《Centos7——k8s搭建》

程序员文章站 2022-03-01 13:05:11

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k8s搭建

环境准备：
Centos7三台(192.168.179.130/192.168.179.131/192.168.179.132)
4G4核(3G4核也可以)

1、关闭防火墙

systemctl stop firewalld -----关闭防火墙

setenforce 0 -----关闭selinux

2、时间同步

yum -y install ntpdate

ntpdate pool.ntp.org

3、修改主机名(三台分别修改)

hostnamectl set-hostname k8s-master
hostnamectl set-hostname k8s-node1
hostnamectl set-hostname k8s-node2

4、编辑hosts文件

vim /etc/hosts
192.168.179.130 k8s-master
192.168.179.131 k8s-node1
192.168.179.132 k8s-node2

5: 安装指定版本的docker

wget https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo -O
/etc/yum.repos.d/docker-ce.repo

或直接将docker-ce.repo(下面的内容)放到/etc/yum.repos/目录下
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/

$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-debuginfo]
name=Docker CE Stable - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-

$basearch/stable
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-stable-source]
name=Docker CE Stable - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/stable
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge]
name=Docker CE Edge - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/

$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-debuginfo]
name=Docker CE Edge - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-

$basearch/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-edge-source]
name=Docker CE Edge - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/edge
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test]
name=Docker CE Test - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/

$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-debuginfo]
name=Docker CE Test - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-

$basearch/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-test-source]
name=Docker CE Test - Sources
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/source/test
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly]
name=Docker CE Nightly - $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/

$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-debuginfo]
name=Docker CE Nightly - Debuginfo $basearch
baseurl=https://mirrors.aliyun.com/docker-ce/linux/centos/7/debug-

$basearch/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

[docker-ce-nightly-source]
name=Docker CE Nightly - Sources
baseurl=https://mirrors.aliyun.com/docker-

ce/linux/centos/7/source/nightly
enabled=0
gpgcheck=1
gpgkey=https://mirrors.aliyun.com/docker-ce/linux/centos/gpg

安装指定版本的docker:

yum -y install docker-ce-18.06.3.ce-3.el7 -----安装docker

版本验证：
[[email protected] docker]# docker --version
Docker version 18.06.3-ce, build d7080c1

6：运行docker

systemctl enable docker

systemctl start docker

查询可用版本：
yum list docker-ce --showduplicates | sort -r

7：docker镜像加速

[[email protected]-master docker]# cat daemon.json 
{
    "exec-opts": ["native.cgroupdriver=systemd"],
    "log-driver": "json-file",
    "log-opts": {
    "max-size": "100m"
    },
    "storage-driver": "overlay2",
    "registry-mirrors":[
        "https://kfwkfulq.mirror.aliyuncs.com",
        "https://2lqq34jg.mirror.aliyuncs.com",
        "https://pee6w651.mirror.aliyuncs.com",
        "http://hub-mirror.c.163.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com"
    ]
}

重启：
systemctl restart docker

8：上传k8s的yum源

cat /etc/yum.repos/k8s.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

yum -y install kubelet-1.17.0 kubeadm-1.17.0 kubectl-1.17.0(master上执行)

9：设置kubelet 开机自启

systemctl enable kubelet -----开机自启
先不要启动它！！

10 初始化集群

上传k8s压缩包k8s-v1.17.0.zip，解压，然后导入镜像
docker load -i k8s_v1.17.0.tar
在master节点上执行：
kubeadm init --apiserver-advertise-address=192.168.179.130 --image-

repository registry.aliyuncs.com/google_containers --kubernetes-version 

v1.17.0 --service-cidr=10.1.0.0/16 --pod-network-cidr=10.244.0.0/16
报错处理：
[ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: 

/proc/sys/net/bridge/bridge-nf-call-iptables contents are not set to 1
echo "1" > /proc/sys/net/bridge/bridge-nf-call-iptables
[ERROR Swap]: running with swap on is not supported. Please disable swap
swapoff -a  （3个节点都要执行）

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

11 将node节点加入到集群中：

kubeadm join 192.168.179.130:6443 --token sbky7r.d2upkq8dhkjz033s \
    --discovery-token-ca-cert-hash 

sha256:d48fbf3738fddea473d9540b0966a723b1295e79a0adad71d7c731bb73e87994
验证：
[[email protected]-master yum.repos.d]# kubectl get nodes
NAME         STATUS     ROLES    AGE     VERSION
k8s-master   NotReady   master   7m24s   v1.17.0
k8s-node1    NotReady   <none>   2m23s   v1.17.0
k8s-node2    NotReady   <none>   27s     v1.17.0

12：安装k8s的网络组件falneel

[[email protected]-master k8s-v1.17.0]# kubectl apply -f kube-flannel.yml 
podsecuritypolicy.policy/psp.flannel.unprivileged created
clusterrole.rbac.authorization.k8s.io/flannel created
clusterrolebinding.rbac.authorization.k8s.io/flannel created
serviceaccount/flannel created
configmap/kube-flannel-cfg created
daemonset.apps/kube-flannel-ds-amd64 created
daemonset.apps/kube-flannel-ds-arm64 created
daemonset.apps/kube-flannel-ds-arm created
daemonset.apps/kube-flannel-ds-ppc64le created
daemonset.apps/kube-flannel-ds-s390x created

13: 查看pod转态

[[email protected]-master k8s-v1.17.0]# kubectl get pod -A
NAMESPACE     NAME                                 READY   STATUS    

RESTARTS   AGE
kube-system   coredns-9d85f5447-jf28g              1/1     Running   0    

      14m
kube-system   coredns-9d85f5447-xrwgf              1/1     Running   0    

      14m
kube-system   etcd-k8s-master                      1/1     Running   0    

      14m
kube-system   kube-apiserver-k8s-master            1/1     Running   0    

      14m
kube-system   kube-controller-manager-k8s-master   1/1     Running   0    

      14m
kube-system   kube-flannel-ds-amd64-9qbnz          1/1     Running   0    

      29s
kube-system   kube-flannel-ds-amd64-jjzx9          1/1     Running   0    

      29s
kube-system   kube-flannel-ds-amd64-mq68h          1/1     Running   0    

      29s
kube-system   kube-proxy-5j497                     1/1     Running   0    

      10m
kube-system   kube-proxy-cl655                     1/1     Running   0    

      8m20s
kube-system   kube-proxy-d7wrw                     1/1     Running   0    

      14m
kube-system   kube-scheduler-k8s-master            1/1     Running   0    

      14m

14：再次查看node状态

[[email protected]-master k8s-v1.17.0]# kubectl get nodes
NAME         STATUS   ROLES    AGE     VERSION
k8s-master   Ready    master   16m     v1.17.0
k8s-node1    Ready    <none>   11m     v1.17.0
k8s-node2    Ready    <none>   9m12s   v1.17.0
已经变为ready！！

《Centos7——k8s搭建》

k8s搭建

1、关闭防火墙

2、时间同步

3、修改主机名(三台分别修改)

4、编辑hosts文件

5: 安装指定版本的docker

6：运行docker

7：docker镜像加速

8：上传k8s的yum源

9：设置kubelet 开机自启

10 初始化集群

11 将node节点加入到集群中：

12：安装k8s的网络组件falneel

13: 查看pod转态

14：再次查看node状态

搭建一个良好的自媒体与粉丝的关系

vue.js从安装到搭建过程详解

详解Vue.js入门环境搭建

Linux基础(01)开发环境的搭建

PyQt5实战1-搭建conda环境

外贸网站制作用PageAdmin建站系统搭建有哪些优势？

使用Nginx反向代理与proxy_cache缓存搭建CDN服务器的配置方法

k8s中负载均衡器【ingress-nginx】部署

从零开始使用 Webpack 搭建 Vue 开发环境

如何批量删除k8s资源对象

《Centos7——k8s搭建》

k8s搭建

1、关闭防火墙

2、时间同步

3、修改主机名(三台分别修改)

4、 编辑hosts文件

5: 安装指定版本的docker

6：运行docker

7：docker镜像加速

8：上传k8s的yum源

9：设置kubelet 开机自启

10 初始化集群

11 将node节点加入到集群中：

12： 安装k8s的网络组件falneel

13: 查看pod转态

14： 再次查看node状态

搭建一个良好的自媒体与粉丝的关系

vue.js从安装到搭建过程详解

详解Vue.js入门环境搭建

Linux基础(01)开发环境的搭建

PyQt5实战1-搭建conda环境

外贸网站制作用PageAdmin建站系统搭建有哪些优势？

使用Nginx反向代理与proxy_cache缓存搭建CDN服务器的配置方法

k8s中负载均衡器【ingress-nginx】部署

从零开始使用 Webpack 搭建 Vue 开发环境

如何批量删除k8s资源对象

4、编辑hosts文件

12：安装k8s的网络组件falneel

14：再次查看node状态