Read CDB offline from backup

[tsiemers1]

Does NSO have any built in methods to read the CDB from a backup? Just did a ned migration and forgot to take a backup of the device templates before I deleted the old ned. Which in turn removes the template config....

So instead of doing the normal spin up temp NSO, restore backup, grab missing config, re-apply. I was wonder if the CDB can be read offline with a backup copy of the cdb folder

cdb

--A.cdb

--C.cdb

--O.cdb

--S.cdb

I see this python package but not sure if it would apply to NSO's cdb structure.

https://github.com/acg/python-cdb

[vleijon · Accepted solution]

That is not the same CDB, no.

The ncs binary takes the option --cdb-debug-dump now with the caveat that this is a debug command and that there is no guaranteed stability in the output format and all of that you can try it and see if the output is what you need!

[tsiemers1 · Accepted solution]

Nice! That was it, only the ncs cli command were needed. Not a full blown spin up and restore.

 --cdb-debug-dump Directory
     Dumps information about CDB files in Directory as text to stdout
     (runs standalone and does not require a running NCS).

After expanding the backup,  just pointed the above command at the  cdb directory within the backup.

ncs --cdb-debug-dump cdb/ >> cdb_dump.txt

Then just grep out the template xpath:

root@nsodev5:/home/nsodev/nsobackup# cat cdb_dump.txt | grep /ncs:devices/template

Then within the debug dump I found the old template data. Thanks!