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[eclipse.org-committers] Eclipse.org server upgrades: service interruptions
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Greetings,
From now until the year end we will be upgrading the server OS on all
the eclipse.org servers.
This is a huge task, but because we have a fully redundant setup,
we don't expect there to be any outages. However, some services, such
as Bugzilla, CVS and the Wiki, need to be put in "read-only" mode for
short periods while we switch from one backend server to the other. To
minimize impact, we'll use our standard maintenance window, Sunday
morning from 6:00am to 8:00am Eastern, to perform these switches.
I have outlined a rough upgrade plan on the wiki. The Key Dates section
is likely what will interest you most:
http://wiki.eclipse.org/index.php/SLES_10_Upgrade_Plan
Our top-two priorities for this upgrade are data integrity and service
availability. We'll be working hard to properly plan, stage, test,
retest each step of our upgrade so that all goes smoothly. We also have
contingency plans in place for our critical servers - such as not
upgrading a pair of redundant servers within the same week - should an
upgraded server fail.
The non-redundant servers, such as build.eclipse.org, will need to go
offline for several hours while the upgrade is performed. Project
vservers and the EclipseCON server are unaffected.
As we upgrade our backend MySQL servers, we'll be enabling an additional
slave server (for a total of 2) for the Bugzilla database. This should
eliminate the tremendous lag caused by locked tables when using a single
database server.
If you have any questions about this upgrade, or if the dates outlined
on the wiki page above cause major problems for your project, please let
me know.
Denis
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