This commit adds a new usermetric package and wires
up metrics across the tailscale client.
Updates tailscale/corp#22075
Co-authored-by: Anton Tolchanov <anton@tailscale.com>
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
Some of our labels contain UTF-8 and get mojibaked in the browser
right now.
Updates tailscale/corp#18687
Change-Id: I6069cffd6cc8813df415f06bb308bc2fc3ab65c4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
From a problem we hit with how badger registers expvars; it broke
trunkd's exported metrics.
Updates tailscale/corp#1297
Change-Id: I42e1552e25f734c6f521b6e993d57a82849464b2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This splits Prometheus metric handlers exposed by tsweb into two
modules:
- `varz.Handler` exposes Prometheus metrics generated by our expvar
converter;
- `promvarz.Handler` combines our expvar-converted metrics and native
Prometheus metrics.
By default, tsweb will use the promvarz handler, however users can keep
using only the expvar converter. Specifically, `tailscaled` now uses
`varz.Handler` explicitly, which avoids a dependency on the
(heavyweight) Prometheus client.
Updates https://github.com/tailscale/corp/issues/10205
Signed-off-by: Anton Tolchanov <anton@tailscale.com>
