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app/vmagent add metric for rate limit (#2521)

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This adds a metric for the rate limit.
The limit is present as a flag currently:
`flag{name="remoteWrite.rateLimit", value="500000", is_set="true"} 1`

We are running many instances of vmagent and when creating alerts it is harder than it needs to be when extracting the value from the flag.

With this change it should be easier to monitor how close to the limit we are.

`((100/vmagent_remotewrite_rate_limit{account="account"})*sum (rate(vmagent_remotewrite_conn_bytes_written_total{account="account"}))) and ON (account) flag{name="remoteWrite.rateLimit"} == 1`
This commit is contained in:
Gard Rimestad 2022-05-02 21:20:05 +02:00 committed by Aliaksandr Valialkin
parent 361b08c30e
commit ceadcb7f8e
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1 changed files with 4 additions and 0 deletions
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4
app/vmagent/remotewrite/client.go
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@ -78,6 +78,7 @@ type client struct {
requestsOKCount *metrics.Counter requestsOKCount *metrics.Counter
errorsCount *metrics.Counter errorsCount *metrics.Counter
packetsDropped *metrics.Counter packetsDropped *metrics.Counter
rateLimit *metrics.Gauge
retriesCount *metrics.Counter retriesCount *metrics.Counter
sendDuration *metrics.FloatCounter sendDuration *metrics.FloatCounter
@ -135,6 +136,9 @@ func (c *client) init(argIdx, concurrency int, sanitizedURL string) {
c.bytesSent = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_bytes_sent_total{url=%q}`, c.sanitizedURL)) c.bytesSent = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_bytes_sent_total{url=%q}`, c.sanitizedURL))
c.blocksSent = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_blocks_sent_total{url=%q}`, c.sanitizedURL)) c.blocksSent = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_blocks_sent_total{url=%q}`, c.sanitizedURL))
c.rateLimit = metrics.GetOrCreateGauge(fmt.Sprintf(`vmagent_remotewrite_rate_limit{url=%q}`, c.sanitizedURL), func() float64 {
return float64(rateLimit.GetOptionalArgOrDefault(argIdx, 0))
})
c.requestDuration = metrics.GetOrCreateHistogram(fmt.Sprintf(`vmagent_remotewrite_duration_seconds{url=%q}`, c.sanitizedURL)) c.requestDuration = metrics.GetOrCreateHistogram(fmt.Sprintf(`vmagent_remotewrite_duration_seconds{url=%q}`, c.sanitizedURL))
c.requestsOKCount = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_requests_total{url=%q, status_code="2XX"}`, c.sanitizedURL)) c.requestsOKCount = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_requests_total{url=%q, status_code="2XX"}`, c.sanitizedURL))
c.errorsCount = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_errors_total{url=%q}`, c.sanitizedURL)) c.errorsCount = metrics.GetOrCreateCounter(fmt.Sprintf(`vmagent_remotewrite_errors_total{url=%q}`, c.sanitizedURL))