k8s命令

kubeadm config print init-defaults > kubeadm-config.yaml
kubeadm config images list --config kubeadm-config.yaml
kubeadm config images pull --config kubeadm-config.yaml

500 cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

yum update

yum list kubelet --showduplicates | sort -r

yum install kubelet.x86_64:1.16.1-0 --downloadonly --downloaddir=/root/k8srpm/
yum install kubelet.x86_64_1.16.1-0 --downloadonly --downloaddir=/root/k8srpm/
yum install kubelet.x86_64-1.16.1-0 --downloadonly --downloaddir=/root/k8srpm/
yum install kubelet-1.16.1-0 --downloadonly --downloaddir=/root/k8srpm/

k8s创建永久token

[root@k8s-10-192-52-123 ~]# kubeadm token create --ttl 0
e19fnk.h9a52kse0ernfh0u
[root@k8s-10-192-52-123 ~]# kubeadm token list
TOKEN                     TTL         EXPIRES   USAGES                   DESCRIPTION   EXTRA GROUPS
e19fnk.h9a52kse0ernfh0u   <forever>   <never>   authentication,signing   <none>        system:bootstrappers:kubeadm:default-node-token
[root@k8s-10-192-52-123 ~]# openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
a030724a9437a9356a2b0b3d9ee8c5f287493f51c315c684c686b4a8c581a71f

加入集群
# kubeadm join 10.192.52.123:6443 --token e19fnk.h9a52kse0ernfh0u --discovery-token-ca-cert-hash sha256:a030724a9437a9356a2b0b3d9ee8c5f287493f51c315c684c686b4a8c581a71f