(non-standard-operations) add tier2,3 and 4 to computer shutdown #88
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| * Control System | ||
| yagan[13-20].cp.lsst.org | ||
| azar[02-03].cp.lsst.org |
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I think we now have control system dependencies to the /net/obs nfs mount on azar02 via the scriptqueue and scheduler, and taking this offline would take down the control system. If so, we should move azar02 to Tier 3 (but not azar03). @tribeiro can you confirm that is the case?
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I think at this point we can consider that we are running the system in degraded mode and won't be able to update the obs env.
Alternatively, we can move this functionality to azar1. I don't think it is worth keeping an additional node for this.
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There should be another tier between 3 and 4, which is supporting camera liveness (does not need the control network, but does require the camera clusters). this includes the switches, DAQs, and most CCS machines. |
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The tiers in addition to an order of shutdown, represent a threat level for the hardware, so adding another tier wouldn't change the end result since tier 3 is already a high threat level that requires to shutdown as much as possible (including the daqs). Tier 3 also requires coordination with "system owners" so that would be sufficient to wait for the warm-ups. |
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