Re: Samba4 Can we use two file-servers?

Mike Howard <mike@xxxxxxxxxxxxxxxxxxxx> · Tue, 26 Jun 2012 12:31:08 +0100

On 26/06/2012 11:22, steve wrote:

On 26/06/12 11:54, Mike Howard wrote:

On 26/06/2012 09:04, steve wrote:

Hi
We've just added a second DC to our domain, both DCs are Samba4

DC1 is also the s3fs file server. If that goes down then so does the
file-server. IOW, we can still authenticate via DC2 but we cannot do
any work!

What are my options here? Is it possible to sync the files to DC2 and
use that in case of failure? Or maybe add a third box running smbd?

Cheers,
Steve

It depends on your needs. For me, I use a couple of arm plugs as PDC &
BDC for authentiaction and dns etc and file serve files from elsewhere,
also plugs. Where ever you serve files from, if that box goes down you
lose your data/file serving capability. You can use (software or
hardware) raid to provide redundancy for the disks and/or a complete
backup device for full HA.

Hi Mike

Sorry, my English is over 30 years old! Can you give me a one liner on 

plugs and HA in a S4 context?

We'd like to have a spare box with a backup of the data to substitute 

the DC/fileserver. What do you think about the possibility of syncing 

the data over to the secondary DC along with a copy of smb.conf and 

using that when the primary DC/fileserver goes down. Would the clients 

know to use the new fileserver: thinking about Kerberos here.

Cheers
Steve

Sorry, by plug I meant Sheevaplug/Dreamplug/Guruplug which arem compact, 

low power arm devices. HA is High Availability, put (over) simply, the 

provision of backup devices/components in case of failure.

Daniel mentioned in another reply, you can use GlusterFS (NAS type 

approach) to aggregate your data (you still need somewhere to aggregate 

it to though) or replication if your restricted to the two DCs, though 

I've never tried that approach. In either case the switch (of where data 

is accessed) should be automated from a client perspective.

Cheers,
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