zabbix_linux_plugin.sh

#!/bin/bash
############################################################
# $Name:         zabbix_linux_plugins.sh
# $Version:      v1.0
# $Function:     zabbix plugins
# $Author:       Jeson Li
# $organization: www.lzbbg.cn
# $Create Date:  2017-03-10
# $Mail:         libobin@tom.com
# $Description:  Monitor Linux Service Status
############################################################
tcp_status_fun(){
    TCP_STAT=$1
    #netstat -n | awk '/^tcp/ {++state[$NF]} END {for(key in state) print key,state[key]}' > /tmp/netstat.tmp
    ss -ant | awk 'NR>1 {++s[$1]} END {for(k in s) print k,s[k]}' > /tmp/netstat.tmp
    TCP_STAT_VALUE=$(grep "$TCP_STAT" /tmp/netstat.tmp | cut -d ' ' -f2)
    if [ -z $TCP_STAT_VALUE ];then
        TCP_STAT_VALUE=0
    fi
    echo $TCP_STAT_VALUE
}

nginx_status_fun(){
    NGINX_PORT=$1
    NGINX_COMMAND=$2
    nginx_active(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Active' | awk '{print $NF}'
        }
    nginx_reading(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Reading' | awk '{print $2}'
       }
    nginx_writing(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Writing' | awk '{print $4}'
       }
    nginx_waiting(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| grep 'Waiting' | awk '{print $6}'
       }
    nginx_accepts(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $1}'
       }
    nginx_handled(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $2}'
       }
    nginx_requests(){
        /usr/bin/curl "http://127.0.0.1:"$NGINX_PORT"/nginx_status/" 2>/dev/null| awk NR==3 | awk '{print $3}'
       }
      case $NGINX_COMMAND in
        active)
            nginx_active;
            ;;
        reading)
            nginx_reading;
            ;;
        writing)
            nginx_writing;
            ;;
        waiting)
            nginx_waiting;
            ;;
        accepts)
            nginx_accepts;
            ;;
        handled)
            nginx_handled;
            ;;
        requests)
            nginx_requests;
        esac 
}

memcached_status_fun(){
    M_PORT=$1
    M_COMMAND=$2
    echo -e "stats\nquit" | nc 127.0.0.1 "$M_PORT" | grep "STAT $M_COMMAND " | awk '{print $3}'
}

redis_status_fun(){
    R_PORT=$1
    R_COMMAND=$2
    (echo -en "INFO \r\n";sleep 1;) | nc 127.0.0.1 "$R_PORT" > /tmp/redis_"$R_PORT".tmp
    REDIS_STAT_VALUE=$(grep ""$R_COMMAND":" /tmp/redis_"$R_PORT".tmp | cut -d ':' -f2)
     echo $REDIS_STAT_VALUE    
}

main(){
    case $1 in
        tcp_status)
            tcp_status_fun $2;
            ;;
        nginx_status)
            nginx_status_fun $2 $3;
            ;;
        memcached_status)
            memcached_status_fun $2 $3;
            ;;
        redis_status)
            redis_status_fun $2 $3;
            ;;
        *)
            echo $"Usage: $0 {tcp_status key|memcached_status key|redis_status key|nginx_status key}"
    esac
}

main $1 $2 $3