rockylinux9安装docker版k8s-starstao

rockylinux9安装k8s

系统设置

关闭防火墙
systemctl disable firewalld && systemctl stop firewalld

关闭selinux
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config setenforce 0

临时让内核参数生效

modprobe br_netfilter
echo 1 > /proc/sys/net/bridge/bridge-nf-call-iptables
echo 1 > /proc/sys/net/ipv4/ip_forward

内核参数修改，如下文件添加如下内容
vim /etc/sysctl.conf

net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-iptables = 1
sysctl -p

关闭交换内存
swapoff -a && sysctl -w vm.swappiness=0
修改 fstab 不在挂载 swap
vi /etc/fstab
注释掉下面带有两个swap swap的这行
/swapfile swap swap defaults 0 0

安装ipvsadm

yum install -y ipvsadm

安装docker

配置docker源
yum config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo
或者国内配置阿里源
yum config-manager --add-repo=https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装docker
yum install -y docker-ce
修改docker配置

cat >> /etc/docker/daemon.json <<-EOF 
{ 
"exec-opts": ["native.cgroupdriver=systemd"] 
} 
EOF

重启docker

systemctl enable docker
systemctl restart docker

安装k8s

阿里云k8s镜像配置地址 https://developer.aliyun.com/mirror/kubernetes/?spm=a2c6h.25603864.0.0.64cd7616TtfM1h

配置阿里云docker版本k8s源

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

yum clean all && yum makecache

查看k8s所有版本

yum list kubeadm.x86_64 --showduplicates | sort -r
yum list kubelet.x86_64 --showduplicates | sort -r
yum list kubectl.x86_64 --showduplicates | sort -r

指定版本安装k8s
yum -y install kubeadm-1.20.1-0 kubelet-1.20.1-0 kubectl-1.20.1-0

systemctl enable kubelet.service

查看k8s所需镜像
kubeadm config images list

下载所需镜像
kubeadm config images pull

初始化master

kubeadm init --kubernetes-version=v1.20.1 --pod-network-cidr=10.244.0.0/16 --service-cidr=10.244.0.0/16 --apiserver-advertise-address=139.180.134.102 --ignore-preflight-errors=Swap

添加kube配置

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

其他节点加入k8s命令

kubeadm join 139.180.134.102:6443 --token 7b93nr.38m0cwcqi4lmsya1 \
    --discovery-token-ca-cert-hash sha256:f08f2c2ba69da402c6d864a5a0e67b67432404818668477442d36794582ce066

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rockylinux9安装docker版k8s