zabbix5.0监控tcp连接数

本文基于Centos7系统，zabbix5.0验证通过，理论适用于其他版本。

本文不适用于纯小白，一点都不懂的不建议直接尝试！

1、在zabbix-agent主机上添加脚本

vi /etc/zabbix/tcp_connections.sh

1	vi /etc/zabbix/tcp_connections.sh

#!/bin/bash
stat() {
    netstat -an | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
}
case $1 in
    LAST_ACK)
    stat | grep 'LAST_ACK' | awk '{print $2}'
    ;;
    LISTEN)
    stat | grep 'LISTEN' | awk '{print $2}'
    ;;
    SYN_RECV)
    stat | grep 'SYN_RECV' | awk '{print $2}'
    ;;
    ESTABLISHED)
    stat | grep 'ESTABLISHED' | awk '{print $2}'
    ;;
    FIN_WAIT1)
    stat | grep 'FIN_WAIT1' | awk '{print $2}'
    ;;
    FIN_WAIT2)
    stat | grep 'FIN_WAIT2' | awk '{print $2}'
    ;;
    CLOSING)
    stat | grep 'CLOSING' | awk '{print $2}'
    ;;
    TIME_WAIT)
    stat | grep 'TIME_WAIT' | awk '{print $2}'
    ;;
    *)
    echo "Usage: LAST_ACK LISTEN SYN_RECV ESTABLISHED FIN_WAIT1 FIN_WAIT2 SYN_SENT CLOSING TIME_WAIT"
    ;;
esac

#!/bin/bash

stat() {

netstat -an | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

}

case $1 in

LAST_ACK)

stat | grep 'LAST_ACK' | awk '{print $2}'

;;

LISTEN)

stat | grep 'LISTEN' | awk '{print $2}'

;;

SYN_RECV)

stat | grep 'SYN_RECV' | awk '{print $2}'

;;

ESTABLISHED)

stat | grep 'ESTABLISHED' | awk '{print $2}'

;;

FIN_WAIT1)

stat | grep 'FIN_WAIT1' | awk '{print $2}'

;;

FIN_WAIT2)

stat | grep 'FIN_WAIT2' | awk '{print $2}'

;;

CLOSING)

stat | grep 'CLOSING' | awk '{print $2}'

;;

TIME_WAIT)

stat | grep 'TIME_WAIT' | awk '{print $2}'

;;

echo "Usage: LAST_ACK LISTEN SYN_RECV ESTABLISHED FIN_WAIT1 FIN_WAIT2 SYN_SENT CLOSING TIME_WAIT"

;;

esac

2、给予执行权限

chmod +x /etc/zabbix/tcp_connections.sh

1	chmod +x /etc/zabbix/tcp_connections.sh

3、测试脚本

/etc/zabbix/tcp_connections.sh TIME_WAIT

1	/etc/zabbix/tcp_connections.sh TIME_WAIT

4、添加zabbix配置文件

vi /etc/zabbix/zabbix_agentd.d/userparameter_tcp_connections.conf

1	vi /etc/zabbix/zabbix_agentd.d/userparameter_tcp_connections.conf

#/etc/zabbix/tcp_connections.sh
UserParameter=tcp.last_ack,/etc/zabbix/tcp_connections.sh LAST_ACK
UserParameter=tcp.listen,/etc/zabbix/tcp_connections.sh LISTEN
UserParameter=tcp.syn_recv,/etc/zabbix/tcp_connections.sh SYN_RECV
UserParameter=tcp.established,/etc/zabbix/tcp_connections.sh ESTABLISHED
UserParameter=tcp.fin_wait1,/etc/zabbix/tcp_connections.sh FIN_WAIT1
UserParameter=tcp.fin_wait2,/etc/zabbix/tcp_connections.sh FIN_WAIT2
UserParameter=tcp.closing,/etc/zabbix/tcp_connections.sh CLOSING
UserParameter=tcp.time_wait,/etc/zabbix/tcp_connections.sh TIME_WAIT