Sametime High Availability problem using Round Robin DNS where at least one server is down for an extended period of time

There is an issue where people will begin having issues accessing Sametime if one server in a Sametime HA environment is down beyond a certain length of time when the Server Community DNS is set up as round robin.

Essentially either the clients or the servers “forget” about the downed server. You are OK for up to some number of days where they recognize that the server is a ST server but no longer available. After that some cache is cleared and this problem arises.

This is why normal HA works just fine (when a server goes down for just a few minutes or hours) the servers and / or the clients are able to ignore the proffered IP address since they are aware that the server is not longer responding.

If you are taking a server out of service for longer than a week (or the period within which you will be recycling all of the other servers in the community), remove the downed server from the round robin DNS until you are ready to put it back into service.

Posted under Lotus Domino, Work Portfolio

This post was written by Marc
on July 22, 2013 at 1:22 pm

New Tires for the CR-V from NTB

I have a 2009 CR-V.

Yesterday I decided to replace the tires at NTB (National Tire and Battery) and elected to buy some Cooper Discoverer LSX Plus tires.

I went to register the tires on the Cooper site and found that I have 3 with one DOT code  (UP2Y 1BT 4111) and 1 with a slightly different code ( UP2Y 1BT 4211). I’m pretty sure that this is fine. It tells me that the tires were made one week apart and that they were made about 2 years ago.

What I’m concerned about though is that my receipt from NTB shows a DOT number of UP9H CL7 1513. This tells me that they are claiming to have sold me a set of tires that was made a little less than 3 months ago.

Am I going to run into issues over this? i.e. if the tires decide to pull a Michelin and fail prematurely I suspect that this will affect any pro-rating that I receive.

Any advice on how or even if I need to do anything about this?

Posted under General

This post was written by Marc
on July 4, 2013 at 11:04 am