How to build a K8S cluster and install docker under Hyper-V

If you have installed the Win10 system and want to build a k8s cluster, the Hyper-V that comes with Win10 is also a very suitable virtual machine environment. In the previous section, we installed two virtual machines. In this section, we will install Docker on both.

master: 192.168.137.2

node1: 192.168.137.3

root password: 123456

1. Log in to the virtual machine using ssh

With ssh, you can directly connect to the virtual machine in the win10 host

ssh [email protected]

2. Turn off security configuration

vi /etc/selinux/config 

3. Turn off the firewall

systemctl stop firewalld
systemctl disable firewalld

4. Permanently disable swap

swapoff -a
vi /etc/fstab

Use # to comment out the swap line

5. Install the latest version of docker

https://docs.docker.com/install/linux/docker-ce/centos/

Uninstall the old version of Docker

sudo yum remove docker \
         docker-client \
         docker-client-latest \
         docker-common \
         docker-latest \
         docker-latest-logrotate \
         docker-logrotate \
         docker-engine

Install dependency packages

sudo yum install -y yum-utils \
 device-mapper-persistent-data \
 lvm2

Configure Docker repository source

sudo yum-config-manager \
  --add-repo \
  https://download.docker.com/linux/centos/docker-ce.repo

Install Docker

sudo yum install docker-ce docker-ce-cli containerd.io

Let Docker start automatically

systemctl enable docker
systemctl start docker

Check whether the installation is successful

docker -v

6. Configure the cgroupdriver type for Alibaba Cloud Image Accelerator and Docker

Set to systemd to be consistent with k8s

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
 "registry-mirrors": ["https://pmp7i8xs.mirror.aliyuncs.com"],
 "exec-opts": ["native.cgroupdriver=systemd"]
}
EOF

Restart Docker

sudo systemctl daemon-reload
sudo systemctl restart docker

TBD: After configuring the docker of two virtual machines, the next step is to install k8s on the two virtual machines

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