`mqtt2vl` is a relatively simple service I developed to read log
messages from an MQTT topic (i.e. those published by ESPHome devices)
and stream them to Victoria Logs over HTTPS.
Moving the shell command to an external script allows me to update it
without having to restart Home Assistant.
Including the SSH private key in the Secret not only allows it to be
managed by Kubernetes, but also works around a permissions issue when
storing the key in the `/config` volume. The `ssh` command refuses to
use a key file with write permission for the group or other fields, but
the Kubelet sets `g=rw` when `fsGroup` is set on the pod.
Editing `configuration.yaml` et al. using `vi` via `kubectl exec` is
rather tedious, since the version of `vi` in the *home-assistant*
container image is very rudimentary. Thus, I think it would be better
to use a ConfigMap to store the manually-edited YAML files, so I can
edit them with my regular editor on my desktop. For this to work, the
ConfigMap has to be mounted as a directory rather than as individual
files (using `subPath`), as otherwise the pod would have to be restarted
every time one of the files is updated.
Dustin