Adding shared directory to Econ 148 based on bcourses group affiliation

[balajialg]

Just testing the functionality to have a shared/shread read write directories for a group based on bcourses affiliation.

@ericvd-ucb gave his approval to use Econ 148 as a guinea pig for this functionality.

Reviewed the documentation here to make this change

bcourses group for reference,

[ryanlovett]

I think it might need extraVolumeMounts as the dictionary key. (which the docs erroneously omit) For example:

    course::1532866::group::shared_readwrite:
      extraVolumeMounts:
        - name: home
          mountPath: /home/jovyan/shared-readwrite
          subPath: _shared

Note that I've omitted readOnly: true since the comment says "shared_readwrite". I've also added -readwrite to the mount path. Our convention in datahub is to use shared for shared read-only directories and shared-readwrite for shared read-write directories.

You will also need to create the directory _shared in the filestore, along side the user home directories.

[balajialg]

Thanks a ton, @ryanlovett! I replicated your suggestions in the config file. I might need some help with creating "_shared"directory in filestore. I will reach out via Slack!

[balajialg]

@ryanlovett @shaneknapp How do I create a shared dir for this course in filestore? Is there any documentation that I can take a look at?

I logged into NFS server; Trying to find the location where homedirs are mounted.

[ryanlovett]

@balajialg We don't have any concise info about just that, but we do have a few of the commands documented at https://docs.datahub.berkeley.edu/en/latest/admins/howto/new-hub.html#creating-a-new-filestore-instance.

Basically you should:

local$ gcloud compute ssh nfsserver-01 --zone=us-central1-b
nfsserver-01$ sudo install -d -o 1000 -g 1000 \
    /export/<hubname>-filestore/<hubname>/staging/_shared \
    /export/<hubname>-filestore/<hubname>/prod/_shared

We should probably have a separate section about this for creating shared data directories, right after the prod/shared directories are created.

[balajialg]

Thanks a ton, @ryanlovett! Just made a commit that is related to your input

[ryanlovett]

Since this is for Econ 148 on the Data 100 hub, I feel like it should be a separate shared directory, rather than a subdirectory of _shared. For example, _shared-econ148. Otherwise those in Data 100 can read/write data in Econ 148's directory. Maybe that's not a problem?

[balajialg]

@ryanlovett Fair concern! Created a separate shared directory for Econ 148

[ryanlovett]

@balajialg Okay, great. I also made one under data100/staging/.

[balajialg]

Ah, missed that. Thanks @rylo! Can I merge this PR to staging and test it?

[ryanlovett]

Yes, I think it is ready to test.