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Issues with Monitoring HTTP Endpoints Configuration

TLDR Andre faced issues setting up monitoring for HTTP endpoints. Prashant and Srikanth provided guidance and troubleshooting. The issue was resolved after restarting Docker containers and configuring the dashboard panel.

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Feb 16, 2023 (7 months ago)
Andre
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Andre
03:18 PM
I followed the instructions, added two endpoints but nothing is showing up
https://signoz.io/docs/monitor-http-endpoints/
Ankit
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Ankit
04:35 PM
Prashant can you verify this?
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04:36
Ankit
04:36 PM
Srikanth should we add httpcheck receivers at otel-collector config or otel-collector-metrics config? https://signoz.io/docs/monitor-http-endpoints/#steps-to-monitor-the-health-of-the-http-endpoints
Srikanth
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Srikanth
04:40 PM
This should ideally go to otel-collector-metrics but it also works with otel-collector config if there is only one main collector.
Andre
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Andre
05:05 PM
moved it to otel-collector-metrics, still nothing showing up
Srikanth
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Srikanth
05:40 PM
Just to make sure we are on the same page, where are you verifying if this is working or not?
Andre
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Andre
05:40 PM
this does not work
05:40
Andre
05:40 PM
I tried in both configuration files
Srikanth
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Srikanth
05:41 PM
How are you verifying?
Andre
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Andre
05:41 PM
I updated the otel-collector-metrics and restarted the containter
05:41
Andre
05:41 PM
went to the interface, and nowthing shows up
Srikanth
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Srikanth
05:42 PM
> went to the interface, and nowthing shows up
Which interface are you referring to?
Andre
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Andre
05:42 PM
Image 1 for
Srikanth
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Srikanth
05:44 PM
You are looking at the wrong place. I am not sure if you understand the functionality of the monitoring HTTP endpoint. It checks whether the HTTP call to the endpoint returns success with the status code. It doesn’t create any traces. There will be a metric name with httpcheck_status which you can verify in the dashboard panel and can set alerts on but the traces is different altogether.
Andre
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Andre
05:46 PM
I think I understand
05:46
Andre
05:46 PM
it should query that endpoint every X seconds
05:46
Andre
05:46 PM
where can I see the statistics of that?
Srikanth
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Srikanth
05:48 PM
By statistics if you mean the metric value (either 1 or 0), you go to dashboards -> create new dashboard -> add panel -> time series -> and type httpcheck_status in the metric name text box.
Andre
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Andre
05:55 PM
its not showing there
05:56
Andre
05:56 PM
Image 1 for
06:03
Andre
06:03 PM
Image 1 for
Prashant
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Prashant
06:03 PM
works as expected
Image 1 for works as expected
Andre
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Andre
06:04 PM
it does not work
Prashant
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Prashant
06:04 PM
Andre can you share how you have overridden the config?
Andre
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Andre
06:04 PM
yes
06:05
Andre
06:05 PM
Image 1 for
06:05
Andre
06:05 PM
Image 1 for
Prashant
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Prashant
06:06 PM
okay, looks good.
06:06
Prashant
06:06 PM
Have you restarted the container with the updated config?
Andre
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Andre
06:07 PM
yes
06:07
Andre
06:07 PM
Image 1 for
Prashant
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Prashant
06:08 PM
In case of Docker, often times config changes do not reflect when restarted directly.
06:08
Prashant
06:08 PM
Try stopping => removing the container, and start again.
Andre
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Andre
06:08 PM
what?
Prashant
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Prashant
06:09 PM
docker stop clickhouse-setup-otel-collector-metrics-1
docker rm clickhouse-setup-otel-collector-metrics-1

./install.sh
06:10
Prashant
06:10 PM
I verified that it works in K8s.
Let me check that in Docker as well.
Andre
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Andre
06:10 PM
restarted
06:10
Andre
06:10 PM
lets lee
06:10
Andre
06:10 PM
see
Prashant
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Prashant
06:11 PM
wait for the interval duration.. and retry creating metrics in dashboard
Andre
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Andre
06:12 PM
at least the option now shows up in the dropdown
06:13
Andre
06:13 PM
but still no data
06:13
Andre
06:13 PM
Image 1 for
Prashant
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Prashant
06:15 PM
hover over the widget
Andre
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Andre
06:17 PM
this should be generating datapoints every 5 seconds on the 1st API and every 15 seconds on the second API
06:20
Andre
06:20 PM
Image 1 for
06:20
Andre
06:20 PM
Image 1 for
06:21
Andre
06:21 PM
why are there so many?
06:21
Andre
06:21 PM
this is super hard to read
06:23
Andre
06:23 PM
how can I filter the statuses?
Prashant
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Prashant
06:23 PM
use where condition to filter URLs, and use Legends to format the labels.
Andre
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Andre
06:25 PM
Image 1 for
06:25
Andre
06:25 PM
does not work
06:27
Andre
06:27 PM
grouping also does not work
06:27
Andre
06:27 PM
Image 1 for
Prashant
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Prashant
06:39 PM
grouping only works in aggregator function..
it does not work for NOOP
Andre
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Andre
06:40 PM
Image 1 for
06:40
Andre
06:40 PM
is this correct with NOOP?
06:46
Andre
06:46 PM
also is it possible that the condition for testing an endpoint is an expected json response instead of just 200?
Feb 17, 2023 (7 months ago)
Srikanth
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Srikanth
06:37 AM
No, that’s not possible as of now.

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