SystemDrive Free Space TSG: GMACache connectivity pointer + at-scale Tier 1 fan-out#308
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…Tier 1 fan-out Follow-up to the merged TSG, addressing two reviewer asks: - Network engineer: name the connectivity to restore for a backed-up GMACache (outbound HTTPS/443 to the Azure Arc and Azure Local endpoints, the firewall requirements doc, and azcmagent show), so it is actionable without a second TSG. - Partner/SI: add an at-scale note that fans the Tier 1 reclamation across all nodes in one Invoke-Command (WinSxS example), with the Tier 1b update-in-progress caveat. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Pull request overview
This PR updates the Troubleshooting-Test-SystemDrive-Free-Space TSG to close two usability gaps: making the C:\GMACache “restore connectivity” guidance concrete (Arc/Azure Local outbound requirements + how to confirm Arc connectivity) and adding a cluster-wide “fan-out” pattern for Tier 1 cleanup to support at-scale execution.
Changes:
- Added guidance and an example for running Tier 1 reclamation across all cluster nodes via
Invoke-Command. - Expanded the
C:\GMACachenote with explicit outbound HTTPS (TCP 443) requirements, a Microsoft Learn link, and an Arc connectivity validation pointer.
- Tier 1 fan-out: add -ThrottleLimit 2 so the IO/CPU-intensive cleanup does not spike
every node at once, and return a per-node {Node, ExitCode} object (0 = succeeded)
instead of discarding output, so operators can verify completion.
- GMACache Arc check: use the JSON output per repo convention,
(azcmagent show -j | ConvertFrom-Json).status, instead of parsing the human-readable
"Agent Status: Connected" text. The azcmagent JSON key is `status` (CLI reference;
display name "Agent Status"), not connectionStatus.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Small follow-up to the merged Test System Drive Free Space TSG (#302), addressing two usability gaps:
GMACache connectivity, made actionable. The Tier 3 note said to "restore outbound connectivity" for a backed-up
GMACachebut did not say which. It now names it: outbound HTTPS (TCP 443) to the Azure Arc and Azure Local service endpoints, links the firewall and outbound connectivity requirements, and points atazcmagent showto confirm the Arc agent is connected. A network engineer can act on it without opening a second TSG.At-scale Tier 1 fan-out. Adds a note that the Tier 1 reclamation can be run across every machine in one
Invoke-Command -ComputerName (Get-ClusterNode).Name(WinSxS example), instead of node by node, with the existing Tier 1b caveat (do not fan out the Windows Update cache clear while an update is in progress).No change to the existing steps; these are additive. Lint: Grade A (structure, fences, relative links all pass).
INTERNAL USE ONLY -- findings must be independently validated before action.