Post #160,981
6/22/04 6:59:33 AM
|
all nodes should separate
if the cluster goes away, a machine should operate with its apps as a standalone until issued instructions to do something else. It did crash, splat in the dirt, in production. Luckily in a maintenace window. ANy box homing applications as part of a cluster should remain running if the lock goes away, not kernel panic.
thanx,
bill
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #160,990
6/22/04 9:41:39 AM
|
Nice theory
Reality is different.
An application CANNOT continue running in a cluster environment without a lock manager. Other apps can be changing the data out from under it on the disk.
While a graceful abort of particular applications would be nice, it is not likely. This is because without the lock manager, you have essentially pulled the cable from the disk. Sometime this is handleable, sometime this is not.
|
Post #161,004
6/22/04 11:03:01 AM
|
it should do the following
stop transactions, disasociate from the cluster resume processing stand alone. If it cannot do that it is pretty useless. I will be fixing this.
thanx,
bill
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #161,008
6/22/04 11:34:35 AM
|
Are all nodes full peers?
ie: Is there a master node that farms out work to the clusters? The system I described worked that way. Yes, your master then becomes a single point of failure, but you can add/drop nodes on the fly and it registers them and starts sending work. Build the master with good hot-swap redundancy and add cheap compute nodes as needed.
===
Implicitly condoning stupidity since 2001.
|
Post #161,009
6/22/04 11:40:34 AM
|
different setup
2 applications run on 2 boxes sharing a single set of disks, both apps can failover to the other box.
thanx,
bill
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #161,013
6/22/04 11:59:00 AM
|
You've described exactly what...
Microsoft's "WolfPack" was supposed to do. Never did. Still doesn't.
Oh well. Good luck.
If it were myself, I'd have a Primary & Secondary Master adding cheap compute nodes. Scalable, usually fast and dependable. Seperate the compute nodes to a seperate LAN, as cluster traffic gets a bit busy from time to time.
I'd do bonding with those 2 or 4 ports NICS hanging around from INtel and (formerly) Adaptec. Makes life much happier.
--
[link|mailto:greg@gregfolkert.net|greg],
[link|http://www.iwethey.org/ed_curry|REMEMBER ED CURRY!] @ iwethey
Heard near the SCOG employee entry/exit way:
Security: We got another Mass Exodus Doorway Jam.
|
Post #161,034
6/22/04 1:06:36 PM
|
Alternatively...
...you could get a Real Clustering OS instead of messing about with toys like UNIX.
Peter
[link|http://www.debian.org|Shill For Hire]
[link|http://www.kuro5hin.org|There is no K5 Cabal]
[link|http://guildenstern.dyndns.org|Blog]
|
Post #161,046
6/22/04 1:38:46 PM
|
I could, if I could get a real multithreaded OS
that ran on something other than wintel. Unfortunately the stuff I support wont even be ported from HPUX.
thanx,
bill
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #161,069
6/22/04 3:29:35 PM
|
You want VMS. You just don't know it yet.
Peter
[link|http://www.debian.org|Shill For Hire]
[link|http://www.kuro5hin.org|There is no K5 Cabal]
[link|http://guildenstern.dyndns.org|Blog]
|
Post #161,100
6/22/04 6:01:14 PM
|
40k a month, no thanx, took one out of there 2 years ago
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #161,102
6/22/04 6:06:42 PM
|
40k a month? WTF for?
Did it have the "cluster of nubile lovelies who have your credit card number and an internet connection" option?
Peter
[link|http://www.debian.org|Shill For Hire]
[link|http://www.kuro5hin.org|There is no K5 Cabal]
[link|http://guildenstern.dyndns.org|Blog]
|
Post #161,104
6/22/04 6:17:47 PM
|
lease with the supplier(big ass telco), no support at all
and over here the people who know how to drive one are getting thin on the ground.
thanx,
bill
Anchorage AK: House for sale 3 bed 1 bath 1440 sq feet huge lot near Cheney Lake 175K FSBO 813.273.3518
I wondered what Darwinian moment had to effect itself before we devolved from children flying paper flags in the sky to half formed creatures thundering in a wall of horns down the road to Roncevaux. James Lee Burke
questions, help? [link|mailto:pappas@catholic.org|email pappas at catholic.org]
|
Post #161,032
6/22/04 12:47:09 PM
|
"My god, it's full of peers!"
-drl
|
