Grumpquat’s Corner

Dear Grumpquat~
I joined my cluster to an AD Domain a few years ago. Now I need to add a new cluster to AD and I want to use the same user, but I have no idea what user I used. Is it possible to find out?
~Musing in the Marina

Dear Musing,

While you could add Mr. Fusion to a DeLorean and go back in time, that’s a lot of effort when we can just look at the cluster itself. Whenever a cluster joins the AD domain, each node will reach out and join on its own. It’s helpful to note that the user will need permissions to add a computer account to join the domain.

In your case, coming in after the deed is done, you can log into any of the nodes and find out what account was used by entering the container (qsh) and issuing the grep command –

sudo qsh
grep join /var/log/qumulo/domain_assistant.log | grep '\-\-debug'

This will give output similar to the below –

2021-12-21 13:33:13,276 : [DEBUG] domain_assistant.py:1205 (pid: 2042) : domain_assistant options: ['--debug', 'join', '--domain', 'grumplab.local', '--domain-netbios', '', '--name', 'grumpcluster', '--user', 'Administrator', '--dns-servers', '192.168.11.12', '--dns-servers', '192.168.11.11', '--dns-search-domains', 'grumplab.local', '--dns-search-domains', 'grump.com'] 

In the output given above, the user that added it is ‘Administrator’. That may not always be the case, especially in large domains with multiple administrator users, so keep that in mind.

As always, if you have any questions with the above, please don’t hesitate to reach out in your slack channel and the Success team will be happy to assist.

Stay Grumpy!
The Grumpquat