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Re: Antw: Re: n-way multi master and mirror mode



Ulrich Windl wrote:
>>>> Quanah Gibson-Mount <quanah@symas.com> schrieb am 05.12.2016 um 04:23 in
>> There is zero requirement to put a load balancer in front of an MMR setup.
> 
> But it seems to make much sense: In my experience if you configure multiple
> LDAP servers, the NSS resolver always uses the first configured server as
> long as it's reachable; even if it's not, the first configured server is
> tried first.

This depends very much on the client. E.g. sssd works fairly well even with
simple DNS round-robin. The load is almost equally spread.

> After connection timeout the second server is tried... We had dhad a case
> when all LDAP operations were heavily delayed when two out of three servers
> had failed (due to rebooting the machine).

If you want to have fast fail-over then reduce timeout timespan.

Ciao, Michael.

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