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Bare-metal troubleshooting

Start with machinactl metal list: look at LIFECYCLE, POWER and ERROR for the server. The ERROR column is the server's last_error, which records the last failed BMC call or provisioning step.

SymptomLikely cause and fix
deploy is refused with "TLS join listener is not enabled"Run machinactl bootstrap (sets MACHINA_CONTROLLER_TLS_ADDR), or set it by hand. MACHINA_METAL_ALLOW_HTTP_JOIN=1 lifts the check for experiments only.
A machine PXE-boots but exits to its diskIts MAC is not registered, or the server is not commissioning or deploying. Check the MAC format and machinactl metal list.
A machine never reaches the ramdisk although the override succeededThere was no power step (the BMC is unreachable: see last_error) or the firmware ignores the override. Try machinactl metal power ID cycle, or use boot_method: virtual_media.
The ramdisk reports a controller CA fingerprint mismatchIt reached a different controller, or a proxy that re-terminates TLS. Check MACHINA_PUBLIC_URL and anything in between.
image add ends failed with a mismatchThe file did not match the checksum and was deleted. Retry, or check the mirror.
deploy fails "not enough RAM to stage the image"The image is staged in RAM so it can be verified before writing. Give the machine more RAM or use a smaller image.
A server stays deploying after the OS is upIt did not join. On the node check cloud-init status and journalctl -u machina-agent, and that the TLS join listener is reachable. The host's join log shows each step.
A host joined but validation failedThe agent is not reachable on its address (firewall on 50051, or the join ran over plain http). See the host's join events.
discover finds BMCs but none accept a credentialWrong credentials, or the account is locked. It stops after three tries per BMC.
power cycle fails on an IPMI BMCHandled: the driver falls back to reset, then off and on; the response says which.
virtual-media says "no CD/DVD virtual media"The BMC exposes none for this system. Use PXE.
BMC details are mostly "not reported"The BMC has no Chassis, Thermal, Power, UpdateService or LogService resources under the standard paths. OEM-only data is not read.
The serial console closes at onceAnother session holds the BMC's SOL payload, SOL is disabled on the BMC (ipmitool sol set), or script or ipmitool is missing on the controller.
An auto-enrolled machine cannot be poweredIt has no BMC yet. Attach one with machinactl metal bmc-set.

Releasing a machine​

machinactl metal release SERVER_ID # allocated or deployed -> ready
machinactl metal lifecycle SERVER_ID retired