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#support
Title
# support
r

Rahul Mahale

12/19/2022, 4:57 AM
Hello team, I am following the signoz documentation and trying to instrument the Ruby on Rails app. However, My app is failing to start with the error below.
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OpenTelemetry error: Unable to export 9 span
p

Pranay

12/19/2022, 5:58 AM
@Vishal Sharma Do you have more insights on this?
n

nitya-signoz

12/19/2022, 10:18 AM
Hi, is this a sample application that you are trying to run or a production application to which you are trying to add instrumentation ?
v

Vishal Sharma

12/19/2022, 10:22 AM
@Rahul Mahale Did you specific
OTEL_EXPORTER_OTLP_ENDPOINT
as signoz endpoint?
r

Rahul Mahale

12/19/2022, 10:24 AM
Yes, The env variable looks like this and it is accessible too.
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echo $OTEL_EXPORTER_OTLP_ENDPOINT
signoz-otel-collector.platform.svc.cluster.local:4318
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telnet signoz-otel-collector.platform.svc.cluster.local 4318
Trying 172.20.109.100...
Connected to signoz-otel-collector.platform.svc.cluster.local.
Escape character is '^]'.
@Vishal Sharma anything else I am missing ?
v

Vishal Sharma

12/19/2022, 10:28 AM
@Rahul Mahale Can you please share more logs related to opentelemetry when you start your app?
r

Rahul Mahale

12/19/2022, 10:28 AM
sure.
DMed you log file
v

Vishal Sharma

12/19/2022, 10:35 AM
I see that some of the instrumentations failed to intialize:
WARN -- : Instrumentation: OpenTelemetry:Instrumentation:ActiveModelSerializers failed to install
I will try to instrument myself and get back to you
r

Rahul Mahale

12/19/2022, 10:36 AM
thanks
v

Vishal Sharma

12/19/2022, 10:44 AM
I was able to instrument after I followed same steps as mentioned in doc: https://signoz.io/blog/opentelemetry-ruby/
r

Rahul Mahale

12/19/2022, 10:45 AM
Interesting.
do you have few minutes to join on screenshare call ?
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