nut-client

nut-client extension

Usage

Enable the extension in the machine configuration before installing Talos:

machine:
  install:
    extensions:
      - image: ghcr.io/siderolabs/nut-client:<VERSION>

Configure the extension via .machine.files You must replace upsmonHost and upsmonPasswd to match configuration on your nut server.
See upsd.users man page for details.

On Talos SHUTDOWNCMD must be /sbin/poweroff

machine:
  files:
    - path: /var/etc/nut/upsmon.conf
      permissions: 0o600
      op: create
      content: |-
        MONITOR ${upsmonHost} 1 remote ${upsmonPasswd} slave
        SHUTDOWNCMD "/sbin/poweroff"

Testing

Confirm extension service is running

$ talosctl service ext-nut-client
NODE     192.168.1.1
ID       ext-nut-client
STATE    Running
HEALTH   ?
EVENTS   [Running]: Started task ext-nut-client (PID 2263) for container ext-nut-client (59m59s ago)
         [Preparing]: Creating service runner (59m59s ago)
         [Preparing]: Running pre state (59m59s ago)
         [Waiting]: Waiting for service "cri" to be "up" (59m59s ago)
         [Waiting]: Waiting for service "cri" to be "up", network (1h0m0s ago)
         [Waiting]: Waiting for service "cri" to be registered, network (1h0m1s ago)
         [Waiting]: Waiting for service "containerd" to be "up", service "cri" to be registered, network (1h0m2s ago)
         [Waiting]: Waiting for service "containerd" to be "up", service "cri" to be "up", network (1h0m3s ago)

CAUTION this will power off all connected systems.

Trigger a 'Full System Shutdown' on the nut-server

# upsmon -c fsd

all connected upsmon clients should perform a full shutdown and power off.