2、kubernetes的Kubeadm 部署安装

梦里梦外; 2023-07-06 15:59 30阅读 0赞

# 在k8s-master01、k8s-node01、k8s-node02上执行： #

## kube-proxy开启ipvs的前置条件 ##

modprobe br_netfilter
    
    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

# 安装 Docker 软件 #

yum install -y yum-utils device-mapper-persistent-data lvm2
    
    yum-config-manager --add-repo  http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    
    yum update -y && yum install -y docker-ce
    
    ## 创建 /etc/docker 目录
    mkdir /etc/docker
    
    
    # 配置 daemon.
    cat > /etc/docker/daemon.json <<EOF
    {
        "exec-opts": ["native.cgroupdriver=systemd"],
        "log-driver": "json-file",
        "log-opts": {
            "max-size": "100m"
        },
        "registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com"]
    }
    EOF
    
    
    mkdir -p /etc/systemd/system/docker.service.d
    
    # 重启docker服务
    systemctl daemon-reload && systemctl restart docker && systemctl enable docker

## 安装 Kubeadm （主从配置:k8s-master01、k8s-node01、k8s-node02） ##

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
    [kubernetes]
    name=Kubernetes
    baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
    enabled=1
    gpgcheck=0
    repo_gpgcheck=0
    gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
           http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
    EOF

yum install kubelet kubeadm kubectl -y
    systemctl enable kubelet.service
    systemctl start kubelet.service

## 初始化主节点 （k8s-master01）. ##

### 部署Kubernetes Master主节点: ###

kubeadm init --apiserver-advertise-address=192.168.80.137 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.20.2 --service-cidr=10.96.0.0/12 --pod-network-cidr=10.244.0.0/16

## master01节点： ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70][]

mkdir -p $HOME/.kube
    sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    sudo chown $(id -u):$(id -g) $HOME/.kube/config

![20210215072105162.png][]

### \# 关闭swap（k8s禁止虚拟内存以提高性能）在（k8s-master01、k8s-node01、k8s-node02） ###

sed -ri 's/.*swap.*/#&/' /etc/fstab #永久
    reboot

### 在k8s-node01、k8s-node02上执行： ###

kubeadm join 192.168.60.10:6443 --token 51guny.dnojseiegh570hp4 \
        --discovery-token-ca-cert-hash sha256:2f99391a680837618cb8cca7c40d982e981d0fdae8a4b85a07bd8bda7dc01e84

# 改写/etc/hosts文件 #

127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
    ::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
    
    192.168.60.10 k8s-master01
    192.168.60.20 k8s-node01
    192.168.60.21 k8s-node02

# 加入主节点以及其余工作节点 #

执行安装日志中的加入命令即可

# 部署网络 #

### 在k8s-master01、k8s-node01、k8s-node02上执行：   wget https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70 1][]

### docker pull quay.io/coreos/flannel:v0.13.1-rc2 ###

### docker save quay.io/coreos/flannel:v0.13.1-rc2 -o flannel.tar.gz ###

kubectl apply -f kube-flannel.yml

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70 2][]

![2021021518151047.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210215072019200.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI=,size_16,color_FFFFFF,t_70
[20210215072105162.png]: https://img-blog.csdnimg.cn/20210215072105162.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210217170908159.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI=,size_16,color_FFFFFF,t_70
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[2021021518151047.png]: https://img-blog.csdnimg.cn/2021021518151047.png