Module failure 

Why a replica did not come up.

A replica that fails its rollout is deleted at once and the controller tries again, so by the time anyone asks for its logs the instance is gone (or dying, and incus answers the console request with an error). The controller therefore reads the failed instance’s output before it deletes it, puts the last lines in the failure message (the deployment log, the service’s status) and keeps them here for app_logs, which shows them beside the live replicas’ logs.

Structs

FailedAttempt

The output of the last replica of a service that failed to come up.

Failures

The last failed attempt of each (stack, service).

Functions

explain

The failure of replica name with its last output in the message, and the attempt to keep. Called before the instance is deleted.

one_line

The last n non-empty lines of text, joined with | and cut to max characters (from the front: the end is what explains it).

replica_logs

Recent output of a service’s replicas (or one slot’s), by instance. A replica that is being replaced as this is asked, or whose output cannot be read, shows why in place of its text instead of failing the call.