【zabbix个性化监控之一】TCP连接数

一、在被监控端上设置

主要命令：

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

输出内容：

TIME_WAIT 100

CLOSE_WAIT 5

FIN_WAIT1 6

ESTABLISHED 161

SYN_RECV 1

LAST_ACK 1

LISTEN 11

下面以监控TIME_WAIT的数量为例子（先来准备下脚本）

mkdir -pv /usr/local/shell/zabbix

cd /usr/local/shell/zabbix

vim tcp_connections.sh

#!/bin/bash

netstat -an | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}' | grep $1| cut -d’ ‘ -f2

//脚本依赖上面的主要命令

在zabbix_server被监控的节点上编辑zabbix的配置文件

1	vim /usr/local/zabbix/etc/zabbix_agentd.conf

#在256行添加下列内容

UnsafeUserParameters=1

#在265行添加以下内容

UserParameter=TIME_WAIT,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh TIME_WAIT

重启客户端

1	servicezabbix_agentd restart

二、zabbix_server 端设置

首先看是否能否取到值

cd/usr/local/zabbix/bin

./zabbix_get-s10.6.5.1 -k TIME_WAIT

如果能获取到数值，那么恭喜你成功了。

访问zabbix web界面，创建模板

创

建图形

将模板应用到对应的机器上，绘图结果如下：

到此，zabbix自定义监控某主机的tcp连接数搞定。

#!/bin/bash
sed -i "s#\# UnsafeUserParameters=0#UnsafeUserParameters=1#g" /usr/local/etc/zabbix_agentd.conf
echo "Include=/usr/local/etc/zabbix_agentd.conf.d/" >>/usr/local/etc/zabbix_agentd.conf
mkdir -p /usr/local/shell/zabbix

cat << EOF >/usr/local/shell/zabbix/tcp_connections.sh
#!/bin/bash
netstat -an |awk '/^tcp/ {++S[\$NF]} END {for(a in S) print a, S[a]}'|grep \$1|cut -d' ' -f2
EOF

cat << EOF >/usr/local/shell/zabbix/zabbix_tcp.sh
#!/bin/bash
netstat -s|grep "connections established"|awk '{print\$1}'
EOF
chmod 755 /usr/local/shell/zabbix/zabbix_tcp.sh

mkdir -p /usr/local/etc/zabbix_agentd.conf.d

cat << EOF >/usr/local/etc/zabbix_agentd.conf.d/tcp
#!monitor tcp
UserParameter=TIME_WAIT,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh TIME_WAIT
UserParameter=CLOSE_WAIT,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh CLOSE_WAIT
UserParameter=ESTABLISHED,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh ESTABLISHED
UserParameter=FIN_WAIT1,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh FIN_WAIT1
UserParameter=LAST_ACK,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh LAST_ACK
UserParameter=LISTEN,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh LISTEN
UserParameter=SYN_RECV,/bin/bash /usr/local/shell/zabbix/tcp_connections.sh SYN_RECV
UserParameter=tcpconnect,/usr/local/shell/zabbix/zabbix_tcp.sh

EOF

service zabbix_agentd restart