jarno / kubeadm-init.sh

swapoff /dev/xxx # disable in /etc/fstab also systemctl mask --now firewalld echo br_netfilter >> /etc/modules-load.d/kubernetes.conf modprobe br_netfilter sysctl -w net.ipv4.ip_forwarding=1 | tee -a /etc/sysctl.conf sysctl -w net.bridge.bridge-nf-call-iptables=1 | tee -a /etc/sysctl.conf sysctl -w net.bridge.bridge-nf-call-ip6tables=1 | tee -a /etc/sysctl.conf cat <<EOF | sudo tee /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-\$basearch enabled=1 gpgcheck=1 gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg exclude=kubelet kubeadm kubectl EOF export OS=CentOS_8 export VERSION=1.24 curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$OS/devel:kubic:libcontainers:stable.repo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable:cri-o:$VERSION.repo https://download.opensuse.org/repositories/devel:kubic:libcontainers:stable:cri-o:$VERSION/$OS/devel:kubic:libcontainers:stable:cri-o:$VERSION.repo dnf makecache dnf install -y kubelet-1.24.0 kubeadm-1.24.0 kubectl-1.24.0 crio sudo setenforce 0 sudo sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config sudo systemctl enable --now kubelet crio kubeadm init --apiserver-advertise-address=10.75.254.1 --pod-network-cidr=10.244.0.0/16 # Take note of the join command kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml kubectl apply -f https://raw.githubusercontent.com/metallb/metallb/v0.13.4/config/manifests/metallb-native.yaml # change address pool below cat <<EOF>metallb-addresspool.yaml apiVersion: metallb.io/v1beta1 kind: IPAddressPool metadata: name: first-pool namespace: metallb-system spec: addresses: - 192.168.1.101-192.168.1.199 --- apiVersion: metallb.io/v1beta1 kind: L2Advertisement metadata: name: example namespace: metallb-system EOF kubectl apply -f metallb-addresspool.yaml