tailscale

Commit Graph

Author	SHA1	Message	Date
Christine Dodrill	6b234323a0	tstest/integration/vms: fix flake when testing (#2145 ) Occasionally the test framework would fail with a timeout due to a virtual machine not phoning home in time. This seems to be happen whenever qemu can't bind the VNC or SSH ports for a virtual machine. This was fixed by taking the following actions: 1. Don't listen on VNC unless the `-use-vnc` flag is passed, this removes the need to listen on VNC at all in most cases. The option to use VNC is still left in for debugging virtual machines, but removing this makes it easier to deal with (VNC uses this odd system of "displays" that are mapped to ports above 5900, and qemu doesn't offer a decent way to use a normal port number, so we just disable VNC by default as a compromise). 2. Use a (hopefully) inactive port for SSH. In an ideal world I'd just have the VM's SSH port be exposed via a Unix socket, however the QEMU documentation doesn't really say if you can do this or not. While I do more research, this stopgap will have to make do. 3. Strictly tie more VM resource lifetimes to the tests themselves. Previously the disk image layers for virtual machines were only cleaned up at the end of the test and existed in the parent test-scoped temporary folder. This can make your tmpfs run out of space, which is not ideal. This should minimize the use of temporary storage as much as I know how to. 4. Strictly tie the qemu process lifetime to the lifetime of the test using testing.T#Cleanup. Previously it used a defer statement to clean up the qemu process, however if the tests timed out this defer was not run. This left around an orphaned qemu process that had to be killed manually. This change ensures that all qemu processes exit when their relevant tests finish. Signed-off-by: Christine Dodrill <xe@tailscale.com>	3 years ago
David Crawshaw	297b3d6fa4	staticcheck.conf: turn off noisy lint errors Signed-off-by: David Crawshaw <crawshaw@tailscale.com>	4 years ago
Christine Dodrill	e0f0d10672	tstest/integration/vms: log to t.Logf directly (#2147 ) Previously we used t.Logf indirectly via package log. This worked, but it was not ideal for our needs. It could cause the streams of output to get crossed. This change uses a logger.FuncWriter every place log.Output was previously used, which will more correctly write log information to the right test output stream. Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	8b2b899989	tstest/integration: test Alpine Linux (#2098 ) Alpine Linux[1] is a minimal Linux distribution built around musl libc. It boots very quickly, requires very little ram and is as close as you can get to an ideal citizen for testing Tailscale on musl. Alpine has a Tailscale package already[2], but this patch also makes it easier for us to provide an Alpine Linux package off of pkgs in the future. Alpine only offers Tailscale on the rolling-release edge branch. [1]: https://alpinelinux.org/ [2]: https://pkgs.alpinelinux.org/packages?name=tailscale&branch=edge Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	b402e76185	.github/workflows: add integration test with a custom runner (#2044 ) This runner is in my homelab while we muse about a better, more permanent home for these tests. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	622dc7b093	tstest/integration/vms: download images from s3 (#2035 ) This makes integration tests pull pristine VM images from Amazon S3 if they don't exist on disk. If the S3 fetch fails, it will fall back to grabbing the image from the public internet. The VM images on the public internet are known to be updated without warning and thusly change their SHA256 checksum. This is not ideal for a test that we want to be able to fire and forget, then run reliably for a very long time. This requires an AWS profile to be configured at the default path. The S3 bucket is rigged so that the requester pays. The VM images are currently about 6.9 gigabytes. Please keep this in mind when running these tests on your machine. Documentation was added to the integration test folder to aid others in running these tests on their machine. Some wording in the logs of the tests was altered. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	3f1405fa2a	tstest/integration/vms: bump images, fix caching bug (#2052 ) Before this redownloaded the image every time. Now it only redownloads it when it needs to. Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	adaecd83c8	tstest/integration/vms: add DownloadImages test to download images (#2039 ) The image downloads can take a significant amount of time for the tests. This creates a new test that will download every distro image into the local cache in parallel, optionally matching the distribution regex. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	607b7ab692	tstest/integration/vms: aggressively re-verify shasums (#2050 ) I've run into a couple issues where the tests time out while a VM image is being downloaded, making the cache poisoned for the next run. This moves the hash checking into its own function and calls it much sooner in the testing chain. If the hash check fails, the OS is redownloaded. Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	6ce77b8eca	tstest/integration/vms: log qemu output (#2047 ) Most of the time qemu will output nothing when it is running. This is expected behavior. However when qemu is unable to start due to some problem, it prints that to either stdout or stderr. Previously this output wasn't being captured. This patch captures that output to aid in debugging qemu issues. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	0a655309c6	tstest/integration/vms: only build binaries once (#2042 ) Previously this built the binaries for every distro. This is a bit overkill given we are using static binaries. This patch makes us only build once. There was also a weird issue with how processes were being managed. Previously we just killed qemu with Process.Kill(), however that was leaving behind zombies. This has been mended to not only kill qemu but also waitpid() the process so it doesn't become a zombie. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	a282819026	tstest/integration/vms: fix OpenSUSE Leap 15.1 (#2038 ) The OpenSUSE 15.1 image we are using (and conseqentially the only one that is really available easily given it is EOL) has cloud-init hardcoded to use the OpenStack metadata thingy. Other OpenSUSE Leap images function fine with the NoCloud backend, but this one seems to just not work with it. No bother, we can just pretend to be OpenStack. Thanks to Okami for giving me an example OpenStack configuration seed image. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	4da5e79c39	tstest/integration/vms: test on Arch Linux (#2040 ) Arch is a bit of a weirder distro, however as a side effect it is much more of a systemd purist experience. Adding it to our test suite will make sure that we are working in the systemd happy path. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	ca96357d4b	tstest/integration/vms: add OpenSUSE Leap 15.3 (#2026 ) This distro is about to be released. OpenSUSE has historically had the least coverage for functional testing, so this may prove useful in the future. Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	2802a01b81	tstest/integration/vms: test vms as they are ready (#2022 ) Instead of testing all the VMs at once when they are all ready, this patch changes the testing logic so that the vms are tested as soon as they register with testcontrol. Also limit the amount of VM ram used at once with the `-ram-limit` flag. That uses a semaphore to guard resource use. Also document CentOS' sins. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	36cb69002a	tstest/integration/vms: regex-match distros using a flag (#2021 ) If you set `-distro-regex` to match a subset of distros, only those distros will be tested. Ex: $ go test -run-vm-tests -distro-regex='opensuse' Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	e1b994f7ed	tstest/integration/vms: maintain distro info (#2020 ) This lets us see the names of distros in our tests. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Brad Fitzpatrick	fa548c5b96	tstest/integration/vms: fix bindhost lookup (#2012 ) Don't try to do heuristics on the name. Use the net/interfaces package which we already have to do this sort of stuff. Fixes #2011 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Christine Dodrill	14c1113d2b	tstest/integration/vms: copy locally built binaries (#2006 ) Instead of pulling packages from pkgs.tailscale.com, we should use the tailscale binaries that are local to this git commit. This exposes a bit of the integration testing stack in order to copy the binaries correctly. This commit also bumps our version of github.com/pkg/sftp to the latest commit. If you run into trouble with yaml, be sure to check out the commented-out alpine linux image complete with instructions on how to use it. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Brad Fitzpatrick	f21982f854	tstest/integration/vms: skip a test for now Updates #2011 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Christine Dodrill	4cfaf489ac	tstest/integration/vms: t.Log for VM output (#2007 ) Previously we spewed a lot of output to stdout and stderr, even when `-v` wasn't set. This is sub-optimal for various reasons. This patch shunts that output to test logs so it only shows up when `-v` is set. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	1f72b6f812	tstest/integration/vms: use dynamically discovered bindhost (#1992 ) Instead of relying on a libvirtd bridge address that you probably won't have on your system. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	35749ec297	tstest/integration/vms: small cleanups (#1989 ) Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago
Christine Dodrill	ba59c0391b	tstest/integration: add experimental integration test (#1966 ) This will spin up a few vms and then try and make them connect to a testcontrol server. Updates #1988 Signed-off-by: Christine Dodrill <xe@tailscale.com>	4 years ago

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74 Commits (13022952993c1d662dfed5326951fe5e15b0fc26)