1. Use the command to view the TCP connection status
(1) in the past used command: netstat -antp
[root@ansible-control zabbix]# netstat -antp Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:10050 0.0.0.0:* LISTEN 19285/zabbix_agentd tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 1620/mysqld tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 815/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 7887/nginx: master tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1948/dnsmasq tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1169/sshd tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 1171/cupsd tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1691/master tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 12527/sshd: root@pt tcp 0 0 127.0.0.1:6011 0.0.0.0:* LISTEN 16970/sshd: root@pt
(2) is now commonly used commands: ss -antp
[root@ansible-control zabbix]# ss -antp
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 128 *:10050 *:* users:(("zabbix_agentd",pid=19290,fd=4),("zabbix_agentd",pid=19289,fd=4),("zabbix_agentd",pid=19288,fd=4),("zabbix_agentd",pid=19287,fd=4),("zabbix_agentd",pid=19286,fd=4),("zabbix_agentd",pid=19285,fd=4))
LISTEN 0 50 *:3306 *:* users:(("mysqld",pid=1620,fd=14))
LISTEN 0 128 *:111 *:* users:(("rpcbind",pid=815,fd=8))
LISTEN 0 128 *:80 *:* users:(("nginx",pid=7888,fd=6),("nginx",pid=7887,fd=6))
LISTEN 0 5 192.168.122.1:53 *:* users:(("dnsmasq",pid=1948,fd=6))
LISTEN 0 128 *:22 *:*
2. Write monitor script ideas
AWK obtain status information using the first column:
[root@ansible-control zabbix]# ss -antp | awk '{print $1}'
State
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
LISTEN
TIME-WAIT
TIME-WAIT
TIME-WAIT
3. Modify the monitoring client hosts file is /etc/zabbix/zabbix_agentd.conf
UserParameter=tcp.status[*],ss -antp | awk '{a[$$1]++}END{print a["'$1'"]}'
4. zabbix-server end of the test can be successfully acquired client information
[root@zabbix-server-center /]# zabbix_get -s 192.168.10.100 -p 10050 -k 'tcp.status[LISTEN]' 17 [root@zabbix-server-center /]# zabbix_get -s 192.168.10.100 -p 10050 -k 'tcp.status[TIME-WAIT]' 96
5. Create a template and view graphic
