mirror of https://github.com/k3s-io/k3s
Add install script for get.k3s.io
Darren Shepherd
parent
90357b4d74
commit
263722ccf2
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@ -0,0 +1,159 @@
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#!/bin/sh
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set -e
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VERSION=v0.1.0-rc3
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info()
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{
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echo "[INFO] " "$@"
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}
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fatal()
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{
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echo "[ERROR] " "$@"
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exit 1
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}
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ARCH=`uname -m`
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case $ARCH in
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amd64)
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ARCH=amd64
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SUFFIX=
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;;
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x86_64)
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ARCH=amd64
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SUFFIX=
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;;
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arm64)
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ARCH=arm64
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SUFFIX=-${ARCH}
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;;
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aarch64)
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ARCH=arm64
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SUFFIX=-${ARCH}
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;;
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arm*)
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ARCH=arm
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SUFFIX=-${ARCH}
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;;
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*)
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fatal Unknown architecture $ARCH
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esac
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BINURL=https://github.com/ibuildthecloud/k3s/releases/download/${VERSION}/k3s${SUFFIX}
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HASHURL=https://github.com/ibuildthecloud/k3s/releases/download/${VERSION}/sha256sum-${ARCH}.txt
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if [ -d /run/systemd ]; then
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SYSTEMD=true
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else
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fatal "Can not find systemd or Docker to use as a process supervisor for k3s"
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fi
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SUDO=sudo
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if [ `id -u` = 0 ]; then
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SUDO=
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fi
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if [ "$SYSTEMD" = "true" ]; then
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info Creating uninstall script /usr/local/bin/k3s-uninstall.sh
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TMPUNINSTALL=`mktemp -t k3s-install.XXXXXXXXXX`
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cat > $TMPUNINSTALL << "EOF"
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#!/bin/sh
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set -x
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systemctl stop k3s
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systemctl disable k3s
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systemctl daemon-reload
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rm -f /etc/systemd/system/k3s.service
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rm -f /usr/local/bin/k3s
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if [ -L /usr/local/bin/kubectl ]; then
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rm -f /usr/local/bin/kubectl
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fi
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if [ -L /usr/local/bin/crictl ]; then
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rm -f /usr/local/bin/crictl
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fi
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if [ -e /sys/fs/cgroup/systemd/system.slice/k3s.service/cgroup.procs ]; then
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kill -9 `cat /sys/fs/cgroup/systemd/system.slice/k3s.service/cgroup.procs`
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fi
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umount `cat /proc/self/mounts | awk '{print $2}' | grep '^/run/k3s'`
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umount `cat /proc/self/mounts | awk '{print $2}' | grep '^/var/lib/rancher/k3s'`
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rm -rf /var/lib/rancher/k3s
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rm -f /usr/local/bin/k3s-uninstall.sh
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EOF
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chmod 755 $TMPUNINSTALL
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$SUDO chown root:root $TMPUNINSTALL
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$SUDO mv -f $TMPUNINSTALL /usr/local/bin/k3s-uninstall.sh
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CURL=`which curl`
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WGET=`which wget`
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if [ -n "$CURL" ]; then
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TMPHASH=`mktemp -t k3s-install.XXXXXXXXXX`
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TMPBIN=`mktemp -t k3s-install.XXXXXXXXXX`
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info Downloading $HASHURL
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$CURL -o $TMPHASH -sfL $HASHURL
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info Downloading $BINURL
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$CURL -o $TMPBIN -sfL $BINURL
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fi
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info Verifying download
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EXPECTED=`grep k3s $TMPHASH | awk '{print $1}'`
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ACTUAL=`sha256sum $TMPBIN | awk '{print $1}'`
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rm -f $TMPHASH
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if [ "$EXPECTED" != "$ACTUAL" ]; then
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rm -f $TMPBIN
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fatal "Download sha256 does not match ${EXPECTED} got ${ACTUAL}"
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fi
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chmod 755 $TMPBIN
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info Installing k3s to /usr/local/bin/k3s
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$SUDO chown root:root $TMPBIN
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$SUDO mv -f $TMPBIN /usr/local/bin/k3s
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if [ ! -e /usr/local/bin/kubectl ]; then
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info Creating /usr/local/bin/kubectl symlink to k3s
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$SUDO ln -s k3s /usr/local/bin/kubectl
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fi
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if [ ! -e /usr/local/bin/crictl ]; then
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info Creating /usr/local/bin/crictl symlink to k3s
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$SUDO ln -s k3s /usr/local/bin/crictl
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fi
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info systemd: Creating /etc/systemd/system/k3s.service
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$SUDO tee /etc/systemd/system/k3s.service >/dev/null << "EOF"
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[Unit]
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Description=Lightweight Kubernetes
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Documentation=https://k3s.io
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After=network.target
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[Service]
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ExecStartPre=-/sbin/modprobe br_netfilter
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ExecStartPre=-/sbin/modprobe overlay
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ExecStart=/usr/local/bin/k3s server
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KillMode=process
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Delegate=yes
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LimitNOFILE=infinity
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LimitNPROC=infinity
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LimitCORE=infinity
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TasksMax=infinity
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[Install]
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WantedBy=multi-user.target
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EOF
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info systemd: Enabling k3s unit
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$SUDO systemctl enable k3s.service >/dev/null
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$SUDO systemctl daemon-reload >/dev/null
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info systemd: Starting k3s
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$SUDO systemctl start k3s.service
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else
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fatal "Can not find systemd"
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fi
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