[Pacemaker] Role and the need of attrd?

[Andrew Beekhof]

On Fri, Dec 23, 2011 at 11:10 PM, Nirmala S <nirmalas at huawei.com> wrote:
> Hi All,
>
>     I had gone through quite some documentation of pacemaker. But i could
> not find the information regarding attrd.
>
>
>
> 1. What is the role of attrd?

To co-ordinate updates of certain values to the cib.
It may also delay the updates to synchronise them with updates from
other nodes (so that they occur at, or close to, the same time) or to
prevent reporting transient changes.

> 2. What is the need for it when cib daemon can maintain configuration and
> current state or how is it different from cib?

See above.

> 3. What is attrd relation with other daemons of pacemaker?

It is an intermediary.

> Thanks and regards
>
> Nirmala
>
>
>
>
>
>
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