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安装docker
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关闭防火墙
systemctl stop firewalld systemctl disable firewalld
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关闭selinux
# 永久关闭 sed -i 's/enforcing/disabled' /etc/selinux/config # 临时关闭 setenforce 0
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关闭swap
# 临时关闭 swapoff -a # 永久关闭 vim /etc/fstab 注释掉/dev/mapper/centos-swap swap swap defaults 0 0
然后重启生效
systemctl reboot # 查看swap交换器是否都为0 free -m
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设置hosts
cat >> /etc/hosts << EOF 192.168.0.104 k8s-master 192.168.0.105 k8s-node1 192.168.0.106 k8s-node2 EOF
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将桥接的IPV4流量传递到iptables
cat > /etc/sysctl.d/k8s.conf <<EOF net.bridge.bridge-nf-call-ip6tables = 1 net.bridge.bridge-nf-call-iptables = 1 EOF
# 让上述配置生效 sysctl --system
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设置时间
yum install -y ntpdate -y ntpdate -u npt.api.bz # 设置时区为中国时区 timedatectl set-timezone Asia/Shanghai
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yum源切换与yum k8s
如果是x86_64的cpu
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
如果是mac m1的cpu
cat <<EOF > /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-aarch64/ 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
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安装kubeadm,kubelet,kubectl
在阿里云的安装步骤中写到
由于官网未开放同步方式, 可能会有索引gpg检查失败的情况, 这时请用
yum install -y --nogpgcheck kubelet kubeadm kubectl
安装setenforce 0 yum install -y --nogpgcheck kubelet kubeadm kubectl
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配置docker
在/etc/docker/daemon.json中增加配置
"exec-opts": ["native.cgroupdriver=systemd"]
重载配置,重启docker和kubelet
systemctl daemon-reload # docker需开机启动,否则初始化会失败 systemctl enable docker systemctl restart docker systemctl enable kubelet systemctl restart kubelet
后续步骤,无特殊说明的情况下,仅在master节点上执行
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初始化
ip为master的ip地址,其次注意版本,剩下的无需改动
kubeadm init --apiserver-advertise-address=192.168.0.104 --image-repository registry.cn-hangzhou.aliyuncs.com/google_containers --kubernetes-version v1.26.0 --service-cidr=10.96.0.0/12 --pod-network-cidr=10.244.0.0/16
如果出现异常,需要用
kubeadm reset
命令重置之后,再重新init -
配置kubectl命令工具
mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
验证kubectl命令
kubectl get nodes
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安装calico
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
kubernetes安装
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2022-04-22