84 lines
2.8 KiB
Bash
84 lines
2.8 KiB
Bash
#!/bin/bash
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#
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# Common setup for all servers (Control Plane and Nodes)
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set -euxo pipefail
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# Variable Declaration
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# DNS Setting
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if [ ! -d /etc/systemd/resolved.conf.d ]; then
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sudo mkdir /etc/systemd/resolved.conf.d/
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fi
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cat <<EOF | sudo tee /etc/systemd/resolved.conf.d/dns_servers.conf
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[Resolve]
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DNS=${DNS_SERVERS}
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EOF
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sudo systemctl restart systemd-resolved
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# disable swap
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sudo swapoff -a
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# keeps the swap off during reboot
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(crontab -l 2>/dev/null; echo "@reboot /sbin/swapoff -a") | crontab - || true
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sudo apt-get update -y
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# Install CRI-O Runtime
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VERSION="$(echo ${KUBERNETES_VERSION} | grep -oE '[0-9]+\.[0-9]+')"
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# Create the .conf file to load the modules at bootup
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cat <<EOF | sudo tee /etc/modules-load.d/crio.conf
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overlay
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br_netfilter
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EOF
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sudo modprobe overlay
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sudo modprobe br_netfilter
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# Set up required sysctl params, these persist across reboots.
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cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
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net.bridge.bridge-nf-call-iptables = 1
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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EOF
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sudo sysctl --system
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cat <<EOF | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
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deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$OS/ /
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EOF
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cat <<EOF | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable:cri-o:$VERSION.list
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deb http://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/$VERSION/$OS/ /
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EOF
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curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/$VERSION/$OS/Release.key | sudo apt-key --keyring /etc/apt/trusted.gpg.d/libcontainers.gpg add -
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curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/$OS/Release.key | sudo apt-key --keyring /etc/apt/trusted.gpg.d/libcontainers.gpg add -
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sudo apt-get update
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sudo apt-get install cri-o cri-o-runc -y
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cat >> /etc/default/crio << EOF
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${ENVIRONMENT}
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EOF
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sudo systemctl daemon-reload
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sudo systemctl enable crio --now
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echo "CRI runtime installed successfully"
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sudo apt-get update
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sudo apt-get install -y apt-transport-https ca-certificates curl
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curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-archive-keyring.gpg
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echo "deb [signed-by=/etc/apt/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list
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sudo apt-get update -y
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sudo apt-get install -y kubelet="$KUBERNETES_VERSION" kubectl="$KUBERNETES_VERSION" kubeadm="$KUBERNETES_VERSION"
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sudo apt-get update -y
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sudo apt-get install -y jq
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local_ip="$(ip --json a s | jq -r '.[] | if .ifname == "eth1" then .addr_info[] | if .family == "inet" then .local else empty end else empty end')"
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cat > /etc/default/kubelet << EOF
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KUBELET_EXTRA_ARGS=--node-ip=$local_ip
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${ENVIRONMENT}
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EOF
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