1.升级内核
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
yum install -y https://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm
yum install -y --enablerepo="elrepo-kernel" kernel-ml.x86_64
grub2-mkconfig -o /boot/grub2/grub.cfg
reboot
2.关闭防火墙以及seliunx
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
sed -i s/enforcing/disabled/g /etc/selinux/config
3.网络配置
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
vm.swappiness = 0
EOF
modprobe br_netfilter
lsmod | grep br_netfilter
yum install -y ipset ipvsadm
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
EOF
chmod 755 /etc/sysconfig/modules/ipvs.modules
bash /etc/sysconfig/modules/ipvs.modules
swapoff -a
4.docker安装
curl http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo
yum install -y docker-ce
systemctl enable --now docker
cat > /etc/docker/daemon.json <<EOF
{
"exec-opts": [
"native.cgroupdriver=systemd"
]
}
EOF
systemctl restart docker
5.安装ori-dockerd
wget https://github.com/Mirantis/cri-dockerd/releases/download/v0.2.5/cri-dockerd-0.2.5-3.el7.x86_64.rpm
rpm -ivh cri-dockerd-0.2.5-3.el7.x86_64.rpm
systemctl enable cri-docker.service
systemctl enable --now cri-docker.socket
6.安装kubernetes
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=0
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF
yum install -y kubelet kubeadm kubectl
cat > /etc/sysconfig/kubelet << EOF
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"
EOF
systemctl enable kubelet
7.初始化kubernetes
kubeadm config images list
kubeadm config images pull --cri-socket unix:///var/run/cri-dockerd.sock
kubeadm init --kubernetes-version=v1.25.0 --pod-network-cidr=10.224.0.0/16 --apiserver-advertise-address=10.10.10.113 --cri-socket unix:///var/run/cri-dockerd.sock
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
export KUBECONFIG=/etc/kubernetes/admin.conf
kubeadm join 10.10.10.113:6443 --token r3lqbm.kn4z8ttasf3plf5x --discovery-token-ca-cert-hash sha256:b04ac294869e948894e3392fbd3f63307c6b197949ddf01f9258b6f23379be34 --cri-socket unix:///var/run/cri-dockerd.sock
8.配置kubernetes网络
kubectl create -f https:
wget --no-check-certificate https:
# vim custom-resources.yaml, 修改网段
kubectl apply -f custom-resources.yaml
# 获取命名空间
kubectl get ns
# 获取pods
kubectl get po -n calico-system
# 获取node
kubectl get no
# 设置主节点运行
kubectl taint nodes --all node-role.kubernetes.io/master-
# 1.24以上用这个
kubectl taint nodes --all node-role.kubernetes.io/control-plane-
9.安装dashboard
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-rc6/aio/deploy/recommended.yaml
kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard
kubectl proxy --address='0.0.0.0' --accept-hosts='^*$'
kubectl -n kubernetes-dashboard create token admin-user
备注
1. docker 使用代理
mkdir -p /etc/systemd/system/docker.service.d
cat > /etc/systemd/system/docker.service.d/http-proxy.conf << EOF
[Service]
Environment="HTTP_PROXY=http://10.10.12.182:8001"
Environment="HTTPS_PROXY=http://10.10.12.182:8001"
EOF
systemctl daemon-reload
systemctl restart docker
参考链接
