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East-West Edge-to-Edge Networking

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Environmental Information (CentOS8.0 4U8G)

Username & Password: root/Akraino2021

Deployment Manual

Deploy cloud nodes (kubeEdge-cloud)

• Disable boot firewall

# systemctl disable firewalld

• Install Docker

# yum install wget container-selinux -y

# wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

# yum erase runc -y

# rpm -ivh containerd.io-1.2.6-3.3.el7.x86_64.rpm

Note: The above steps do not need to be operated in centos7

# update-alternatives --set iptables /usr/sbin/iptables-legacy

# yum install -y yum-utils device-mapper-persistent-data lvm2 && yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo && yum makecache

# yum -y install docker-ce

# systemctl enable docker.service && systemctl start docker

• Configure yum source

[root@kubeEdge-cloud ~]# cat <<EOF > /etc/yum.repos.d/kubernetes.repo

[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

• Install Kubeadm, kubectl

# yum makecache

# yum install kubelet-1.21.0-0.x86_64 kubeadm-1.21.0-0.x86_64 kubectl-1.21.0-0.x86_64

Note: The current KubeEdge version does not match the 1.22 version of K8s, and the latest version cannot be installed.

• Configure the kernel parameters

[root@kubeEdge-cloud ~]# cat <<EOF >  /etc/sysctl.d/k8s.conf

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

vm.swappiness=0

EOF

[root@kubeEdge-cloud ~]# sysctl --system

[root@kubeEdge-cloud ~]# modprobe br_netfilter

[root@kubeEdge-cloud ~]# sysctl -p /etc/sysctl.d/k8s.conf

Load ipvs related kernel modules

If you reboot, you need to reload (it can be written in /etc/rc.local to automatically load at boot)

[root@ke-cloud ~]# modprobe ip_vs

[root@ke-cloud ~]# modprobe ip_vs_rr

[root@ke-cloud ~]# modprobe ip_vs_wrr

[root@ke-cloud ~]# modprobe ip_vs_sh

[root@ke-cloud ~]# modprobe nf_conntrack_ipv4

Check whether loading is successful

[root@ke-cloud ~]# lsmod | grep ip_vs

• Pull Mirror

[root@kubeEdge-cloud ~]# kubeadm config images list

[root@kubeEdge-cloud ~]# kubeadm config images pull

• Initialize the cluster

[root@ke-cloud ~]# kubeadm init --kubernetes-version=v1.17.9 \

--pod-network-cidr=10.244.0.0/16 \

                      --apiserver-advertise-address=192.168.0.238 \

                    --ignore-preflight-errors=Swap