Nagios offers monitoring and alerting services for servers, switches applications and services. It alerts users when things go wrong and alerts them a second time when the problem has been resolved.
1.Installing Nagios monitoring on fedora 26
[12:29 root@server /home/cipher]# dnf install nagios nagios-plugins-{ping,disk,users,procs,load,swap,ssh,http}
Last metadata expiration check: 0:10:46 ago on Fri 16 Feb 2018 12:23:13 PM IST.
Dependencies resolved.
2.Nagiosadmin user password creation.
[12:37 root@server /home/cipher]# htpasswd /etc/nagios/passwd nagiosadmin New password: Re-type new password: Updating password for user nagiosadmin
3.Start,enable nagios service
[12:38 root@server /home/cipher]# systemctl start nagios [12:39 root@server /home/cipher]# systemctl enable nagios Created symlink /etc/systemd/system/multi-user.target.wants/nagios.service → /usr/lib/systemd/system/nagios.service. [12:39 root@server /home/cipher]# systemctl status nagios ● nagios.service - Nagios Network Monitoring Loaded: loaded (/usr/lib/systemd/system/nagios.service; enabled; vendor preset: disabled) Active: active (running) since Fri 2018-02-16 12:39:44 IST; 19s ago Docs: https://www.nagios.org/documentation/ Main PID: 5925 (nagios) CGroup: /system.slice/nagios.service ├─5925 /usr/sbin/nagios -d /etc/nagios/nagios.cfg └─5935 /usr/sbin/nagios -d /etc/nagios/nagios.cfg
4.Allow nagios in firewalld
[12:41 root@server /home/cipher]# firewall-cmd --add-service={http,https} --permanent
success
[12:41 root@server /home/cipher]# firewall-cmd --reload
success
5.Access nagios page from
https://127.0.0.1/nagiosadmin user nagiosadmin password xxxxxxx