zabbix如何监控tcp连接数

参考http://john88wang.blog.51cto.com/2165294/1586234/
tcp各个状态的意思：
ESTABLISHED socket已经建立连接CLOSED socket没有被使用，无连接
CLOSING 服务器端和客户端都同时关闭连接CLOSE_WAIT 等待关闭连接TIME_WAIT The socket is waiting after close to handle packets still in the network. 表示收到了对方的FIN报文，并发送出了ACK报文，等待2MSL后就可回到CLOSED状态LAST_ACK The remote end has shut down, and the socket is closed. Waiting for acknowledgement. 远端关闭，当前socket被动关闭后发送FIN报文，等待对方ACK报文LISTEN 监听状态SYN_RECV 接收到SYN报文SYN_SENT 已经发送SYN报文FIN_WAIT1 The socket is closed, and the connection is shutting downFIN_WAIT2 Connection is closed, and the socket is waiting for a shutdown from the remote end.
1 搭建环境：zabbix server :centos 6 ip 192.168.234.134 zabbix client (nginx) :centos 7 ip:192.168.234.133
2 监控方法：第一种监控方法用ss

/usr/sbin/ss state all | awk '{++S[$1]} END {for (a in S) {printf "%11-s %s\n",a,S[a]}}'
LISTEN      9
ESTAB       1
State       1
TIME-WAIT   110

第二种监控方法用netstat

/bin/netstat -an|awk '/^tcp/{++S[$NF]}END{for(a in S) print a,S[a]}'
LISTEN 9
ESTABLISHED 1
SYN_SENT 1
TIME_WAIT 126

3 监控脚本编写
vi /usr/local/zabbix/scripts/tcp.sh

#!/bin/bash
#this script is used to get tcp and udp connetion status
#tcp status
metric=$1
tmp_file=/tmp/tcp_status.txt
/bin/netstat -an|awk '/^tcp/{++S[$NF]}END{for(a in S) print a,S[a]}' > $tmp_file

case $metric in
closed)
output=$(awk '/CLOSED/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
listen)
output=$(awk '/LISTEN/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
synrecv)
output=$(awk '/SYN_RECV/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
synsent)
output=$(awk '/SYN_SENT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
established)
output=$(awk '/ESTABLISHED/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
timewait)
output=$(awk '/TIME_WAIT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
closing)
output=$(awk '/CLOSING/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
closewait)
output=$(awk '/CLOSE_WAIT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
lastack)
output=$(awk '/LAST_ACK/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
finwait1)
output=$(awk '/FIN_WAIT1/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
finwait2)
output=$(awk '/FIN_WAIT2/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo 0
else
echo $output
fi
;;
*)
echo -e "\e[033mUsage: sh  $0 [closed|closing|closewait|synrecv|synsent|finwait1|finwait2|listen|established|lastack|timewait]\e[0m"

esac

4添加zabbix客户端配置文件

vi /usr/local/zabbix/etc/zabbix_agentd.conf 添加
UserParameter=tcp.status[*],/usr/local/zabbix/scripts/tcp.sh $1

然后重启agentd服务

5 测试链接
zabbix_get -s 192.168.234.133 -p 10055 -k tcp.status[timewait]

6 倒入模板，确认出图




附件：http://down.51cto.com/data/2367746