install.sh.tmpl

set -euox pipefail

BUNDLE_DOWNLOAD_PATH={{.BundleDownloadPath}}
BUNDLE_ADDR={{.BundleAddrs}}
IMGPKG_VERSION={{.ImgpkgVersion}}
ARCH={{.Arch}}
BUNDLE_PATH=$BUNDLE_DOWNLOAD_PATH/$BUNDLE_ADDR

if ! command -v imgpkg >>/dev/null; then
    echo "installing imgpkg"	
    
    if command -v wget >>/dev/null; then
        dl_bin="wget -nv -O-"
    elif command -v curl >>/dev/null; then
        dl_bin="curl -s -L"
    else
        echo "installing curl"
        apt-get install -y curl
        dl_bin="curl -s -L"
    fi
    
    $dl_bin github.com/vmware-tanzu/carvel-imgpkg/releases/download/$IMGPKG_VERSION/imgpkg-linux-$ARCH > /tmp/imgpkg
    mv /tmp/imgpkg /usr/local/bin/imgpkg
    chmod +x /usr/local/bin/imgpkg
fi

echo "downloading bundle"
mkdir -p $BUNDLE_PATH
imgpkg pull -i $BUNDLE_ADDR -o $BUNDLE_PATH

## disable swap
swapoff -a && sed -ri '/\sswap\s/s/^#?/#/' /etc/fstab

## disable firewall, save current state so uninstall can restore it
if command -v ufw >>/dev/null; then
    mkdir -p /var/lib/byoh
    if [ ! -f /var/lib/byoh/ufw-state ]; then
        ufw status | grep -q "Status: active" && echo "active" > /var/lib/byoh/ufw-state || echo "inactive" > /var/lib/byoh/ufw-state
    fi
    ufw disable
fi

## load kernal modules
modprobe overlay && modprobe br_netfilter

## adding os configuration
tar -C / -xvf "$BUNDLE_PATH/conf.tar" && sysctl --system

## installing kubeadm, kubelet, kubectl binaries
install -m 0755 "$BUNDLE_PATH/kubeadm" /usr/bin/kubeadm
install -m 0755 "$BUNDLE_PATH/kubelet" /usr/bin/kubelet
install -m 0755 "$BUNDLE_PATH/kubectl" /usr/bin/kubectl

## installing crictl
tar -C /usr/local/bin -xvf "$BUNDLE_PATH/crictl.tar.gz"

## installing CNI plugins
mkdir -p /opt/cni/bin
tar -C /opt/cni/bin -xvf "$BUNDLE_PATH/cni-plugins.tgz"

## installing runc
install -m 0755 "$BUNDLE_PATH/runc" /usr/local/sbin/runc

## intalling containerd
tar -C /usr/local -xvf "$BUNDLE_PATH/containerd.tar.gz"
mkdir -p /etc/containerd
containerd config default > /etc/containerd/config.toml
{{.ContainerdConfig}}

# remove cri as a disabled plugins from containerd config
sed -i 's/^disabled_plugins = \["cri"\]/disabled_plugins = \[\]/' /etc/containerd/config.toml

## starting containerd service
systemctl daemon-reload && systemctl enable containerd && systemctl restart containerd

echo "Installation complete!"