zabbix加入TCP连接数及状态的监控
一 监控原理：
[root@ nginx]# /bin/netstat -an|awk '/^tcp/{++S[$NF]}END{for(a in S) print a,S[a]}'
TIME_WAIT
FIN_WAIT2
ESTABLISHED
LISTEN
可以使用man netstat查看TCP的各种状态信息描述
ESTABLISHED socket已经建立连接
CLOSED socket没有被使用，无连接
CLOSING 服务器端和客户端都同时关闭连接
CLOSE_WAIT 等待关闭连接
TIME_WAIT 表示收到了对方的FIN报文，并发送出了ACK报文，等待2MSL后就可回到CLOSED状态
LAST_ACK 远端关闭，当前socket被动关闭后发送FIN报文，等待对方ACK报文
LISTEN 监听状态
SYN_RECV 接收到SYN报文
SYN_SENT 已经发送SYN报文
FIN_WAIT1 The socket is closed, and the connection is shutting down
FIN_WAIT2 Connection is closed, and the socket is waiting for a shutdown from the remote end.
二 监控脚本：
tcp_conn_status.sh，放在zabbix-agent的应用服务器上/usr/local/zabbix/bin/tcp_conn_status.sh
#!/bin/bash
#this script is used to get tcp and udp connetion status
#tcp status
metric=$
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
else
echo $output
fi
;;
listen)
output=$(awk '/LISTEN/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
synrecv)
output=$(awk '/SYN_RECV/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
synsent)
output=$(awk '/SYN_SENT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
established)
output=$(awk '/ESTABLISHED/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
timewait)
output=$(awk '/TIME_WAIT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
closing)
output=$(awk '/CLOSING/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
closewait)
output=$(awk '/CLOSE_WAIT/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
lastack)
output=$(awk '/LAST_ACK/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
finwait1)
output=$(awk '/FIN_WAIT1/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
finwait2)
output=$(awk '/FIN_WAIT2/{print $2}' $tmp_file)
if [ "$output" == "" ];then
echo
else
echo $output
fi
;;
*)
echo -e "\e[033mUsage: sh $0 [closed|closing|closewait|synrecv|synsent|finwait1|finwait2|listen|established|lastack|timewait]\e[0m" esac
三 zabbix-agent配置
1、修改tcp_conn_status.sh文件权限：
chmod o+x /usr/local/zabbix/bin/tcp_conn_status.sh
2、在/usr/local/zabbix/etc目录下，创建文件tcp-status-params.conf
vi /usr/local/zabbix/etc/tcp-status-params.conf
3、在tcp-status-params.conf加入以下内容：
UserParameter=tcp.status[*],/usr/local/zabbix/bin/tcp_conn_status.sh $1
4、创建日志文件
# vi /tmp/tcp_status.txt
# chown zabbix:zabbix tcp_status.txt
# chmod tcp_status.txt
5、在/usr/local/zabbix/etc/zabbix_agentd.conf加入以下配置：
UserParameter=tcp.status[*],/usr/local/zabbix/bin/tcp_conn_status.sh $
四 重启zabbix-agent服务
/etc/init.d/zabbix_agentd restart
五 添加监控模板
<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export>
<version>2.0</version>
<date>--04T09::57Z</date>
<groups>
<group>
<name>Templates</name>
</group>
</groups>
<templates>
<template>
<template>Template TCP Connection Status</template>
<name>Template TCP Connection Status</name>
<groups>
<group>
<name>Templates</name>
</group>
</groups>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<items>
<item>
<name>CLOSED</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[closed]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>CLOSE_WAIT</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[closewait]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>CLOSING</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[closing]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>ESTABLISHED</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[established]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>FIN_WAIT1</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[finwait1]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>FIN_WAIT2</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[finwait2]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>LAST_ACK</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[lastack]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>LISTEN</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[listen]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>SYN_RECV</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[synrecv]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>SYN_SENT</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[synsent]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
<item>
<name>TIME_WAIT</name>
<type></type>
<snmp_community/>
<multiplier></multiplier>
<snmp_oid/>
<key>tcp.status[timewait]</key>
<delay></delay>
<history></history>
<trends></trends>
<status></status>
<value_type></value_type>
<allowed_hosts/>
<units/>
<delta></delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel></snmpv3_securitylevel>
<snmpv3_authprotocol></snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol></snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula></formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type></data_type>
<authtype></authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link></inventory_link>
<applications>
<application>
<name>TCP Status</name>
</application>
</applications>
<valuemap/>
</item>
</items>
<discovery_rules/>
<macros/>
<templates/>
<screens/>
</template>
</templates>
<triggers>
<trigger>
<expression>{Template TCP Connection Status:tcp.status[timewait].last()}></expression>
<name>There are too many TCP TIME_WAIT status</name>
<url/>
<status></status>
<priority></priority>
<description/>
<type></type>
<dependencies/>
</trigger>
</triggers>
<graphs>
<graph>
<name>TCP Status</name>
<width></width>
<height></height>
<yaxismin>0.0000</yaxismin>
<yaxismax>100.0000</yaxismax>
<show_work_period></show_work_period>
<show_triggers></show_triggers>
<type></type>
<show_legend></show_legend>
<show_3d></show_3d>
<percent_left>0.0000</percent_left>
<percent_right>0.0000</percent_right>
<ymin_type_1></ymin_type_1>
<ymax_type_1></ymax_type_1>
<ymin_item_1></ymin_item_1>
<ymax_item_1></ymax_item_1>
<graph_items>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>C80000</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[closed]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>00C800</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[closewait]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>0000C8</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[closing]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>C800C8</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[established]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>00C8C8</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[finwait1]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>C8C800</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[finwait2]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color>C8C8C8</color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[lastack]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color></color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[listen]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color></color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[synrecv]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color></color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[synsent]</key>
</item>
</graph_item>
<graph_item>
<sortorder></sortorder>
<drawtype></drawtype>
<color></color>
<yaxisside></yaxisside>
<calc_fnc></calc_fnc>
<type></type>
<item>
<host>Template TCP Connection Status</host>
<key>tcp.status[timewait]</key>
</item>
</graph_item>
</graph_items>
</graph>
</graphs>
</zabbix_export>
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