linux服务创建及jq配置服务列表查看

1.应用背景

随着业务需求，后台处理服务不断增多，对于这些服务或后台程序的查看、更新操作越来越凌乱，所以我们首先需要一个服务列表查看工具，方便查看各
服务的端口、运行状态、jar包路径等等。

2.创建服务方式

2.1创建service,通过简单命令start、stop、restart、status管理
      demo:
      创建服务文件：ihr-resumemessdeal 并copy至:/etc/rc.d/init.d

 #!/bin/sh
 #chkconfig:2345 80 05
 #description:ihr-resumemessdeal.jar
 description_txt="*******服务"
 path_txt="/service_resumemessdeal_jar/ihr-resumemessdeal.jar"
 app_command="nohup java -jar /usr/local/ihr-services/service_resumemessdeal_jar/ihr-resumemessdeal.jar > /dev/null 2>&1 &"
 app_pidname="ihr-resumemessdeal.jar"
 pidlist=""
 checkpid(){
    pidlist=`ps -ef|grep $app_pidname|grep -v "grep"|awk '{print $2}'`
 }
 start(){
   echo "$app_pidname 服务准备启动"
   checkpid
   if [ "$pidlist" = "" ]
      then
        su - root -c "$app_command"
        checkpid
        if [ "$pidlist" = "" ]
          then
            echo "$app_pidname 服务启动失败"
          else
            echo "$app_pidname 服务启动成功"
        fi
      else
        echo "$app_pidname 已存在并运行中"
   fi
 }
 stop(){
    checkpid
    if [ "$pidlist" = "" ]
       then
        echo "$app_pidname 服务不存在,或已停止运行"
       else
         kill -9 $pidlist
         checkpid
         if [ "$pidlist" = "" ]
            then
              echo "$app_pidname 服务停止成功"
            else
              echo "$app_pidname 服务停止失败，请重新操作"
         fi
    fi
 }
 restart(){
    stop
    start
 }
 status(){
    checkpid
    if [ "$pidlist" = "" ]
       then
          echo "已停止"
       else
         echo "运行中"
    fi
 }
 description(){
    echo "$description_txt"
 }
 path(){
   echo "$path_txt"
 }
 pidnum(){
     checkpid
   if [ "$pidlist" = "" ]
       then
        echo "无"
       else
        echo "$pidlist"
    fi
 }

 case $1 in
 start)
     start;;
 stop)
     stop;;
 restart)
     restart;;
 status)
     status;;
 description)
     description;;
 path)
     path;;
 pidnum)
     pidnum;;
 *);;
 esac

运行：
      chmod u+x ihr-resumemessdeal
      chkconfig --add ihr-resumemessdeal
      service ihr-resumemessdeal start

测试命令：

2.2直接运行为linux后台程序：（大部分运维都这样做）
       demo:
       nohup java -jar /usr/local/ihr-services/service_resumemessdeal_jar/ihr-resumemessdeal.jar > /dev/null 2>&1 &

3.服务列表管理

3.1针对2.1创建服务列表脚本

uthor:zefeng.guo
servicelist=`chkconfig --list |grep '^ihr-' |awk '{print $1}'`
printf "\033[33m%-26s %-9s %-10s  %-30s %-20s\033[0m\n" 服务名  状态  进程ID 描述  服务路径
for sl in $servicelist
  do
   sta=`service $sl status`
   des=`service $sl description`
   pat=`service $sl path`
   pidn=`service $sl pidnum`
   if [ "$sta" = "空命令" ]
     then
       printf "\033[44m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl $sta $pidn $des $pat
     elif [ "$pidn" = "无" ]
     then
      printf "\033[45m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl $sta $pidn $des $pat
     else
       printf "\033[32m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl ${sta} $pidn $des $pat
   fi
 done

运行如下：

3.2针对2.2 创建服务列表脚本

对于运行于后台得jar包程序查看，我们可以通过jq（linux读取json配置文件）配置获取程序基本信息：

3.2.1 创建服务配置test.json

 [
     {
         "index": 0,
         "name": "ihr-rtfeedbackdeal.jar",
         "desc": "简历转发",
         "dir": "/service_rtfeedbackdeal_jar/ihr-rtfeedbackdeal.jar"
     },
     {
         "index": 1,
         "name": "ihr-resu3333333333.jar",
         "desc": "简历填写",
         "dir": "service_resum3333_jar/ihr-resumem33333.jar"
     },
     {
         "index": 2,
         "name": "ihr-resumemessdeal.jar",
         "desc": "简历反馈",
         "dir": "service_resumemessdeal_jar/ihr-resumemessdeal.jar"
     },
     {
         "index": 3,
         "name": "ihr-aaaaaaaaaa.jar",
         "desc": "简历修改",
         "dir": "service_resumeme11111_jar/ihr-resu111111111.jar"
     },
     {
         "index": 4,
         "name": "ihr-aaaarrrr.jar",
         "desc": "简历回收",
         "dir": "service_resumeme11111_jar/ihr-resu13333.jar"
     }
 ]

3.2.1 读取配置文件并检索程序运行状态：

cd /home/gzf/tools/jq
jqpath="/jq"
testpath="/home/gzf/tools/jq/test.json"
servicenames=`cat $testpath | .$jqpath .[] | .$jqpath .index`
printf "\033[33m%-26s %-9s %-10s  %-30s %-20s\033[0m\n" 服务名  状态  进程ID 描述  服务路径
sl="ihr-"
for sc in $servicenames
  do
     sl=`cat $testpath | .$jqpath .[$sc] | .$jqpath .name`
     sl=${sl//\"/}
     pidn=`ps -ef | grep $sl | grep -v "grep"| awk '{print $2}'`
     des=`cat $testpath | .$jqpath .[$sc] | .$jqpath .desc`
     pat=`cat $testpath | .$jqpath .[$sc] | .$jqpath .dir`
          sta="运行"
      if [ "$pidn" = "空命令" ]
     then
       printf "\033[44m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl $sta $pidn $des $pat
     elif [ "$pidn" = "" ]
     then
      sta="停止"
      pidn="无"
      printf "\033[45m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl $sta $pidn $des $pat
     else
       printf "\033[32m%-23s %-10s %-10s %-30s %-20s\033[0m\n" $sl ${sta} $pidn $des $pat
   fi
 done

运行如下：

3.备注：

知识点：

3.1 nohup命令的用法
    3.2 linux服务的创建
    3.3 jq（linux读取json配置）的用法
    3.4 printf命令的用法