Linux service scripting

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#!/bin/bash# # # BEGIN INIT INFO# provides: App developer# Required-start: $all# required-stop: $all# Default-start:2 3 4 5# default-stop:0 1 6# Short-description: Short Application Description# Description: Detailed Application Description# # # END INIT INFO# Program Files directoryroot="/work/code/cusflo-server-moon"# Program Filesapp="./dog/client_update_dog.py"# program configuration fileconfig="./server_config.ini"# Service Logdefault_log_file='./daodaoliang.log '# Style CustomizationRed="\\e[31m"green="\\e[32m"yellow="\\e[33m"black="\\e[0m"pos="\\e[60g"ok_msg () {Echo- e "${1}${pos}${black}[${green} OK ${black}]" }failed_msg () {Echo- e "${1}${pos}${black}[${red}failed${black}]" }# Load Process info of app# exist return 0# no exist return 1Load_process_info () {# get PIDapp_pid=$ (Ps-ef|grep${app}|gawk ' $!~/grep/{print $} ' |tr- s ' \ n ' ) # Check PID againPs-p${app_pid} >/dev/null 2>/dev/nullRet=$?;if [[0 -ne $ret]]; Then error_msg=,"process $app _pid does not exists"; return 1; fi return 0;}start () {# if exists, exit.Load_process_infoif [[0 -eq $?]]; Then failed_msg "${app} started (PID ${app_pid}), should not start it again."; return 0; fi # NOT EXISTS, start serverOk_msg"Starting ${app} ..." # get log fileLog_file= 'CD ${root} && cat ${config} |grep ' ^log_file ' | awk ' {print $} ' | awk-f '; ' ' {print '} ' if [[-Z $log _file]]; Then log_file=${default_log_file}; fi # Get ABS pathLog_dir= ' DirName$log _file 'Log_file= ' (CD ${root} && cd $log _dir && pwd) '/' basename $log _file ' # TODO: fixme:set limit by, for instance, "ULIMIT-HSN 10000" if [[-Z $log _file]]; Then(cd ${root};nohup python ${app} >/dev/null 2>&1 &) Else(cd ${root};nohup python ${app} >/dev.null >> $log _file 2>&1 &) fi# Check again after start serverFor ((i = 0; i < 5; i++)); Do# Sleep A little while, the for app could start then crash.Sleep 0.1load_process_inforet=$?;if [[0 -ne $ret]]; ThenFailed_msg"${app} start failed"; Failed_msg"See $log _file"; return $ret; fi Done# Check whether started.Load_process_inforet=$?;if [[0 -eq $?]]; Then ok_msg "${app} started (PID ${app_pid})"; return 0; fi Failed_msg"${app} not started" return $ret }Stop () {# Not start, exitLoad_process_infoif [[0 -ne $?]]; Then failed_msg "${app} not start."; return 0; fi Ok_msg"Stopping ${app} (PID ${app_pid}) ..." # Process exists, try to kill to stop normallyFor ((i=0;i<30;i++)); DoLoad_process_infoif [[0 -eq $?]]; ThenKill- s SIGTERM ${app_pid} 2>/dev/null Ret=$?;if [[0 -ne $ret]]; Then failed_msg "Send signal SIGTERM failed ret=$ret"; return $ret; fi Sleep 0.1ElseOk_msg"${app} stopped by SIGTERM" # Delete The PID file when stop success.Rm- f ${pid_file} Break ;fi Done# process exists, use kill-9 to force to exitLoad_process_infoif [[0 -eq $?]]; ThenKill- s SIGKILL ${app_pid} 2>/dev/null Ret=$?;if [[0 -ne $ret]]; Then failed_msg "Send signal SIGKILL failed ret=$ret"; return $ret; fi Ok_msg"${app} stopped by SIGKILL" Else# Delete The PID file when stop success.Rm- f ${pid_file} fiSleep 0.1return 0}# Get the status of the SRS process# @return 0 if SRS is running; otherwise, 1 for stopped.status () {Load_process_inforet=$?;if [[0 -eq $ret]]; then echo '${app} (PID ${app_pid}) is running. "; return 0; fi echo "${app} is stopped, $error _msg" return 1}menu () {case "$" inStart) Start; stop) stop;; restart) Stopstart;; status) status; *)echo "Usage: $ {start|stop|status|restart}" return 1;;Esac} menu $Code=$?exit ${code}

http://daodaoliang.com/linux%E5%AD%A6%E4%B9%A0/2015/02/04/linux%E5%AD%A6%E4%B9%A0-2015-02-04-%E6%9C%8D%E5%8A% a1%e8%84%9a%e6%9c%ac%e7%bc%96%e5%86%99/

Linux service scripting