云野阁

kubectl create deployment web --image=nginx -o yaml --dry-run

kubectl create deployment web --image=nginx -o yaml --dry-run > my.yaml

kubectl get deploy nginx -o=yaml --export > nginx.yaml

# Check kubeadm release version
yum list --showduplicates kubeadm --disableexcludes=kubernetes
# Download the latest kubeadm
yum install -y kubeadm-1.28.0 --disableexcludes=kubernetes 
# Verify upgrade plan
kubeadm upgrade plan
# Pull domestic images
kubeadm config images pull --image-repository registry.aliyuncs.com/google_containers
# Choose the target version to upgrade to
kubeadm upgrade apply v1.28.0
# Success message
[upgrade/successful] SUCCESS! Your cluster was upgraded to "v1.28.0". Enjoy!
[upgrade/kubelet] Now that your control plane is upgraded, please proceed with upgrading your kubelets if you haven't already done so.

# Upgrade kubelet and kubectl
# Download the latest kubelet and kubectl
yum install -y kubelet-1.28.0 kubectl-1.28.0 --disableexcludes=kubernetes
# Restart kubelet
sudo systemctl daemon-reload
sudo systemctl restart kubelet

# Check versions
 kubeadm version
 kubelet --version
 kubectl version

# Download the latest kubeadm
yum install -y kubeadm-1.28.0 --disableexcludes=kubernetes
# Upgrade local kubelet configuration
kubeadm upgrade node
[upgrade] The configuration for this node was successfully updated!
[upgrade] Now you should go ahead and upgrade the kubelet package using your package manager.

# Upgrade kubelet and kubectl
# Download the latest kubelet and kubectl
yum install -y kubelet-1.28.0 kubectl-1.28.0 --disableexcludes=kubernetes
# Restart kubelet
sudo systemctl daemon-reload
sudo systemctl restart kubelet

# Check versions
 kubeadm version
 kubelet --version
 kubectl version

#!/bin/bash
############# Description #############
:<<!
Regularly generate Dashboard login token, valid for 24 hours
!
############# Description #############

token=$(/usr/bin/kubectl -n kubernetes-dashboard create token admin-user)
echo "
#######################################################
$(date) generated a new Dashboard login token, the latest token is as follows:
#######################################################
$token" > /root/dashboard/admin-user.token

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: k8s-dashboard
  namespace: kubernetes-dashboard
  labels:
    ingress: k8s-dashboard
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /  # Rewrite path
    nginx.ingress.kubernetes.io/ssl-redirect: "true"  # Automatically redirect http to https
    nginx.ingress.kubernetes.io/use-regex: "true"
    nginx.ingress.kubernetes.io/backend-protocol: "HTTPS"
spec:
  ingressClassName: nginx 
  rules:
    - host: k8s.yjs.51xueweb.cn
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: kubernetes-dashboard
                port:
                  number: 443

kubeadm token create --print-join-command > join-command.txt
cat join-command.txt

# Download YAML file
wget https://gitcode.net/mirrors/kubernetes/ingress-nginx/-/blob/master/deploy/static/provider/baremetal/deploy.yaml

# Modify the image pull address in the YAML file
##################### Modification ######################
registry.cn-hangzhou.aliyuncs.com/google_containers/kube-webhook-certgen:v20230407
registry.cn-hangzhou.aliyuncs.com/google_containers/nginx-ingress-controller:v1.8.1
##################### Modification ######################
# Install
kubectl apply -f deploy.ymal
# Check status
kubectl get pods -n ingress-nginx
################ Status ##################
NAME                                       READY   STATUS      RESTARTS   AGE
ingress-nginx-admission-create-2lz4v       0/1     Completed   0          5m46s
ingress-nginx-admission-patch-c6896        0/1     Completed   0          5m46s
ingress-nginx-controller-7575fb546-q29qn   1/1     Running     0          5m46s

# Modify YAML file
Add replicas in the Deployment class
#################### Modification ####################
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/name: ingress-nginx
    app.kubernetes.io/part-of: ingress-nginx
    app.kubernetes.io/version: 1.8.1
  name: ingress-nginx-controller
  namespace: ingress-nginx
spec:
  replicas: 2
  minReadySeconds: 0
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app.kubernetes.io/component: controller
      app.kubernetes.io/instance: ingress-nginx
      app.kubernetes.io/name: ingress-nginx

# Install nfs on all nodes in the cluster
yum -y install nfs-utils
# Create nfs directory and modify permissions
mkdir /data
chmod -R 777  /data
echo "/data 10.12.10.32(insecure,rw,sync,no_root_squash) 10.12.10.33(insecure,rw,sync,no_root_squash) 10.12.10.34(insecure,rw,sync,no_root_squash) 10.12.10.35(insecure,rw,sync,no_root_squash)" >> /etc/exports
# Make the configuration effective
exportfs -r
exportfs 
# Start rpcbind and nfs services
systemctl restart rpcbind && systemctl enable rpcbind
systemctl restart nfs-server && systemctl enable nfs-server
# Check the registration status of RPC services
 rpcinfo -p localhost
 # Open firewall ports
  firewall-cmd --add-port=2049/tcp --permanent
   firewall-cmd --add-port=2049/udp --permanent
   firewall-cmd --reload
   firewall-cmd --list-all 
 Test if the nfs directory is provided normally
 showmount -e Create directory host IP
 # Mount the shared directory of 10.12.10.31 to other hosts
  mount -t nfs 10.12.10.31:/data data

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv
  namespace: nfs-test
  labels:
    pv: nfs-pv
spec:
  capacity:
    storage: 5000Mi
  accessModes:
    - ReadWriteMany
  persistentVolumeReclaimPolicy: Retain
  storageClassName: nfs
  nfs:
    server: 10.12.10.31  # Create directory host IP
    path: "/data"

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nfs-pvc
  namespace: nfs-test
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 5000Mi  # Capacity
  selector:
    matchLabels:
      pv: nfs-pv   # Associate with pv

yum -y install bash-completion
source /usr/share/bash-completion/bash_completion
echo 'source <(kubectl completion bash)' >>  ~/.bashrc