[gpfsug-discuss] CES IP addresses - multiple subnets, using groups

Mathias Dietz MDIETZ at de.ibm.com
Wed May 8 16:58:59 BST 2019


Hi Bob,

you also need to specify which ces groups a node can host:
mmchnode --ces-group vlan431 -N Node1,Node2 
mmchnode --ces-group vlan435 -N Node3 


Mit freundlichen Grüßen / Kind regards

Mathias Dietz

Spectrum Scale Development - Release Lead Architect (4.2.x)
Spectrum Scale RAS Architect
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From:   "Oesterlin, Robert" <Robert.Oesterlin at nuance.com>
To:     gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:   08/05/2019 16:31
Subject:        [gpfsug-discuss] CES IP addresses - multiple subnets, 
using groups
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Reference: 
https://www.ibm.com/support/knowledgecenter/en/STXKQY_5.0.2/com.ibm.spectrum.scale.v5r02.doc/bl1adm_configcesprotocolservipadd.htm
 
I have a 3 CES servers with IP addresses:
 
Node1 10.30.43.14 (netmask 255.255.255.224) export IP 10.30.43.25
Node2 10.30.43.24 (netmask 255.255.255.224) export IP 10.30.43.27
Node3 10.30.43.133 (netmask 255.255.255.224) export IP 10.30.43.135
 
Which means node 3 is on a different vlan. I want to assign export 
addresses to them and keep the export IPs on the correct vlan. This looks 
like it can be done with groups, but I?m not sure if I have the grouping 
right. I was considering the following:
 
mmces address add --ces-ip 10.30.43.25 --ces-group vlan431
mmces address add --ces-ip 10.30.43.27 --ces-group vlan431
mmces address add --ces-ip 10.30.43.135 --ces-group vlan435
 
Which should mean nodes in group ?vlan431? will get IPs 
10.30.43.25,10.30.43.27 and the node in group ?vlan435? will get IP 
10.30.43.135 (and will remain unassigned if that node goes down)
 
Do I have this right?
 
 
Bob Oesterlin
Sr Principal Storage Engineer, Nuance
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