Kiu/VictoriaMetrics
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all: use net.Dial instead of fasthttp.Dial, because fasthttp.Dial limits the number of concurrent dials to 1000

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This commit is contained in:
Aliaksandr Valialkin 2021-01-11 12:50:10 +02:00
parent 6740294ebb
commit 24ffad74c1
7 changed files with 16 additions and 15 deletions
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9
app/vmagent/remotewrite/statconn.go
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@ -5,9 +5,9 @@ import (
"net"
"strings"
"sync/atomic"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
"github.com/VictoriaMetrics/fasthttp"
"github.com/VictoriaMetrics/metrics"
)
@ -15,11 +15,10 @@ func statDial(network, addr string) (conn net.Conn, err error) {
if !strings.HasPrefix(network, "tcp") {
return nil, fmt.Errorf("unexpected network passed to statDial: %q; it must start from `tcp`", network)
}
if netutil.TCP6Enabled() {
conn, err = fasthttp.DialDualStack(addr)
} else {
conn, err = fasthttp.Dial(addr)
if !netutil.TCP6Enabled() {
network = "tcp4"
}
conn, err = net.DialTimeout(network, addr, 5*time.Second)
dialsTotal.Inc()
if err != nil {
dialErrors.Inc()

2
docs/CHANGELOG.md
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@ -2,6 +2,8 @@
# tip
* BUGFIX: vmagent: prevent from `dialing to the given TCP address time out` error when scraping big number of unavailable targets. See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/987
* FEATURE: disable final merge for data for the previous month at the beginning of new month, since it may result in high disk IO and CPU usage. Final merge can be enabled by setting `-finalMergeDelay` command-line flag to positive duration.

2
go.mod
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@ -7,7 +7,7 @@ require (
// Do not use the original github.com/valyala/fasthttp because of issues
// like https://github.com/valyala/fasthttp/commit/996610f021ff45fdc98c2ce7884d5fa4e7f9199b
github.com/VictoriaMetrics/fasthttp v1.0.10
github.com/VictoriaMetrics/fasthttp v1.0.11
github.com/VictoriaMetrics/metrics v1.12.3
github.com/VictoriaMetrics/metricsql v0.9.1
github.com/aws/aws-sdk-go v1.36.23

4
go.sum
View File

@ -41,8 +41,8 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
github.com/VictoriaMetrics/fastcache v1.5.7 h1:4y6y0G8PRzszQUYIQHHssv/jgPHAb5qQuuDNdCbyAgw=
github.com/VictoriaMetrics/fastcache v1.5.7/go.mod h1:ptDBkNMQI4RtmVo8VS/XwRY6RoTu1dAWCbrk+6WsEM8=
github.com/VictoriaMetrics/fasthttp v1.0.10 h1:1UbdmWK59j7znylu55r0y66/zTaHbw+Xk+ObSGVywmE=
github.com/VictoriaMetrics/fasthttp v1.0.10/go.mod h1:3SeUL4zwB/p/a9aEeRc6gdlbrtNHXBJR6N376EgiSHU=
github.com/VictoriaMetrics/fasthttp v1.0.11 h1:6XOvE1pF/EhW8qoi7V5qJQJ2rhNV+UGrb1/a9vMbTiw=
github.com/VictoriaMetrics/fasthttp v1.0.11/go.mod h1:3SeUL4zwB/p/a9aEeRc6gdlbrtNHXBJR6N376EgiSHU=
github.com/VictoriaMetrics/metrics v1.12.2/go.mod h1:Z1tSfPfngDn12bTfZSCqArT3OPY3u88J12hSoOhuiRE=
github.com/VictoriaMetrics/metrics v1.12.3 h1:Fe6JHC6MSEKa+BtLhPN8WIvS+HKPzMc2evEpNeCGy7I=
github.com/VictoriaMetrics/metrics v1.12.3/go.mod h1:Z1tSfPfngDn12bTfZSCqArT3OPY3u88J12hSoOhuiRE=

7
lib/proxy/proxy.go
View File

@ -7,6 +7,7 @@ import (
"fmt"
"net"
"net/url"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/netutil"
"github.com/VictoriaMetrics/fasthttp"
@ -80,10 +81,12 @@ func (u *URL) NewDialFunc(tlsConfig *tls.Config) (fasthttp.DialFunc, error) {
}
func defaultDialFunc(addr string) (net.Conn, error) {
network := "tcp4"
if netutil.TCP6Enabled() {
return fasthttp.DialDualStack(addr)
network = "tcp"
}
return fasthttp.Dial(addr)
// Do not use fasthttp.Dial because of https://github.com/VictoriaMetrics/VictoriaMetrics/issues/987
return net.DialTimeout(network, addr, 5*time.Second)
}
// sendConnectRequest sends CONNECT request to proxyConn for the given addr and authHeader and returns the established connection to dstAddr.

5
vendor/github.com/VictoriaMetrics/fasthttp/tcpdialer.go generated vendored
View File

@ -190,9 +190,6 @@ func (d *tcpDialer) NewDial(timeout time.Duration) DialFunc {
if err == ErrDialTimeout {
return nil, err
}
if err, ok := err.(net.Error); ok && err.Timeout() {
return nil, err
}
idx++
n--
}
@ -235,7 +232,7 @@ func tryDial(network string, addr *net.TCPAddr, deadline time.Time, concurrencyC
ch := chv.(chan dialResult)
go func() {
var dr dialResult
dr.conn, dr.err = net.DialTimeout(network, addr.String(), timeout)
dr.conn, dr.err = net.DialTCP(network, nil, addr)
ch <- dr
<-concurrencyCh
}()

2
vendor/modules.txt vendored
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@ -10,7 +10,7 @@ cloud.google.com/go/internal/version
cloud.google.com/go/storage
# github.com/VictoriaMetrics/fastcache v1.5.7
github.com/VictoriaMetrics/fastcache
# github.com/VictoriaMetrics/fasthttp v1.0.10
# github.com/VictoriaMetrics/fasthttp v1.0.11
github.com/VictoriaMetrics/fasthttp
github.com/VictoriaMetrics/fasthttp/fasthttputil
github.com/VictoriaMetrics/fasthttp/stackless