CentOS 8 使用kubeadm部署单机版k8s及部署Ingress-nginx

最新推荐文章于 2025-07-25 19:04:54 发布

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最新推荐文章于 2025-07-25 19:04:54 发布 · 2.2k 阅读

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1 安装docker

1.1 添加yum源

curl https://download.docker.com/linux/centos/docker-ce.repo -o /etc/yum.repos.d/docker-ce.repo

1.2 安装 containerd包

 yum install https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm

1.3 安装docker

yum install docker-ce

systemctl start docker

systemctl enable  docker

1.4 添加阿里云镜像源

cat <<EOF > /etc/docker/daemon.json
{
  "registry-mirrors": [
    "https://3laho3y3.mirror.aliyuncs.com"
  ]
}
EOF


systemctl restart docker

2 安装K8S

2.1 下载k8s镜像

docker pull mirrorgooglecontainers/kube-apiserver:v1.15.0
docker pull mirrorgooglecontainers/kube-controller-manager:v1.15.0
docker pull mirrorgooglecontainers/kube-scheduler:v1.15.0
docker pull mirrorgooglecontainers/kube-proxy:v1.15.0
docker pull mirrorgooglecontainers/pause:3.1
docker pull mirrorgooglecontainers/etcd:3.3.10
docker pull coredns/coredns:1.3.1
docker tag docker.io/mirrorgooglecontainers/kube-apiserver:v1.15.0 k8s.gcr.io/kube-apiserver:v1.15.0
docker tag docker.io/mirrorgooglecontainers/kube-controller-manager:v1.15.0 k8s.gcr.io/kube-controller-manager:v1.15.0
docker tag docker.io/mirrorgooglecontainers/kube-scheduler:v1.15.0 k8s.gcr.io/kube-scheduler:v1.15.0
docker tag docker.io/mirrorgooglecontainers/kube-proxy:v1.15.0 k8s.gcr.io/kube-proxy:v1.15.0
docker tag docker.io/mirrorgooglecontainers/pause:3.1 k8s.gcr.io/pause:3.1
docker tag docker.io/mirrorgooglecontainers/etcd:3.3.10 k8s.gcr.io/etcd:3.3.10
docker tag docker.io/coredns/coredns:1.3.1 k8s.gcr.io/coredns:1.3.1

2.2 安装kubeadm等

添加源

cat > /etc/yum.repos.d/kubernetes.repo << EOF                        
[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

安装

yum -y install kubelet-1.15.0 kubeadm-1.15.0 kubectl-1.15.0

systemctl start kubelet
systemctl enable kubelet

2.3 初始化

 kubeadm init --kubernetes-version=v1.15.0 --pod-network-cidr=10.100.0.0/16 --ignore-preflight-errors='all'
[init] Using Kubernetes version: v1.15.0
[preflight] Running pre-flight checks
        [WARNING NumCPU]: the number of available CPUs 1 is less than the required 2
        [WARNING Port-6443]: Port 6443 is in use
        [WARNING Port-10251]: Port 10251 is in use
        [WARNING FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml]: /etc/kubernetes/manifests/kube-apiserver.yaml already exists
        [WARNING FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml]: /etc/kubernetes/manifests/kube-controller-manager.yaml already exists
        [WARNING FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml]: /etc/kubernetes/manifests/kube-scheduler.yaml already exists
        [WARNING FileAvailable--etc-kubernetes-manifests-etcd.yaml]: /etc/kubernetes/manifests/etcd.yaml already exists
        [WARNING IsDockerSystemdCheck]: detected "cgroupfs" as the Docker cgroup driver. The recommended driver is "systemd". Please follow the guide at https://kubernetes.io/docs/setup/cri/
        [WARNING SystemVerification]: this Docker version is not on the list of validated versions: 19.03.11. Latest validated version: 18.09
        [WARNING Hostname]: hostname "gauz" could not be reached
        [WARNING Hostname]: hostname "ga