Thanks John!
Funnily enough playing with node classes is what sent me down this path.
I had a bunch of nodes defined (just over 1000) with a lower pagepool
than the default. I then started using nodeclasses to clean up the
config and I noticed that if you define a parameter with a nodeclass it
doesn't override any previously set values for nodes in the node class.
What I mean by that is if you do this:
- mmchconfig pagepool=256M -N n001
- add node n001 to nodeclass mynodeclass
- mmchconfig pagepool=256M -N mynodeclass
after the 2nd chconfig there is still a definition for pagepool=256M for
node n001. I tried to clean things up by doing "mmchconfig
pagepool=DEFAULT -N n001" however the default value of the pagepool in
our config is 1024M not the "1G" mmchconfig expects as the defualt value
so I wasn't able to remove the explicit definition of pagepool for n001.
What I ended up doing was an "mmchconfig pagepool=1024M -N n001" and
that removed the explicit definitions.
-Aaron
On 10/9/17 4:38 AM, John Hearns wrote:
Aaron,
The reply you just got her is absolutely the correct one.
However, its worth contributing something here. I have recently bene
dealing with the parameter verbsPorts – which is a list of the
interfaces which verbs should use. I found on our cluyster it was set to
use dual ports for all nodes, including servers, when only our servers
have dual ports. I will follow the advice below and make a global
change, then change back the configuration for the server.
It is worth looking though at mmllnodeclass –all
There is a rather rich set of nodeclasses, including clientNodes
managerNodes nonNsdNodes nonQuorumNodes
So if you want to make changes to a certain type of node in your cluster
you will be able to achieve it using nodeclasses.
Bond, James Bond
[email protected]
*From:* [email protected]
[mailto:[email protected]] *On Behalf Of *IBM
Spectrum Scale
*Sent:* Saturday, October 07, 2017 5:07 AM
*To:* gpfsug main discussion list <[email protected]>
*Cc:* [email protected]
*Subject:* Re: [gpfsug-discuss] changing default configuration values
Hi Aaron,
The default value applies to all nodes in the cluster. Thus changing it
will change all nodes in the cluster. You need to run mmchconfig to
customize the node override again.
Regards, The Spectrum Scale (GPFS) team
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Inactive hide details for Aaron Knister ---10/06/2017 06:30:20 PM---Is
there a way to change the default value of a configuratiAaron Knister
---10/06/2017 06:30:20 PM---Is there a way to change the default value
of a configuration option without overriding any overrid
From: Aaron Knister <[email protected]
<mailto:[email protected]>>
To: gpfsug main discussion list <[email protected]
<mailto:[email protected]>>
Date: 10/06/2017 06:30 PM
Subject: [gpfsug-discuss] changing default configuration values
Sent by: [email protected]
<mailto:[email protected]>
------------------------------------------------------------------------
Is there a way to change the default value of a configuration option
without overriding any overrides in place?
Take the following situation:
- I set parameter foo=bar for all nodes (mmchconfig foo=bar)
- I set parameter foo to baz for a few nodes (mmchconfig foo=baz -N
n001,n002)
Is there a way to then set the default value of foo to qux without
changing the value of foo for nodes n001 and n002?
-Aaron
--
Aaron Knister
NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776
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NASA Center for Climate Simulation (Code 606.2)
Goddard Space Flight Center
(301) 286-2776
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