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Implementation of ZABBIX agent active mode

2022-07-04 07:13:00 【A rookie who has been studying hard】

Zabbix agent Implementation of active mode

Active mode consists of zabbix agent Active direction zabbix server Of 10051 Port initiation TCP Connection request . Therefore, active mode must be in zabbix agent Specified in the configuration file zabbix server Of IP Or host name （ Must be able to be resolved to IP Address ）, Connecting to zabbix server Before ,zabbix agent I don't know what data I want to collect and how often I collect data , And then connect to zabbix server Get it later zabbix agent Monitoring items and data collection intervals , Then collect data according to the monitoring items and return it to zabbix server. In active mode... Is no longer required zabbix server towards zabbix agent Initiate connection request , therefore , Active mode can alleviate zabbix server Number of open local random ports and processes , To some extent, it can alleviate zabbix server Load pressure .

Environmental preparation

Four machines ：

zabbix_agent 5.0 Passive mode （ already installed ） Zabbix_java_gateway 5.0 （ already installed ） 10.0.0.7

zabbix_server 5.0（ already installed ） 10.0.0.17

Tomcat-8.5（ already installed ） 10.0.0.27

zabbix_agent 5.0 Active mode 10.0.0.37

Close the firewall and selinux

# close selinux
[[email protected] ~]#sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config

# Turn off firewall 
[[email protected] ~]#systemctl disable --now firewalld

# Restart and take effect 
[[email protected] ~]#reboot

1. install zabbix rpm Source

[[email protected] ~]#rpm -Uvh https://mirrors.aliyun.com/zabbix/zabbix/5.0/rhel/7/x86_64/zabbix-release-5.0-1.el7.noarch.rpm
[[email protected] ~]#sed -i 's#http://repo.zabbix.com#https://mirrors.aliyun.com/zabbix#' /etc/yum.repos.d/zabbix.repo
[[email protected] ~]#yum clean all

2. install zabbix agent

[[email protected] ~]#yum install -y zabbix-agent

# Edit profile  /etc/yum.repos.d/zabbix.repo
[[email protected] ~]#vim /etc/yum.repos.d/zabbix.repo
[zabbix-frontend]
...
enabled=1
...

3. modify zabbix agent The configuration file

[[email protected] ~]#vim /etc/zabbix/zabbix_agentd.conf
Server=10.0.0.17  
ListenPort=10050
ListenIP=0.0.0.0
StartAgents=5  
ServerActive=10.0.0.17  # Active mode zabbix server Address 
Hostname=10.0.0.37
Timeout=30

[[email protected] ~]#grep "^[a-Z]" /etc/zabbix/zabbix_agentd.conf
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
Server=10.0.0.17
ListenPort=10050
ListenIP=0.0.0.0
StartAgents=5
ServerActive=10.0.0.17
Hostname=10.0.0.37
Timeout=30
Include=/etc/zabbix/zabbix_agentd.d/*.conf

4. start-up Zabbix agent process

# start-up Zabbix agent process , And set the power on self start 
[[email protected] ~]#systemctl restart zabbix-agent.service
[[email protected] ~]#systemctl enable zabbix-agent.service
[[email protected] ~]#systemctl status zabbix-agent.service
● zabbix-agent.service - Zabbix Agent
   Loaded: loaded (/usr/lib/systemd/system/zabbix-agent.service; enabled; vendor preset: disabled)
   Active: active (running) since Sat 2022-07-02 19:12:04 CST; 18s ago
 Main PID: 1755 (zabbix_agentd)
   CGroup: /system.slice/zabbix-agent.service
           ├─1755 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
           ├─1756 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
           ├─1757 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
           ├─1758 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
           ├─1759 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
           ├─1760 /usr/sbin/zabbix_agentd: listener #4 [waiting for connection]
           ├─1761 /usr/sbin/zabbix_agentd: listener #5 [waiting for connection]
           └─1762 /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]

Jul 02 19:12:04 centos7 systemd[1]: Starting Zabbix Agent...
Jul 02 19:12:04 centos7 systemd[1]: Started Zabbix Agent.

# verification Zabbix agent Whether the process exists 
[[email protected] ~]#ss -ntlp
State      Recv-Q Send-Q              Local Address:Port                             Peer Address:Port
LISTEN     0      128                             *:10050                                       *:*users:(("zabbix_agentd",pid=1762,fd=4),("zabbix_agentd",pid=1761,fd=4),("zabbix_agentd",pid=1760,fd=4),("zabbix_agentd",pid=1759,fd=4),("zabbix_agentd",pid=1758,fd=4),("zabbix_agentd",pid=1757,fd=4),("zabbix_agentd",pid=1756,fd=4),("zabbix_agentd",pid=1755,fd=4))
LISTEN     0      128                             *:22                                          *:*users:(("sshd",pid=1298,fd=3))
LISTEN     0      100                     127.0.0.1:25                                          *:*users:(("master",pid=1461,fd=13))
LISTEN     0      128                          [::]:22                                       [::]:*users:(("sshd",pid=1298,fd=4))
LISTEN     0      100                         [::1]:25                                       [::]:*users:(("master",pid=1461,fd=14))

[[email protected] ~]#ps -ef | grep zabbix_agentd
zabbix     1755      1  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd -c /etc/zabbix/zabbix_agentd.conf
zabbix     1756   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: collector [idle 1 sec]
zabbix     1757   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: listener #1 [waiting for connection]
zabbix     1758   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: listener #2 [waiting for connection]
zabbix     1759   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: listener #3 [waiting for connection]
zabbix     1760   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: listener #4 [waiting for connection]
zabbix     1761   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: listener #5 [waiting for connection]
zabbix     1762   1755  0 19:12 ?        00:00:00 /usr/sbin/zabbix_agentd: active checks #1 [idle 1 sec]
root       1788   1565  0 19:14 pts/0    00:00:00 grep --color=auto zabbix_agentd

5. Generate active mode template

Click on 【 To configure - host -10.0.0.7-web1- clone 】 Insert picture description here

Insert picture description here

6. Verify active mode host status

#【ZBX】 green , Indicates that the host is available , Monitoring indicator check succeeded

Insert picture description here

7. Verify the active mode host port

[[email protected]_server ~]#netstat -tanlp | grep 10.0.0.37
tcp        0      0 10.0.0.17:10051         10.0.0.37:43072         TIME_WAIT   -
tcp        0      0 10.0.0.17:10051         10.0.0.37:43062         TIME_WAIT   -
tcp        0      0 10.0.0.17:10051         10.0.0.37:43070         TIME_WAIT   -
tcp        0      0 10.0.0.17:10051         10.0.0.37:43068         TIME_WAIT   -
tcp        0      0 10.0.0.17:10051         10.0.0.37:43066         TIME_WAIT   -
tcp        0      0 10.0.0.17:10051         10.0.0.37:43064         TIME_WAIT   -