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Webserver reports "Error reading from remote server returned by" #1862

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dr0i opened this issue Aug 15, 2023 · 3 comments · Fixed by #1863
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Webserver reports "Error reading from remote server returned by" #1862

dr0i opened this issue Aug 15, 2023 · 3 comments · Fixed by #1863
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dr0i commented Aug 15, 2023 •
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Sometimes the webserver cannot serve. It logs "Error reading from remote server returned by ...". The can be caused by many things. These two are among them:

a) Could not create OPAC URL
java.net.UnknownHostException: raw.githubusercontent.com
b) play.api.UnexpectedException: Unexpected exception[UnknownHostException: lobid.org: Temporary failure in name resolution]
at play.api.http.HttpErrorHandlerExceptions

Solution might be to use the java option -DpreferIPv4Stack.

Check all instances:
@quaoar[13]:~/git$ grep UnknownHostException */web/logs/application.log
@dr0i dr0i self-assigned this Aug 15, 2023
@dr0i dr0i added the bug label Aug 15, 2023
@dr0i dr0i moved this from Backlog to Working in lobid-resources Aug 15, 2023
dr0i added a commit that referenced this issue Aug 15, 2023
@dr0i
Set java option to prefer ipv4 (#1862)
8998ee8
@dr0i dr0i mentioned this issue Aug 15, 2023
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@github-project-automation github-project-automation bot moved this from Working to Done in lobid-resources Aug 15, 2023
@dr0i dr0i mentioned this issue Aug 18, 2023
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dr0i commented Aug 18, 2023

This doesn't make the error (completely) disappear.

@dr0i dr0i moved this from Done to Ready in lobid-resources Aug 18, 2023
@dr0i dr0i reopened this Aug 18, 2023
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dr0i commented Oct 13, 2023

a) Could not create OPAC URL
java.net.UnknownHostException: raw.githubusercontent.com

The github lookup is substituted by using files via gitsubmodule, see #1902.

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dr0i commented Dec 19, 2023

This error appeared the last time at 2023-11-10 . As this is more than a month ago this issue seems to be resolved.
Closing.

@dr0i dr0i closed this as completed Dec 19, 2023
@github-project-automation github-project-automation bot moved this from Ready to Done in lobid-resources Dec 19, 2023
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Set java option to prefer ipv4 hbz/lobid-resources
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