[Comtec Announce] [Database Cluster] Maintenance window 13th August 2016

[David Croft]

Please be advised of the following maintenance window scheduled on our
MySQL database cluster. Action may be required.

Start date: Saturday, 13th August 2016
Start time: 22:00 BST (UTC+0100)
End time: 14th August 02:00 BST (UTC+0100)

Purpose:

We will be migrating our primary database cluster
mysql1.db.uk.sargasso.net to new hardware and upgrading it to MySQL
version 5.6. IPv6 connections will also be enabled.

Services affected:

Shared web hosting using our database cluster.
Some customer portals including https://support.comtec.com/

Impact:

HIGH.

While we normally perform low-impact rolling upgrades, in this
instance we are taking the opportunity to move to new hardware to
provide an environment for continued growth and to upgrade to a new
major version.

The current cluster will be shut down during this maintenance window,
and the final data synchronised. The new cluster will then be tested
and made available approximately 30-45 minutes following the shutdown.

An IPv6 AAAA record will be added to the new DNS record only
(mysql1.db.as42579.net), so connections may be made over IPv6. To
minimise potential impact, the old DNS record
(mysql1.db.uk.sargasso.net) will be left as IPv4 only.

As this contains a major software version upgrade, this e-mail serves
as 30 days notice of a change to the technical functionality of the
Service that does not diminish the Service under clause 2.5 of the
Master Services Agreement.

Action Required:

1) Please ensure that you are using the hostname
"mysql1.db.uk.sargasso.net" or "mysql1.db.as42579.net" to access the
database and not any specific IP address (this has always been our
advice).

2) Please ensure that your software is compatible with MySQL 5.6

Comtec NOC is tracking this issue under ticket [#MEH-774-75672].

Regards,

David Croft

-- 
David Croft
Lead Engineer

Comtec Enterprises Ltd
Comtec House
46a Albert Road North
Reigate Industrial Estate
Reigate
Surrey RH2 9EL

Tel: 0845 899 1400
Fax: 0845 899 1401
www.comtec.com

For urgent operational issues please always contact noc at comtec.com
or 0845 899 1423 and not any named individual.