Commit Graph

16 Commits (04b57a371e52dfc86315703bd7f2c7d1f7666c75)

Author SHA1 Message Date
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