kubeadm 安装1.24.9 版本

巽逸
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一、配置运行环境

#修改内核参数
echo net.bridge.bridge-nf-call-iptables = 1  >>/etc/sysctl.conf
echo net.ipv4.ip_forward=1 >>/etc/sysctl.conf
echo net.bridge.bridge-nf-call-iptables=1 >>/etc/sysctl.conf
echo net.bridge.bridge-nf-call-ip6tables=1 >>/etc/sysctl.conf
echo vm.swappiness=0 >>/etc/sysctl.conf
sysctl -p
 
 
#关闭swap
#swapoff -a
#sed -i '/swap/s/^/#/' /etc/fstab
 
 
#关闭firewalld
systemctl stop firewalld
systemctl disable firewalld
sed -i 's/=enforcing/=disabled/g' /etc/selinux/config
 
#配置IPVS模块
cat > /etc/sysconfig/modules/ipvs.modules <<EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF
chmod 755 /etc/sysconfig/modules/ipvs.modules
bash /etc/sysconfig/modules/ipvs.modules
lsmod | grep -e ip_vs -e nf_conntrack_ipv4
 
 
#配置源
cd /etc/yum.repos.d/
wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
cat>>/etc/yum.repos.d/kubrenetes.repo<<EOF
[kubernetes]
name=Kubernetes Repo
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
EOF
yum makecache
 
#安装containerd
yum install -y containerd
 
#配置containerd运行环境
cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF
 
sudo modprobe overlay
sudo modprobe br_netfilter

#配置containerd的config.toml文件
containerd config default | sudo tee /etc/containerd/config.toml
sed -ri 's#(sandbox_image = ")(registry.k8s.io)(.*)#\1registry.cn-hangzhou.aliyuncs.com/google_containers\3#g' /etc/containerd/config.toml
sed -i "s/SystemdCgroup = false/SystemdCgroup = true/g"   /etc/containerd/config.toml
#查看
cat  /etc/containerd/config.toml |egrep "sandbox_image|SystemdCgroup"


#指定crictl的containerd端点
cat > /etc/crictl.yaml <<EOF
runtime-endpoint: unix:///var/run/containerd/containerd.sock
image-endpoint: unix:///var/run/containerd/containerd.sock
timeout: 0
debug: false
pull-image-on-create: false
EOF

#启动containerd服务
systemctl start containerd.service
systemctl enable containerd.service

#安装kubeadm等
yum install  kubelet-1.24.9 kubeadm-1.24.9 kubectl-1.24.9 -y
 
#安装ipvs
yum -y install ipvsadm ipset
 
#启动kubelet
systemctl enable kubelet && systemctl start kubelet

二、master服务器kubeadm init

kubeadm init  --kubernetes-version=v1.24.9  --pod-network-cidr=10.244.0.0/16 --service-cidr=10.96.0.0/12 --image-repository='registry.cn-hangzhou.aliyuncs.com/google_containers'

三、安装calico网络

wget https://projectcalico.docs.tigera.io/archive/v3.25/manifests/calico.yaml
kubectl  apply -f calico.yaml

四、配置NFS默认存储

1、nfs服务器安装nfs与配置

yum -y install nfs-utils rpcbind
systemctl  start rpcbind.service 
systemctl  start nfs

#配置
mkdir /data/nfs -p
chown nfsnobody.nfsnobody /data/nfs

NFS_SERVER_IP=`ip a s eth0|awk -F" "+ 'NR==3{print $3}'`
cat>>/etc/exports<<EOF
/data/nfs ${NFS_SERVER_IP}(rw,sync,no_root_squash,no_all_squash)
EOF
exportfs  -arv

2、其它客户端服务器安装nfs-utils

yum install -y  nfs-utils

3、nfs动态存储的下载及yaml配置

3.1 下载yaml配置

wget https://raw.githubusercontent.com/kubernetes-retired/external-storage/master/nfs-client/deploy/rbac.yaml
wget https://raw.githubusercontent.com/kubernetes-retired/external-storage/master/nfs-client/deploy/class.yaml
wget https://raw.githubusercontent.com/kubernetes-retired/external-storage/master/nfs-client/deploy/deployment.yaml

3.3 修改class为默认存储

[root@master nfs]# cat class.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: managed-nfs-storage
  annotations:
    storageclass.kubernetes.io/is-default-class: "true" #默认的动态存储
provisioner: fuseim.pri/ifs # or choose another name, must match deployment's env PROVISIONER_NAME'
parameters:
  archiveOnDelete: "false"

3.3 导入rbac与class

kubectl  apply -f class.yaml
kubectl  apply -f rbac.yaml

3.4 修改deploymet文件

[root@master ~]# cat  deployment.yaml 
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nfs-client-provisioner
  labels:
    app: nfs-client-provisioner
  # replace with namespace where provisioner is deployed
  namespace: default
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: nfs-client-provisioner
  template:
    metadata:
      labels:
        app: nfs-client-provisioner
    spec:
      serviceAccountName: nfs-client-provisioner
      containers:
        - name: nfs-client-provisioner
          image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/nfs-subdir-external-provisioner:v4.0.2#修改镜像
          volumeMounts:
            - name: nfs-client-root
              mountPath: /persistentvolumes
          env:
            - name: PROVISIONER_NAME
              value: fuseim.pri/ifs
            - name: NFS_SERVER
              value: 172.16.208.176 #nfs服务器ip
            - name: NFS_PATH
              value: /data/nfs #nfs服务器的挂载目录
      volumes:
        - name: nfs-client-root
          nfs:
            server: 172.16.208.176 #nfs服务器ip
            path: /data/nfs #nfs服务器的挂载目录

3.4 测试

[root@master nfs]# cat test-pvc.yaml
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: test-claim
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Mi
[root@master nfs]# kubectl  apply -f test-pvc.yaml
persistentvolumeclaim/test-claim created
[root@master nfs]# kubectl get pvc
NAME         STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS          AGE
test-claim   Bound    pvc-67c02ed1-0501-43f7-bfc9-f48e0b23d03f   1Mi        RWX            managed-nfs-storage   8s
[root@master nfs]# kubectl get pv
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                STORAGECLASS          REASON   AGE
pvc-67c02ed1-0501-43f7-bfc9-f48e0b23d03f   1Mi        RWX            Delete           Bound    default/test-claim   managed-nfs-storage            11s

五、helm安装

1.查看Helm版本与kubernetes版本兼容性

helm.sh/docs/topics…

2.下载地址

github.com/helm/helm/r…

3.下载及安装

wget https://get.helm.sh/helm-v3.12.1-linux-amd64.tar.gz
tar xf helm-v3.12.1-linux-amd64.tar.gz
mv  linux-amd64/helm  /usr/local/bin/
helm version

4.添加常用的仓库

helm repo add stable https://kubernetes.oss-cn-hangzhou.aliyuncs.com/charts
helm repo add kaiyuanshe http://mirror.kaiyuanshe.cn/kubernetes/charts
helm repo add azure http://mirror.azure.cn/kubernetes/charts
helm repo add dandydev https://dandydeveloper.github.io/charts
helm repo add bitnami https://charts.bitnami.com/bitnami
helm repo list
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