服务器服务监测脚本

由于最近一直在弄服务器，所以一直没有带来Arch Linux的东西，这篇文章给出的脚本依旧是为服务器准备的。写shell多了，C都快忘了怎么写了，这样不好啊……

公司的服务器经常莫名其妙就挂，ssh上去又是好的，看看进程发现服务根本没打开，为什么呢？服务器被重启了！我的前任留下一个check.sh脚本，用来监测apache等进程，脚本在监测到进程过多时就重启服务器，结果有些服务器没有设置好开机启动那些apache之类的，就悲剧了。我就重新写了一个脚本，代替了crontab中原来的check.sh，在进程过多时不是重启服务器而是重启服务，这下服务器正常多了，网站那边负责的朝我喊“XXXX网站挂了，什么问题？”少了，哈哈。

废话多了点，脚本如下，使用前请一定看清代码并且修改其中一些路径之类的东西，以确保不会在你的服务器上造成什么不必要的伤害。

#!/bin/bash
# service --> name to test
# apache --> apache|apache2|http|httpd
# nginx --> nginx
# mysql --> mysql|mysqld
# php-cgi --> php-cgi
# vsftpd --> vsftp|vsftpd
# pure-ftpd --> pure-ftp|pure-ftpd
# apache-tomcat --> java
# Set the service name you want to test and its max number of processes first.
# Don't forget to check the bin path for each service.
# By Chen Zhidong
# http://sillydong.com

# This is a special one for the apache path is /usr/sbin

SERVICE="apache2 mysqld vsftpd"
SERVICE_MAX=(35 5 5)

LOGPATH="/root"
#APACHE_PATH="/usr/sbin"
#MYSQL_PATH="/usr/local/mysql"
#NGINX_PATH="/usr/local/nginx"
#PHP_PATH="/usr/local/php"
#TOMCAT_PATH="/usr/local/apache-tomcat-6.0.26"
#PURE_PATH="/usr/local/pureftpd"
i=0

if [ -e $LOGPATH/restart.log ]
then
  tail -n 10 $LOGPATH/restart.log > $LOGPATH/restart.tmp
  rm -rf $LOGPATH/restart.log
  mv $LOGPATH/restat.tmp $LOGPATH/restart.log
fi

for serv in $SERVICE
do
  #echo "$serv"
  #echo "$i"
  #echo "${SERVICE_MAX[i]}"

  counter=0
  counter=`ps -A | grep "$serv" | wc -l`
  #echo "$counter"
  
  if [ $counter -eq 0 ];then
        echo "$serv is off at $(date), starting..." >> $LOGPATH/restart.log
        case $serv in
            apache*|http*)
                #echo "apache start"
        $APACHE_PATH/bin/apachectl restart >> $LOGPATH/restart.log
                ;;
            nginx)
                #echo "nginx start"
                $NGINX_PATH/sbin/nginx -s reopen >> $LOGPATH/restart.log
                ;;
            mysql*)
                #echo "mysql start"
        if [ -e /etc/init.d/mysqld ];
                then
          /etc/init.d/mysqld restart >> $LOGPATH/restart.log
        else
          /etc/init.d/mysql restart >> $LOGPATH/restart.log
        fi
                ;;
            php-cgi)
                #echo "php-cgi start"
                $PHP_PATH/sbin/php-fpm restart >> $LOGPATH/restart.log
                ;;
            vsftp*)
                #echo "vsftpd start"
                /etc/init.d/vsftpd restart >> $LOGPATH/restart.log
                ;;
            pure-ftp*)
                #echo "pureftpd start"
        $PURE_PATH/sbin/pure-ftpd -B >> $LOGPATH/restart.log
                ;;
            java*)   #apache-tomcat
                #echo "tomcat start"
        $TOMCAT_PATH/bin/startup.sh >> $LOGPATH/restart.log
                ;;
            *)
                echo "Wrong service name while starting..." >> $LOGPATH/restart.log
                ;;
        esac
  else
    echo "$serv is on at $(date), next service..." >> $LOGPATH/restart.log
    fi

    if [ $counter -gt ${SERVICE_MAX[i]} ];then
        echo "$(date), too many $serv, needs to restart..." >> $LOGPATH/restart.log
        case $serv in
            apache*|http*)
                #echo "apache restart"
        $APACHE_PATH/bin/apachectl restart >> $LOGPATH/restart.log
                ;;
            nginx)
                #echo "nginx restart"
                $NGINX_PATH/sbin/nginx -s reload >> $LOGPATH/restart.log
                ;;
            mysql*)
                #echo "mysql restart"
        if [ -e /etc/init.d/mysqld ];
                then
          /etc/init.d/mysqld restart >> $LOGPATH/restart.log
        else
          /etc/init.d/mysql restart >> $LOGPATH/restart.log
        fi
                ;;
            php-cgi)
                #echo "php-cgi restart"
                $PHP_PATH/sbin/php-fpm restart >> $LOGPATH/restart.log
                ;;
            vsftp*)
                #echo "vsftpd restart"
                /etc/init.d/vsftp* restart >> $LOGPATH/restart.log
                ;;
            pure-ftp*)
                #echo "pureftpd restart"
        $PURE_PATH/sbin/pure-ftpd -B >> $LOGPATH/restart.log
                ;;
            java*)   #apache-tomcat
                #echo "tomcat restart"
        $TOMCAT_PATH/bin/startup.sh >> $LOGPATH/restart.log
                ;;
            *)
                echo "Warning: Wrong service name while restartiing..."  >> $LOGPATH/restart.log
                ;;
        esac
    fi
  
    let "i++"
done

exit 0

#End