wheels deploy lock

Deploy-lock management. The rolling wheels deploy flow acquires and releases a per-service lock automatically; these verbs expose manual escape hatches.

Verbs

Verb	Purpose
acquire	Manually take the lock.
release	Manually release the lock.
status	Report whether the lock is held and who holds it.

The lock

One file per service at /tmp/kamal_deploy_lock_<service>. Created by symlink for atomicity — if another deploy is running, the symlink creation fails and the verb errors. Released when wheels deploy exits (success or failure).

A stale lock after a crashed deploy blocks new deploys — use lock release to clear it. Always run lock status first to confirm it isn’t actually held by someone else.