Default Metrics in Ganglia

Question

Can I have the list of default metrics in Ganglia?
Example: CPU and memory are two of the default metrics collected by Ganglia. Is there a complete list of all the default metrics supported by Ganglia?
I could not get any documentation on the same.

Answer 1

Ganglia provides the following group of default system metrics stored in rrd files per cluster directories:

1. CPU statistics - Report processors related statistics. Example: cpu user, cpu nice, cpu system, cpu io wait etc.

2. Disk statistics - Report mount points information. Example: mount points disk size, disk size available etc.

3. Memory statistics - Reports a large amount of valuable information about the Linux system's memory. Read about linux meminfo here

4. Network statistics - Reports network information and data is available in the /proc/net/ directory. Read about linux /proc/net directory

5. NFS statistics - Reports nfs server and client statistics.

6. Network interface traffic - Reports interface statistics from /proc/net/dev.

All the above statistics exposes run time system information which exist in /proc virtual file system. Read about proc here

NOTE: Default python metrics files are located under /usr/lib64/ganglia/python_modules directory in python extension.