Overview

The purpose of this blueprint is an end-to-end technology solution for mobile game deployed across multiple heterogeneous edge nodes using various network access protocols such as mobile and WiFi and others. This blueprint demonstrates how an application leverages a distributed and multi access network edge environment in order to get all the benefits of edge computing.

This is the very first release of this new blueprint as part of the Akraino PCEI family. Current focus for this release is to enable open source Karmada based cloud federation & kubeEdge/EdgeMesh based East-West networking functionality.

Multi-cluster Management

Environmental Information (CentOS8.0 4U8G)

Username & Password: root/Akraino2021

Deployment Manual

Karmada control plane deployment

• 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

• Install Kind

# curl –Lo ./kind https://kind.sigs.k8s.io/d1/v0.10.0/kind-linux-amd64

# chmod +x ./kind

# mv ./kind /usr/local/bin/kind

# kind version

• Install Go and configure the Golang environment

# wget https://golang.google.cn/dl/go1.17.0.linux-amd64.tar.gz

# tar –zxvf  go1.17.0.linux-amd64.tar.gz –C /usr/local

# vi /etc/profile

Add at the end of file:

# golang env

export GOROOT=/usr/local/go

export GOPATH=/data/gopath

export PATH=$PATH:$GOROOT/bin:$GOPATH/bin

# source /etc/profile

# mkdir -p /data/gopath && cd /data/gopath

# mkidr –p src pkg bin

• Configure yum source

# 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 KubeCtl

# yum makecache

# yum instal –y kubectl

• Install Karmada control plane components

# git clone https://github.com/karmada-io/karmada

# cd karmada

# hack/local-up-karmada.sh

Edge cluster deployment

• 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

• 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 the 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

• Install Kubelet

1）Get docker cgroups

# DOCKER_CGROUPS=$(docker info | grep 'Cgroup Driver' | cut -d' ' -f4)

# echo $DOCKER_CGROUPS

cgroupfs

2）Configure cgroups for kubelet

# cat >/etc/sysconfig/kubelet<<EOF

KUBELET_EXTRA_ARGS="--cgroup-driver=$DOCKER_CGROUPS --pod-infra-container-image=k8s.gcr.io/pause:3.5"

EOF

3）Start kubelet

# systemctl daemon-reload

# systemctl enable kubelet && systemctl start kubelet

• Initialize the cluster

# 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

• Install network plugin

1）Download the yaml file of flannel plug-in.

# cd ~ && mkdir flannel && cd flannel

# curl -O https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

2）Startup

# kubectl apply -f ~/flannel/kube-flannel.yml

• Log in to the karmada-host node and join the multi-cluster (the karmada.config below refers to the kubeconfig of the existing k8s cluster)

# hack/create-cluster.sh member1 $HOME/.kube/karmada.config
# go get github.com/karmada-io/karmada/cmd/karmadactl

# karmadactl join cluster01--cluster-kubeconfig=$HOME/.kube/karmada.config

Nginx application deployment

• Create nginx deployment

• Create the nginx propagation policy

East-West Edge-to-Edge Networking

In progress.