How to monitor your server’s resource usage with Munin on CentOS 6
Munin is a networked resource monitoring tool that can help analyze resource usage of servers and services. It has a master/slave architecture in which the master connects to all the slaves at regular intervals and asks them for data.
It is written in perl and is very fast and robust monitoring tool.
Before proceeding any further, initiate a screen session by executing:
## screen -U -S munin-screen
Then, make sure your CentOS VPS is fully up-to-date by executing:
## yum update
Next, we assume you already have the LAMP Stack up and working on your Linux VPS. If not, please proceed with our article on how to install LAMP (Linux, Apache, MySQL and PHP) on CentOS 6
Since Munin is available as a package in the EPEL repository, we are going to add EPEL to our CentOS 6 VPS using the following commands:
## wget -P /tmp http://mirror.itc.virginia.edu/fedora-epel/6/x86_64/epel-release-6-8.noarch.rpm ## rpm -Uvh /tmp/epel-release-6-8.noarch.rpm ## rm -f /tmp/epel-release-6-8.noarch.rpm
Install Munin using the command below:
## yum install munin*
Proceed with editing Munin’s configuration file. Make sure you add/edit the following:
## vim /etc/munin/munin.conf dbdir /var/lib/munin htmldir /var/www/html/munin logdir /var/log/munin rundir /var/run/munin tmpldir /etc/munin/templates includedir /etc/munin/conf.d graph_strategy cron cgiurl_graph /munin-cgi/munin-cgi-graph html_strategy cron [localhost] address 127.0.0.1 use_node_name yes
add user to munin using
htpasswd by running:
## htpasswd -c /etc/munin/munin-htpasswd administrator
ommit the ‘-c’ argument if adding additional users.
restart apache and munin using the following commands:
## service munin-node restart ## service httpd restart
finally, access your munin at http://$your_ip and login using ‘administrator’ as username and your administrator’s password as password
Of course, if you are one of our Linux VPS Hosting customers, you don’t have to do any of this, simply ask our admins, sit back and relax. Our admins will set this up for you immediately.
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