wiki:cacti-evaperf
Last modified 22 months ago

Cacti template for evaperf

These templates allow you to get long-term trends for for EVA disk array. Information includes:

Additionally data queries allow for dynamic creation of graph per vdisk.

Changelog

Installation

These templates require cacti version 0.8.7e or later. Templates where created and tested on RHEL/Centos 5.x 

 # wget http://pall.sigurdsson.is/filez/cacti-evaperf.tar.gz
 # tar -zxvf cacti-evaperf.tar.gz
 # mv cacti-evaperf/scripts/query_wmi.py ~cacti/scripts
 # mv cacti-evaperf/script_queries/* ~cacti/resource/script_queries
 # mv cacti-evaperf/scripts/wmic /usr/local/bin

Create a password file for WMI: 

 # echo "username=administrator" > /etc/cacti/HOSTNAME.pw
 # echo "password=MYPASSWORD" >> /etc/cacti/HOSTNAME.pw
 # echo "domain=mydomain" >> /etc/cacti/HOSTNAME.pw

Note 1: here HOSTNAME represent the name of your command-view server as it appears in cacti. So if you add your server as eva-appliance.example.com in cacti then the password file is named /etc/cacti/eva-appliance.example.com.pw

Note 2: if the account you use to log into the command view server is a local account (i.e. not a domain account) then feel free to skip the last (domain=) line in the example above.

Both apache and user running the cacti poller need write access to the following directories: 

 # /var/tmp/cacti/ # Temporary cache for wmi
 # /var/log/cacti/ # query_wmi log for debugging purposes
 # /etc/cacti/HOSTNAME.pw # This file includes password used to access commandview server

Finally log into the cacti web interface and do the following: 

 * Import template: cacti_host_template_eva_commandview.xml
 * Add Device: Add your commandview server, remember to add the appropriate host template
 * Create graphs for this host

Caveats

EVA Virtual disks tend to longer names than cacti assumes. For that reason it is handy to increase max length parameters in cacti in order to see full virtualdisk names. Namely if you go to cacti settings and select the visual tab. The following are reasonable values:

  • Graph Management->Rows per page = 500
  • Graph Management->Maximum Title Length = 120
  • Graph Creation->Data Query Graph Rows = 500
  • Data Sources->Rows per page = 500
  • Data Sources->Maximum Title Length = 120
  • Data Queries->Maximum Field Length = 60

If you change Maximum field length after creating your graphs make sure to either re-create your graphs or go to "Graph Management" and do "reapply suggested names" for all EVA graphs.