mirror of https://github.com/tailscale/tailscale/
tstest/integration/vms: split up test framework into files (#2396)
My spatial memory functions poorly with large files and the vms_test.go file recently surpassed the point where it functions adequately. This patch splits up vms_test.go into more files to make my spatial memory function like I need it to. Signed-off-by: Christine Dodrill <xe@tailscale.com>pull/2416/head
Christine Dodrill
3 years ago
committed by
GitHub
parent
1f2a877c61
commit
ede8ec1e20
@ -0,0 +1,50 @@
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// Copyright (c) 2021 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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// +build linux
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package vms
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import (
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"io"
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"testing"
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"inet.af/netaddr"
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"tailscale.com/net/interfaces"
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)
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func deriveBindhost(t *testing.T) string {
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t.Helper()
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ifName, err := interfaces.DefaultRouteInterface()
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if err != nil {
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t.Fatal(err)
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}
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var ret string
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err = interfaces.ForeachInterfaceAddress(func(i interfaces.Interface, prefix netaddr.IPPrefix) {
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if ret != "" || i.Name != ifName {
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return
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}
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ret = prefix.IP().String()
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})
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if ret != "" {
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return ret
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}
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if err != nil {
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t.Fatal(err)
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}
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t.Fatal("can't find a bindhost")
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return "unreachable"
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}
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func TestDeriveBindhost(t *testing.T) {
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t.Log(deriveBindhost(t))
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}
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type nopWriteCloser struct {
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io.Writer
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}
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func (nwc nopWriteCloser) Close() error { return nil }
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@ -0,0 +1,95 @@
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// Copyright (c) 2021 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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// +build linux
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package vms
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type Distro struct {
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name string // amazon-linux
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url string // URL to a qcow2 image
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sha256sum string // hex-encoded sha256 sum of contents of URL
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mem int // VM memory in megabytes
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packageManager string // yum/apt/dnf/zypper
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initSystem string // systemd/openrc
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}
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func (d *Distro) InstallPre() string {
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switch d.packageManager {
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case "yum":
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return ` - [ yum, update, gnupg2 ]
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- [ yum, "-y", install, iptables ]`
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case "zypper":
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return ` - [ zypper, in, "-y", iptables ]`
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case "dnf":
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return ` - [ dnf, install, "-y", iptables ]`
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case "apt":
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return ` - [ apt-get, update ]
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- [ apt-get, "-y", install, curl, "apt-transport-https", gnupg2 ]`
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case "apk":
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return ` - [ apk, "-U", add, curl, "ca-certificates", iptables, ip6tables ]
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- [ modprobe, tun ]`
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}
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return ""
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}
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var distros = []Distro{
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// NOTE(Xe): If you run into issues getting the autoconfig to work, run
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// this test with the flag `--distro-regex=alpine-edge`. Connect with a VNC
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// client with a command like this:
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//
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// $ vncviewer :0
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//
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// On NixOS you can get away with something like this:
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//
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// $ env NIXPKGS_ALLOW_UNFREE=1 nix-shell -p tigervnc --run 'vncviewer :0'
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//
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// Login as root with the password root. Then look in
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// /var/log/cloud-init-output.log for what you messed up.
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// NOTE(Xe): These images are not official images created by the Alpine Linux
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// cloud team because the cloud team hasn't created any official images yet.
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// These images were created under the guidance of the cloud team and contain
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// few notable differences from what they would end up shipping. The Alpine
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// Linux cloud team probably won't have official images up until a year or so
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// after this comment is written (2021-06-11), but overall they will be
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// compatible with these images. These images were created using the setup in
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// this repo: https://github.com/Xe/alpine-image. I hereby promise to not break
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// these links.
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{"alpine-3-13-5", "https://xena.greedo.xeserv.us/pkg/alpine/img/alpine-3.13.5-cloud-init-within.qcow2", "a2665c16724e75899723e81d81126bd0254a876e5de286b0b21553734baec287", 256, "apk", "openrc"},
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{"alpine-edge", "https://xena.greedo.xeserv.us/pkg/alpine/img/alpine-edge-2021-05-18-cloud-init-within.qcow2", "b3bb15311c0bd3beffa1b554f022b75d3b7309b5fdf76fb146fe7c72b83b16d0", 256, "apk", "openrc"},
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// NOTE(Xe): All of the following images are official images straight from each
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// distribution's official documentation.
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{"amazon-linux", "https://cdn.amazonlinux.com/os-images/2.0.20210427.0/kvm/amzn2-kvm-2.0.20210427.0-x86_64.xfs.gpt.qcow2", "6ef9daef32cec69b2d0088626ec96410cd24afc504d57278bbf2f2ba2b7e529b", 512, "yum", "systemd"},
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{"arch", "https://mirror.pkgbuild.com/images/v20210515.22945/Arch-Linux-x86_64-cloudimg-20210515.22945.qcow2", "e4077f5ba3c5d545478f64834bc4852f9f7a2e05950fce8ecd0df84193162a27", 512, "pacman", "systemd"},
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{"centos-7", "https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud-2003.qcow2c", "b7555ecf90b24111f2efbc03c1e80f7b38f1e1fc7e1b15d8fee277d1a4575e87", 512, "yum", "systemd"},
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{"centos-8", "https://cloud.centos.org/centos/8/x86_64/images/CentOS-8-GenericCloud-8.3.2011-20201204.2.x86_64.qcow2", "7ec97062618dc0a7ebf211864abf63629da1f325578868579ee70c495bed3ba0", 768, "dnf", "systemd"},
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{"debian-9", "http://cloud.debian.org/images/cloud/OpenStack/9.13.22-20210531/debian-9.13.22-20210531-openstack-amd64.qcow2", "c36e25f2ab0b5be722180db42ed9928476812f02d053620e1c287f983e9f6f1d", 512, "apt", "systemd"},
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{"debian-10", "https://cdimage.debian.org/images/cloud/buster/20210329-591/debian-10-generic-amd64-20210329-591.qcow2", "70c61956095870c4082103d1a7a1cb5925293f8405fc6cb348588ec97e8611b0", 768, "apt", "systemd"},
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{"fedora-34", "https://download.fedoraproject.org/pub/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-34-1.2.x86_64.qcow2", "b9b621b26725ba95442d9a56cbaa054784e0779a9522ec6eafff07c6e6f717ea", 768, "dnf", "systemd"},
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{"opensuse-leap-15-1", "https://download.opensuse.org/repositories/Cloud:/Images:/Leap_15.1/images/openSUSE-Leap-15.1-OpenStack.x86_64.qcow2", "40bc72b8ee143364fc401f2c9c9a11ecb7341a29fa84c6f7bf42fc94acf19a02", 512, "zypper", "systemd"},
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{"opensuse-leap-15-2", "https://download.opensuse.org/repositories/Cloud:/Images:/Leap_15.2/images/openSUSE-Leap-15.2-OpenStack.x86_64.qcow2", "4df9cee9281d1f57d20f79dc65d76e255592b904760e73c0dd44ac753a54330f", 512, "zypper", "systemd"},
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{"opensuse-leap-15-3", "http://mirror.its.dal.ca/opensuse/distribution/leap/15.3/appliances/openSUSE-Leap-15.3-JeOS.x86_64-OpenStack-Cloud.qcow2", "22e0392e4d0becb523d1bc5f709366140b7ee20d6faf26de3d0f9046d1ee15d5", 512, "zypper", "systemd"},
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{"opensuse-tumbleweed", "https://download.opensuse.org/tumbleweed/appliances/openSUSE-Tumbleweed-JeOS.x86_64-OpenStack-Cloud.qcow2", "79e610bba3ed116556608f031c06e4b9260e3be2b193ce1727914ba213afac3f", 512, "zypper", "systemd"},
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{"oracle-linux-7", "https://yum.oracle.com/templates/OracleLinux/OL7/u9/x86_64/OL7U9_x86_64-olvm-b86.qcow2", "2ef4c10c0f6a0b17844742adc9ede7eb64a2c326e374068b7175f2ecbb1956fb", 512, "yum", "systemd"},
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{"oracle-linux-8", "https://yum.oracle.com/templates/OracleLinux/OL8/u4/x86_64/OL8U4_x86_64-olvm-b85.qcow2", "b86e1f1ea8fc904ed763a85ba12e9f12f4291c019c8435d0e4e6133392182b0b", 768, "dnf", "systemd"},
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{"ubuntu-16-04", "https://cloud-images.ubuntu.com/xenial/20210429/xenial-server-cloudimg-amd64-disk1.img", "50a21bc067c05e0c73bf5d8727ab61152340d93073b3dc32eff18b626f7d813b", 512, "apt", "systemd"},
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{"ubuntu-18-04", "https://cloud-images.ubuntu.com/bionic/20210526/bionic-server-cloudimg-amd64.img", "389ffd5d36bbc7a11bf384fd217cda9388ccae20e5b0cb7d4516733623c96022", 512, "apt", "systemd"},
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{"ubuntu-20-04", "https://cloud-images.ubuntu.com/focal/20210603/focal-server-cloudimg-amd64.img", "1c0969323b058ba8b91fec245527069c2f0502fc119b9138b213b6bfebd965cb", 512, "apt", "systemd"},
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{"ubuntu-20-10", "https://cloud-images.ubuntu.com/groovy/20210604/groovy-server-cloudimg-amd64.img", "2196df5f153faf96443e5502bfdbcaa0baaefbaec614348fec344a241855b0ef", 512, "apt", "systemd"},
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{"ubuntu-21-04", "https://cloud-images.ubuntu.com/hirsute/20210603/hirsute-server-cloudimg-amd64.img", "bf07f36fc99ff521d3426e7d257e28f0c81feebc9780b0c4f4e25ae594ff4d3b", 512, "apt", "systemd"},
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// NOTE(Xe): We build fresh NixOS images for every test run, so the URL being
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// used here is actually the URL of the NixOS channel being built from and the
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// shasum is meaningless. This `channel:name` syntax is documented at [1].
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//
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// [1]: https://nixos.org/manual/nix/unstable/command-ref/env-common.html
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{"nixos-21-05", "channel:nixos-21.05", "lolfakesha", 512, "nix", "systemd"},
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{"nixos-unstable", "channel:nixos-unstable", "lolfakesha", 512, "nix", "systemd"},
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}
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@ -0,0 +1,125 @@
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// Copyright (c) 2021 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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// +build linux
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package vms
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import (
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"bytes"
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"context"
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"fmt"
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"net"
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"os"
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"os/exec"
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"path/filepath"
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"testing"
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"time"
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"github.com/gliderlabs/ssh"
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"golang.org/x/net/proxy"
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"inet.af/netaddr"
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"tailscale.com/tstest/integration"
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"tailscale.com/tstest/integration/testcontrol"
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)
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type Harness struct {
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testerDialer proxy.Dialer
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testerDir string
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bins *integration.Binaries
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signer ssh.Signer
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cs *testcontrol.Server
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loginServerURL string
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testerV4 netaddr.IP
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}
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func (h *Harness) Tailscale(t *testing.T, args ...string) []byte {
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t.Helper()
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args = append([]string{"--socket=" + filepath.Join(h.testerDir, "sock")}, args...)
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cmd := exec.Command(h.bins.CLI, args...)
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out, err := cmd.CombinedOutput()
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if err != nil {
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t.Fatal(err)
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}
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return out
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}
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// makeTestNode creates a userspace tailscaled running in netstack mode that
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// enables us to make connections to and from the tailscale network being
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// tested. This mutates the Harness to allow tests to dial into the tailscale
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// network as well as control the tester's tailscaled.
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func (h *Harness) makeTestNode(t *testing.T, bins *integration.Binaries, controlURL string) {
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dir := t.TempDir()
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h.testerDir = dir
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port, err := getProbablyFreePortNumber()
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if err != nil {
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t.Fatalf("can't get free port: %v", err)
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}
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cmd := exec.Command(
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bins.Daemon,
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"--tun=userspace-networking",
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"--state="+filepath.Join(dir, "state.json"),
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"--socket="+filepath.Join(dir, "sock"),
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fmt.Sprintf("--socks5-server=localhost:%d", port),
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)
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cmd.Env = append(
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os.Environ(),
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"NOTIFY_SOCKET="+filepath.Join(dir, "notify_socket"),
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"TS_LOG_TARGET="+h.loginServerURL,
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)
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err = cmd.Start()
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if err != nil {
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t.Fatalf("can't start tailscaled: %v", err)
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}
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t.Cleanup(func() {
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cmd.Process.Kill()
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})
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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ticker := time.NewTicker(100 * time.Millisecond)
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outer:
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for {
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select {
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case <-ctx.Done():
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t.Fatal("timed out waiting for tailscaled to come up")
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return
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case <-ticker.C:
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conn, err := net.Dial("unix", filepath.Join(dir, "sock"))
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if err != nil {
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continue
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}
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conn.Close()
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break outer
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}
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}
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run(t, dir, bins.CLI,
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"--socket="+filepath.Join(dir, "sock"),
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"up",
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"--login-server="+controlURL,
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"--hostname=tester",
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)
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dialer, err := proxy.SOCKS5("tcp", net.JoinHostPort("127.0.0.1", fmt.Sprint(port)), nil, &net.Dialer{})
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if err != nil {
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t.Fatalf("can't make netstack proxy dialer: %v", err)
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}
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h.testerDialer = dialer
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h.testerV4 = bytes2Netaddr(h.Tailscale(t, "ip", "-4"))
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}
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func bytes2Netaddr(inp []byte) netaddr.IP {
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return netaddr.MustParseIP(string(bytes.TrimSpace(inp)))
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}
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@ -0,0 +1,382 @@
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// Copyright (c) 2021 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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// +build linux
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package vms
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import (
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"fmt"
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"io"
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"net"
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"net/http"
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"os"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"syscall"
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"testing"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/session"
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"github.com/aws/aws-sdk-go/service/s3"
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"github.com/aws/aws-sdk-go/service/s3/s3manager"
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"github.com/pkg/sftp"
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"golang.org/x/crypto/ssh"
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"tailscale.com/types/logger"
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)
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// mkVM makes a KVM-accelerated virtual machine and prepares it for introduction
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// to the testcontrol server. The function it returns is for killing the virtual
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// machine when it is time for it to die.
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func (h Harness) mkVM(t *testing.T, n int, d Distro, sshKey, hostURL, tdir string) {
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t.Helper()
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cdir, err := os.UserCacheDir()
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if err != nil {
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t.Fatalf("can't find cache dir: %v", err)
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}
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cdir = filepath.Join(cdir, "tailscale", "vm-test")
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os.MkdirAll(filepath.Join(cdir, "qcow2"), 0755)
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port, err := getProbablyFreePortNumber()
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if err != nil {
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t.Fatal(err)
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}
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mkLayeredQcow(t, tdir, d, h.fetchDistro(t, d))
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mkSeed(t, d, sshKey, hostURL, tdir, port)
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driveArg := fmt.Sprintf("file=%s,if=virtio", filepath.Join(tdir, d.name+".qcow2"))
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args := []string{
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"-machine", "pc-q35-5.1,accel=kvm,usb=off,vmport=off,dump-guest-core=off",
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"-netdev", fmt.Sprintf("user,hostfwd=::%d-:22,id=net0", port),
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"-device", "virtio-net-pci,netdev=net0,id=net0,mac=8a:28:5c:30:1f:25",
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"-m", fmt.Sprint(d.mem),
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"-boot", "c",
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"-drive", driveArg,
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"-cdrom", filepath.Join(tdir, d.name, "seed", "seed.iso"),
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"-smbios", "type=1,serial=ds=nocloud;h=" + d.name,
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}
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if *useVNC {
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// test listening on VNC port
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ln, err := net.Listen("tcp", net.JoinHostPort("0.0.0.0", strconv.Itoa(5900+n)))
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if err != nil {
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t.Fatalf("would not be able to listen on the VNC port for the VM: %v", err)
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}
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ln.Close()
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args = append(args, "-vnc", fmt.Sprintf(":%d", n))
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} else {
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args = append(args, "-display", "none")
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}
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t.Logf("running: qemu-system-x86_64 %s", strings.Join(args, " "))
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cmd := exec.Command("qemu-system-x86_64", args...)
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cmd.Stdout = logger.FuncWriter(t.Logf)
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cmd.Stderr = logger.FuncWriter(t.Logf)
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err = cmd.Start()
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if err != nil {
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t.Fatal(err)
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}
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time.Sleep(time.Second)
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|
||||
// NOTE(Xe): In Unix if you do a kill with signal number 0, the kernel will do
|
||||
// all of the access checking for the process (existence, permissions, etc) but
|
||||
// nothing else. This is a way to ensure that qemu's process is active.
|
||||
if err := cmd.Process.Signal(syscall.Signal(0)); err != nil {
|
||||
t.Fatalf("qemu is not running: %v", err)
|
||||
}
|
||||
|
||||
t.Cleanup(func() {
|
||||
err := cmd.Process.Kill()
|
||||
if err != nil {
|
||||
t.Errorf("can't kill %s (%d): %v", d.name, cmd.Process.Pid, err)
|
||||
}
|
||||
|
||||
cmd.Wait()
|
||||
})
|
||||
}
|
||||
|
||||
// fetchFromS3 fetches a distribution image from Amazon S3 or reports whether
|
||||
// it is unable to. It can fail to fetch from S3 if there is either no AWS
|
||||
// configuration (in ~/.aws/credentials) or if the `-no-s3` flag is passed. In
|
||||
// that case the test will fall back to downloading distribution images from the
|
||||
// public internet.
|
||||
//
|
||||
// Like fetching from HTTP, the test will fail if an error is encountered during
|
||||
// the downloading process.
|
||||
//
|
||||
// This function writes the distribution image to fout. It is always closed. Do
|
||||
// not expect fout to remain writable.
|
||||
func fetchFromS3(t *testing.T, fout *os.File, d Distro) bool {
|
||||
t.Helper()
|
||||
|
||||
if *noS3 {
|
||||
t.Log("you asked to not use S3, not using S3")
|
||||
return false
|
||||
}
|
||||
|
||||
sess, err := session.NewSession(&aws.Config{
|
||||
Region: aws.String("us-east-1"),
|
||||
})
|
||||
if err != nil {
|
||||
t.Logf("can't make AWS session: %v", err)
|
||||
return false
|
||||
}
|
||||
|
||||
dler := s3manager.NewDownloader(sess, func(d *s3manager.Downloader) {
|
||||
d.PartSize = 64 * 1024 * 1024 // 64MB per part
|
||||
})
|
||||
|
||||
t.Logf("fetching s3://%s/%s", bucketName, d.sha256sum)
|
||||
|
||||
_, err = dler.Download(fout, &s3.GetObjectInput{
|
||||
Bucket: aws.String(bucketName),
|
||||
Key: aws.String(d.sha256sum),
|
||||
})
|
||||
if err != nil {
|
||||
fout.Close()
|
||||
t.Fatalf("can't get s3://%s/%s: %v", bucketName, d.sha256sum, err)
|
||||
}
|
||||
|
||||
err = fout.Close()
|
||||
if err != nil {
|
||||
t.Fatalf("can't close fout: %v", err)
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// fetchDistro fetches a distribution from the internet if it doesn't already exist locally. It
|
||||
// also validates the sha256 sum from a known good hash.
|
||||
func (h Harness) fetchDistro(t *testing.T, resultDistro Distro) string {
|
||||
t.Helper()
|
||||
|
||||
cdir, err := os.UserCacheDir()
|
||||
if err != nil {
|
||||
t.Fatalf("can't find cache dir: %v", err)
|
||||
}
|
||||
cdir = filepath.Join(cdir, "tailscale", "vm-test")
|
||||
|
||||
if strings.HasPrefix(resultDistro.name, "nixos") {
|
||||
return h.makeNixOSImage(t, resultDistro, cdir)
|
||||
}
|
||||
|
||||
qcowPath := filepath.Join(cdir, "qcow2", resultDistro.sha256sum)
|
||||
|
||||
_, err = os.Stat(qcowPath)
|
||||
if err == nil {
|
||||
hash := checkCachedImageHash(t, resultDistro, cdir)
|
||||
if hash != resultDistro.sha256sum {
|
||||
t.Logf("hash for %s (%s) doesn't match expected %s, re-downloading", resultDistro.name, qcowPath, resultDistro.sha256sum)
|
||||
err = errors.New("some fake non-nil error to force a redownload")
|
||||
|
||||
if err := os.Remove(qcowPath); err != nil {
|
||||
t.Fatalf("can't delete wrong cached image: %v", err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if err != nil {
|
||||
t.Logf("downloading distro image %s to %s", resultDistro.url, qcowPath)
|
||||
fout, err := os.Create(qcowPath)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
if !fetchFromS3(t, fout, resultDistro) {
|
||||
resp, err := http.Get(resultDistro.url)
|
||||
if err != nil {
|
||||
t.Fatalf("can't fetch qcow2 for %s (%s): %v", resultDistro.name, resultDistro.url, err)
|
||||
}
|
||||
|
||||
if resp.StatusCode != http.StatusOK {
|
||||
resp.Body.Close()
|
||||
t.Fatalf("%s replied %s", resultDistro.url, resp.Status)
|
||||
}
|
||||
|
||||
_, err = io.Copy(fout, resp.Body)
|
||||
if err != nil {
|
||||
t.Fatalf("download of %s failed: %v", resultDistro.url, err)
|
||||
}
|
||||
|
||||
resp.Body.Close()
|
||||
err = fout.Close()
|
||||
if err != nil {
|
||||
t.Fatalf("can't close fout: %v", err)
|
||||
}
|
||||
|
||||
hash := checkCachedImageHash(t, resultDistro, cdir)
|
||||
|
||||
if hash != resultDistro.sha256sum {
|
||||
t.Fatalf("hash mismatch, want: %s, got: %s", resultDistro.sha256sum, hash)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return qcowPath
|
||||
}
|
||||
|
||||
func checkCachedImageHash(t *testing.T, d Distro, cacheDir string) (gotHash string) {
|
||||
t.Helper()
|
||||
|
||||
qcowPath := filepath.Join(cacheDir, "qcow2", d.sha256sum)
|
||||
|
||||
fin, err := os.Open(qcowPath)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
hasher := sha256.New()
|
||||
if _, err := io.Copy(hasher, fin); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
hash := hex.EncodeToString(hasher.Sum(nil))
|
||||
|
||||
if hash != d.sha256sum {
|
||||
t.Fatalf("hash mismatch, got: %q, want: %q", hash, d.sha256sum)
|
||||
}
|
||||
|
||||
gotHash = hash
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (h Harness) copyBinaries(t *testing.T, d Distro, conn *ssh.Client) {
|
||||
bins := h.bins
|
||||
if strings.HasPrefix(d.name, "nixos") {
|
||||
return
|
||||
}
|
||||
|
||||
cli, err := sftp.NewClient(conn)
|
||||
if err != nil {
|
||||
t.Fatalf("can't connect over sftp to copy binaries: %v", err)
|
||||
}
|
||||
|
||||
mkdir(t, cli, "/usr/bin")
|
||||
mkdir(t, cli, "/usr/sbin")
|
||||
mkdir(t, cli, "/etc/default")
|
||||
mkdir(t, cli, "/var/lib/tailscale")
|
||||
|
||||
copyFile(t, cli, bins.Daemon, "/usr/sbin/tailscaled")
|
||||
copyFile(t, cli, bins.CLI, "/usr/bin/tailscale")
|
||||
|
||||
// TODO(Xe): revisit this assumption before it breaks the test.
|
||||
copyFile(t, cli, "../../../cmd/tailscaled/tailscaled.defaults", "/etc/default/tailscaled")
|
||||
|
||||
switch d.initSystem {
|
||||
case "openrc":
|
||||
mkdir(t, cli, "/etc/init.d")
|
||||
copyFile(t, cli, "../../../cmd/tailscaled/tailscaled.openrc", "/etc/init.d/tailscaled")
|
||||
case "systemd":
|
||||
mkdir(t, cli, "/etc/systemd/system")
|
||||
copyFile(t, cli, "../../../cmd/tailscaled/tailscaled.service", "/etc/systemd/system/tailscaled.service")
|
||||
}
|
||||
|
||||
fout, err := cli.OpenFile("/etc/default/tailscaled", os.O_WRONLY|os.O_APPEND)
|
||||
if err != nil {
|
||||
t.Fatalf("can't append to defaults for tailscaled: %v", err)
|
||||
}
|
||||
fmt.Fprintf(fout, "\n\nTS_LOG_TARGET=%s\n", h.loginServerURL)
|
||||
fout.Close()
|
||||
|
||||
t.Log("tailscale installed!")
|
||||
}
|
||||
|
||||
func mkdir(t *testing.T, cli *sftp.Client, name string) {
|
||||
t.Helper()
|
||||
|
||||
err := cli.MkdirAll(name)
|
||||
if err != nil {
|
||||
t.Fatalf("can't make %s: %v", name, err)
|
||||
}
|
||||
}
|
||||
|
||||
func copyFile(t *testing.T, cli *sftp.Client, localSrc, remoteDest string) {
|
||||
t.Helper()
|
||||
|
||||
fin, err := os.Open(localSrc)
|
||||
if err != nil {
|
||||
t.Fatalf("can't open: %v", err)
|
||||
}
|
||||
defer fin.Close()
|
||||
|
||||
fi, err := fin.Stat()
|
||||
if err != nil {
|
||||
t.Fatalf("can't stat: %v", err)
|
||||
}
|
||||
|
||||
fout, err := cli.Create(remoteDest)
|
||||
if err != nil {
|
||||
t.Fatalf("can't create output file: %v", err)
|
||||
}
|
||||
|
||||
err = fout.Chmod(fi.Mode())
|
||||
if err != nil {
|
||||
fout.Close()
|
||||
t.Fatalf("can't chmod fout: %v", err)
|
||||
}
|
||||
|
||||
n, err := io.Copy(fout, fin)
|
||||
if err != nil {
|
||||
fout.Close()
|
||||
t.Fatalf("copy failed: %v", err)
|
||||
}
|
||||
|
||||
if fi.Size() != n {
|
||||
t.Fatalf("incorrect number of bytes copied: wanted: %d, got: %d", fi.Size(), n)
|
||||
}
|
||||
|
||||
err = fout.Close()
|
||||
if err != nil {
|
||||
t.Fatalf("can't close fout on remote host: %v", err)
|
||||
}
|
||||
}
|
||||
|
||||
const metaDataTemplate = `instance-id: {{.ID}}
|
||||
local-hostname: {{.Hostname}}`
|
||||
|
||||
const userDataTemplate = `#cloud-config
|
||||
#vim:syntax=yaml
|
||||
|
||||
cloud_config_modules:
|
||||
- runcmd
|
||||
|
||||
cloud_final_modules:
|
||||
- [users-groups, always]
|
||||
- [scripts-user, once-per-instance]
|
||||
|
||||
users:
|
||||
- name: root
|
||||
ssh-authorized-keys:
|
||||
- {{.SSHKey}}
|
||||
- name: ts
|
||||
plain_text_passwd: {{.Password}}
|
||||
groups: [ wheel ]
|
||||
sudo: [ "ALL=(ALL) NOPASSWD:ALL" ]
|
||||
shell: /bin/sh
|
||||
ssh-authorized-keys:
|
||||
- {{.SSHKey}}
|
||||
|
||||
write_files:
|
||||
- path: /etc/cloud/cloud.cfg.d/80_disable_network_after_firstboot.cfg
|
||||
content: |
|
||||
# Disable network configuration after first boot
|
||||
network:
|
||||
config: disabled
|
||||
|
||||
runcmd:
|
||||
{{.InstallPre}}
|
||||
- [ curl, "{{.HostURL}}/myip/{{.Port}}", "-H", "User-Agent: {{.Hostname}}" ]
|
||||
`
|
||||
@ -0,0 +1,134 @@
|
||||
// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// +build linux
|
||||
|
||||
package vms
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"context"
|
||||
"fmt"
|
||||
"net"
|
||||
"net/http"
|
||||
"strings"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"golang.org/x/crypto/ssh"
|
||||
"inet.af/netaddr"
|
||||
)
|
||||
|
||||
const timeout = 15 * time.Second
|
||||
|
||||
func retry(t *testing.T, fn func() error) {
|
||||
t.Helper()
|
||||
const tries = 3
|
||||
var err error
|
||||
for i := 0; i < tries; i++ {
|
||||
err = fn()
|
||||
if err != nil {
|
||||
t.Logf("%dth invocation failed, trying again: %v", i, err)
|
||||
time.Sleep(50 * time.Millisecond)
|
||||
}
|
||||
if err == nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Fatalf("tried %d times, got: %v", tries, err)
|
||||
}
|
||||
|
||||
func (h Harness) testPing(t *testing.T, ipAddr netaddr.IP, cli *ssh.Client) {
|
||||
var outp []byte
|
||||
var err error
|
||||
retry(t, func() error {
|
||||
sess := getSession(t, cli)
|
||||
|
||||
outp, err = sess.CombinedOutput(fmt.Sprintf("tailscale ping -c 1 %s", ipAddr))
|
||||
return err
|
||||
})
|
||||
|
||||
if !bytes.Contains(outp, []byte("pong")) {
|
||||
t.Log(string(outp))
|
||||
t.Fatal("no pong")
|
||||
}
|
||||
|
||||
retry(t, func() error {
|
||||
sess := getSession(t, cli)
|
||||
|
||||
// NOTE(Xe): the ping command is inconsistent across distros. Joy.
|
||||
pingCmd := fmt.Sprintf("sh -c 'ping -c 1 %[1]s || ping -6 -c 1 %[1]s || ping6 -c 1 %[1]s\n'", ipAddr)
|
||||
t.Logf("running %q", pingCmd)
|
||||
outp, err = sess.CombinedOutput(pingCmd)
|
||||
return err
|
||||
})
|
||||
|
||||
if !bytes.Contains(outp, []byte("bytes")) {
|
||||
t.Log(string(outp))
|
||||
t.Fatalf("wanted output to contain %q, it did not", "bytes")
|
||||
}
|
||||
}
|
||||
|
||||
func getSession(t *testing.T, cli *ssh.Client) *ssh.Session {
|
||||
sess, err := cli.NewSession()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
t.Cleanup(func() {
|
||||
sess.Close()
|
||||
})
|
||||
|
||||
return sess
|
||||
}
|
||||
|
||||
func (h Harness) testOutgoingTCP(t *testing.T, ipAddr netaddr.IP, cli *ssh.Client) {
|
||||
const sendmsg = "this is a message that curl won't print"
|
||||
ctx, cancel := context.WithCancel(context.Background())
|
||||
s := &http.Server{
|
||||
Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
t.Logf("http connection from %s", r.RemoteAddr)
|
||||
cancel()
|
||||
fmt.Fprintln(w, sendmsg)
|
||||
}),
|
||||
}
|
||||
ln, err := net.Listen("tcp", net.JoinHostPort("::", "0"))
|
||||
if err != nil {
|
||||
t.Fatalf("can't make HTTP server: %v", err)
|
||||
}
|
||||
_, port, _ := net.SplitHostPort(ln.Addr().String())
|
||||
go s.Serve(ln)
|
||||
|
||||
// sess := getSession(t, cli)
|
||||
// sess.Stderr = logger.FuncWriter(t.Logf)
|
||||
// sess.Stdout = logger.FuncWriter(t.Logf)
|
||||
// sess.Run("ip route show table all")
|
||||
|
||||
// sess = getSession(t, cli)
|
||||
// sess.Stderr = logger.FuncWriter(t.Logf)
|
||||
// sess.Stdout = logger.FuncWriter(t.Logf)
|
||||
// sess.Run("sysctl -a")
|
||||
|
||||
var outp []byte
|
||||
retry(t, func() error {
|
||||
var err error
|
||||
sess := getSession(t, cli)
|
||||
v6Arg := ""
|
||||
if ipAddr.Is6() {
|
||||
v6Arg = "-6 -g"
|
||||
}
|
||||
cmd := fmt.Sprintf("curl -v %s -s -f http://%s\n", v6Arg, net.JoinHostPort(ipAddr.String(), port))
|
||||
t.Logf("running: %s", cmd)
|
||||
outp, err = sess.CombinedOutput(cmd)
|
||||
if err != nil {
|
||||
t.Log(string(outp))
|
||||
}
|
||||
return err
|
||||
})
|
||||
|
||||
if msg := string(bytes.TrimSpace(outp)); !strings.Contains(msg, sendmsg) {
|
||||
t.Fatalf("wanted %q, got: %q", sendmsg, msg)
|
||||
}
|
||||
<-ctx.Done()
|
||||
}
|
||||
Loading…
Reference in New Issue