Add a PASSENGER_MAX_LOG_LINE_BYTES option increase the number of characters allowed per log line #2442
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An attempt to resolve #2413
My particular issue with Passenger splitting logs into multiple lines is that we use Filebeat to pipe logs to Logstash, and Logstash expects our Rails logging to be in
json
format. In cases where we have long stack traces, these multiline logs end up not being parsed correctly (with a_jsonparsefailure
on the Logstash side). Whilst there are multiline configurations available for both Filebeat and Logstash, it's recommended to use mulitline configs in Filebeat over Logstash. However, since Passenger appendsApp #{pid} output:
to each of the log lines, it means we'd need to strip out the extra text before stitching logs together. Whilst I also know the latest version of passenger contains the option to remove theApp #{pid} output:
prefix, it feels a bit simpler to just be able to configure Passenger to log larger contents into a single line without breaking it up.I tried looking at previous pull requests to figure out whether there's anywhere I would need to add this to the documentation, but couldn't find anything. Happy to add it if I'm pointed in the right direction.
Any feedback would be great! Thanks :)