[pca] Cluster, zones, noreboot.

[Filip Francis]

Dave,

If you want todo parallel patchen you need to edit /etc/patch/pdo.conf file.
That will make parallel patching to work on several zones at the same time
Filip

On 07/13/10 14:28, David Stark wrote:
> Hi all.
>
> Thanks Filip, Glen - I'd forgotten all about Update on Attach.
>
> It looks like Update On Attach is part of kernel patch 137137-09, 
> which we've actually got applied on some recently patched clusters. 
> The zoneadm man page lists the '-u' option on those hosts too, so it 
> looks like this should be usable on the next patching run.
> Since we've already got Parallel patching for zones, I'm not sure if 
> this will really save a lot of down time, though - is a zone 
> update-attach any faster than a normal patch run?
>
> Dave
>
> On 13/07/2010 13:05, Filip Francis wrote:
>> No unless you have a certain version off Solaris i think this is only
>> from version 10u7 or 10u8 that you have this option.
>> This is his problem.
>> The cluster will not do this for you it think this is scheduled in the
>> next release of sun cluster later this year
>> Filip
>>
>>
>> On 07/13/10 13:54, Glenn Satchell wrote:
>>> When a zone migrates back to a patched system, doesn't it normally
>>> update itself as it starts up the first time?
>>>
>>> Have a look at the zoneadm man page, in particular the attach and
>>> detach sub-commands. I don't know for sure, but Sun Cluster may be
>>> smart enough to do the right thing and use zoneadm attach -u to bring
>>> the zone up to date when it attaches to the patched system.
>>>
>>> Perhaps a quick chat with your local Sun SE to help plan things might
>>> be time well spent?
>>>
>>> regards,
>>> -glenn
>>>
>>> On 07/13/10 21:41, David Stark wrote:
>>>> On 13/07/2010 12:31, Filip Francis wrote:
>>>>> Hi there,
>>>>
>>>> Hi!
>>>>
>>>>> I have done already quit a few upgrades of sun clusters.
>>>>> Can you give me some more details on what version off cluster + 
>>>>> version
>>>>> off os.
>>>>
>>>> Sure. It's Sun Cluster 3.2 on Solaris 10 5/08. Mainly 2 node clusters,
>>>> but there's a 3 node and a 6 node as well. Mainly T5220 machines 
>>>> hooked
>>>> up to EMC Symmetrix storage. The hosts' / slices are all UFS, all the
>>>> zones and data filesystems are ZFS.
>>>>
>>>>> Regards
>>>>> Filip
>>>>
>>>> Cheers!
>>>> Dave
>>>>
>>>>> On 07/13/10 11:52, David Stark wrote:
>>>>>> Hi List.
>>>>>>
>>>>>> A bit off-topic, but PCA's involved, so I'm going to push my luck.
>>>>>>
>>>>>> We've got a number of Sun Cluster installs using (lots of) failover
>>>>>> zones and with no LiveUpgrade alt. boot space set up, which we 
>>>>>> need to
>>>>>> patch. If we were to patch the clusters node-by-node (including the
>>>>>> kernel patches that don't like zones being booted when they're
>>>>>> applied), the zones would fail over between the nodes and never get
>>>>>> patched themselves, and since kernel (and some other?) patches can't
>>>>>> be applied from inside zones we would end up in a situation where 
>>>>>> the
>>>>>> zones' patch databases are out of sync with the Global zone. I know
>>>>>> from very bitter experience that this is a Bad Thing, so to avoid 
>>>>>> that
>>>>>> we're currently bringing the clusters down to patch them. This
>>>>>> obviously isn't optimal - people expecting 100% uptime from the
>>>>>> clusters are naturally a bit annoyed at having their applications 
>>>>>> down
>>>>>> for several hours while we unleash the mighty PCA.
>>>>>>
>>>>>> So, to minimise downtime I'd like to apply the noreboot patches, 
>>>>>> say,
>>>>>> the night before, and have a more minimal patch run with the 
>>>>>> clusters
>>>>>> down. This brings me to the question:
>>>>>>
>>>>>> Has anyone ever had any problems with noreboot patches applied to 
>>>>>> live
>>>>>> systems? Any weirdness at all? I've patched plenty of test 
>>>>>> machines in
>>>>>> multi-user mode, but never busy production boxes - these are fairly
>>>>>> large Oracle and SAP environments for the most part.
>>>>>>
>>>>>> Anyone with experience patching Sun Cluster care to share any top
>>>>>> tips?
>>>>>>
>>>>>> Cheers!
>>>>>>
>>>>>> Dave
>>>>>>
>>>
>>>
>>>
>>
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