Hi All, I’m fielding an worrisome emergency situation where a set of (2) stacked switches (serving the MGMT & SAN networks) has partially failed (one of the stack members was ejected).
Here’s what I’ve got: * The Xen hosts 2 MGMT NICs are bonded (active-passive) and connected to both switches * The Xen hosts 2 SAN NICs are NOT bonded and connected to both switches * PUB/GUEST NICs are connected to a different set of stacked switches (and are fine) Amazingly CloudStack has survived (guest VMs are still running, there’s been no disk issues). However I’ve got one compute-cluster (of 6 Xen hosts) in an alert state (as the pool master is affected) in the CloudStack UI (and cannot manage guests there) and I cannot get to their MGMT interfaces (going to hop on the hosts today and get more intel). A replacement switch is arriving in 24 hours & I’m preparing the switch-swap process. I’d REALLY like to shut everything down (guest VM’s) before mucking about with the switch-stack serving the SAN network, but I think I have to get to the host MGMT NICs sorted first (my suspicion is that the bonded MGMT NICS haven’t failed over – due t the nature of the switch failure maybe? – I’m considering pulling the MGMT NIC connections on the failed switch to see if I can get a path back). Anyway, not really much of an ask here, talking myself through it as I ride the tiger. Thanks. David David Merrill Senior Systems Engineer, Managed and Private/Hybrid Cloud Services OTELCO 92 Oak Street, Portland ME 04101 office 207.772.5678<callto:207.772.5678> www.otelco.com<http://www.otelco.com>/business/managed-services Confidentiality Message The information contained in this e-mail transmission may be confidential and legally privileged. If you are not the intended recipient, you are notified that any dissemination, distribution, copying or other use of this information, including attachments, is prohibited. If you received this message in error, please call me at 207.772.5678<callto:207.772.5678> so this error can be corrected.
