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This page includes a list of to-do's to consider during maintenance periods (when the cluster is turned off).

Purpose

This checklist can be used for:

1) A list of things that require the cluster to be turned off. Or are tasks that are more safely done when the cluster is turned off, even if not strictly required.

2) A list of things to consider doing when the a clusters is being turned off / rebooted for other reasons.

Maintenance Checklist

Activity
category

Item/ topicWho knows if action possible or needed?
(Presumed Lulu, unless marked otherwise)		Notes or comments
P/TNetwork / switchesProject lead or ticket owner 
P/TDisk changes / swaps / repairsProject lead or ticket owner 
P/TAdd / remove nodesProject lead or ticket owner 
DMotherboard: BIOS / firmware updates (and why it's done...)

Michael (how get reminded/ asked?)

  • Ask for review of all clusters in a maintenance cycle
    • Or: Ask for each cluster within a cycle?

Risk-management consideration. Vs. expected benefit.

Q: Just head node?

Q: CAC: What do they do? (ex. Ananth)

DFirmware updates, including drives, cards, etc.Michael (how get reminded/ asked?) 
DScheraga only: Synology updatesMichael (how get reminded/ asked?)Any other "storage system"?

 

D

Kernel updates

  • Only security updates.
  • Account / password sync
  
D

OS Updates

  • Only security updates (via YUM)
  
D

UPS: Review and confirm settings

  • Any updates?
 Confirm thresholds make sense, especially as battery gets older.

Key:

P/T: Default answer is "no action". This is here in case a Project or Ticket has an impact on this topic, which is to be done during the maintenance work.

D: Discretion or decision required. May very well be, "nothing this time around".

Sequence taken during maintenance

· Schedule / notify representative / users

Evaluate hard drives

Verify backups

· Disable outside access

· Delete jobs

· Chkdsk

· Shutdown headnode & nodes

· Synology update - requires reboot. Safer with headnode off

· Reboot switches

· Boot synology

· Boot headnode

    o iSCSI config- (on startup) 5 sec ping for timeout, will change to 10 & 15

· Test UPS shutdown error

· Reboot anything that needs

· Boot nodes

· Enable access

· Send email

    • UPS config - 10 seconds poll,  

 

 

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