How can I use a local docker image in Kubernetes?
Your PODs are scheduled on your worker nodes. Since you set imagePullPolicy
to Never
you need to make your image available to both nodes. In other words, you need to build it on both nodes as you did on the master.
As a sidenote, it would be probably easier in the long term if you setup a custom docker registry and push your images there.
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codependent
By day: I code for 8 hours and a half. Cloud, Kubernetes, Spring, NodeJS... By night: I code a little more, work out and try to get some sleep.
Updated on June 04, 2022Comments
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codependent over 1 year
I have this basic Dockerfile:
FROM nginx RUN apt-get -y update && apt install -y curl
In the master node of my Kubernetes cluster I build that image:
docker build -t cnginx:v1 .
docker images
shows that the image has been correctly generated:REPOSITORY TAG IMAGE ID CREATED SIZE cgninx v1 d3b1b19d069e 39 minutes ago 141MB
I use this deployment referencing this custom image:
apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2 kind: Deployment metadata: name: nginx-deployment spec: selector: matchLabels: app: nginx replicas: 2 template: metadata: labels: app: nginx spec: containers: - name: cnginx image: cnginx:v1 imagePullPolicy: Never ports: - containerPort: 80 nodeSelector: nodetype: webserver
However the image is not found:
NAME READY STATUS RESTARTS AGE nginx-deployment-7dd98bd746-lw6tp 0/1 ErrImageNeverPull 0 4s nginx-deployment-7dd98bd746-szr9n 0/1 ErrImageNeverPull 0 4s
Describe pod info:
Events: Type Reason Age From Message ---- ------ ---- ---- ------- Normal Scheduled 1m default-scheduler Successfully assigned nginx-deployment-7dd98bd746-szr9n to kubenode2 Normal SuccessfulMountVolume 1m kubelet, kubenode2 MountVolume.SetUp succeeded for volume "default-token-bpbpl" Warning ErrImageNeverPull 9s (x9 over 1m) kubelet, kubenode2 Container image "cnginx:v1" is not present with pull policy of Never Warning Failed 9s (x9 over 1m) kubelet, kubenode2 Error: ErrImageNeverPull
I have also tried using the default imagePullPolicy, and some other things such as tagging the image with latest...
So, how can I make Kubernetes use a locally generated docker image?
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codependent over 5 yearsYep, hehe, my bad :-)
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