Image warm for Kubernetes
Vous ne pouvez pas sélectionner plus de 25 sujets Les noms de sujets doivent commencer par une lettre ou un nombre, peuvent contenir des tirets ('-') et peuvent comporter jusqu'à 35 caractères.
Vladimir Smagin 1cbba7c9f3 no, fuck it il y a 1 jour
build import il y a 1 semaine
cmd/manager import il y a 1 semaine
deploy add to dockerhub registry il y a 1 semaine
pkg import il y a 1 semaine
vendor import il y a 1 semaine
version import il y a 1 semaine
.gitignore import il y a 1 semaine
Dockerfile import il y a 1 semaine
Jenkinsfile no, fuck it il y a 1 jour
README.md add to dockerhub registry il y a 1 semaine
VERSION add version il y a 1 semaine
go.mod import il y a 1 semaine
go.sum import il y a 1 semaine
tools.go import il y a 1 semaine

README.md

Warm Image operator for Kubernetes

For example, you have huge image with your software and running POD on node. When POD moving to another node your image downloads to new node minute or two. This operator forces nodes to download image before rescheduling, so POD starts faster.

How it works

It runs /bin/sh with infinite loop on specified image as DaemonSet with additional options like NodeSelector, Affinity or resource limits. You can specify custom command if your image not contains /bin/sh interpreter or you want to run own script.

Deploy operator

Cluster scoped installation:

kubectl create ns warmimage
kubectl -f deploy/crds/blindage.org_warmimages_crd.yaml
kubectl -n warmimage -f deploy/role.yaml
kubectl -n warmimage -f deploy/role_binding.yaml
kubectl -n warmimage -f deploy/service_account.yaml
kubectl -n warmimage -f deploy/operator.yaml

Now create your first warmer

kubectl -n warmimage -f deploy/example/mongo4.yaml

Settings

Required:

  • Set image URL
    image: string

  • Set image tag
    version: string

Additional options:

  • Set custom command
    customCommand: strings list
    Default:
    - “/bin/sh”
    - “-c”
    - “while true; do sleep 86400; done”

  • Add custom labels
    labels: map

  • Affinity, node selection and tolerations
    nodeSelector: default empty
    affinity: default empty
    tolerations: default empty

  • Resource limiting
    podRequests: default empty
    podLimits: default empty

Your first warmer

Create yaml file and place it:

apiVersion: blindage.org/v1alpha1
kind: WarmImage
metadata:
  name: mongo4
spec:
  image: mongo
  version: "4"
  nodeSelector:
    node-role.kubernetes.io/master: ""

Now you warmed mongo:4 on all master nodes.


Copyright by Vladimir Smagin (21h) 2020
http://blindage.org email: 21h@blindage.org
Project page: https://git.blindage.org/21h/warm-image-operator