84 lines
3.0 KiB
Bash
Executable File
84 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# script that runs
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# https://kubernetes.io/docs/setup/production-environment/container-runtime
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# changes March 14 2023: introduced $PLATFORM to have this work on amd64 as well as arm64
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# setting MYOS variable
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MYOS=$(hostnamectl | awk '/Operating/ { print $3 }')
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OSVERSION=$(hostnamectl | awk '/Operating/ { print $4 }')
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# beta: building in ARM support
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[ $(arch) = aarch64 ] && PLATFORM=arm64
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[ $(arch) = x86_64 ] && PLATFORM=amd64
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sudo apt install -y jq
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if [ $MYOS = "Ubuntu" ]
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then
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### setting up container runtime prereq
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cat <<- EOF | sudo tee /etc/modules-load.d/containerd.conf
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overlay
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br_netfilter
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EOF
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sudo modprobe overlay
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sudo modprobe br_netfilter
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# Setup required sysctl params, these persist across reboots.
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cat <<- EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
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net.bridge.bridge-nf-call-iptables = 1
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net.ipv4.ip_forward = 1
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net.bridge.bridge-nf-call-ip6tables = 1
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EOF
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# Apply sysctl params without reboot
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sudo sysctl --system
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# (Install containerd)
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# getting rid of hard coded version numbers
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CONTAINERD_VERSION=$(curl -s https://api.github.com/repos/containerd/containerd/releases/latest | jq -r '.tag_name')
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CONTAINERD_VERSION=${CONTAINERD_VERSION#v}
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wget https://github.com/containerd/containerd/releases/download/v${CONTAINERD_VERSION}/containerd-${CONTAINERD_VERSION}-linux-${PLATFORM}.tar.gz
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sudo tar xvf containerd-${CONTAINERD_VERSION}-linux-${PLATFORM}.tar.gz -C /usr/local
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# Configure containerd
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sudo mkdir -p /etc/containerd
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cat <<- TOML | sudo tee /etc/containerd/config.toml
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version = 2
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[plugins]
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[plugins."io.containerd.grpc.v1.cri"]
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[plugins."io.containerd.grpc.v1.cri".containerd]
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discard_unpacked_layers = true
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes]
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
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runtime_type = "io.containerd.runc.v2"
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[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
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SystemdCgroup = true
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TOML
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RUNC_VERSION=$(curl -s https://api.github.com/repos/opencontainers/runc/releases/latest | jq -r '.tag_name')
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wget https://github.com/opencontainers/runc/releases/download/${RUNC_VERSION}/runc.${PLATFORM}
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sudo install -m 755 runc.${PLATFORM} /usr/local/sbin/runc
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# Restart containerd
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wget https://raw.githubusercontent.com/containerd/containerd/main/containerd.service
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sudo mv containerd.service /usr/lib/systemd/system/
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sudo systemctl daemon-reload
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sudo systemctl enable --now containerd
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fi
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exit
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#### notes from history just in case
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#!/bin/bash
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# Fetch the latest release tag from GitHub API
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LATEST_TAG=$(curl -s https://api.github.com/repos/opencontainers/runc/releases/latest | jq -r '.tag_name')
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# Construct the download URL
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DOWNLOAD_URL="https://github.com/opencontainers/runc/releases/download/${LATEST_TAG}/runc.amd64"
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# Use wget to download the latest version
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wget "$DOWNLOAD_URL"
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echo "Downloaded $DOWNLOAD_URL"
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