How to install and configure Ganglia in CentOS 5.5

How to install and configure Ganglia in CentOS 5.5

Ganglia is an open-source cluster monitoring project initiated by UC Berkeley, designed to measure thousands of nodes. Ganglia includes gmond, gmetad, and a Web front-end. It is mainly used to monitor system performance, such as cpu, mem, hard disk utilization, I/O load, and network traffic. It is easy to see the working status of each node through the curve, it plays an important role in rationally adjusting and allocating system resources and improving the overall system performance.

In CentOS 5.5, there are many ways to install Ganglia, such as using yum, rpm package or source code. Here I will discuss how to install Ganglia source code. Needless to say, go to the Ganglia official website to download the source code, decompress the package, read the README and INSTALL documents, and then follow the instructions above for step-by-step installation. If yum is missing, it is the greatest convenience of CentOS. If yum is not available, install the source code. The specific process is relatively simple.

Generally, configuration is required after installation. The specific configuration files are gmond. conf and gmetad. conf in the/etc/ganglia/directory.

Gmond. conf

Cluster {

Name = "unspecified" ------> changed to: "my cluster"

Owner = "unspecified"

Latlong = "unspecified"

Url = "unspecified"

}

Gmetad. conf

Because gmetad. the default RRD data storage path in conf:/var/lib/ganglia/rrds. You need to create your own directory and change the owner to nobody (originally root ), otherwise, the following error occurs:

Err1:

# Service gmetad status

Gmetad is dead, but subsys is locked

Err2:

There was an error collecting ganglia data (127.0.0.1: 8652): fsockopen error: Connection refused

Solution code:

# Mkdir-p/var/lib/ganglia/rrds

# Chown nobody: nobody/var/lib/ganglia/rrds

Pay attention to the conf. php file under the/var/www/html/ganglia/directory.

Correctly specify the path for installing rrdtool. The default value is as follows:

Define ("RRDTOOL", "/usr/bin/rrdtool ");

Expand the Python module under Ganglia 3.1.x (translated from the official wiki)

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Ganglia installation tutorial yum

Ganglia Quick Start Guide (translated from the official wiki)

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