Image warm for Kubernetes
Nevar pievienot vairāk kā 25 tēmas Tēmai ir jāsākas ar burtu vai ciparu, tā var saturēt domu zīmes ('-') un var būt līdz 35 simboliem gara.
Vladimir Smagin 1cbba7c9f3 no, fuck it pirms 1 dienas
build import pirms 1 nedēļas
cmd/manager import pirms 1 nedēļas
deploy add to dockerhub registry pirms 1 nedēļas
pkg import pirms 1 nedēļas
vendor import pirms 1 nedēļas
version import pirms 1 nedēļas
.gitignore import pirms 1 nedēļas
Dockerfile import pirms 1 nedēļas
Jenkinsfile no, fuck it pirms 1 dienas add to dockerhub registry pirms 1 nedēļas
VERSION add version pirms 1 nedēļas
go.mod import pirms 1 nedēļas
go.sum import pirms 1 nedēļas
tools.go import pirms 1 nedēļas

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



  • Set image URL
    image: string

  • Set image tag
    version: string

Additional options:

  • Set custom command
    customCommand: strings list
    - “/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:

kind: WarmImage
  name: mongo4
  image: mongo
  version: "4"
  nodeSelector: ""

Now you warmed mongo:4 on all master nodes.

Copyright by Vladimir Smagin (21h) 2020 email:
Project page: