CentOS Stream 9
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Zabbix 6.0 : Add Monitoring Target (CentOS)2022/09/29

Add Monitoring Target Host. Add a CentOS Stream 9 server as an example on here.
[1] Install Zabbix Agent on the server you'd like to add for monitoring target.
[root@node01 ~]#
dnf -y install https://repo.zabbix.com/zabbix/6.0/rhel/9/x86_64/zabbix-release-6.0-3.el9.noarch.rpm

[root@node01 ~]#
dnf -y install zabbix-agent2
[root@node01 ~]#
vi /etc/zabbix/zabbix_agent2.conf
# line 80 : specify Zabbix server

# line 133 : specify Zabbix server

# line 144 : change to your hostname

[root@node01 ~]#
systemctl enable --now zabbix-agent2

[2] If SELinux is enabled, change policy.
[root@node01 ~]#
setsebool -P domain_can_mmap_files on

[root@node01 ~]#
vi zabbix_agent.te
# create new

module zabbix_agent 1.0;

require {
        type initctl_t;
        type zabbix_agent_t;
        type devlog_t;
        type proc_kcore_t;
        type rpm_exec_t;
        type rpm_var_lib_t;
        class fifo_file getattr;
        class sock_file getattr;
        class file { execute execute_no_trans map open getattr };

#============= zabbix_agent_t ==============
allow zabbix_agent_t devlog_t:sock_file getattr;
allow zabbix_agent_t initctl_t:fifo_file getattr;
allow zabbix_agent_t proc_kcore_t:file getattr;
allow zabbix_agent_t rpm_var_lib_t:file open;
allow zabbix_agent_t rpm_exec_t:file { execute execute_no_trans map };

[root@node01 ~]#
checkmodule -m -M -o zabbix_agent.mod zabbix_agent.te

[root@node01 ~]#
semodule_package --outfile zabbix_agent.pp --module zabbix_agent.mod

[root@node01 ~]#
semodule -i zabbix_agent.pp

[3] If Firewalld is running, allow Zabbix related ports.
[root@node01 ~]#
firewall-cmd --add-port=10050/tcp

[root@node01 ~]#
firewall-cmd --runtime-to-permanent

[4] Login to Zabbix admin site with [Admin] user and select [Configuration] - [Hosts] on the left pane, then click [Create Host] button on the right pane.
[5] Input a hostname for [Hostname] field, input any name you like for [Visible name] field, select a group or add a new group for [Groups] field, input IP address and DNS name for [Interfaces] field. For monitoring items, there are many templates, click [Select] button that is in [Templates] field.
[6] Click [Select] button.
[7] Select [Templates/Operating systems].
[8] Select [Template OS Linux by Zabbix agent active].
[9] After setting items, click [Add] button.
[10] New monitoring target host is added. After few minutes, monitoring data are collected like follows.
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