之前对tcp的监控采用netstat命令，发现在服务器繁忙的时候效果不理想，这个命令占用大量的cpu有时候高达90%以上，可能会导致业务的不稳定，所以改用ss命令对脚本进行优化
对tcp连接数和状态的监控意义主要有以下几点：
1.可以观察服务器的压力分布(连接数大于5W的时候可能系统会有一定的压力，可以考虑加服务器)
2.如果服务器的连接数突然变得极小(比如100以下)，可能是业务系统故障导致在线用户被踢出
创建文件夹
mkdir -p /usr/local/zabbix-agent/scripts/
mkdir -p /etc/zabbix/zabbix_agentd.d/
vim /usr/local/zabbix-agent/scripts/tcp_status_ss.sh
#!/bin/bash
#scripts for tcp status
function SYNRECV {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'SYN-RECV' | awk '{print $2}'
}
function ESTAB {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'ESTAB' | awk '{print $2}'
}
function FINWAIT1 {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'FIN-WAIT-1' | awk '{print $2}'
}
function FINWAIT2 {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'FIN-WAIT-2' | awk '{print $2}'
}
function TIMEWAIT {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'TIME-WAIT' | awk '{print $2}'
}
function LASTACK {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'LAST-ACK' | awk '{print $2}'
}
function LISTEN {
/usr/sbin/ss -ant | awk '{++s[$1]} END {for(k in s) print k,s[k]}' | grep 'LISTEN' | awk '{print $2}'
}
$1
或者
function SYNRECV {
/usr/sbin/ss -s | grep 'synrecv' | awk '{print $2}'
}
function ESTAB {
/usr/sbin/ss -s | grep 'estab' | awk '{print $2}'
}
function FINWAIT1 {
/usr/sbin/ss -o | grep 'FIN-WAIT-1'|wc -l
}
function FINWAIT2 {
/usr/sbin/ss -ant| grep 'FIN-WAIT-2' | wc -l
}
function TIMEWAIT {
/usr/sbin/ss -ant | grep 'TIME-WAIT' | wc -l
}
function LASTACK {
/usr/sbin/ss -ant | grep 'LAST-ACK' | wc -l
}
function LISTEN {
/usr/sbin/ss -ant | grep 'LISTEN' | wc -l
}
$1赋予脚本执行权限
chmod +x /usr/local/zabbix-agent/scripts/tcp_status_ss.sh
二、填写key值：当然大家在加入key值之后最好再服务器上面去执行看有没有返回值：
vim /etc/zabbix/zabbix_agentd.d/tcp_status_ss.conf
#monitor tcp
UserParameter=tcp[*],/usr/local/zabbix-agent/scripts/tcp_status_ss.sh $1
重启agent
service zabbix-agent restart
zabbix-server服务端测试
zabbix_get -s 192.168.3.18 -p 10050 -k "tcp[LISTEN]"
zabbix_get -s 192.168.3.18 -p 20050 -k "tcp[LISTEN]"
22
zabbix web端配置：
登录Zabbix3.0 的web界面，一次选择 Configuration > Templates,在主界面的右上角有个 Import 按钮，用来导入模板
模板文件：
zbx_tcp_status.xml
<?xml version="1.0" encoding="UTF-8"?>
<zabbix_export>
<version>3.0</version>
<date>2016-10-20T10:07:50Z</date>
<groups>
<group>
<name>Templates</name>
</group>
</groups>
<templates>
<template>
<template>Templates tcp status ss</template>
<name>Templates tcp status ss</name>
<description/>
<groups>
<group>
<name>Templates</name>
</group>
</groups>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<items>
<item>
<name>tcp ESTAB</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[ESTAB]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp fin_wait1</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[FINWAIT1]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp fin_wait2</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[FINWAIT2]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp last_ack</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[LASTACK]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp listen</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[LISTEN]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp syn_recv</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[SYNRECV]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
<item>
<name>tcp timewait</name>
<type>0</type>
<snmp_community/>
<multiplier>0</multiplier>
<snmp_oid/>
<key>tcp[TIMEWAIT]</key>
<delay>30</delay>
<history>90</history>
<trends>365</trends>
<status>0</status>
<value_type>3</value_type>
<allowed_hosts/>
<units/>
<delta>0</delta>
<snmpv3_contextname/>
<snmpv3_securityname/>
<snmpv3_securitylevel>0</snmpv3_securitylevel>
<snmpv3_authprotocol>0</snmpv3_authprotocol>
<snmpv3_authpassphrase/>
<snmpv3_privprotocol>0</snmpv3_privprotocol>
<snmpv3_privpassphrase/>
<formula>1</formula>
<delay_flex/>
<params/>
<ipmi_sensor/>
<data_type>0</data_type>
<authtype>0</authtype>
<username/>
<password/>
<publickey/>
<privatekey/>
<port/>
<description/>
<inventory_link>0</inventory_link>
<applications>
<application>
<name>tcp status</name>
</application>
</applications>
<valuemap/>
<logtimefmt/>
</item>
</items>
<discovery_rules/>
<macros/>
<templates/>
<screens/>
</template>
</templates>
<graphs>
<graph>
<name>linux tcp status</name>
<width>900</width>
<height>200</height>
<yaxismin>0.0000</yaxismin>
<yaxismax>100.0000</yaxismax>
<show_work_period>1</show_work_period>
<show_triggers>1</show_triggers>
<type>0</type>
<show_legend>1</show_legend>
<show_3d>0</show_3d>
<percent_left>0.0000</percent_left>
<percent_right>0.0000</percent_right>
<ymin_type_1>0</ymin_type_1>
<ymax_type_1>0</ymax_type_1>
<ymin_item_1>0</ymin_item_1>
<ymax_item_1>0</ymax_item_1>
<graph_items>
<graph_item>
<sortorder>0</sortorder>
<drawtype>0</drawtype>
<color>1A7C11</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[ESTAB]</key>
</item>
</graph_item>
<graph_item>
<sortorder>1</sortorder>
<drawtype>0</drawtype>
<color>F63100</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[FINWAIT1]</key>
</item>
</graph_item>
<graph_item>
<sortorder>2</sortorder>
<drawtype>0</drawtype>
<color>2774A4</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[FINWAIT2]</key>
</item>
</graph_item>
<graph_item>
<sortorder>3</sortorder>
<drawtype>0</drawtype>
<color>A54F10</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[LASTACK]</key>
</item>
</graph_item>
<graph_item>
<sortorder>4</sortorder>
<drawtype>0</drawtype>
<color>FC6EA3</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[LISTEN]</key>
</item>
</graph_item>
<graph_item>
<sortorder>5</sortorder>
<drawtype>0</drawtype>
<color>6C59DC</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[SYNRECV]</key>
</item>
</graph_item>
<graph_item>
<sortorder>6</sortorder>
<drawtype>0</drawtype>
<color>AC8C14</color>
<yaxisside>0</yaxisside>
<calc_fnc>2</calc_fnc>
<type>0</type>
<item>
<host>Templates tcp status ss</host>
<key>tcp[TIMEWAIT]</key>
</item>
</graph_item>
</graph_items>
</graph>
</graphs>
</zabbix_export>