What registry I have to pass when installing kamel on kubernetes? - docker

Question

I have installed kubernetes in AWS ec2 instance. I'm not using any minikube or openshift. I'm trying to install kamel on top of kubernetes to run my integration code. When I tried to run kamel install command its throwing below error,
Error: cannot find automatically a registry where to push images
When I tried running as root user below error is thrown,
Error: cannot get current namespace: open /root/.kube/config: no such file or directory
I'd like to know what registry I have to pass while running kamel install command. I have docker hub account with a demo repository. Should I pass something like,
kamel install --registry hubusername/reponame
What I'm not getting is after I passed value, I'm getting below success message,
Camel K installed in namespace default
When I tried to run a sample groovy script its getting hanged after following message
kamel run hello.groovy --dev
Integration "hello" created
NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
default camel-k-operator-587b579567-m26rs 0/1 Pending 0 30m <none> <none> <none> <none>
Name: camel-k-operator-587b579567-m26rs
Namespace: default
Priority: 0
PriorityClassName: <none>
Node: <none>
Labels: camel.apache.org/component=operator
name=camel-k-operator
pod-template-hash=587b579567
Annotations: <none>
Status: Pending
IP:
Controlled By: ReplicaSet/camel-k-operator-587b579567
Containers:
camel-k-operator:
Image: docker.io/apache/camel-k:0.3.3
Port: <none>
Host Port: <none>
Command:
camel-k
Environment:
WATCH_NAMESPACE: default (v1:metadata.namespace)
OPERATOR_NAME: camel-k
POD_NAME: camel-k-operator-587b579567-m26rs (v1:metadata.name)
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from camel-k-operator-token-prjhp (ro)
Conditions:
Type Status
PodScheduled False
Volumes:
camel-k-operator-token-prjhp:
Type: Secret (a volume populated by a Secret)
SecretName: camel-k-operator-token-prjhp
Optional: false
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 38s (x23 over 31m) default-scheduler 0/1 nodes are available: 1 node(s) had taints that the pod didn't tolerate.
Can you please help me out here? Thank you for your time.

Answer 1

If you installed a single node Kubernetes chances are your only node is a master node. Which is why Kubernetes won't schedule your job.
Check this by running:
kubectl get node
If your only node shows 'master' in its ROLES column - than you need to untaint it to allow scheduling:
kubectl taint nodes --all node-role.kubernetes.io/master-
Try to rerun you kamel job afer that.