kubeadm安装k8s集群

╰+哭是因爲堅強的太久メ 2023-06-27 05:34 25阅读 0赞

kubeadm安装k8s集群
    系统配置：
    
     1. master：2核CPU，2G内存 IP：192.168.10.200
     2. node1：2核CPU，2G内存 IP：192.168.10.201
     3.  node2：2核CPU，2G内存 IP：192.168.10.202
     4. centos7系统
    一：三台机器都做，和hosts文件
    1.master：配置IP和主机名
    [root@localhost ~]# hostnamectl set-hostname master-iot.com
    [root@localhost ~]# bash
    2.node1：配置IP和主机名
    [root@localhost ~]# hostnamectl set-hostname node1-iot.com
    [root@localhost ~]# bash
    3.node2：配置IP和主机名
    [root@localhost ~]# hostnamectl set-hostname node2-iot.com
    [root@localhost ~]# bash
    
    二：三台机器都做：关闭防火墙和selinux
    [root@master-iot ~]# iptables -F
    [root@master-iot ~]# setenforce 0
    setenforce: SELinux is disabled
    
    三：三台机器都做：调整内核参数
    [root@master-iot ~]# cat > /etc/sysctl.d/k8s.conf  << EOF
    net.bridge.bridge-nf-call-iptables = 1
    net.bridge.bridge-nf-call-ip6tables = 1
    net.ipv4.ip_forward = 1
    net.ipv4.tcp_tw_recycle=0
    vm.swappiness=0
    vm.overcommit_memory=1
    vm.panic_on_oom=0
    fs.inotify.max_user_instances=8192
    fs.inotify.max_user_watches=8192
    fs.file-max=52706963
    net.ipv6.conf.all.disable_ipv6=1
    net.netfilter.nf_conntrack_max=2310720
    EOF
    [root@master-iot ~]# sysctl -p
    [root@master-iot ~]# swapoff -a
    
    四：三台机器都做：配置docker-ce和k8s
    [root@master-iot ~]# cd /etc/yum.repos.d/
    [root@master-iot yum.repos.d]# wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
    [root@master-iot yum.repos.d]# cat > kubernetes.repo << EOF
    [kuberneten]
    name=kubernetes repo
    baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
    gpgcheck=1
    gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
    enable=1
    EOF
    [root@master-iot yum.repos.d]# wget https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
    [root@master-iot yum.repos.d]#  wget https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
    [root@master-iot yum.repos.d]# rpm --import rpm-package-key.gpg yum-key.gpg
    [root@node1-iot yum.repos.d]# yum -y install docker-ce kubelet kubeadm kubectl
    [root@master-iot yum.repos.d]# systemctl enable docker && systemctl start docker && systemctl enable kubelet
    Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
    Created symlink from /etc/systemd/system/multi-user.target.wants/kubelet.service to /usr/lib/systemd/system/kubelet.service.
    
    五：master上面做：
    [root@master-iot yum.repos.d]# kubeadm init --image-repository=registry.aliyuncs.com/google_containers --pod-network-cidr=10.244.0.0/16  --service-cidr=10.96.0.0/12
    [root@master-iot ~]# mkdir -p $HOME/.kube
    [root@master-iot ~]# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
    [root@master-iot ~]# sudo chown $(id -u):$(id -g) $HOME/.kube/config
    
    六：node上面做：
    [root@node1-iot yum.repos.d]# kubeadm join 192.168.10.200:6443 --token pocal6.3iv9yvsbh25qbvgg     --discovery-token-ca-cert-hash sha256:6d7f0c6443028e93d9cd42981de659c6bc7dc100b03a89b4ec814c08bbb82864
    
    七：master上面做：
    [root@master-iot ~]# kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml
    [root@master-iot ~]# kubectl get node
    NAME             STATUS   ROLES    AGE   VERSION
    master-iot.com   Ready    master   17m   v1.17.0
    node1-iot.com    Ready    <none>   14m   v1.17.0
    node2-iot.com    Ready    <none>   15s   v1.17.0
    
    八：至此搭建完成！