准备工作:
CentOS Linux release 7.9

hostnamectl set-hostname k8s-master
hostnamectl set-hostname k8s-node1


192.168.117.224 k8s-master
192.168.117.225 k8s-node1


yum -y install wget jq psmisc vim net-tools nfs-utils telnet yum-utils device-mapper-persistent-data lvm2 git network-scripts tar curl -y
systemctl stop firewalld && systemctl disable firewalld
systemctl stop iptables && systemctl disable iptables 


timedatectl set-timezone Asia/Shanghai
timedatectl set-local-rtc 0
systemctl restart rsyslog
systemctl restart crond

cat > kubernetes.conf<<EOF
#开启网桥模式【重要】
net.bridge.bridge-nf-call-iptables=1
#开启网桥模式【重要】
net.bridge.bridge-nf-call-ip6tables=1
net.ipv4.ip_forward=1
net.ipv4.tcp_tw_recycle=0
#禁止使用swap空间，只有当系统OOM时才允许使用它
vm.swappiness=0
#不检查物理内存是否够用
vm.overcommit_memory=1
#开启OOM
vm.panic_on_oom=0
fs.inotify.max_user_instances=8192
fs.inotify.max_user_watches=1048576
fs.file-max=52706963
fs.nr_open=52706963
#关闭ipv6【重要】
net.ipv6.conf.all.disable_ipv6=1
net.netfilter.nf_conntrack_max=2310720
EOF


cp kubernetes.conf /etc/sysctl.d/kubernetes.conf
modprobe ip_conntrack
sysctl -p /etc/sysctl.d/kubernetes.conf


#日志保存
mkdir /etc/systemd/journal.conf.d
cat >/etc/systemd/journal.conf.d/99-prophet.conf <<EOF
[Journal]
#持久化保存到磁盘
Storage=persistent
#压缩历史日志
Compress=yes
SyncIntervalSec=5m
RateLimitInterval=30s
RateLimitBurst=1000
#最大占用空间10G
SystemMaxUse=10G
#单日志文件最大200M
SystemMaxFileSize=200M
#日志保存时间2周
MaxRetentionSec=2week
#不将日志转发到syslog
ForwardToSyslog=no
EOF

systemctl restart systemd-journald



#kube-proxy开启ipvs的前置条件

yum install -y ipset ipvsadm
for i in $(ls /usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs|grep -o "^[^.]*");do echo $i; /sbin/modinfo -F filename $i >/dev/null 2>&1 && /sbin/modprobe $i;done

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum install -y docker-ce docker-ce-cli containerd.io


cat << EOF > /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF

modprobe overlay
modprobe br_netfilter


mkdir -p /etc/containerd
containerd config default > /etc/containerd/config.toml


vim /etc/containerd/config.toml
127 SystemdCgroup = true
63 sandbox_image = "registry.aliyuncs.com/google_containers/pause:3.9"


systemctl restart containerd
systemctl enable containerd


cat  /etc/docker/daemon.json
{
  "registry-mirrors": ["https://gix2yhc1.mirror.aliyuncs.com"],
#Docker的镜像加速器配置。加速地址可以登录阿里云官网获取
  "exec-opts": ["native.cgroupdriver=systemd"],
#指定了Docker容器使用的cgroup驱动程序并交由system管理
  "log-driver": "json-file",
#这个配置项指定了Docker容器日志的驱动程序
  "log-opts": {
    "max-size": "100m"
#定了单个容器日志文件的最大大小为100m
}
}

systemctl daemon-reload
systemctl restart docker.service
systemctl enable docker.service


sudo cat <<EOF | tee /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.30/rpm/
enabled=1
gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes-new/core/stable/v1.30/rpm/repodata/repomd.xml.key
EOF
yum clean all
yum makecache

yum install  kubectl kubeadm kubelet -y



cat > /etc/sysconfig/kubelet <<EOF
KUBELET_EXTRA_ARGS="--cgroup-driver=systemd"
EOF
systemctl enable kubelet.service

部署master
kubeadm config images list



kubeadm init \
--apiserver-advertise-address=192.168.117.224 \
--image-repository registry.aliyuncs.com/google_containers \
--kubernetes-version v1.30.2 \
--service-cidr=10.1.0.0/16 \
--pod-network-cidr=10.244.0.0/16 --v=6

##失败可以执行 
kubeadm reset -f
journalctl -u kubelet



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

echo "export KUBECONFIG=/etc/kubernetes/admin.conf" >> ~/.bashrc

kubeadm token list

#查看密码
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'


#生成新令牌，加入node
kubeadm token create --print-join-command


kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml



kubectl get nodes
kubectl get pods -n kube-system






 sudo systemctl restart kubelet