I admit I didn’t do a whole lot of troubleshooting. We don’t run NFS so I can’t speak about that.
Initially the server looked like it came back ok, albeit “Node starting up..” was observed in the output of mmlscluster –ces. At that time I was not sure if that was a) expected behaviour and/or b) related to GPFS 4.2.1-2. Once the node went back into service I had no complaints from customers that they faced any connectivity issues. The next morning I shut down a second CES node in order to upgrade it, but I observed that the first once went into a failed state (might have been a nasty coincidence!): [root@icgpfs-ces1 yum.repos.d]# mmces state show -a NODE AUTH AUTH_OBJ NETWORK NFS OBJ SMB CES icgpfs-ces1 FAILED DISABLED HEALTHY DISABLED DISABLED DEPEND STARTING icgpfs-ces2 DEPEND DISABLED SUSPENDED DEPEND DEPEND DEPEND DEPEND icgpfs-ces3 HEALTHY DISABLED HEALTHY DISABLED DISABLED HEALTHY HEALTHY icgpfs-ces4 HEALTHY DISABLED HEALTHY DISABLED DISABLED HEALTHY HEALTHY (Where ICGPFS-CES1 was the node running 7.3). Also in mmces event show –N icgpfs-ces1 –time day the following error was logged about twice per minute: icgpfs-ces1 2016-12-06 06:32:04.968269 GMT wnbd_restart INFO WINBINDD process was not running. Trying to start it I moved the CES IP from icgpfs-ces2 to icgpfs-ces3 prior to suspending –ces2. It was about that point I decided to abandon the planned upgrade of –ces2, resume the node and then suspend –ces1. Attempts to downgrade the Kernel/OS/redhat-release RPM back to 7.2 worked well, except when I tried to start CES again and the node reported “Node failed”. I then rebuilt it completely, restored it to the cluster and it appears to be fine. Sorry I can’t be any more specific than that but I hope it helps. Thanks Richard From: [email protected] [mailto:[email protected]] On Behalf Of Ravi K Komanduri Sent: 07 December 2016 06:46 To: [email protected] Cc: [email protected] Subject: Re: [gpfsug-discuss] CES ON RHEL7.3 Sobey, Could you mention the problems that you have faced on CES env for RH 7.3. Is it related to the Kernel or in Ganesha environment ? Your thoughts/inputs would help us in fixing the same. Currently working on the CES environment on RH 7.3 support side. With Regards, Ravi K Komanduri GPFS team IBM From: "Sobey, Richard A" <[email protected]<mailto:[email protected]>> To: "'[email protected]'" <[email protected]<mailto:[email protected]>> Date: 12/07/2016 11:59 AM Subject: [gpfsug-discuss] CES ON RHEL7.3 Sent by: [email protected]<mailto:[email protected]> ________________________________ A word of wisdom: do not try and run CES on RHEL 7.3 ☺Although it appears to work, a few things break and it becomes a bit unpredictable as I found out the hard way. I didn’t intend to run 7.3 of course as I knew it wasn’t supported. Richard_______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
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