[gpfsug-discuss] CES - suspend a node and don't start smb/nfs at mmstartup/boot

Skylar Thompson skylar2 at uw.edu
Wed Nov 14 16:27:31 GMT 2018


Hi Heiner,

Try doing "mmces service stop -N <node-name>" and/or "mmces service disable
-N <node-name>". You'll definitely want the node suspended first, since I
don't think the service commands do an address migration first.

On Wed, Nov 14, 2018 at 04:20:12PM +0000, Billich Heinrich Rainer (PSI) wrote:
> Hello,
> 
> how can I prevent smb, ctdb, nfs (and object) to start when I reboot the node or restart gpfs on a suspended ces node?  Being able to do this would make updates much easier
> 
> With
> 
>      # mmces node suspend ???stop
> 
> I can move all IPs to other CES nodes and stop all CES services, what also releases the ces-shared-root-directory and allows to unmount the underlying filesystem.
> But after a reboot/restart only the IPs stay on the on the other nodes, the CES services start up. Hm, sometimes I would very much prefer the services to stay down as long as the nodes is suspended and to keep the node out of the CES cluster as much as possible.
> 
> I did not try rough things like just renaming smbd, this seems likely to create unwanted issues.
> 
> Thank you,
> 
> Cheers,
> 
> Heiner Billich
> --
> Paul Scherrer Institut
> Heiner Billich
> System Engineer Scientific Computing
> Science IT / High Performance Computing
> WHGA/106
> Forschungsstrasse 111
> 5232 Villigen PSI
> Switzerland
> 
> Phone +41 56 310 36 02
> heiner.billich at psi.ch<mailto:heiner.billich at psi.ch>
> https://www.psi.ch
> 
> 
> 
> From: <gpfsug-discuss-bounces at spectrumscale.org> on behalf of Madhu Konidena <madhu at corehive.com>
> Reply-To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
> Date: Sunday 11 November 2018 at 22:06
> To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
> Subject: Re: [gpfsug-discuss] If you're attending KubeCon'18
> 
> I will be there at both. Please stop by our booth at SC18 for a quick chat.
> 
> Madhu Konidena
> [cid:ii_d4d3894a4c2f4773]
> Madhu at CoreHive.com
> 
> 
> 
> On Nov 10, 2018, at 3:37 PM, Jon Bernard <jonbernard at gmail.com<mailto:jonbernard at gmail.com>> wrote:
> Hi Vasily,
> I will be at Kubecon with colleagues from Tower Research Capital (and at SC). We have a few hundred nodes across several Kubernetes clusters, most of them mounting Scale from the host.
> Jon
> On Fri, Oct 26, 2018, 5:58 PM Vasily Tarasov <vtarasov at us.ibm.com<mailto:vtarasov at us.ibm.com> wrote:
> Folks,   Please let me know if anyone is attending KubeCon'18 in Seattle this December (via private e-mail). We will be there and would like to meet in person with people that already use or consider using Kubernetes/Swarm/Mesos with Scale. The goal is to share experiences, problems, visions.   P.S. If you are not attending KubeCon, but are interested in the topic, shoot me an e-mail anyway.   Best, -- Vasily Tarasov, Research Staff Member, Storage Systems Research, IBM Research - Almaden
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-- 
-- Skylar Thompson (skylar2 at u.washington.edu)
-- Genome Sciences Department, System Administrator
-- Foege Building S046, (206)-685-7354
-- University of Washington School of Medicine



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