[Labs-l] Moving away from NFS homedir instance on Oct 30

Wed Oct 31 10:13:42 UTC 2012

Hmm, was this forgotten? I don't see anything in the Server admin log on
Wikitech, and I can still write to the /home directory.

On Fri, Oct 26, 2012 at 8:25 AM, Ryan Lane <rlane32 at gmail.com> wrote:

> A few weeks ago I changed the /home mount to be a direct, rather than
> an indirect, automount, which means that all of /home is mounted
> rather than directories for each user. I did this in anticipation of
> switching to glustefs for homedirs, but specifically I did it in
> anticipation of enabling pam_mkhomedir. Today I enabled pam_mkhomedir.
> So, if you log into an instance and your home directory didn't already
> exist in the project, the instance will create it automatically.
>
> This is one step towards getting rid of the centralized NFS instance,
> which is really small, causes us performance issues, and often fills
> up, causing lots of annoying issues.
>
> Tuesday night (Oct 30) I'll switch the home directories over to
> glusterfs storage, rather than the centralized home directories. This
> isn't an easy switch. I'm going to take the following steps:
>
> 1. Change the NFS home directories to be read-only
> 2. Copy each project's data to its private gluster share
> 3. Change the autofs information in LDAP to point the /home mount to
> the private gluster share
>
> After doing so, instances will need to be rebooted to use the new
> mount. Until your instance is rebooted your home directories will be
> read-only. After all instances are switched off of NFS, I'm going to
> delete the NFS instance.
>
> - Ryan
>
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> Labs-l at lists.wikimedia.org
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>

-- 
Regards,
Hydriz

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