14 Commits (e567902aa9d02eec5eaaaa1561af394b886522be)

Author	SHA1	Message	Date
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