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# 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

Image Added

• Create the nginx propagation policy

Image Added

East-West Edge-to-Edge Networking

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