Lab 3.2 Step 20 CURL not working

Hi all,
I've been following all the steps of lab 3.2. I used the edited-localregistry.yaml to deploy the local registry.
Everything seems to be running without any error, but when I try to do a CURL to my registry on port 5000, I get a Connection timed out.
I'm currently doing the labs on 2 VirtualBox VMs running Ubuntu 20.04 LTS. The Firewall is disabled. The CURL operation did work on the docker-compose.yaml.
- mark@master:~$ kubectl get pods,svc,pvc,pv,deploy
- NAME READY STATUS RESTARTS AGE
- pod/nginx-b68dd9f75-tsvnz 1/1 Running 0 27m
- pod/registry-6b5bb79c4-xq8sp 1/1 Running 0 27m
- NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
- service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 5h30m
- service/nginx ClusterIP 10.102.40.15 <none> 443/TCP 27m
- service/registry ClusterIP 10.102.44.4 <none> 5000/TCP 27m
- NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
- persistentvolumeclaim/nginx-claim0 Bound task-pv-volume 200Mi RWO 27m
- persistentvolumeclaim/registry-claim0 Bound registryvm 200Mi RWO 27m
- NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
- persistentvolume/registryvm 200Mi RWO Retain Bound default/registry-claim0 27m
- persistentvolume/task-pv-volume 200Mi RWO Retain Bound default/nginx-claim0 27m
- NAME READY UP-TO-DATE AVAILABLE AGE
- deployment.apps/nginx 1/1 1 1 27m
- deployment.apps/registry 1/1 1 1 27m
- mark@master:~$ curl http://10.102.44.4:5000/v2/
- curl: (28) Failed to connect to 10.102.44.4 port 5000: Connection timed out
Am I missing something?
Thanks in advance for the help!
Comments
-
Hi @mark.hendriks,
Since you are running on VBox, would you be able to provide the output of
kubectl get pod -A -o wide
?Regards,
-Chris0 -
Hi @chrispokorni,
Thanks for your reply.
This is the output you requested:
- NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
- default nginx-b68dd9f75-tsvnz 1/1 Running 0 88m 192.168.171.72 worker <none> <none>
- default registry-6b5bb79c4-xq8sp 1/1 Running 0 88m 192.168.171.71 worker <none> <none>
- kube-system calico-kube-controllers-69496d8b75-whp7d 1/1 Running 3 6h31m 192.168.219.75 master <none> <none>
- kube-system calico-node-5njrd 1/1 Running 3 6h31m 192.168.178.201 master <none> <none>
- kube-system calico-node-7mkm2 1/1 Running 2 6h31m 192.168.178.202 worker <none> <none>
- kube-system coredns-74ff55c5b-8x58m 1/1 Running 3 6h31m 192.168.219.76 master <none> <none>
- kube-system coredns-74ff55c5b-cv6gq 1/1 Running 3 6h31m 192.168.219.74 master <none> <none>
- kube-system etcd-master 1/1 Running 3 6h31m 192.168.178.201 master <none> <none>
- kube-system kube-apiserver-master 1/1 Running 5 6h31m 192.168.178.201 master <none> <none>
- kube-system kube-controller-manager-master 1/1 Running 5 6h31m 192.168.178.201 master <none> <none>
- kube-system kube-proxy-2ncsc 1/1 Running 3 6h31m 192.168.178.201 master <none> <none>
- kube-system kube-proxy-rtcsx 1/1 Running 2 6h31m 192.168.178.202 worker <none> <none>
- kube-system kube-scheduler-master 1/1 Running 4 6h31m 192.168.178.201 master <none> <none>
Thanks,
Mark0 -
And as I post my last reply, I reboot my cluster, and all of a sudden it works.
Still wondering why it didn't work before.
0 -
Thank you for the detailed output, Mark. As I suspected, your VM IP addresses overlap the Pod IP subnet managed by the Calico CNI plugin. This overlap causes DNS and routing issues between Nodes and Pods in your cluster.
I would recommend re-building your cluster, and making sure that either the VMs are not using IP addresses from 192.168.0.0/16 by managing the hypervisor's configuration, or that you reconfigure the
calico.yaml
file and thekubeadm init
command found in thek8sMaster.sh
script to a different private IP subnet for your Pods.Regards,
-Chris0 -
I just finished rebuilding my cluster. I went with Ubuntu 18.04 LTS this time around, since the k8sMaster.sh mentioned that version.
I changed the IP range to 192.10.0.0/16 in both the k8sMaster.sh and the calico.yaml files.
Everything works just fine now.
Thanks again for the assistance Chris!
Kind regards,
Mark0
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