Instalar Munin para monitorear el estado del sistema

[1]	Install and start Apache httpd, refer to here.
[2]	Install Munin server. Also Install Munin agent to monitor Munin server itself.

# install from EPEL [root@dlp ~]#  yum --enablerepo=epel -y install munin munin-node

[3]	Configure Munin.

[root@dlp ~]#  vi /etc/munin/munin.conf # line 98: change to your own hostname [ dlp.server.world ]     address 127.0.0.1     use_node_name yes [root@dlp ~]#  vi /etc/httpd/conf.d/munin.conf # near line 16: add access permission Order Deny,Allow Deny from all Allow from 127.0.0.1 10.0.0.0/24 [root@dlp ~]#  systemctl restart httpd # add a user ( create a new file with "-c" ) [root@dlp ~]#  htpasswd -c /etc/munin/munin-htpasswd cent  New password:  # set password Re-type new password:  Adding password for user cent

[4]	Configure Munin node as a monitoring target.

[root@dlp ~]#  vi /etc/munin/munin-node.conf # line 37: change to your own hostname host_name  dlp.server.world [root@dlp ~]#  systemctl start munin-node  [root@dlp ~]#  systemctl enable munin-node

[5]	Access to the "http://(Munin server's hostname or IP address)/munin/" from a client which is in the network allowed in config. Then, authentication is required, input a username and password you set in [3] and proceed next.

[6]	After sucessing authentication, the index page is displayed. It's possible to see graphs to click a hostname.