Re: UM3 + different pools of services/realservers

Mattias Andersson wrote:
> Hi Nick.
> 
> Sorry for the late reply, I didn't get your problem the first time
> reading your mail.
> Now I think I get it.
> You simply want to configure multiple virtual services on one director
> pair?

Indeed.  Rather than maintain n number of directors for each n number of
virtual services (each director pair with little load), have a sole pair
of UM3 directors handling redirections/rewrites for all the virtual
services.

> If so, what you want to do is simply add more IPaddr2 lines in your
> haresources...
> Like:
> 
> dir01.ece.utexas.edu \
>        ldirectord::ldirectord.cf \
>        LVSSyncDaemonSwap::master \
>        IPaddr2::128.83.59.2/24/eth0/128.83.59.255 \
>        IPaddr2::128.83.59.3/24/eth0/128.83.59.255 \
>        IPaddr2::128.83.59.4/24/eth0/128.83.59.255
> Be carefull with the \ at the end of the line and start the line with a
> tab...

A-ha!  I will give that a shot during a justifiable maintenance window.

> Hearbeat identifies the diffrent cluster-resources with the first line
> in the
> haresources config. In the example above the line:
>        ldirectord::ldirectord.cf \
> 
> This implies that if you want to have many diffrent resource-groups this
> first line must be diffrent for each group
> (an good idea is to have for example an IPaddr2-line first since you
> probably will have diffrent IPaddresses to you resource groups...)
> 
> 
> Anyway, in you case I think you would like to have only one group with
> many IPaddr2 line...
> No need to try to start ldirectord many times is it...?
> And of course in ldirectord.cd you have _all_ your services defined...

To clarify, in the end:

-ha.cf simply lists the pair of directors FQDNS
-haresources lists the primary director and its various IPaddr2 lines
for each virtual IP corresponding to each virtual service
-ldirectord.cf lists each virtual service specification
(address/port/node addresses/viability test paramaters/etc.)

?

Thanks, Mattias.

-- 
Nick Silkey | [email protected]
Senior Operating Systems Specialist
Electrical & Computer Engineering
The University of Texas at Austin
ENS 526W | 512.475.8284 | 0x35EB31E2


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