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TOC

See also

• 1) CCB High Performance Computers (HPC)

Difference from other cluster

Duo has been installed but not enabled now.

• Chemistry IT staff only: (/etc/ssh/sshd_config keeps original, we need modify this to make duo work, see duo documents)

Password lockout is enabled (Users can be locked out of their account if 20 of incorrect passwords are entered, The account will be unlocked after 600 seconds)

Iptables is enabled.

Node information

One can look up the ages of the processors, along with more technical information at at Wikipedia, which itself links to Intel's information for each processor:

• https://en.wikipedia.org/wiki/List_of_Intel_Xeon_microprocessors

Software on this cluster

Maintenance records

Collum cluster previous maintenance records

Abruna cluster previous maintenance records

3/4/16 - noting that the DSBF-DE motherboard has a v1007 update, but not worth the trouble for the age of the machines. X9DRT-F has a 3.2 upgrade from 3.0, can do when nodes free. - meh26

3/10/16-3/11/16 - updated X9DRT-F motherboards from 3.0 to 3.2 during downtime due to headnode drive replacement resyncing. - meh26

3/16/16 - updated IPMI card firmware from 2.0 to 3.0 - meh26

8/2/2016: Lulu: No firmware update from Michael. There are no security updates available via YUM. One hard drive (sda) is failing (smartctl found 30 errors). Forced fsck, no errors found. Modified /etc/ssh/sshd_config to keep idle ssh connection alive.

11/1/2016: Lulu: No firmware update from Michael. There are no security updates available via YUM. One hard drive (sda) is failing. Backup the root partition by ddimage .

2/5/2017: Lulu: Collum and Abruna cluster have been merged into "CLAW" cluster in Nov 2016. There was power outrage on 2/4 Saturday.  No firmware update. Delete all running or queued jobs. No errors on hard drives. Forced fsck.

5/2/2017: Lulu: No firmware update. Forced fsck.

8/1/2017: Lulu: No firmware update from Michael. No errors on hard drives. Forced fsck.

2/6/2018: Lulu: No firmware update from Michael. No errors on hard drives. Forced fsck. No yum security updates.

5/1/2018: Lulu: No firmware update from Michael. No errors on hard drives.

8/7/2018: Michael:The firmware on the Z8PE-D12 motherboard in hda004-hda009 and dbc004-dbc006 was strangely updated by Asus in the last few weeks to cover the Meltdown/Spectre vulnerabilities. He has  done hda005, hda006, hda008, hda009, dbc004, dbc005, and dbc006. hda007 was not posting and I didn’t feel like fighting it – a problem for another day. hda004 was sent to CAC, so how that update gets done should be discussed.

8/7/2018: Lulu:  No errors on hard drives. Forced fsck. No yum security updates.

11/6/2018: Lulu: No firmware update from Michael. No errors on hard drives. No yum security updates.

2/5/2019: Lulu: No firmware update from Michael. No errors on hard drives. No yum security updates. Forced fsck. hda005 didn't passed memory test. Then it cannot power on.

5/7/2019: Lulu: No firmware update from Michael. No errors on hard drives. No yum security updates. rl003 cannot be powered on (by power button). hda005 didn't passed memory test. Then it cannot power on.

8/6/2019: Lulu: Force fsck. No firmware update from Michael. No errors on hard drives. No yum security updates. hda005 didn't passed memory test. bw001 and headnode power button affect each other. if shutdown (even by command line) / power on bw001, it will shutdown /power on head node. Michael changed power strip but does not help.

11/5/2019: Lulu: No firmware update from Michael. No errors on hard drives. No yum security updates. hda005 didn't passed memory test. bw001 and headnode power issue still existed.

2/4/2020: Lulu: Forced fsck. No errors on hard drives. No yum security updates. hda005 didn't passed memory test. bw001 and headnode power issue still existed.