RHEL(Redhat)7.6安装部署kubernetes-1.14.3集群

配置阿里云kubernetes仓库源：

vim /etc/yum.repo.d/kubernetes.repo

[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=0

配置docker仓库源：

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

[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://download.docker.com/linux/centos/7/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://download.docker.com/linux/centos/gpg

配置epel仓库源：

[fedora]
name=fedora
baseurl= https://dl.fedoraproject.org/pub/epel/7/x86_64/
enabled=1
gpgcheck=0

配置centos仓库源：

[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
baseurl=http://mirror.centos.org/centos/7.6.1810/os/$basearch/
enable=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#released updates
[updates]
name=CentOS-$releasever - Updates
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
baseurl=http://mirror.centos.org/centos/7.6.1810/updates/$basearch/
enable=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
baseurl=http://mirror.centos.org/centos/7.6.1810/extras/$basearch/
enable=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
 
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
baseurl=http://mirror.centos.org/centos/7.6.1810/centosplus/$basearch/
enable=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

关闭selinux：

SELINUX=disabled

setenforce 0

关闭swap

swapoff -a

vim /etc/fstab

#UUID=c8e019ab-386c-453a-ae34-75ed3dcb4c57 swap  swap    defaults        0 0

关闭防火墙：

iptables -F
iptables -X
iptables -Z
systemctl stop firewalld
systemctl disable firewalld

安装docker-ce:

yum -y install docker-ce

配置docker驱动为systemd：

参考： https://kubernetes.io/docs/setup/cri/

vim /etc/docker/daemon.json

{
    "exec-opts": ["native.cgroupdriver=systemd"],
    "log-driver": "json-file",
    "log-opts": {
         "max-size": "100m"
    },
    "storage-driver": "overlay2",
    "storage-opts": [
    "overlay2.override_kernel_check=true"
    ]
}

系统内核参数设置：

vim /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1    
vm.swappiness=0

重新加载内核参数

sysctl --system

启动docker：

systemctl start docker
systemctl enable docker

安装kubernetes:

yum install -y kubelet kubeadm kubectl
systemctl enable kubelet

获取要pull的镜像列表：kubeadm config images pull

参考： https://yq.aliyun.com/articles/657726

由于k8s.gcr.io的Google无法下载，故从阿里云上下载，重新打上k8s.gcr.io的tag

docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.14.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.14.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.14.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.14.3
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.3.10
docker pull registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.3.1

重新打tag

docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-apiserver:v1.14.3  k8s.gcr.io/kube-apiserver:v1.14.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-controller-manager:v1.14.3 k8s.gcr.io/kube-controller-manager:v1.14.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-scheduler:v1.14.3 k8s.gcr.io/kube-scheduler:v1.14.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/kube-proxy:v1.14.3 k8s.gcr.io/kube-proxy:v1.14.3
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.1 k8s.gcr.io/pause:3.1
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/etcd:3.3.10 k8s.gcr.io/etcd:3.3.10
docker tag registry.cn-hangzhou.aliyuncs.com/google_containers/coredns:1.3.1 k8s.gcr.io/coredns:1.3.1