[DRBD-user] Upgrade without taking the service down?

Dominik Klein dk at in-telegence.net
Fri Mar 14 08:50:54 CET 2008

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


Florian Haas wrote:
> On Wednesday 12 March 2008 15:28:07 Dominik Klein wrote:
>> Hi
>>
>> say both nodes run version 8.x.y and I want to upgrade to 8.x.y+n (no
>> major version change)
>>
>> Is it safe to
>>
>> A: primary
>> B: secondary
>> Disconnect
>> Upgrade secondary node (B)
>> Connect
>> Let drbd sync
>> Switchover the service (rolechange)
>> Disconnect
>> Upgrade secondary node (A)
>> Connect
>> Let drbd sync
>> A: secondary
>> B: primary
>>
>> ?
> 
> Yes. Except that instead of disconnect/connect, you need to do down/up.
> 
>> And how about 8.0.x to 8.2.x ?
> 
> Same procedure.

Thanks!
Dominik



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