo "script ${JAR_NAME} must be in path ${PATH_LOCATION}!"
    exit 1;
fi


if [ -f ${PATH_TO_JAR} ];then
    :
else
    echo "${JAR_NAME}.jar doesn‘t exist in /www/xx/webapps/${JAR_NAME}/";
    exit 1;
fi

{
    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}/${JAR_NAME}_gc.log             -XX:+HeapDumpOnOutOfMemoryError             -XX:HeapDumpPath=${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:

service ser01 stop    #启动
service ser01 start    #停止
ps -ef | grep 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。

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