QNAP 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

The product obtains all data from QNAP Q'center via ssh.

Storage connectivity

• Allow access from the STOR2RRD host to QNAP Q'center on ports 22 (SSH).
  

  $ perl /home/stor2rrd/stor2rrd/bin/conntest.pl 192.168.1.1 22 
    Connection to "192.168.1.1" on port "22" is ok
  

• Connect to the QNAP Q'center as admin and allow ssh access
  
• Create OS level user on the QNAP Q'center appliance, preferably stor2rrd with no any special rights
  Log as admin to the QNAP Q'center appliance:

  admin@qcenter:/home/admin$ sudo useradd -c "STOR2RRD user" -m stor2rrd
    [sudo] password for admin: 
  admin@qcenter:/home/admin$ sudo passwd stor2rrd
    Enter new UNIX password: 
    Retype new UNIX password: 
    passwd: password updated successfully
  

• Exchange ssh keys to allow ssh-key based access
  Create ssh-keys on STOR2RRD host under stor2rrd user if do not exist yet.
  It should already exist on the Virtual Appliance, skip it there.
  Type enter instead of passphrase

  # su - stor2rrd # (use lpar2rrd user on the Appliance)
  $ ls -l ~/.ssh/id_rsa.pub
  $ ssh-keygen -t rsa -N ""
    Generating public/private rsa key pair.
    Enter file in which to save the key (/home/stor2rrd/.ssh/id_rsa):
    ...
  $ ls -l ~/.ssh/id_rsa.pub
    -rw-r--r-- 1 stor2rrd stor2rrd 382 Jun  1 12:47 /home/stor2rrd/.ssh/id_rsa.pub
  

• Copy ssh-key into the QNAP Q'center under storage stor2rrd
  

  $ scp ~/.ssh/id_rsa.pub stor2rrd@<Q'center IP/hostname>:/tmp/id_rsa.pub
  $ ssh stor2rrd@<Q'center IP/hostname>
  stor2rrd@qcenter:/home/stor2rrd$ mkdir .ssh
  stor2rrd@qcenter:/home/stor2rrd$ chmod 700 .ssh
  stor2rrd@qcenter:/home/stor2rrd$ mv /tmp/id_rsa.pub .ssh/authorized_keys
  

• Test connectivity, you should not be prompted for password:

  $ ssh stor2rrd@<Q'center IP/hostname> "date"
    Mon May 25 23:30:01 CEST 2020
  

STOR2RRD storage configuration

Add storage into configuration from the UI:
Settings icon ➡ Storage ➡ New ➡ Vendor:device ➡ QNAP

Use 'Server name' from QCENTER as a 'QNAP name' like qnap101 in this example:


• Assure you have enough of disk space on the filesystem where is STOR2RRD installed
  Roughly you might count 2 - 30 GB per a storage (it depends on number of volumes, 30GB for 5000 volumes)

  $ df -g /home   # AIX
  $ df -h /home   # Linux
  

• Schedule to run storage agent from stor2rrd crontab (lpar2rrd on Virtual Appliance, it might already exist there)

  $ crontab -l | grep load_qnapperf.sh
  $
  

  Add if it does not exist as above

  $ crontab -e
  
  # QNAP 
  0,5,10,15,20,25,30,35,40,45,50,55 * * * * /home/stor2rrd/stor2rrd/load_qnapperf.sh > /home/stor2rrd/stor2rrd/load_qnapperf.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.

Troubleshooting

• STOR2RRD stops collecting data from QNAP
  STOR2RRD collects data from QNAP Q'center. Sometimes QNAP Q'center Agent hangs and stops sending data to QNAP Q'center.
  Restart QNAP Q'center agent: Login to QNAP GUI ➡ Open App Center ➡ Stop QNAP Q'center Agent ➡ Start QNAP Q'center Agent