How to install Munin with Dynamic graphs under CentOS 7

munin-serve-el7.md

How to install Munin with Dynamic graphs under CentOS 7

You'll need to install EPEL.

yum -y install epel-release

Install some packages:

yum -y install munin-node munin-common munin-apache munin-cgi munin httpd

We'll then start munin-node to generate some data for the local host:

systemctl enable munin-node
systemctl start munin-node

Deploy /etc/httpd/munin_cgi_graphs.conf:

<VirtualHost *:80>
    ServerName    localhost
    ServerAdmin   root@localhost
    ErrorLog      /var/log/httpd/munin.localhost-error.log
    CustomLog     /var/log/httpd/munin.localhost-access.log combined
    DocumentRoot  /var/www/html

    # Rewrites for graph/html generated by cgi
    RewriteEngine On
    RewriteRule   ^/munin/static/(.*)  /var/www/html/munin/static/$1  [L]
    RewriteRule   ^/munin/graph/(.*)   /munin-cgi/munin-cgi-graph/$1  [L,PT]
    RewriteRule   ^/munin/(.*)         /munin-cgi/munin-cgi-html/$1   [L,PT]
    RewriteRule   ^/munin$             /munin/                        [R]
    ScriptAlias   /munin-cgi/          /var/www/html/munin/cgi/

    # FastCGI
    <Directory "/var/www/html/munin/cgi">
        Options +ExecCGI
        <IfModule mod_fcgid.c>
            SetHandler fcgid-script
        </IfModule>
        <IfModule !mod_fcgid.c>
            SetHandler cgi-script
        </IfModule>
    </Directory>
</VirtualHost>

Deploy a munin config file to enable collecting of data from the local host:

/etc/munin/conf.d/local.conf:

graph_strategy cgi
html_strategy cgi
cgiurl_graph /munin/graph

[localhost]
      address 127.0.0.1
      use_node_name yes

Finally, restart apache (httpd)

systemctl restart httpd

Wait 5 minutes the open http://<munin-host-ip>/munin (e.g. http://192.168.56.100/munin where 192.168.56.100 is the IP address of the host where we just installed munin)

References:

• munin-monitoring/munin#1071
• https://bugzilla.redhat.com/show_bug.cgi?id=1629438

Tags:

• munin munin-server
• centos redhat centos7 redhat7
• cgi dynamic
• apache httpd