monit监控-god监控

两个自动化运维的监控软件，留底备用。先记录一下：

god

ruby编写，据说小米在用。

http://godrb.com/

monit

Python编写，正在IDOL系统中试用。

https://mmonit.com/monit/documentation/monit.html

附上monit的配置文件以及exec脚本：

在/monit/etc/monit.d目录下，名称为：服务进程名.monit

check process content-hist-b with pidfile /app/cfg/content-hist-b/content.pid
start program = "/app/etc/init.d/content-hist-b start"
as uid idol and gid users
stop program = "/app/etc/init.d/content-hist-b stop"
as uid idol and gid users
if failed host 127.0.0.1 port 9500 then restart
if 3 restarts within 3 cycles then exec "/usr/local/monit/bin/restart.sh"
as uid idol and gid users

ver1：

#!/bin/bash

Condir=/app/cfg/content-hist-b

Startfile=/app/etc/init.d/content-hist-b

Pid=content-hist-b

echo "D&Gby1900d129" |sudo -S /usr/sbin/sysctl -w vm.drop_caches=3;

count=`pgrep -f $Pid` && echo $count;

if [ -n "$count" ]; then

                sleep 1;
                echo "Prcoess is busy";
                kill -9 $count;
                sleep 60;
                cd $Condir && sh clean.sh && $Startfile restart;     

      else

                echo "Prcoess is stop";
                cd $Condir && sh clean.sh && $Startfile restart;

      fi
exit;

ver2：

#!/bin/bash

Condir=/app/cfg/content-hist-b

Startfile=/app/etc/init.d/content-hist-b

Pid=content-hist-b

sysctl -w vm.drop_caches=3;
count=`pgrep -f $Pid` && echo $count;

if [ -n "$count" ]; then
                sleep 1;
                echo "Prcoess is busy";
                kill -9 $count;
                sleep 30;
                su - idol -c "cd $Condir && sh clean.sh && $Startfile restart";
        else
                echo "Prcoess is stop";
                su - idol -c "cd $Condir && sh clean.sh && $Startfile restart";
               
        fi

exit;

不过使用之后感觉不是很靠谱，所以又写了一份shell判断监控端口连通性，并自动重启的脚本。

如下：

portdd.sh

#!/bin/bash

state="succeeded!"

Condir=/app/cfg/content-shortterm-9000

Startfile=/app/etc/init.d/content-shortterm-9000

Pid=content-shortterm-9000

DATAFILE=/app/data/content-shortterm-9000

DATE=`date +%Y-%m-%d-%H:%M`

while :;
do
count=`pgrep -f $Pid`;
port=$(nc -vz -w 10 192.168.5.137 9000 |awk ‘{print $7}‘);
    if [ "$port"x = "$state"x ]; then
        sleep 1;
        echo "process is ok" ;
    else
       sleep 1;
       echo "Prcoess is bad busy";
       kill -9 $count;
       sleep 60;
       mv $DATAFILE $DATAFILE$DATE;
       su idol -c "cd $Condir && sh clean.sh && $Startfile restart";
       echo "process is restart complete";
    fi

sysctl -w vm.drop_caches=3;
sleep 3600;
done

上面是用netcat命令对端口状态进行监测的，也可以用nmap对端口状态进行监测 “nmap 192.168.155.249 -p 22 | grep 22”，对于没有端口通信的应用进程，还可以用stat命令判断应用进程日志文件的更新时间间隔来进行筛查，并对其进行操作。

原文：http://www.cnblogs.com/evevil/p/5045211.html