Re: OT ACS 5.2

From: marc edwards <renorider_at_gmail.com>
Date: Sat, 21 Jan 2012 07:26:49 -0800

much appreciated, Farrukh. Perhaps the secondary options change in the
distributed management section (on secondary) if a primary is lost. I hope
I will never have to find out.

Marc

On Sat, Jan 21, 2012 at 4:34 AM, Farrukh Haroon <farrukhharoon_at_gmail.com>wrote:

> Hello Marc
>
> From the official user guide:
>
> "In general, you make configuration changes on the primary server only,
> and the changes are propagated to all secondary servers, which can then
> view the configuration data as read-only data. A small number of
> configuration changes can be performed on a secondary server, including
> configuration of the server certificate, and these changes remain local to
> the server.
>
> There is no communication between the secondary servers. Communication
> happens only between the primary server and the secondary servers. The
> secondary servers do not know the status of the other secondaries in their
> deployment."
>
> "*There can be one server only that is functioning as the primary server.
> However, you can promote a secondary server so that is assumes the primary
> role for all servers in the deployment*. The promotion operation is
> performed either on the secondary server that is to assume the primary role
> or on the primary server.
>
> Note: When the primary server is down, do not simultaneously promote two
> secondary servers."
> "Under normal circumstances, each configuration change is propagated to
> all secondary instances. Unlike ACS 4.x where full replication was
> performed, in ACS 5.2, only the specific changes are propagated. As
> configuration changes are performed, the administrator can monitor (on the
> Distributed System Management page) the status of the replication and the
> last replication ID to ensure the secondary server is up to date. "
>
>
> Regards
>
> Farrukh
>
> On Fri, Jan 20, 2012 at 9:10 PM, marc edwards <renorider_at_gmail.com> wrote:
>
>> This seems to be the hottest off topic going! I know that previously
>> somebody was directed towards TAC for a more involved issue... I hope an
>> ACS master ( I am sure there are many on this list) can help provide
>> information before bothering a busy TAC engineer.
>>
>> I am looking for information about the replication process. Currently, I
>> have a primary set up and 4 secondaries. I notice on the primary there is
>> an option to promote a secondary. Will this allow two primaries that I
>> can access to do updates or will it demote the existing primary?
>>
>> If the single primary ever has a failure, is there an auto promotion of a
>> secondary?... I am not sure how I could promote a secondary as the option
>> is not available on secondary (again in the case of a primary failure).
>>
>> Thanks in advance for your help,
>>
>> Marc
>>
>>
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>>
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Received on Sat Jan 21 2012 - 07:26:49 ART

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