[lustre-discuss] Rebuild server

[Alexander I Kulyavtsev]

Here are configuration files we keep in git in addition to scripts for lustre install and mdt/ost formatting.

/etc/ldev.conf                              -- this file is common for all servers
/etc/sysconfig/lustre                  -- common for all servers; changed zfs mountpoint

/etc/modprobe.d/lustre.conf   -- and/or other modprobe.d files with lustre/lnet/lnd drivers configuration; likely common

/etc/zfs/vdev_id.conf                -- zfs
/etc/zfs/zfswatcher.conf            -- zfs monitoring;  "from ="

Alex.

________________________________________
From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> on behalf of Peter Bortas <bortas at gmail.com>
Sent: Wednesday, March 16, 2016 9:06 AM
To: Jon Tegner
Cc: lustre-discuss at lists.lustre.org
Subject: Re: [lustre-discuss] Rebuild server

Hi Jon,

Just for extra reinsurance from the real world: NSC reinstalls the
same system image on all MDSs and OSSs every time we reboot our
servers. So there is no special magic in the OS that needs to be
preserved with the exception of the /etc/ldev.conf file. In our case
we have fixed that difference between servers by having an init script
that knows how to recreate it.

Regards,
--
Peter Bortas
National Supercomputer Centre
Sweden


On Fri, Mar 11, 2016 at 12:41 PM, Jon Tegner <tegner at foi.se> wrote:
> Thanks! Much appreciated!
>
> Was quite stressed when I noticed the server was down (data is backed up,
> but still). Our servers are managed/provisioned by kickstart and saltstack -
> so it should be easy to bring up new ones with the same configuration.
>
> Thanks again,
>
> /jon
>
> On 03/11/2016 07:05 AM, Cowe, Malcolm J wrote:
>>
>> So, in summary: rebuild the root disks (maybe use a provisioning system
>> like kickstart for repeatability), restore the network config, restore LNet
>> config, maybe restore the HA software, restore the identity management (e.g.
>> LDAP, passwd, group) then mount the storage as before.
>
>
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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