Ceph monitoring

In case of usage of Virtual Appliance

• Use local account lpar2rrd for hosting of STOR2RRD on the virtual appliance
• Use /home/stor2rrd/stor2rrd as the product home

STOR2RRD collects data from Prometheus export module.
Ceph version 14.2 (Nautilus) and newer are supported.

Enable Prometheus export module

Prometheus online docu


[user@ceph-mgr]$ sudo ceph mgr module enable prometheus

Enable access to Prometheus export module from LPAR2RRD appliance, by default module accepts HTTP requests on port 9283.
Check connectivity:

$ perl /home/stor2rrd/stor2rrd/bin/conntest.pl <CEPH MGR IP> 9283
  Connection to "<CEPH MGR IP>" on port "9283" is ok

STOR2RRD configuration

• Create new storage in STOR2RRD
  Settings icon -> Storage -> New -> Vendor:device -> CEPH : Ceph
  
  Configure hostnames/IPs
  If you are using a load balancer translating hostname to an active manager node, then you can fill in only the load balanced hostname.
  Otherwise, fill in IP addresses/hostnames of all CEPH manager nodes which can host the Prometheus module.
  You cen get a list of manager nodes from "ceph -s" command.
  
  
  
• Schedule to run storage agent from stor2rrd crontab (lpar2rrd on Virtual Appliance, it might already exist there)

  $ crontab -l | grep load_cephperf.sh
  $
  

  Add if it does not exist as above

  $ crontab -e
  
  # Ceph 
  0,5,10,15,20,25,30,35,40,45,50,55 * * * * /home/stor2rrd/stor2rrd/load_cephperf.sh > /home/stor2rrd/stor2rrd/load_cephperf.out 2>&1
  

  Assure there is already an entry with the UI creation running once an hour in crontab

  $ crontab -e
  
  # STOR2RRD UI (just ONE entry of load.sh must be there)
  5 * * * * /home/stor2rrd/stor2rrd/load.sh > /home/stor2rrd/stor2rrd/load.out 2>&1
  

• Let run the storage agent for 15 - 20 minutes to get data, then:

  $ cd /home/stor2rrd/stor2rrd
  $ ./load.sh
  

• Go to the web UI: http://<your web server>/stor2rrd/
  Use Ctrl-F5 to refresh the web browser cache.