Kubernetes Config (ConfigMap and Secret) Reloader

This progect - based on https://github.com/jimmidyson/configmap-reload and https://github.com/prometheus-operator/prometheus-operator/pkgs/container/prometheus-config-reloader

config-reloader is a simple binary to trigger a reload when Kubernetes ConfigMaps or Secrets are updated. It watches mounted volume dirs and notifies the target process changed files on dirs. If changes exist - send webhook.

Features

Send webook if files in dirs changed (if configmap or secret have been changed)
Control many dirs
Unarchive .gz archive to file and update file, if .gz has been changed
Init mode (stop after unarchive)
Prometheus metrics

It is available as a Docker image at ghcr.io/banzaicloud/config-reloader:latest

Usage

Usage of ./out/config-reloader:
  -dir-for-unarchive string
        Directory where the archives will be unpacked (default "/tmp/unarchive")
  -init-mode
        Init mode for unarchive files. Works only if volume-dir-archive exist. Default - false
  -volume-dir value
        the config map volume directory to watch for updates; may be used multiple times
  -volume-dir-archive value
        the config map volume directory to watch for updates and unarchiving; 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-retries int
        the amount of times to retry the webhook reload request (default 1)
  -webhook-status-code int
        the HTTP status code indicating successful triggering of reload (default 200)
  -webhook-url value
        the url to send a request to when the specified config map volume directory has been updated

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