tailscale

Commit Graph

Author	SHA1	Message	Date
Anton Tolchanov	46db698333	prober: make status page more clear Updates tailscale/corp#20583 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	3 months ago
Anton Tolchanov	9106187a95	prober: support JSON response in RunHandler Updates tailscale/corp#20583 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	3 months ago
Anton Tolchanov	153a476957	prober: add an HTTP endpoint for triggering a probe - Keep track of the last 10 probe results and successful probe latencies; - Add an HTTP handler that triggers a given probe by name and returns it result as a plaintext HTML page, showing recent probe results as a baseline Updates tailscale/corp#20583 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	3 months ago
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>	7 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
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	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
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
Josh Soref	d4811f11a0	all: fix spelling mistakes Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.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
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

17 Commits (2aa9125ac438ffa902158b5bedf9791c93117b9b)