Hi guys I am fairly new to the whole kubernetes thing but figured it would be good to start labbing with k3d However after following the guide for setting up a cluster with a local registry <https k3d io v5 4 4 usage registries > I ran into some trouble The steps I have taken are ```k3d registry create registry localhost port 12345 k3d cluster create mycluster registry use k3d registry localhost 12345 docker pull nginx latest docker tag nginx latest k3d registry localhost 12345 nginx latest docker push k3d registry localhost 12345 nginx latest cat lt lt EOF | kubectl apply f apiVersion apps v1 kind Deployment metadata name nginx test registry labels app nginx test registry spec replicas 1 selector matchLabels app nginx test registry template metadata labels app nginx test registry spec containers name nginx test registry image k3d registry localhost 12345 nginx latest ports containerPort 80 EOF``` No errors so far but when I run `kubectl describe pod nginx test registry` the event log looks like ``` Events Type Reason Age From Message Normal Scheduled 13s default scheduler Successfully assigned default nginx test registry 5ff799bb8f 6mk6z to k3d mycluster server 0 Warning FailedCreatePodSandBox 3s kubelet Failed to create pod sandbox rpc error code = Unknown desc = failed to get sandbox image rancher mirrored pause 3 6 failed to pull image rancher mirrored pause 3 6 failed to pull and unpack image <http docker io rancher mirrored pause 3 6|docker io rancher mirrored pause 3 6> failed to resolve reference <http docker io rancher mirrored pause 3 6|docker io rancher mirrored pause 3 6> failed to do request Head <https registry 1 docker io v2 rancher mirrored pause manifests 3 6> dial tcp lookup <http registry 1 docker io|registry 1 docker io> on 127 0 0 11 53 read udp 127 0 0 1 34330 gt 127 0 0 11 53 i o timeout``` I reckon that there is a problem with my network config on my host machine but I m not sure and don t know where to start looking Any ideas of what my problem is and how to fix it

Hi guys I am fairly new to the whole kubernetes thing but fi rancher-users #k3d

Title

dazzling-zoo-91458

08/18/2022, 7:32 AM

Hi guys! I am fairly new to the whole kubernetes thing but figured it would be good to start labbing with k3d. However, after following the guide for setting up a cluster with a local registry (https://k3d.io/v5.4.4/usage/registries/) I ran into some trouble. The steps I have taken are:

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k3d registry create registry.localhost --port 12345
k3d cluster create mycluster --registry-use k3d-registry.localhost:12345

docker pull nginx:latest
docker tag nginx:latest k3d-registry.localhost:12345/nginx:latest
docker push k3d-registry.localhost:12345/nginx:latest

cat <<EOF | kubectl apply -f -
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-test-registry
  labels:
    app: nginx-test-registry
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nginx-test-registry
  template:
    metadata:
      labels:
        app: nginx-test-registry
    spec:
      containers:
      - name: nginx-test-registry
        image: k3d-registry.localhost:12345/nginx:latest
        ports:
        - containerPort: 80
EOF

No errors so far, but when I run

kubectl describe pod nginx-test-registry

the event log looks like:

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...

Events:
  Type     Reason                  Age   From               Message
  ----     ------                  ----  ----               -------
  Normal   Scheduled               13s   default-scheduler  Successfully assigned default/nginx-test-registry-5ff799bb8f-6mk6z to k3d-mycluster-server-0
  Warning  FailedCreatePodSandBox  3s    kubelet            Failed to create pod sandbox: rpc error: code = Unknown desc = failed to get sandbox image "rancher/mirrored-pause:3.6":
                                                              failed to pull image "rancher/mirrored-pause:3.6": failed to pull and unpack image "<http://docker.io/rancher/mirrored-pause:3.6|docker.io/rancher/mirrored-pause:3.6>": 
                                                                failed to resolve reference "<http://docker.io/rancher/mirrored-pause:3.6|docker.io/rancher/mirrored-pause:3.6>": 
                                                                  failed to do request: Head "<https://registry-1.docker.io/v2/rancher/mirrored-pause/manifests/3.6>": dial tcp: lookup <http://registry-1.docker.io|registry-1.docker.io> on 127.0.0.11:53: read udp 127.0.0.1:34330->127.0.0.11:53: i/o timeout

I reckon that there is a problem with my network config on my host machine but I'm not sure and don't know where to start looking. Any ideas of what my problem is and how to fix it?

wide-garage-9465

08/18/2022, 8:15 AM

Hey there! Given that error I assume that there is no pod running at all? What's your OS, Docker Version and network config?

dazzling-zoo-91458

08/18/2022, 9:36 AM

That is correct. The pod is stuck in state "ContainerCreating" I'm running

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Ubuntu 20.04.4 LTS
Docker version 20.10.17, build 100c701

Regarding network config I'm not sure what info you would like to see. Can you specify further? After some experimenting I have found that it works as expected if I connect to the VPN for my office, so it is indeed a network issue. I'm thinking DNS maybe?

Does not seem to be DNS as I thought since I get a timeout. Also nslookup resolves the address. Firewall then?

wide-garage-9465

08/18/2022, 10:02 AM

Yeah, I was referring to VPN, DNS, Firewall, etc. It's a Timeout error so Firewall could be the issue. Do you have one running locally (e.g. ufw)? Otherwise any other network firewall could be blocking it.

dazzling-zoo-91458

08/18/2022, 11:23 AM

I will continue to look into the matter. I will update this thread when/if I solve it, or if it start looking like I need k3d expertice. Thanks for your help! Much appreciated.

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