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最新推荐文章于 2025-12-28 12:56:53 发布

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1.更新软件包
[root@localhost ~]# dnf update
2.三台机器安装Docker
[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

192.168.40.128 k8s-master master
192.168.40.129 k8s-node1 node1
192.168.40.130 k8s-node2 node2

[root@localhost ~]# dnf install yum-utilsdevice-mapper-persistent-data lvm2
[root@localhost ~]# dnf remove docker
docker-client
docker-client-latest
docker-common
docker-latest
docker-latest-logrotate
docker-logrotate
docker-engine
[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost~]# wget https://download.docker.com/linux/centos/docker-ce.repo
[root@localhost~]# dnf update
[root@localhost~]# dnf install docker-ce –nobest
3.开机自启docker并启动
[root@localhost~]# systemctl enable docker
[root@localhost~]# systemctl start docker
[root@localhost~]# systemctl status docker
●docker.service - Docker Application Container Engine
Loaded: loaded(/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Wed2019-12-18 10:25:46 EST; 6s ago
Docs: https://docs.docker.com
Main PID: 73169 (dockerd)
Tasks: 32 (limit: 5935)
Memory: 105.9M
CGroup: /system.slice/docker.service
├─73169 /usr/bin/dockerd
└─73180 docker-containerd --config/var/run/docker/containerd/containerd.toml

4.配置内核参数
[root@localhost~]# vim /etc/sysctl.d/k8s.conf
[root@localhost~]# cat /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables= 1
net.bridge.bridge-nf-call-iptables= 1
net.ipv4.ip_nonlocal_bind= 1
net.ipv4.ip_forward= 1
vm.swappiness=0

[root@localhost~]# sysctl –system

5.添加必要内核模块
[root@localhost~]# vim /etc/sysconfig/modules/ipvs.modules
[root@localhost~]# cat /etc/sysconfig/modules/ipvs.modules
#!/bin/bash
modprobe-- ip_vs
modprobe-- ip_vs_rr
modprobe-- ip_vs_wrr
modprobe-- ip_vs_sh
modprobe-- nf_conntrack_ipv4
[root@localhost~]# chmod +x /etc/sysconfig/modules/ipvs.modules
[root@localhost~]# ./etc/sysconfig/modules/ipvs.modules
-bash:./etc/sysconfig/modules/ipvs.modules: 没有那个文件或目录
[root@localhost~]# /etc/sysconfig/modules/ipvs.modules

6添加kubeadm的yum源

[root@localhost~]# cat < /etc/yum.repos.d/kubernetes.repo

[kubernetes]
name=Kubernetes
baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpghttps://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
exclude=kube*
EOF

配置master节点

[root@localhost~]# cd /etc/yum.repos.d/
[root@localhost~]# mv docker-ce.repo{,.back}
[root@localhost~]# dnf update –nobest
[root@localhost~]# dnf install ipvsadm
[root@localhost~]# yum install -y kubelet kubeadm kubectl --disableexcludes=Kubernetes
[root@localhost~]# systemctl enable kubelet && systemctl start kubelet

[root@localhost~]# kubeadm config print init-defaults > kubeadm-init.yaml

[root@localhost~]# vim kubeadm-init.yaml
[root@localhost~]# cat kubeadm-init.yaml
apiVersion:kubeadm.k8s.io/v1beta2
bootstrapTokens:
-groups:
-system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:

signing
authentication
kind:InitConfiguration
localAPIEndpoint:
advertiseAddress: 1.2.3.4
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: localhost.localdomain
taints:
effect: NoSchedule
key: node-role.kubernetes.io/master

apiServer:
timeoutForControlPlane: 4m0s
apiVersion:kubeadm.k8s.io/v1beta2
certificatesDir:/etc/kubernetes/pki
clusterName:kubernetes
controllerManager:{}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository:k8s.gcr.io
kind:ClusterConfiguration
kubernetesVersion:v1.17.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler:{}
[root@localhost~]# vim kubeadm-init.yaml
[root@localhost~]# cat kubeadm-init.yaml
apiVersion:kubeadm.k8s.io/v1beta2
bootstrapTokens:
-groups:
-system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:

signing
authentication
kind:InitConfiguration
localAPIEndpoint:
advertiseAddress: 192.168.40.128
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
name: localhost.localdomain
taints:
effect: NoSchedule
key: node-role.kubernetes.io/master

apiServer:
timeoutForControlPlane: 4m0s
apiVersion:kubeadm.k8s.io/v1beta2
certificatesDir:/etc/kubernetes/pki
clusterName:kubernetes
controllerManager:{}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository:k8s.gcr.io
kind:ClusterConfiguration
kubernetesVersion:v1.17.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler:{}

apiVersion:kubeproxy.config.k8s.io/v1alpha1
kind:KubeProxyConfiguration
mode:“ipvs”

8.拉取镜像

[root@localhost~]# kubeadm config images pull --config kubeadm-init.yaml
W121810:48:44.641505 75319 validation.go:28]Cannot validate kube-proxy config - no validator is available
W121810:48:44.641691 75319 validation.go:28]Cannot validate kubelet config - no validator is available
[config/images]Pulled k8s.gcr.io/kube-apiserver:v1.17.0
[config/images]Pulled k8s.gcr.io/kube-controller-manager:v1.17.0
[config/images]Pulled k8s.gcr.io/kube-scheduler:v1.17.0
[config/images]Pulled k8s.gcr.io/kube-proxy:v1.17.0
[config/images]Pulled k8s.gcr.io/pause:3.1
[config/images]Pulled k8s.gcr.io/etcd:3.4.3-0
[config/images]Pulled k8s.gcr.io/coredns:1.6.5

[root@localhost~]# docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
k8s.gcr.io/kube-proxy v1.17.0 7d54289267dc 10 days ago 116MB
k8s.gcr.io/kube-apiserver v1.17.0 0cae8d5cc64c 10 days ago 171MB
k8s.gcr.io/kube-controller-manager v1.17.0 5eb3b7486872 10 days ago 161MB
k8s.gcr.io/kube-scheduler v1.17.0 78c190f736b1 10 days ago 94.4MB
k8s.gcr.io/coredns 1.6.5 70f311871ae1 6 weeks ago 41.6MB
k8s.gcr.io/etcd 3.4.3-0 303ce5db0e90 7 weeks ago 288MB
k8s.gcr.io/pause 3.1 da86e6ba6ca1 24 months ago 742kB

9.添加开机自启并启动kublet
[root@localhost~]# systemctl enable kubelet
[root@localhost~]# systemctl start kubelet
Kubelet无法启动可能是您的交换分区没有关闭
[root@localhost~]# swapoff -a

10.初始化master节点
[root@localhost~]# kubeadm init --pod-network-cidr=10.244.0.0/16

YourKubernetes control-plane has initialized successfully!

To startusing your cluster, you need to run the following as a regular user:

mkdir -p $H OME /. k u b es u d oc p - i / e t c / k u b er n e t es / a d min . co n f$ HOME/.kube/config
sudo chown $(i d - u) :$ (id -g)$HOME/.kube/config

Youshould now deploy a pod network to the cluster.
Run"kubectl apply -f [podnetwork].yaml" with one of the options listedat:
https://kubernetes.io/docs/concepts/cluster-administration/addons/

Then youcan join any number of worker nodes by running the following on each as root:

kubeadmjoin 192.168.40.128:6443 --token eitxr6.l7que99ui33phdts
–discovery-token-ca-cert-hashsha256:2b65bf29e32c1906391b66796f3cd5cf79bce239b43ff82fefb73ace984ac294

11.根据提示准备kubeconfig配置文件
[root@localhost ~]# mkdir -p $KaTeX parse error: Expected 'EOF', got '#' at position 30: \dotsot@localhost ~]#̲ sudo cp -i /et\dots$ HOME/.kube/config
[root@localhost ~]# sudochown $(i d - u) :$ (id -g) $HOME/.kube/config

12.查看master的组件是否正常
[root@localhost ~]# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {“health”:“true”}
[root@localhost ~]# kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-6955765f44-q42ch 1/1 Running 0 3m11s
kube-system coredns-6955765f44-xld2q 1/1 Running 0 3m11s
kube-system etcd-localhost.localdomain 1/1 Running 0 3m27s
kube-system kube-apiserver-localhost.localdomain 1/1 Running 0 3m27s
kube-system kube-controller-manager-localhost.localdomain 1/1 Running 0 3m27s
kube-system kube-proxy-zb4dq 1/1 Running 0 3m11s
kube-system kube-scheduler-localhost.localdomain 1/1 Running 0 3m26s

[root@localhost ~]# kubectl get nodes
NAME STATUS ROLES AGE VERSION
localhost.localdomain Ready master 4m38s v1.17.0

13.配置俩台node节点
这行是在master节点初始化完成后提示的
[root@localhost ~]# kubeadm join 192.168.40.128:6443 --tokeneitxr6.l7que99ui33phdts \

–discovery-token-ca-cert-hashsha256:2b65bf29e32c1906391b66796f3cd5cf79bce239b43ff82fefb73ace984ac294

在master节点插看是否有子节点的信息
[root@localhost ~]# kubectl get nodes1.更新软件包
[root@localhost ~]# dnf update
2.三台机器安装Docker
[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6