Thanks
that is what I shall work with for now, at least that way I dont need to worry
about changing the seed scripts. I guess a db dump just before the reinit would
be good enough for a rollback if something went wrong.
I will likely have to hand the perl script off to someone else, but at least it
can be automated. I think for now developers will have to skip a local sequoia
setup... Can Ant do this or does it have to be perl?
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Wed, 2 Jul 2008 09:01:54
-0700Subject: Re: [Sequoia] stored procedure creation/DB reseeding
Hi Adam, You would need to something like the following: 1.) Shut down the VDB
that you are going to re-initialize. 2.) Load data into one of the backends for
that VDB. 3.) Load the VDB and force initialization to that backend. This
resets the recovery log. 4.) Backup the backend once initialized. 5.) Transfer
the recovery log and dump (if necessary) to other controllers in the cluster.
6.) Restore the dump on each backend. 7. ) Enable all backends. You can
actually enable the first backend used for initialization as soon as the dump
is completed. This is a lot of steps as you can guess. I would recommend
scripting it in Perl if you can. Cheers, RobertOn 7/2/08 8:56 AM, "Adam
Purkiss" <[EMAIL PROTECTED]> wrote:
It is MySQL. True, but I thought if you reint a db then sequoia gets unhappy
and then you have the admin nightmare of orting out the mess. Or is there a
nice automatic way of dealing with this? When I tried to reint my single db
test setup sequoia certainly got very unhappy and I had to reinit and all
sorts. Is there somewhere to look for what you describe or could you explain
the steps that would be followed to do the below. For example : shutdown
databases... etc etc etc. thanks
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Wed, 2 Jul 2008 08:43:56
-0700Subject: Re: [Sequoia] stored procedure creation/DB reseedingHi Adam, Just
a question—wouldn’t it be easier to deploy directly to one database and then
re-init the cluster from that? You don’t mention your database type but
assuming it’s MySQL dump format this would be the easiest way. Sequoia does
not currently support that syntax fully. Cheers, RobertOn 7/2/08 8:01 AM,
"Adam Purkiss" <[EMAIL PROTECTED]> wrote:
The result of this may be a need to change how we deploy/redeploy databases but
I will ask anyway I have managed to get sequoia to work with our existing
mysql databases including it calls made to stored procedures which is great. I
have yet to try it on something other then my local box with more then one db
but that is a challenge for another day. Right now I am attempting to rework
our seed scripts to work through sequoia so when we redeploy and want to wipe
the database we can. I have taken out things like IF Exists calls (though it
would be nice if sequoia supported that) so I can recreate the tables fine.
However when I start on the stored procedures which change delimiter to $$ I
get the following error:
org.continuent.sequoia.common.exceptions.driver.DriverSQLException: Message of
cause: Failed to execute request CREATE PROCEDURE XXX(IN... because of
(org.continuent.sequoia.controller.requests.StoredProcedure cannot be cast to
org.continuent.sequoia.controller.requests.AbstractWriteRequest) Does this mean
that sequoia cannot be used to reseed, or is there something different I need
to do with the seed sql? I know I could just ignore the recreation of SPs and
views but my concern is that this is fine until one day we decide to change
one. I am looking for both short and long term solutions. So for example is
their an automated way I could get sequoia to rollback to the inital db state?
If I have changes to stored procedures is there a way without going through
sequoia to make the change that will not make sequoia unstable? Thoughts?
Options?
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