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060ecb010f
It was previously using jobcontrol to achieve this, but that apparently doesn't work when there is no tty. This makes it so that it directly handles SIGINT and SIGTERM and passes it on to tailscaled. I tested this works on a Digital Ocean K8s cluster. Fixes #5512 Signed-off-by: Maisem Ali <maisem@tailscale.com>
92 lines
2.6 KiB
Bash
Executable File
92 lines
2.6 KiB
Bash
Executable File
# Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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#! /bin/sh
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export PATH=$PATH:/tailscale/bin
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TS_AUTH_KEY="${TS_AUTH_KEY:-}"
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TS_ROUTES="${TS_ROUTES:-}"
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TS_DEST_IP="${TS_DEST_IP:-}"
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TS_EXTRA_ARGS="${TS_EXTRA_ARGS:-}"
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TS_USERSPACE="${TS_USERSPACE:-true}"
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TS_STATE_DIR="${TS_STATE_DIR:-}"
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TS_ACCEPT_DNS="${TS_ACCEPT_DNS:-false}"
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TS_KUBE_SECRET="${TS_KUBE_SECRET:-tailscale}"
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TS_SOCKS5_SERVER="${TS_SOCKS5_SERVER:-}"
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TS_OUTBOUND_HTTP_PROXY_LISTEN="${TS_OUTBOUND_HTTP_PROXY_LISTEN:-}"
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TS_TAILSCALED_EXTRA_ARGS="${TS_TAILSCALED_EXTRA_ARGS:-}"
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set -e
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TAILSCALED_ARGS="--socket=/tmp/tailscaled.sock"
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if [[ ! -z "${KUBERNETES_SERVICE_HOST}" ]]; then
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --state=kube:${TS_KUBE_SECRET} --statedir=${TS_STATE_DIR:-/tmp}"
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elif [[ ! -z "${TS_STATE_DIR}" ]]; then
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --statedir=${TS_STATE_DIR}"
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else
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --state=mem: --statedir=/tmp"
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fi
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if [[ "${TS_USERSPACE}" == "true" ]]; then
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if [[ ! -z "${TS_DEST_IP}" ]]; then
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echo "IP forwarding is not supported in userspace mode"
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exit 1
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fi
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --tun=userspace-networking"
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else
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if [[ ! -d /dev/net ]]; then
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mkdir -p /dev/net
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fi
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if [[ ! -c /dev/net/tun ]]; then
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mknod /dev/net/tun c 10 200
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fi
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fi
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if [[ ! -z "${TS_SOCKS5_SERVER}" ]]; then
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --socks5-server ${TS_SOCKS5_SERVER}"
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fi
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if [[ ! -z "${TS_OUTBOUND_HTTP_PROXY_LISTEN}" ]]; then
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TAILSCALED_ARGS="${TAILSCALED_ARGS} --outbound-http-proxy-listen ${TS_OUTBOUND_HTTP_PROXY_LISTEN}"
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fi
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if [[ ! -z "${TS_TAILSCALED_EXTRA_ARGS}" ]]; then
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TAILSCALED_ARGS="${TAILSCALED_ARGS} ${TS_TAILSCALED_EXTRA_ARGS}"
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fi
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handler() {
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echo "Caught SIGINT/SIGTERM, shutting down tailscaled"
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kill -s SIGINT $PID
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wait ${PID}
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}
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echo "Starting tailscaled"
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tailscaled ${TAILSCALED_ARGS} &
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PID=$!
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trap handler SIGINT SIGTERM
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UP_ARGS="--accept-dns=${TS_ACCEPT_DNS}"
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if [[ ! -z "${TS_ROUTES}" ]]; then
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UP_ARGS="--advertise-routes=${TS_ROUTES} ${UP_ARGS}"
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fi
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if [[ ! -z "${TS_AUTH_KEY}" ]]; then
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UP_ARGS="--authkey=${TS_AUTH_KEY} ${UP_ARGS}"
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fi
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if [[ ! -z "${TS_EXTRA_ARGS}" ]]; then
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UP_ARGS="${UP_ARGS} ${TS_EXTRA_ARGS:-}"
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fi
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echo "Running tailscale up"
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tailscale --socket=/tmp/tailscaled.sock up ${UP_ARGS}
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if [[ ! -z "${TS_DEST_IP}" ]]; then
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echo "Adding iptables rule for DNAT"
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iptables -t nat -I PREROUTING -d "$(tailscale --socket=/tmp/tailscaled.sock ip -4)" -j DNAT --to-destination "${TS_DEST_IP}"
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fi
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echo "Waiting for tailscaled to exit"
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wait ${PID} |