Synology SNMPv3 issue

Dominik · October 2020

I wanted to add a Synology NAS but it seems that there's a bug. I'm only allowed to use SNMPv3 to access the NAS so I added it with all the information needed. As a result I'm getting this:

Error: passphrase chosen is below the length requirements of the USM (min=8).
Tue Oct 20 15:38:12 2020: SNMP session to SERVERNAME cannot be created. /home/lpar2rrd/stor2rrd/bin/san_verify.pl:252 : 
/usr/bin/snmpwalk -v 3 -u USERNAME -l authPriv -a SHA -x AES SERVERNAME .1.3.6.1.2.1.1.5.0

If I try manually with the following line on the server directly it works:

/usr/bin/snmpwalk -v 3 -u USERNAME -l authPriv -a SHA -A PASSPHRASE -x AES -X PASSPHRASE SERVERNAME .1.3.6.1.2.1.1.5.0
SNMPv2-MIB::sysName.0 = STRING: SERVERNAME

Is there a reason why the software doesn't use the passphrase delivered in the device setup?
The passphrase is 14 characters long.

Lukas · October 2020

Hello,

Do you have a context name defined in the storage configuration (in stor2rrd)?

I think this is the same bug as here

https://forum.xorux.com/discussion/937/vsp-g600-snmp-context-cannot-be-specified-on-stor2rrd

it is also implemented for Synology NAS.

thank you

Dominik · October 2020

No context name configured since there's also none on the Synology NAS.
It seems like as if stor2rrd doesn't use the configured passphrase.

Lukas · October 2020

Hello,

The bug was in connection test of storage via GUI. However, the bug was not in the data collection. It is so? Try this fix:

https://download.stor2rrd.com/patch/7.00-3-7-g5dba/DeviceConnTest.pm.gz

Gunzip it and copy to /home/stor2rrd/stor2rrd/bin (755, stor2rrd owner)

-rwxr-xr-x 1 stor2rrd stor2rrd 212619 Oct 22 10:17 DeviceConnTest.pm

If your web browser gunzips it automatically then just rename it: mv DeviceConnTest.pm.gz DeviceConnTest.pm

Assure that file size is the same as on above example

After copy script to bin directory

refresh GUI. Try connection test again.

Let us know.

Thank you

Dominik · October 2020

Hey Lukas,

Thank you, the fix you provided solved the problem immediately!

Dominik

Synology SNMPv3 issue

Comments

Howdy, Stranger!

Categories

In this Discussion