图像存在，但出现错误 Init:ErrImageNeverPull 容器图像不存在，拉取策略为 Never

Question

I am deploying an app on k3s with containerd (not docker) am trying to deploy a local image the image exists but the given error said image doesn't

docker.io/kubernetesui/metrics-scraper            v1.0.8              115053965e86b       19.7MB

**docker.io/library/laravel-example-project-fpm     latest**            ac83c8e9c86fd       378MB

docker.io/library/laravel-example-project-nginx   latest              6403f5d7120c6       24.2MB
rn-manager             v1.1.0              6a6ea3dbf71b9       116MB
docker.io/monachus/rancher-demo                   latest              65053fcc5f37a       7.01MB
docker.io/rancher/klipper-lb                      v0.3.5              dbd43b6716a08       3.33MB
docker.io/rancher/local-path-provisioner          v0.0.21             fb9b574e03c34       11.4MB
docker.io/rancher/mirrored-coredns-coredns        1.9.1               99376d8f35e0a       14.1MB
docker.io/rancher/mirrored-library-traefik        2.6.2               72463d8000a35       30.3MB
docker.io/rancher/mirrored-metrics-server         v0.5.2              f73640fb50619       26MB
docker.io/rancher/mirrored-pause                  3.6                 6270bb605e12e       301kB
root@u-server-master:~# 

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kubectl describe pod laravel-example-project-5597cdcc97-bv6fs

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kubectl describe pod laravel-example-project-5597cdcc97-bv6fs

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Events:
  Type     Reason             Age                    From               Message
  ----     ------             ----                   ----               -------
  Normal   Scheduled          45m                    default-scheduler  Successfully assigned default/laravel-example-project-5597cdcc97-bv6fs to zakham
  Warning  Failed             42m (x12 over 45m)     kubelet            Error: ErrImageNeverPull
  Warning  ErrImageNeverPull  4m57s (x187 over 45m)  kubelet            Container image "**laravel-example-project-fpm:latest**" is not present with pull policy of Never

---

kubectl get pods

laravel-example-project-5597cdcc97-26scj........ 0/2...........**Init:ErrImageNeverPull**.......0................ 26m

SOLVED i am using a local image with containerd i dont need to pull it, i solved it by specifing the node name nodeName because i noticed that when the pod is scheduled to the master node it run without error, so i specified that nodeName in the deployment

Answer 1

You get this error because the image is never pulled to the node, and you are using a never imagePullPolicy , which means that K8S will not pull the image if it doesn't exist or if there is a new version on the docker registry.

To solve this problem, you can use imagePullPolicy IfNotPresent to pull the image if it doesn't exist or Always to pull the image at every pod creation.

Answer 2

FIRST I SOLVED it like this i am using a local image with containerd i dont need to pull it, i solved it by specifing the node name nodeName because i noticed that when the pod is scheduled to the master node it run without error, so i specified that nodeName in the deployment

FINALLY I SOLVED IT LIKE THIS i just imported my image to all workers nodes and delete that nodeName paramater from the pod and it woeked like a charm

Answer 3

Since your image is local and/or you can be using a local registry the pull policy Never is fine. Also double check if there is any valid reason to not get the image runnning on any other node.

Try to not use a nodeName unless it has for example dedicated hardware among other things. Theres a big chance to have a taint on your Master.

Check the taints on master node if you want to schedule tasks there.

I would recommend to take a look here for further info: Taints and Tolerations

Pod Priority and Preemption

Node-pressure Eviction

A while ago i solved something really similar using antiaffinity, this video explains perfectly how to achieve it.