Shouldn't be a problem - how often do you restart your squid?
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Ian Collier [log in to unmask]
RAL Tier1 Fabric Team
R89 F18, STFC Rutherford Appleton Laboratory
DIDCOT OX11 0QX UK
+44 (0)1235 445440 +44 (0)7866 510075
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On 1 Feb 2012, at 14:44, John Bland wrote:
> Maybe our Frontier is out of date or something but its startup script wipes the caches every time it is run. How does that fit in with a CVMFS cache? Are you wiping your CVMFS cache every time squid is restarted?
>
> John
>
> On 01/02/2012 14:34, Mark Slater wrote:
>> Hiya,
>>
>> I did exactly as Sam says for Bham when setting up CVMFS: Just about to put
>> in a new SQUID server for it then realised I could probably get away with
>> just using the Frontier one :) Not had any problems so far (with that at
>> least...)!
>>
>> Thanks,
>>
>> Mark
>>
>>
>> On 31/01/2012 20:36, Sam Skipsey wrote:
>>> Certainly, we run a combined CVMFS/ATLAS Frontier squid at Glasgow, with
>>> no problems at all.
>>>
>>> I think that most sites with a Frontier squid added CVMFS to that rather
>>> than commissioning a new one, so I suspect we're not unusual in this.
>>>
>>> Sam
>>>
>>> On 31 January 2012 19:19, Alastair Dewhurst <[log in to unmask]
>>> <mailto:[log in to unmask]>> wrote:
>>>
>>> Hello
>>>
>>> I think that most sites have squids of some type (be it for cvmfs or
>>> Frontier for ATLAS, CMS, or LHCb). Many sites (not just in the UK)
>>> have wondered if it is possible to combine these squids and from a
>>> load point of view this should be fine. However having not done this
>>> myself (as the Tier 1 keeps all it's services separate for the moment)
>>> I don't feel like I am in a good position to advise other sites what
>>> to do.
>>>
>>> Therefore if anyone has tried sharing ATLAS and CMS Frontier squids,
>>> sharing Frontier and CVMFS squids or doing anything cunning with
>>> failover should their primary squid go wrong I would be interested to
>>> hear. I will be putting the useful information I compile on to a WLCG
>>> twiki page. Even if you tried things and it didn't work it may still
>>> be a useful starting point. ATLAS have asked me to test this so I am
>>> trying to learn from other peoples mistakes first!
>>>
>>> Thanks
>>>
>>> Alastair
>>>
>>>
>>
>
>
> --
> John Bland [log in to unmask]
> System Administrator office: 220
> High Energy Physics Division tel (int): 42911
> Oliver Lodge Laboratory tel (ext): +44 (0)151 794 2911
> University of Liverpool http://www.liv.ac.uk/physics/hep/
> "I canna change the laws of physics, Captain!"
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