I've just started with docker and k3s.
I have a local docker image that I've made with a custom app inside.
I was wondering how would I set that as a pod on k3s.
I have k3s set with docker instead of containerd but when I run kubectl create I still get the error ImagePullBackOff.
Can anyone help? thank you!
I was able to get it to work by reverting to containerd and following this guide: https://cwienczek.com/2020/06/import-images-to-k3s-without-docker-registry/ I'm now creating yaml files and uploading the dockerimages using ctr.
Here a demo instructions I wrote in the past for a company demo:
References
Install/Setup
sudo snap install microk8s --classic --channel=1.21
sudo usermod -a -G microk8s $USER
sudo chown -f -R $USER ~/.kube
su - $USER
# DNS setup
microk8s.kubectl run -i --tty --image busybox:1.28.4 dns-test --restart=Never --rm /bin/sh
microk8s enable registry dns storage
Start
sudo systemctl start docker
microk8s start
Services check
microk8s status --wait-ready
microk8s kubectl get nodes
microk8s kubectl get services
App deploy
# Pull hello world image from docker hub
docker pull hello-world
# Push hello world image to microk8s registry
docker tag hello-world localhost:32000/hello-world
docker push localhost:32000/hello-world
# Try it
docker run --rm localhost:32000/hello-world
App running
microk8s kubectl run my-demo --image localhost:32000/hello-world
microk8s kubectl expose pod my-demo --port 8080 --target-port 8080
Terminatation
microk8s kubectl delete service my-demo
microk8s kubectl delete pod my-demo
# or
kubectl delete -f app.yaml
# then
microk8s.stop