how to upgrade the failover pair?

[Bill Shirley]

I am running a fail-over pair:
primary = dhcp-server-4.3.6-9.fc27.x86_64
secondary = dhcp-4.2.5-23.fc19.x86_64

So yes, I think 4.1.1 and 4.3.5 would speak the same language.

Bill


On 5/31/2018 6:40 AM, Алексей Перов wrote:
> You mean 4.1.1 and 4.3.5 use the same failover protocol and can talk to each other without any issue?
>
>
> 31.05.2018 12:41, Simon Hobson пишет:
>> Aleksey Perov <a.perov at sura.ru> wrote:
>>
>>> The draft plan is as follows:
>>>
>>> - stop the secondary;
>>> - turn the primary into partner-down;
>>> - reinstall the secondary;
>>> - wait until the primary reclaims all addresses in all pools;
>>> - stop the primary;
>>> - copy leases file from primary to secondary;
>>> - start the secondary in partner-down mode;
>>> - reinstall the primary;
>>> - turn the secondary into normal mode;
>>> - start the primary.
>>>
>>> Is anything wrong here?
>>
>> Isn't the simplest - provided they are using the same level of failover protocol - to simply start up a clean upgraded 
>> secondary and allow it to transfer leases from the primary ? So :
>>
>> Stop one partner, put the remaining one into partner down state.
>> Create new upgraded clean partner.
>> Start up new partner and allow the pair to synchronise.
>>
>> Repeat for the other partner.
>>
>>
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>