Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!
Tutorials
https://www.youtube.com/watch?v=ZpbXSdzp_vo
Some Kubernetes Distributions
Microk8s seems like a good option.
-
k3s - a light-weight Kubernetes distribution ideal for edge and development - compatible with Raspberry Pi & ARM64 (Packet, AWS Graviton)
-
k3d - makes k3s available on any computer where Docker is also running
-
microk8s - a Kubernetes distribution, specifically for Ubuntu users.
-
minikube - a popular, but heavy-weight option that creates a Linux virtual machine your computer using VirtualBox or similar
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Docker for Mac/Windows - Docker's Desktop edition has an option to run a local Kubernetes cluster
Authentication
Pull an Image from a Private Registry
Define a Command and Arguments for a Container
Define a Command and Arguments for a Container
Define command as ["/busybox/sh", "-c", "tail -f /dev/null"]
instead of
["/busybox/sh", "-c", "tail", "-f", "/dev/null"]
.
One-time Job
Running one-time jobs during Kubernetes deployments
Request Resource
https://cloud.google.com/blog/products/containers-kubernetes/kubernetes-best-practices-resource-requests-and-limits
https://kubernetes.io/docs/tasks/configure-pod-container/assign-memory-resource/
https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/
Configure Quality of Service for Pods
Kubertenes Deployment
Below is an example YAML configuration file.
---
apiVersion: v1
kind: Service
metadata:
name: helloworldserivce
spec:
selector:
app: hello-world
ports:
- protocol: "TCP"
port: 8080
targetPort: 80
nodePort: 30001
type: LoadBalancer
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: hello-world
spec:
replicas: 5
selector:
matchLabels:
app: hello-world
template:
metadata:
labels:
app: hello-world
spec:
containers:
- name: hello-world
image: tutum/hello-world
ports:
- containerPort: 80
Another good example is to Deploy Apache Ray on Kubernetes .
in you namespace, you can run kubectl get resourcequota to check your quota
kubectl version list
kubectl get namespace
kubectl get namespace -l account.kubernetes.io/name=your_account
kubectl config get-contexts
kubectl get account chdu -o yaml
kubectl get application jupyterhub -o yaml
kubectl get namespace your_namespace -o yaml
kubectl get rc,pod,svc -n your_namespace
Run command in a pod.
kubectl exec -it pod_name -n your_namespace -- /bin/bash
Copy files to a pod.
kubectl -n your_namespace cp local_path_1 ... local_path_n pod_name:/destination/dir/
Copy files to a pod.
kubectl -n your_namespace cp pod_name:/some/path/1 pod_name:/some/path/2 /local/destination/dir
Delete a pod. Notice that a new pod will be created to replace the deleted pod if there's no enough replicas. If you want to delete a pod completely (without replacement), you have to delete the corresponding deployment instead.
kubectl -n your_namespace delete pods pod_name
List deployments in a namespace.
kubectl -n ms get deployments
Delete a deployment.
kubectl -n your_namespace delete deployment deployment_name