Hi Wahid, All,
Given the proposed timing of the ATLS LFC downtime, I will delay our
upgrade to coincide with this. At least I now have a better idea of how
to carry out the upgrade when we do so.
One more question since there is now a breathing space. I guess I might
as well go straight to the EMI release, provided this is possible while
the pool nodes are still on gLite. Is this the right thing to do? When
installing from the gLite repository I get DPM 1.8.2, while as far as I
can see only DPM 1.8.1 is available from EMI. Am I missing something? I
don't find the EGI site very intuitive to navigate.
Cheers
Ben
On 19/01/12 14:40, Wahid Bhimji wrote:
>
> OK Ben -
>
> given the weight of concurring - and given I don't recall that I for
> sure have tried this then I am not confident enough to buck the trend.
>
> Perhaps you should indeed migrate over and then run yaim once only with
> the new setup as desired.
>
> I am determined to try this now and see whether it does indeed cause
> weird behaviour so will report back but maybe not on your timescales.
>
> Wahid
>
> On 19 Jan 2012, at 13:57, Sam Skipsey wrote:
>
>> I concur with Matt and Ewan.
>>
>> An hour or so of downtime is not worth the risk.
>>
>> Sam
>>
>> On 19 January 2012 13:50, Matt Doidge <[log in to unmask]
>> <mailto:[log in to unmask]>> wrote:
>>
>> > I wouldn't risk it, and while I never 100% proved it, I'm
>> > moderately sure that running YAIM on a machine with a
>> > temporary name/IP address was one of the things that gave
>> > me so much grief when I tried this a while back. Some of
>> > the mysql permissions are done by hostname, and it doesn't
>> > always seem to use 'localhost'.
>> >
>> > I would be safe, declare a long enough downtime, and make
>> > sure the old machine is well out of the way before you bring
>> > the new one up, and give it the correct hostname from the
>> > get-go. Also, bear in mind that doing a database dump/reload
>> > takes a while, so it's not like you're going to be able to
>> > switch quickly from the old box to the new box anyway.
>>
>> I agree with Ewan, I'm not sure the hour or two of reduced downtime is
>> worth the risk of things "going wierd" (and that's all you're going to
>> save provided everything goes to plan). I've also seen wierd behaviour
>> on boxes that I thought might have been caused by running yaim when it
>> had the wrong hostname/IP.
>>
>> Cheers, and Good Luck!
>> Matt
>>
>>
>
>
> ------------------------------------------------------------------------
>
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--
Dr Ben Waugh Tel. +44 (0)20 7679 7223
Dept of Physics and Astronomy Internal: 37223
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