Ganglia python metric extension

1 Install Ganglia

Ganglia installation and deployment process

2 Download the modpython.so dynamic library (you can skip this step if you have modpython.so)

yum -y install ganglia-gmond-python

3 Configure your own extended metric

The official provides some metrics that can be modified and used directly:
https://github.com/ganglia/gmond_python_modules

① Modify the configuration file and add extended modules

vim /etc/ganglia/gmond.conf

modules {
    
    
  ...
  
  module {
    
    
    name = "sys_module" ##注意命名要对应
    path = "modsys.so"
  }
  /* 添加 python 主模块 */
  module {
    
    
    name = "python_module"
/* 动态库路径， 完整路径为   $GANGLIA_ROOT/lib64/ganglia/modpython.so */
    path = "modpython.so"  
/*  Python 扩展模块代码存放目录，不存在则创建 */
    params="/etc/ganglia/python_modules/"
  }
}

include ('/etc/ganglia/conf.d/*.conf')

/* /etc/ganglia/conf.d/ 为 python 扩展模块配置文件存放目录，不存在则创建， gmond 启动时，会 load 所有的配置文件和 python 模块代码*/
include ('/etc/ganglia/conf.d/*.pyconf')
...

② Write extension module Python code and configuration files

Extension module configuration file storage location

/etc/ganglia/conf.d/xxx.pyconf

Extension module python code storage location

/usr/lib64/ganglia/python_modules/xxx.py

3 Restart the service

systemctl restart gmond.service