[Brother Lian Technology sharing] How to install and configure Munin on Linux

how the Install and configure Munin on Linux

Munin is a great system monitoring tool similar to the RRD tool that provides you with a wide range of systems performance information, such as disks, networks, processes, systems, and users. These are the contents of Munin default monitoring. Now, let's talk about munin!.

How does Munin work?

Munin runs in client-server mode. The Munin server process running on the primary server will collect data from the client daemon running locally (Munin can monitor its own resources) or the remote client (Munin can monitor hundreds of machines) and display it graphically on its web interface.

configuring in the server Munin

To configure the server side and the client, we need to complete the following two steps.

installation The Munin server package is configured so that it can collect data from the client.

installation The Munin client enables the server to connect to the client daemon for data collection.

Installing the munin server side on Linux

On the basis of Install the Munin server on the Ubuntu/debian machine:

Apt-get Install Munin apache2

On the basis of Install the Munin server on the Redhat/centos machine:

On the basis of Before installing Munin on a Redhat machine, you need to make sure that the EPEL repositories are enabled because the Redhat-based machine's software warehouse is not Munin by default.

Yum Install Munin httpd

Configuring the Munin server side on Linux

Here's what we're going to start on the server Steps taken by Munini:

Add the host details that need to be monitored in the/etc/munin/munin.conf.

Configure The Apache Web server to include the Munin configuration.

Create a user name and password for the web interface

Restart Apache server

Step 1

Add the host entry in the /etc/munin/munin.conf file. Add the client to be monitored at the end of the file. In this example, I added the database server to be monitored and its IP address.

Example:

[Db.linuxnix.com]

Address 192.168.1.25

Use_node_name Yes

Save the file and exit.

Step 2

Edit or create files in the/ETC/APACHE2/CONF.D directory munin.conf used to include Munin and Apache-related configurations. Also note that the default other Web-related Munin configuration is saved in the/var/www/munin directory.

Vi/etc/apache2/conf.d/munin.conf

Content:

Alias/munin/var/www/munin

<Directory/var/www/munin>

Order Allow,deny

Allow from localhost 127.0.0.0/8:: 1

AllowOverride None

Options execcgi FollowSymLinks

AddHandler Cgi-script. CGI

DirectoryIndex index.cgi

authuserfile/etc/munin/munin.passwd

AuthType Basic

AuthName "Munin Stats"

Require Valid-user

<ifmodule mod_expires.c>

Expiresactive on

ExpiresDefault M310

</IfModule>

</Directory>

Save the file and exit.

Step 3

Now create a user name and password for viewing the Munin diagram:

Htpasswd-c/etc/munin/munin-htpasswd Munin

Note: for Redhat/centos machine, to access your configuration file, you need to replace "apache2" with "httpd" in each path.

Step 4

Restart Apache server, allowing the Munin configuration to take effect.

based on Ubuntu/debian:

Service Apache2 Restart

based on Centos/redhat:

Service httpd Restart

Installing and configuring the Munin client on Linux

Step 1

Installing the Munin client on Linux

Apt-get Install Munin-node

Note: If you want to monitor your Munin server side, you also need to install Munin-node on the server side.

Step 2

Edit The munin-node.conf file to configure the client.

Vi/etc/munin/munin-node.conf

Example:

Allow ^127\.0\.0\.1$

Allow ^10\.10\.20\.20$

# What address does the supervisor hear

Host *

# and which port

Port 4949

Note: 10.10.20.20 is my Munin server, which connects to the client's 4949 port to get the data.

Step 3

Restart The Munin-node in the client machine :

Service Munin-node Restart

Test connection

Check if you can connect from the server to the client's port 4949, and if not, you need to open the port on the firewall in the client machine.

Telnet db.linuxnix.com 4949

last visited Munin Web page

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[Brother Lian Technology sharing] How to install and configure Munin on Linux