Zabbix monitoring the number of TCP connections for Linux and Windows

Linux:

The commands for manually obtaining TCP connections on Linux are:

netstat -an|awk  '/^tcp/{++s[$NF]}end{for (A in S)  print a,s[a]} ' #ESTABLISHED        socket has established a connection    #CLOSED             socket not used, no connection    #CLOSING             both the server side and the client both close the connection    #CLOSE_WAIT           waiting to close the connection    #TIME_WAIT            said that it received the fin message and sent an ACK message, waiting for 2MSL to return to closed status    #LAST_ACK             remote shutdown, current socket passive shutdown after sending fin message, waiting for each other ACK message    #LISTEN               monitoring status    #SYN_RECV             receive SYN messages    #SYN_SENT             has sent a SYN message 

To edit a configuration file on the zabbix_agent side:

vi/etc/zabbix/zabbix_agentd.confinclude=/etc/zabbix/zabbix_agentd.d/

#编写一个获取tcp状态的脚本:mkdir /etc/zabbix/zabbix_agentd.d/script    #此处注意, you must not put the script directly to/etc/zabbix/ zabbix_agentd.d/directory, otherwise zabbix_agent will take it as its own configuration file execution, causing the restart is unsuccessful Vi /etc/zabbix/zabbix_agentd.d/script/tcp_ Status.sh#!/bin/bash#this script is get tcp statusmetric=$1tmp_file=/tmp/tcp_ status.txt/bin/netstat -an|awk  '/^tcp/{++s[$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     &Nbsp;       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

#赋予脚本可执行权限chmod +x/

To write a custom key on zabbix_agent:

Vi/etc/zabbix/zabbix_agentd.confuserparameter=tcp.status[*],/etc/zabbix/zabbix_agentd.d/script/tcp_status.sh $

Restart Zabbix_agent:

/etc/init.d/zabbix_agent restart

The value returned by the test input parameter on the server side:

Zabbix_get-s 118.190.114.140-p 10050-k Tcp.status[listen]

Finally on the Zabbix to create monitoring items and triggers, attachments upload an attachment, which is the tcp_status template, directly in the configuration-template-Import.

Windows:

The command to manually obtain the number of TCP connections on Windows is:

This article from "Wang Jiadong elder brother" blog, declined reprint!

Zabbix monitoring the number of TCP connections for Linux and Windows