topic Re: Intermittent Synthetic Monitoring connection timeout in Synthetic Monitoring

Intermittent Synthetic Monitoring connection timeout

naventran — Wed, 20 Feb 2019 02:58:24 GMT

Hi all, I have created a browser clickpath synthetic monitoring to monitor the website https://www.kpwkm.gov.my I have set two locations to test the website, consists of N.Virginia and Sydney. It will send synthetic request with an interval of 15 minutes.

As a result, I am seeing intermittent connection timeout to the website. The issue is only occuring at the location N.Virginia. However, when I tried to VPN from the United States servers, the website seems to load succesfully.

Anyone, can anyone guide me to troubleshooot the connection timeout issue?

Re: Intermittent Synthetic Monitoring connection timeout

ChadTurner — Fri, 01 May 2020 13:47:50 GMT

Are you still having this issue? Can you drill down into the synthetic and see if there is any other information surrounding the timeout?

Re: Intermittent Synthetic Monitoring connection timeout

ct_27 — Mon, 06 Dec 2021 18:22:53 GMT

For those that landed here a related and more recent discussion is occurring here:

https://community.dynatrace.com/t5/Synthetic-Monitoring/Request-timeout-for-synthetic-monitor-in-Dynatrace/td-p/125253

Re: Intermittent Synthetic Monitoring connection timeout

AgataWlodarczyk — Wed, 15 Dec 2021 12:46:48 GMT

Hi @naventran ,

@Konrad_Lisiecki answered this question in a different place. Please find out a copy of it below.

"You can modify requests and connect timeouts used by your particular synthetic-enabled AG. This can be achieved by adding/modifying custom configuration files as below. There's however no possibility to overwrite settings per particular monitor.

Assuming default installation paths were used:

HTTP monitors settings

/var/lib/dynatrace/gateway/config/custom.properties

[synthetic]
requestTimeoutInMs = 10000
connectTimeoutInMs = 5000

Browser monitors settings

/var/lib/dynatrace/synthetic/config/user.properties

com.ruxit.vuc.http.httpClient.socketTimeoutMs=10000
com.ruxit.vuc.http.httpClient.connectTimeoutMs=5000

Re: Intermittent Synthetic Monitoring connection timeout

fstekelenburg — Wed, 15 Dec 2021 18:59:16 GMT

Of course this applies if we're talking about private synthetic monitoring.
It's not completely clear if the Topic Starter uses private or public endpoints, but by the names used I think these are public (AWS) locations.
Under settings of the application specific Performance thresholds can be set.

Re: Intermittent Synthetic Monitoring connection timeout

ct_27 — Wed, 15 Dec 2021 19:28:21 GMT

Great solution Agata. I wanted to help everyone a bit more regarding mass update using Monaco.

We had the same original problem in our organization but we had roughly 500 synthetics it impacted. So, using Monaco we managed to adjust everything to 60 seconds (from 10 seconds) in seconds.

You need to be familiar with Monaco (https://www.dynatrace.com/news/blog/monitoring-as-code/).

1) Using beta version 2 (NEW_CLI=1) of Monaco run a 'download'. This will export all your configurations.

2) From the output copy the 'synthetic-monitor' folder to another location

3) Change directory to your new location

4) Using something like Notepad++, do an "All Open Files" find&replace for

Find: "requestTimeout": 10

Replace: "requestTimeout": 60,

5) Now (in your new location) run Monaco with the "deploy" command (e.g. monaco deploy -e "environments.yaml" -p "projects" -c

Suggestion: Before running step 4 you may want to run the command with a -d to conduct a dry-run and ensure everything is right.

That's it, all 500 synthetics will be updated to 60 seconds or however many seconds you pass into it.