configmap-reload is a simple binary to trigger a reload when Kubernetes ConfigMaps are updated. It watches mounted volume dirs and notifies the target process that the config map has been changed. It currently only supports sending an HTTP request, but in future it is expected to support sending OS (e.g. SIGHUP) once Kubernetes supports pod PID namespaces.
It is available as a Docker image at https://hub.docker.com/r/jimmidyson/configmap-reload
Usage of ./out/configmap-reload:
-volume-dir value
the config map volume directory to watch for updates; may be used multiple times
-web.listen-address string
address to listen on for web interface and telemetry. (default ":9533")
-web.telemetry-path string
path under which to expose metrics. (default "/metrics")
-webhook-method string
the HTTP method url to use to send the webhook (default "POST")
-webhook-status-code int
the HTTP status code indicating successful triggering of reload (default 200)
-webhook-url string
the url to send a request to when the specified config map volume directory has been updated
-webhook-retries integer
the amount of times to retry the webhook reload request
This project is Apache Licensed