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tsweb: expose native Prometheus metrics in /debug/varz

Browse Source 
The handler will expose built-in process and Go metrics by default,
which currently duplicate some of the expvar-proxied metrics
(`goroutines` vs `go_goroutines`, `memstats` vs `go_memstats`), but as
long as their names are different, Prometheus server will just scrape
both.

This will change /debug/varz behaviour for most tsweb binaries, but
notably not for control, which configures a `tsweb.VarzHandler`
[explicitly](a5b5d5167f/cmd/tailcontrol/tailcontrol.go (L779))

Updates https://github.com/tailscale/corp/issues/10205

Signed-off-by: Anton Tolchanov <anton@tailscale.com>
This commit is contained in:
Anton Tolchanov
2023-04-03 11:23:37 +01:00
committed by Anton Tolchanov
parent 690446c784
commit 11e6247d2a
6 changed files with 155 additions and 39 deletions
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44
cmd/tailscaled/depaware.txt
View File

@@ -69,6 +69,8 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
L github.com/aws/smithy-go/transport/http from github.com/aws/aws-sdk-go-v2/aws/middleware+
L github.com/aws/smithy-go/transport/http/internal/io from github.com/aws/smithy-go/transport/http
L github.com/aws/smithy-go/waiter from github.com/aws/aws-sdk-go-v2/service/ssm
github.com/beorn7/perks/quantile from github.com/prometheus/client_golang/prometheus
💣 github.com/cespare/xxhash/v2 from github.com/prometheus/client_golang/prometheus
L github.com/coreos/go-iptables/iptables from tailscale.com/wgengine/router
LD 💣 github.com/creack/pty from tailscale.com/ssh/tailssh
W 💣 github.com/dblohm7/wingoes from github.com/dblohm7/wingoes/com
@@ -78,6 +80,8 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
W 💣 github.com/go-ole/go-ole/oleutil from tailscale.com/wgengine/winnet
L 💣 github.com/godbus/dbus/v5 from tailscale.com/net/dns+
github.com/golang/groupcache/lru from tailscale.com/net/dnscache
github.com/golang/protobuf/proto from github.com/matttproud/golang_protobuf_extensions/pbutil+
github.com/golang/protobuf/ptypes/timestamp from github.com/prometheus/client_model/go
github.com/google/btree from gvisor.dev/gvisor/pkg/tcpip/header+
github.com/hdevalence/ed25519consensus from tailscale.com/tka
L 💣 github.com/illarion/gonotify from tailscale.com/net/dns
@@ -99,6 +103,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
github.com/klauspost/compress/zstd/internal/xxhash from github.com/klauspost/compress/zstd
github.com/kortschak/wol from tailscale.com/ipn/ipnlocal
LD github.com/kr/fs from github.com/pkg/sftp
github.com/matttproud/golang_protobuf_extensions/pbutil from github.com/prometheus/common/expfmt
L github.com/mdlayher/genetlink from tailscale.com/net/tstun
L 💣 github.com/mdlayher/netlink from github.com/jsimonetti/rtnetlink+
L 💣 github.com/mdlayher/netlink/nlenc from github.com/jsimonetti/rtnetlink+
@@ -108,6 +113,15 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
W github.com/pkg/errors from github.com/tailscale/certstore
LD github.com/pkg/sftp from tailscale.com/ssh/tailssh
LD github.com/pkg/sftp/internal/encoding/ssh/filexfer from github.com/pkg/sftp
💣 github.com/prometheus/client_golang/prometheus from tailscale.com/tsweb
github.com/prometheus/client_golang/prometheus/internal from github.com/prometheus/client_golang/prometheus
github.com/prometheus/client_model/go from github.com/prometheus/client_golang/prometheus+
github.com/prometheus/common/expfmt from github.com/prometheus/client_golang/prometheus+
github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg from github.com/prometheus/common/expfmt
github.com/prometheus/common/model from github.com/prometheus/client_golang/prometheus+
LD github.com/prometheus/procfs from github.com/prometheus/client_golang/prometheus
LD github.com/prometheus/procfs/internal/fs from github.com/prometheus/procfs
LD github.com/prometheus/procfs/internal/util from github.com/prometheus/procfs
W 💣 github.com/tailscale/certstore from tailscale.com/control/controlclient
LD github.com/tailscale/golang-x-crypto/chacha20 from github.com/tailscale/golang-x-crypto/ssh
LD 💣 github.com/tailscale/golang-x-crypto/internal/subtle from github.com/tailscale/golang-x-crypto/chacha20
@@ -141,6 +155,34 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
go4.org/netipx from tailscale.com/ipn/ipnlocal+
W 💣 golang.zx2c4.com/wintun from github.com/tailscale/wireguard-go/tun+
W 💣 golang.zx2c4.com/wireguard/windows/tunnel/winipcfg from tailscale.com/net/dns+
google.golang.org/protobuf/encoding/prototext from github.com/golang/protobuf/proto+
google.golang.org/protobuf/encoding/protowire from github.com/golang/protobuf/proto+
google.golang.org/protobuf/internal/descfmt from google.golang.org/protobuf/internal/filedesc
google.golang.org/protobuf/internal/descopts from google.golang.org/protobuf/internal/filedesc+
google.golang.org/protobuf/internal/detrand from google.golang.org/protobuf/internal/descfmt+
google.golang.org/protobuf/internal/encoding/defval from google.golang.org/protobuf/internal/encoding/tag+
google.golang.org/protobuf/internal/encoding/messageset from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/encoding/tag from google.golang.org/protobuf/internal/impl
google.golang.org/protobuf/internal/encoding/text from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/errors from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/filedesc from google.golang.org/protobuf/internal/encoding/tag+
google.golang.org/protobuf/internal/filetype from google.golang.org/protobuf/runtime/protoimpl
google.golang.org/protobuf/internal/flags from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/genid from google.golang.org/protobuf/encoding/prototext+
💣 google.golang.org/protobuf/internal/impl from google.golang.org/protobuf/internal/filetype+
google.golang.org/protobuf/internal/order from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/pragma from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/set from google.golang.org/protobuf/encoding/prototext
💣 google.golang.org/protobuf/internal/strs from google.golang.org/protobuf/encoding/prototext+
google.golang.org/protobuf/internal/version from google.golang.org/protobuf/runtime/protoimpl
google.golang.org/protobuf/proto from github.com/golang/protobuf/proto+
google.golang.org/protobuf/reflect/protodesc from github.com/golang/protobuf/proto
💣 google.golang.org/protobuf/reflect/protoreflect from github.com/golang/protobuf/proto+
google.golang.org/protobuf/reflect/protoregistry from github.com/golang/protobuf/proto+
google.golang.org/protobuf/runtime/protoiface from github.com/golang/protobuf/proto+
google.golang.org/protobuf/runtime/protoimpl from github.com/golang/protobuf/proto+
google.golang.org/protobuf/types/descriptorpb from google.golang.org/protobuf/reflect/protodesc
google.golang.org/protobuf/types/known/timestamppb from github.com/golang/protobuf/ptypes/timestamp+
gvisor.dev/gvisor/pkg/atomicbitops from gvisor.dev/gvisor/pkg/tcpip+
gvisor.dev/gvisor/pkg/bits from gvisor.dev/gvisor/pkg/bufferv2
💣 gvisor.dev/gvisor/pkg/bufferv2 from gvisor.dev/gvisor/pkg/tcpip+
@@ -423,6 +465,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
expvar from tailscale.com/derp+
flag from net/http/httptest+
fmt from compress/flate+
go/token from google.golang.org/protobuf/internal/strs
hash from crypto+
hash/adler32 from tailscale.com/ipn/ipnlocal
hash/crc32 from compress/gzip+
@@ -461,6 +504,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
regexp from github.com/coreos/go-iptables/iptables+
regexp/syntax from regexp
runtime/debug from github.com/klauspost/compress/zstd+
runtime/metrics from github.com/prometheus/client_golang/prometheus+
runtime/pprof from tailscale.com/log/logheap+
runtime/trace from net/http/pprof
sort from compress/flate+