tailscale

Commit Graph

Author	SHA1	Message	Date
Anton Tolchanov	5336362e64	prober: export probe class and metrics from bandwidth prober - Wrap each prober function into a probe class that allows associating metric labels and custom metrics with a given probe; - Make sure all existing probe classes set a `class` metric label; - Move bandwidth probe size from being a metric label to a separate gauge metric; this will make it possible to use it to calculate average used bandwidth using a PromQL query; - Also export transfer time for the bandwidth prober (more accurate than the total probe time, since it excludes connection establishment time). Updates tailscale/corp#17912 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	8 months ago
Anton Tolchanov	21671ca374	prober: remove unused notification code Signed-off-by: Anton Tolchanov <anton@tailscale.com>	8 months ago
Andrew Dunham	7d7d159824	prober: support creating multiple probes in ForEachAddr So that we can e.g. check TLS on multiple ports for a given IP. Updates tailscale/corp#16367 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I81d840a4c88138de1cbb2032b917741c009470e6	8 months ago
Andrew Dunham	ac574d875c	prober: add helper function to check all IPs for a DNS hostname This allows us to check all IP addresses (and address families) for a given DNS hostname while dynamically discovering new IPs and removing old ones as they're no longer valid. Also add a testable example that demonstrates how to use it. Alternative to #11610 Updates tailscale/corp#16367 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I6d6f39bafc30e6dfcf6708185d09faee2a374599	8 months ago
Anton Tolchanov	f12d2557f9	prober: add a DERP bandwidth probe Updates tailscale/corp#17912 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	8 months ago
Anton Tolchanov	5018683d58	prober: remove unused derp prober latency measurements Signed-off-by: Anton Tolchanov <anton@tailscale.com>	8 months ago
Anton Tolchanov	205a10b51a	prober: export probe counters and cumulative latency Updates #cleanup Signed-off-by: Anton Tolchanov <anton@tailscale.com>	8 months ago
Brad Fitzpatrick	a4a909a20b	prober: add TLS probe constructor to split dial addr from cert name So we can probe load balancers by their unique DNS name but without asking for that cert name. Updates tailscale/corp#13050 Change-Id: Ie4c0a2f951328df64281ed1602b4e624e3c8cf2e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	9 months ago
Anton Tolchanov	869b34ddeb	prober: log HTTP response body on failure Signed-off-by: Anton Tolchanov <anton@tailscale.com>	12 months ago
Thomas Kosiewski	96a80fcce3	Add support for custom DERP port in TLS prober Updates #10146 Signed-off-by: Thomas Kosiewski <thoma471@googlemail.com>	1 year ago
valscale	f314fa4a4a	prober: fix data race when altering derpmap (#8397 ) Move the clearing of STUNOnly flag to the updateMap() function. Fixes #8395 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
valscale	88097b836a	prober: allow monitoring of nodes marked as STUN only in default derpmap (#8391 ) prober uses NewRegionClient() to connect to a derper using a faked up single-node region, but NewRegionClient() fails to connect if there is no non-STUN only client in the region. Set the STUN only flag to false before we call NewRegionClient() so we can monitor nodes marked as STUN only in the default derpmap. Updates #11492 Signed-off-by: Val <valerie@tailscale.com>	1 year ago
Mihai Parparita	7330aa593e	all: avoid repeated default interface lookups On some platforms (notably macOS and iOS) we look up the default interface to bind outgoing connections to. This is both duplicated work and results in logspam when the default interface is not available (i.e. when a phone has no connectivity, we log an error and thus cause more things that we will try to upload and fail). Fixed by passing around a netmon.Monitor to more places, so that we can use its cached interface state. Fixes #7850 Updates #7621 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Andrew Dunham	280255acae	various: add golangci-lint, fix issues (#7905 ) This adds an initial and intentionally minimal configuration for golang-ci, fixes the issues reported, and adds a GitHub Action to check new pull requests against this linter configuration. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I8f38fbc315836a19a094d0d3e986758b9313f163	2 years ago
Anton Tolchanov	c153e6ae2f	prober: migrate to Prometheus metric library This provides an example of using native Prometheus metrics with tsweb. Prober library seems to be the only user of PrometheusVar, so I am removing support for it in tsweb. Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	7083246409	prober: only record latency for successful probes This will make it easier to track probe latency on a dashboard. Updates https://github.com/tailscale/corp/issues/9916 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	e59dc29a55	prober: log client pubkeys on derp mesh probe failures Updates https://github.com/tailscale/corp/issues/9916 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	100d8e909e	cmd/derpprobe: migrate to the prober framework `prober.DERP` was created in #5988 based on derpprobe. Having used it instead of derpprobe for a few months, I think we have enough confidence that it works and can now migrate derpprobe to use the prober framework and get rid of code duplication. A few notable changes in behaviour: - results of STUN probes over IPv4 and IPv6 are now reported separately; - TLS probing now includes OCSP verification; - probe names in the output have changed; - ability to send Slack notification from the prober has been removed. Instead, the prober now exports metrics in Expvar (/debug/vars) and Prometheus (/debug/varz) formats. Fixes https://github.com/tailscale/corp/issues/8497 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Will Norris	71029cea2d	all: update copyright and license headers This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Brad Fitzpatrick	a1b4ab34e6	util/httpm: add new package for prettier HTTP method constants See package doc. Change-Id: Ibbfc8e1f98294217c56f3a9452bd93ffa3103572 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Andrew Dunham	06b55ab50f	prober: fix test flake This was tested by running 10000 test iterations and observing no flakes after this change was made. Change-Id: Ib036fd03a3a17800132c53c838cc32bfe2961306 Signed-off-by: Andrew Dunham <andrew@tailscale.com>	2 years ago
Anton Tolchanov	bd47e28638	prober: optionally spread probes over time By default all probes with the same probe interval that have been added together will run on a synchronized schedule, which results in spiky resource usage and potential throttling by third-party systems (for example, OCSP servers used by the TLS probes). To address this, prober can now run in "spread" mode that will introduce a random delay before the first run of each probe. Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	69f61dcad8	prober: add a DERP probe manager based on derpprobe This ensures that each DERP server is probed individually (TLS and STUN) and also manages per-region mesh probing. Actual probing code has been copied from cmd/derpprobe. Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Denton Gentry	b55761246b	prober: add utilities to generate alerts and warnings. sendAlert will trigger the Incident Response system. sendWarning will post to Slack. Co-authored-by: M. J. Fromberger <fromberger@tailscale.com> Signed-off-by: Denton Gentry <dgentry@tailscale.com>	2 years ago
Anton Tolchanov	26af329fde	prober: expand certificate verification logic in the TLS prober TLS prober now checks validity period for all server certificates and verifies OCSP revocation status for the leaf cert. Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Josh Soref	d4811f11a0	all: fix spelling mistakes Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>	2 years ago
Brad Fitzpatrick	4950fe60bd	syncs, all: move to using Go's new atomic types instead of ours Fixes #5185 Change-Id: I850dd532559af78c3895e2924f8237ccc328449d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	116f55ff66	all: gofmt for Go 1.19 Updates #5210 Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
David Anderson	7c7f37342f	prober: used keyed initializer for LimitedReader. Reported by go vet. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Dave Anderson	0968b2d55a	prober: support adding key/value labels to probes. (#4250 ) prober: add labels to Probe instances. This allows especially dynamically-registered probes to have a bunch more dimensions along which they can be sliced in Prometheus. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	a09c30aac2	prober: refactor probe state into a Probe struct. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	94aaec5c66	prober: rename Probe to ProbeFunc. Making way for a future Probe struct to encapsulate per-probe state. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	19f61607b6	prober: run all probes once on initial registration. Turns out, it's annoying to have to wait the entire interval before getting any monitorable data, especially for very long interval probes like hourly/daily checks. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	e41a3b983c	prober: library to build healthchecking probers. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago

34 Commits (8186cd034902e2f2edd0616f5f03b0e72f1dfc8f)