Hm, you can change the host name of a Scale node. I've done that a while ago on one or two clusters.
>From what I remember I'd follow these steps: 1. Upgrade the OS configuring/using the old IP addr/hostname (2. Reinstall Scale) (3. Replay the cluster data on the node) 4. Create an interface with the new IP address on the node (not necessarily connected) 5. Ensure the node is not required for quorum and has currently no mgr role. You might want to stop Scale on the node. 5. mmchnode -N <legacy_name> --daemon-interface <new_name> ; mmchnode -N <legacy_name> --admin-interface <new_name>. Now the node has kind of disappeared, if the new IF is not yet functional, until you bring that IF up (6.) (6. Activate connection to other cluster nodes via new IF) 2. and 3. are required if scale was removed / the system was re-set up from scratch 6. is required if the new IP connection config.ed in 4 is not operational at first (e.g. not yet linked, or routing not yet active, ...) Et voila, the server should be happy again, if stopped before, start up Scale and check. No warranties, But that's how I'd try. As usual: if messing with IP config, be sure to have a back door to the system in case you ground the OS network config . Mit freundlichen Grüßen / Kind regards Dr. Uwe Falke IT Specialist High Performance Computing Services / Integrated Technology Services / Data Center Services ------------------------------------------------------------------------------------------------------------------------------------------- IBM Deutschland Rathausstr. 7 09111 Chemnitz Phone: +49 371 6978 2165 Mobile: +49 175 575 2877 E-Mail: uwefa...@de.ibm.com ------------------------------------------------------------------------------------------------------------------------------------------- IBM Deutschland Business & Technology Services GmbH / Geschäftsführung: Thomas Wolter, Sven Schooß Sitz der Gesellschaft: Ehningen / Registergericht: Amtsgericht Stuttgart, HRB 17122 From: John Hearns <john.hea...@asml.com> To: gpfsug main discussion list <gpfsug-discuss@spectrumscale.org> Date: 04/04/2018 21:33 Subject: [gpfsug-discuss] Dual server NSDs - change of hostname Sent by: gpfsug-discuss-boun...@spectrumscale.org Following up from my previous email (I should reply to that email I know) What we really want to achieve is changing the FQDN of an existing server. The server will be reinstalled with an updated OS (RHEL 6-à RHEL 7) During the move we wish to change the domain name of the server. So we will be taking the server offline and bringing the same physical server back up with a new domain name. Has anyone done a procedure like this? Thankyou -- The information contained in this communication and any attachments is confidential and may be privileged, and is for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. Unless explicitly stated otherwise in the body of this communication or the attachment thereto (if any), the information is provided on an AS-IS basis without any express or implied warranties or liabilities. To the extent you are relying on this information, you are doing so at your own risk. If you are not the intended recipient, please notify the sender immediately by replying to this message and destroy all copies of this message and any attachments. Neither the sender nor the company/group of companies he or she represents shall be liable for the proper and complete transmission of the information contained in this communication, or for any delay in its receipt. _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss