Everything That Cost Us a Day Returned Success: Nine Versions of esx_ready.sh on a Live Fleet
One day, three fires, nine versions of esx_ready.sh on a live VCF 9.1.1 fleet, and nothing crashed: an upgrade that reported success and moved nothing, a cluster leave that released no disks, a depot staged onto the vSAN cache disk, a retried SDDC Manager task reading stale inventory. The build gate VCF 9.1.1 enforces, the chain of vSAN disk ownership, the feature that had to be deleted, and the stub harness that turned every failure into a test before its fix shipped.
