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#!/usr/bin/env bash
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echo -e "\e[1;33m This script will add Tailscale to an existing LXC Container ONLY\e[0m"
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while true; do
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read -p "Did you replace 106 with your LXC ID? Proceed(y/n)?" yn
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case $yn in
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[Yy]* ) break;;
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[Nn]* ) exit;;
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* ) echo "Please answer yes or no.";;
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esac
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done
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set -o errexit
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set -o errtrace
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set -o nounset
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set -o pipefail
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shopt -s expand_aliases
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alias die='EXIT=$? LINE=$LINENO error_exit'
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trap die ERR
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trap cleanup EXIT
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function error_exit() {
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trap - ERR
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local DEFAULT='Unknown failure occured.'
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local REASON="\e[97m${1:-$DEFAULT}\e[39m"
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local FLAG="\e[91m[ERROR] \e[93m$EXIT@$LINE"
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msg "$FLAG $REASON"
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exit $EXIT
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}
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function msg() {
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local TEXT="$1"
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echo -e "$TEXT"
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}
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function cleanup() {
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popd >/dev/null
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rm -rf $TEMP_DIR
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}
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TEMP_DIR=$(mktemp -d)
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pushd $TEMP_DIR >/dev/null
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CTID=$1
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CTID_CONFIG_PATH=/etc/pve/lxc/${CTID}.conf
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cat <<EOF >> $CTID_CONFIG_PATH
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lxc.cgroup2.devices.allow: c 10:200 rwm
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lxc.mount.entry: /dev/net/tun dev/net/tun none bind,create=file
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EOF
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msg "⏳ Installing Tailscale..."
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lxc-attach -n $CTID -- bash -c "$(curl -fsSL https://tailscale.com/install.sh)" &>/dev/null || exit
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msg "⌛ Installed Tailscale"
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sleep 2
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msg "\e[1;32m ✔ Completed Successfully!\e[0m"
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msg "Reboot ${CTID} LXC to apply the changes, then run tailscale up in the LXC console"
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