Munin-Network Monitoring

Centos 7

yum --enablerepo=epel install munin munin-node rrdtool -y

# systemctl enable munin-node # systemctl start munin-node

# vi /etc/munin/munin.conf

Add/Edit as shown below.

#Uncomment the following lines dbdir   /var/lib/munin htmldir /var/www/html/munin logdir /var/log/munin rundir  /var/run/munin  [...]  # a simple host tree. Set your system name [munin.worldcm.net] address 127.0.0.1 use_node_name yes

# vim /etc/httpd/conf.d/munin.conf

Alias /munin /var/www/html/munin <Directory /var/www/html/munin>     Options FollowSymLinks     AllowOverride None     Order allow,deny     Allow from all </Directory> ####---------- Password------------####

<Directory /var/www/html/munin/>       AuthUserFile /etc/munin/munin-htpasswd       AuthName "Munin"       AuthType Basic       require valid-user  Order Deny,Allow Deny from all Allow from all </Directory>

Create munin htpasswd file using following command

htpasswd -cm /etc/munin/munin-htpasswd muninadmin  New password: Re-type new password:

WEB:  http://192.168.1.100/munin

Installing Munin Network Monitoring in CentOS RHEL and Fedora

Munin is a networked resource monitoring tool that can help analyze resource trends. Muninthe monitoring tool surveys all your computers and remembers what it saw. It presents all the information in graphs through a web interface.

This article will help you to install Munin on your system.

Step 1: Set Up EPEL Repository

First we need to add epel repository in our system. Use one of following command to install as per system architecture.

CentOS/RHEL 6, 32 Bit (i386): # rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm   CentOS/RHEL 6, 64 Bit x86_64): # rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm   CentOS/RHEL 5, 32 Bit (i386): # rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm  CentOS/RHEL 5, 64 Bit (x86_64): # rpm -Uvh http://dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm

Step 2: Install Munin Packages

Use following command to install Munin and required packages

# yum --enablerepo=epel install munin munin-node rrdtool

Step 3: Configure Apache

By default Munin creates Apache configuration file /etc/httpd/conf.d/munin.conf. Edit Munin Apache configuration file and add following content.

# vim /etc/httpd/conf.d/munin.conf

Alias /munin /var/www/html/munin <Directory /var/www/html/munin>     Options FollowSymLinks     AllowOverride None     Order allow,deny     Allow from all </Directory>  <directory /var/www/html/munin> AuthUserFile /etc/munin/munin-htpasswd AuthName "Munin" AuthType Basic require valid-user  ExpiresActive On ExpiresDefault M310 </directory> ScriptAlias /munin-cgi/munin-cgi-graph /var/www/cgi-bin/munin-cgi-graph

Create munin htpasswd file using following command

# htpasswd -cm /etc/munin/munin-htpasswd muninadmin New password: Re-type new password:

Above created login details will required to access Munin web interface.

Step 4: Restart Services

First start Munin node service and configure to auto start on system boot.

# /etc/init.d/munin-node start # chkconfig munin-node on

Restart Apache service

# service httpd restart

Step 5: Access Munin Web Interface

Open following url in browser to access Munin web interface. Change ip/domain as per your setup.

http://192.168.1.100/munin or http://svr2.tecadmin.net/munin

Wait approx one hour to view Munin graphs in web interface.

For more details and configuration of munin refer following links

http://munin.readthedocs.org/en/latest/

http://munin.readthedocs.org/en/latest/installation/configuration.html

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# chown munin:munin /var/www/html/munin

# htpasswd /etc/munin/munin-htpasswd Munin

CENTOS 5,6 AND FEDORA

# service munin-node start

# chkconfig --level 35 munin-node on

CENTOS 7

# systemctl enable munin-node.service

# systemctl start munin-node.service

 REMOVE MUNIN AND MUNIN NODE

# yum remove munin-node

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Install Munin to monitor system status.                                                         

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Install Monitorix which is a light weight system monitoring tool.

# yum install rrdtool rrdtool-perl perl-libwww-perl perl-MailTools perl-MIME-Lite perl-CGI perl-DBI perl-XML-Simple perl-Config-General perl-HTTP-Server-Simple perl-IO-Socket-SSL

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Monitorix Installation (Centos 6.7)

1. Disable IPtables and SELinux or Allow rules and update policy if you are using

2. Enable EPEL Repo and Centos 6.7 local repository

3. Install required packages (These package will be installed automatically as dependency package for monitorix)

yum install rrdtool perl rrdtool-perl perl-libwww-perl perl-MailTools perl-MIME-Lite perl-CGI perl-DBI perl-XML-Simple perl-Config-General  perl-HTTP-Server-Simple perl-IO-Socket-SSL

4. Download the latest monitorix version  from http://www.monitorix.org/downloads.html

wget http://www.monitorix.org/monitorix-3.8.1-1.noarch.rpm

5. Install monitorix RPM –>  yum install monitorix-3.8.1-1.noarch.rpm

6. cp /etc/monitorix/monitorix.conf /etc/monitorix/monitorix.conf.orig

7. vim /etc/monitorix/monitorix.conf

title = Linuxraja Montoring

hostname = mysqlm.linuxraja.com

….

….

<httpd_builtin>

enabled = y

host = mysqlm.linuxraja.com

port = 8080

user = nobody

group = nobody

log_file = /var/log/monitorix-httpd

hosts_deny =

hosts_allow =

<auth>

enabled = y

msg = Monitorix: Restricted access

htpasswd = /var/lib/monitorix/htpasswd

</auth>

</httpd_builtin>

# In the graph enable session enable the required services, now we just enable apache

<graph_enable>

system          = y

kern            = y

proc            = y

hptemp          = n

lmsens          = n

nvidia          = n

disk            = n

fs              = y

zfs             = n

du              = n

net             = y

netstat         = y

libvirt         = n

process         = n

serv            = y

mail            = y

port            = y

user            = y

ftp             = n

apache          = y

nginx           = n

lighttpd        = n

mysql           = n

varnish         = n

pagespeed       = n

squid           = n

nfss            = n

nfsc            = n

bind            = n

ntp             = n

fail2ban        = n

icecast         = n

raspberrypi     = n

phpapc          = n

memcached       = n

apcupsd         = n

nut             = n

wowza           = n

int             = y

verlihub        = n

</graph_enable>

8. /etc/init.d/monitorix start

9. Create http user and password (Note : htpasswd will not be available with monitorix package, So you need to install httpd-tools RPM to use that)

htpasswd -d /var/lib/monitorix/htpasswd admin

htpasswd -c /var/lib/monitorix/htpasswd admin

provide password

10. http://192.168.1.146:8080/monitorix   (provide user and password)

To Add other production servers to the main Monitorix server

1. Other Server : Repeat all the above steps except step 9 & 10

2. Monitorix Server (mysqlm.linuxraja.com)  – vim /etc/monitorix/monitorix.conf

# Enable multihost

# Multihost

# —————————————————————————–

<multihost>

enabled = y

footer_url = y

graphs_per_row = 2

remotehost_list = server 1, server 2, server 3

<remotehost_desc>

0 = http://192.168.1.147:8080,/,/

1 = http://192.168.1.148:8080,/,/

2 = http://192.168.1.149:8080,/,/

</remotehost_desc>

groups = n

remotegroup_list = My Group

<remotegroup_desc>

0 = server 2, server 3

</remotegroup_desc>

</multihost>

3. Restart monitorix service  /etc/init.d/monitorix start

4. Now go to http://192.168.1.146:8080/monitorix (Select the new added servers and monitor)

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