Add CSv3 cluster operations doc (add-node, resize, cordon, drain)#17
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Add CSv3 cluster operations doc (add-node, resize, cordon, drain)#17lvangool wants to merge 1 commit into
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CSv3 (K3s) had no customer-facing docs for day-to-day cluster operations; only CSv2/Maestro equivalents existed. A trial customer on HS #33547 was blocked trying to resize, drain, and add nodes. Adds build-and-config/3/cluster-operations.mdx documenting all four operations, including the dashboard-only nature (no cx/API), async timeline behaviour, preconditions (healthy control-plane for cordon/drain; replication guards for scale-down), the lack of in-place vertical resize, and the exact error strings the platform surfaces. All behaviours verified against central source. Linear: SUP-1009 Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Adds
build-and-config/3/cluster-operations.mdxdocumenting the four CSv3 (K3s) cluster operations:Cloud 66 cannot connect to at least one of your stack servers...,Cannot fetch agent_join_token..., etc.) and the "failed scale-ups don't auto-retry" caveat.kubectl cordonvia the dashboard, 5-min timeout, healthy-control-plane precondition.kubectl drainvia the dashboard, 30-min timeout, PDB/DaemonSet semantics, and timeout troubleshooting.A prominent Callout notes all four are dashboard-only (no
cxcommand, no public API) and that customers can drop tokubectlwith a downloaded kubeconfig.Why
CSv3 had zero customer-facing docs for these operations — only CSv2/Maestro equivalents. A trial customer on HS #33547 was blocked: "unable to figure out how to resize the cluster, couldn't determine the correct procedure to drain... adding to the cluster repeatedly errored without clear guidance."
Verification
Every behaviour, precondition, and error string was verified against central source code (
server_pool.rb,csv3_k3s_clusters/cluster_action_utils.rb,domain/services/csv3/server.rb,operations/services/csv3/server/{drain,cordon}.rb,clusters_controller.rb,clusters/pools_controller.rb) rather than written from assumption.Linear
Test plan
yarn validate:mdxpasses/3/) docs; tables and Callouts displaymainbefore merge (code can drift)🤖 Generated with Claude Code