[DRBD-user] RES: RES: Data Block Changes replication with 5 servers

fernandocmachado at yahoo.com.br fernandocmachado at yahoo.com.br
Mon Nov 13 14:24:49 CET 2017

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


This scenario was hipotethical, I don't have sde1 on server 5 yet... hehe

 

I just have 4 servers that need to replicate a partition or a fisical disk
to the backup server (server 5).

 

I will take your sugestion and bring it to my board meeting, regarding
contract the support plan.

 

Also I will create a 1 to 1 DRBD config, and try to add after another node
to this. Thank you for your assistance Adam, I really appreciate it.

 

 

 

Fernando de Campos Machado

Oracle Database Administrator / Infrastructure Analyst
fernandocmachado at yahoo.com.br

+55 (19) 99199-2028

 

 <http://www.linkedin.com/in/fernandocamposmachado/>
<skype:fernandocmachado?userinfo>  <http://instagram.com/fernandocmachado> 

 

De: Adam Goryachev [mailto:mailinglists at websitemanagers.com.au] 
Enviada em: segunda-feira, 13 de novembro de 2017 11:09
Para: fernandocmachado at yahoo.com.br; drbd-user at lists.linbit.com
Assunto: Re: RES: [DRBD-user] Data Block Changes replication with 5 servers

 

 

 

On 13/11/17 21:59, fernandocmachado at yahoo.com.br
<mailto:fernandocmachado at yahoo.com.br>  wrote:

Hello Adam,

 

Thank you for replying me on this matter.

 

I was trying to use 8.4, but since it didn't work, I tried with 9.0, but no
sucess also.

 

I want only 1 copy of the data blocks for each server to backup server. I
was figuring out this model, but I couldn't apply it:

 

Server 1: sdb1 - 1TB

Server 2: sdc1 - 1TB

Server 3: sdd1 - 1TB

Server 4: sde1 - 1TB

 

Server 5 (backup for the 4 servers) 4 disks: 

Sdb1 - 1TB

Sdc1 - 1TB

Sdd1 - 1TB

Sde1 - 1TB

 

I was not able to configure as this, because I don't the knowledge to do it.
I got only 1 to 1, but I need 4 to 1.

 

You have a choice to use either 8.4 or 9.0, given that either will work
based on your above requirements. However, do you really have a sde1 in
Server4 ? Are you sure this isn't sda1 or sdb1? How many drives do you have
in each of the 4 servers?
You can have:
Server1 sdb1 sync with Server5 sdb1
Server2 sdb1 sync with Server5 sdc1
Server3 sdb1 sync with Server5 sdd1
Server4 sdb1 sync with Server5 sde1

ie, the disk device name does not need to match.

Please follow the excellent documentation on how to install and configure
DRBD. Start with just server1 and server5. If you get stuck, then post your
configs, and a complete description of your servers (OS, versions, hardware,
etc), as well as any log files that are relevant. Then we might be able to
assist you further. However, please take the time to read and understand the
documentation, it will help you now, and will definitely help you in the
future when something goes wrong.

Alternatively, contact linbit and buy a support contract, their help is
awesome, and having an expert available when something goes wrong is very
helpful (PS, just a happy customer, I don't get paid from linbit).

Regards,
Adam

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