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Add structured daemon lifecycle logs

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VM start, image build, and network/setup failures were hard to diagnose because bangerd emitted almost no lifecycle logs and the Firecracker SDK logger was discarded. This adds a daemon-wide JSON logger with configurable log level so failures leave breadcrumbs instead of only side effects.

Log the main daemon and VM lifecycle stages, preserve raw Firecracker and image-build helper output in dedicated files, and include those log paths in daemon status and returned errors. Bridge SDK logrus output into the daemon logger at debug level so low-level Firecracker diagnostics are available without making normal info logs unreadable.

Validation: go test ./... and make build. Left unrelated worktree changes out of this commit, including internal/api/types.go, the deleted shell scripts, and my-rootfs.ext4.
This commit is contained in:
Thales Maciel 2026-03-16 16:16:28 -03:00
parent 5018bc6170
commit 644e60d739
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GPG key ID: 33112E6833C34679
13 changed files with 746 additions and 31 deletions
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4
internal/cli/banger.go
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@ -61,10 +61,10 @@ func newDaemonCommand() *cobra.Command {
}
ping, pingErr := rpc.Call[api.PingResult](cmd.Context(), layout.SocketPath, "ping", api.Empty{})
if pingErr != nil {
_, err = fmt.Fprintf(cmd.OutOrStdout(), "stopped\nsocket: %s\n", layout.SocketPath)
_, err = fmt.Fprintf(cmd.OutOrStdout(), "stopped\nsocket: %s\nlog: %s\n", layout.SocketPath, layout.DaemonLog)
return err
}
_, err = fmt.Fprintf(cmd.OutOrStdout(), "running\npid: %d\nsocket: %s\n", ping.PID, layout.SocketPath)
_, err = fmt.Fprintf(cmd.OutOrStdout(), "running\npid: %d\nsocket: %s\nlog: %s\n", ping.PID, layout.SocketPath, layout.DaemonLog)
return err
},
},