k8s-updater

README

k8s-updater

Caution, this project is in alpha stage.

Purpose

Provide container updates to latest image versions at Kubernetes cluster.

Usage

Deploy this image as a job on your cluster. You can run it manually or schedule with sabakaio/kron (as in following example)

apiVersion: batch/v1
kind: Job
metadata:
  name: autoupdater
  labels:
    kron: "true" # Schedure with the sabakaio/kron
  annotations:
    schedule: "@every 1h" # Run every hour with sabakaio/kron
spec:
  template:
    spec:
      containers:
        - image: sabaka/k8s-updater:0.0.1
          name: autoupdater
      restartPolicy: Never # Important for containers that should run just once (by schedule)

Updater is going to list all Deployments labled with autoupdate to perform version check and updates

metadata:
  labels:
    autoupdate: "true"

To perform some pre-update actions (e.g. run database migrations) you can setup a hook for each container with Deployment annotations

metadata:
  annotations:
    before_autoupdate_web: "migration" # The job to run before autoupdate container `web`

You could also limit a versions range to to updrade on, with Deployment annotations

metadata:
  annotations:
    autoupdate_version_range_web: ">1.0.0 <2.0.0"