Kubernetes
每天5分钟玩转容器技术
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kubeadm token list
# get --discovery-token-ca-cert-hash
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
搭建
测试
#################
# busybox.yaml
#################
apiVersion: v1
kind: Pod
metadata:
name: busybox
namespace: default
spec:
containers:
- image: busybox
command:
- sleep
- "3600"
imagePullPolicy: IfNotPresent
name: busybox
restartPolicy: Always
sudo kubectl create -f ./busybox.yaml
sudo kubectl get rc
sudo kubectl get pods
sudo kubectl describe pod mysql
FAQ
问题:
########################3
# Centos7
########################3
#sudo kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.10.0/Documentation/kube-flannel.yml
$ sudo kubectl apply -f ./kube-flannel.yml
unable to recognize "./kube-flannel.yml": Get http://localhost:8080/api?timeout=32s: dial tcp [::1]:8080: connect: connection refused
unable to recognize "./kube-flannel.yml": Get http://localhost:8080/api?timeout=32s: dial tcp [::1]:8080: connect: connection refused
unable to recognize "./kube-flannel.yml": Get http://localhost:8080/api?timeout=32s: dial tcp [::1]:8080: connect: connection refused
unable to recognize "./kube-flannel.yml": Get http://localhost:8080/api?timeout=32s: dial tcp [::1]:8080: connect: connection refused
unable to recognize "./kube-flannel.yml": Get http://localhost:8080/api?timeout=32s: dial tcp [::1]:8080: connect: connection refused
The connection to the server localhost:8080 was refused - did you specify the right host or port
解决: 需要开启 api server 代理端口：
# 查看端口是否代理：
$ curl localhost:8080/api
# 开启端口代理：
$ kubectl proxy --port=8080 &