Fedora or Redhat Server Tips

Tune Memory Usage Run:

  • ps -eo pid,ppid,rss,vsize,pcpu,pmem,cmd -ww --sort=pid

There are two useful when determining the per process memory usage are: RSS and VSIZE

A graph of RSS per unit time will show how much RAM the process is using over time.

RedHat / CentOS Install and Configure Cacti Network Graphing Tool

Cacti is a complete frontend to RRDTool, it stores information to create graphs with data in a MySQL database. The frontend is PHP. Along maintaining Graphs, Data Sources, and Round Robin Archives in a database, cacti handles the data gathering.

20 Linux System Monitoring Tools Every SysAdmin Should Know