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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 GitHub
parent 0d86644d65
commit d0706c8c95
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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
errorsCount *metrics.Counter
packetsDropped *metrics.Counter
rateLimit *metrics.Gauge
retriesCount *metrics.Counter
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.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.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))