Apache ErrorLog write log and execute Python script

Question

I'm trying to write Apache 2.4 errors to an error log and sending them to a Graylog2 server using a Python script. Looking at examples such as http://www.fnal.gov/docs/products/apache/syslog_logs_notes.html and http://zindilis.com/docs/apache-logs-to-remote-syslog.html. The examples show I should use tee, for example:

ErrorLog "| tee -a /var/log/httpd/error_log | nc -u -j syslog.example.com 514"

I'm doing the following:

ErrorLog "| /usr/bin/tee -a /var/log/httpd/domains/test.error.log | /usr/bin/python /opt/apache2gelf/test.py"

The messages are written to the logs but the python script is not executed. The Python script has 755 permissions. What am I missing here?

Looks good. How do you verify Python script is not executed? — Mikko Ohtamaa, Jun 26 '14 at 13:25
Sounds like something to do with `tee`'s buffer, have seen this myself using it in the past. This may help: http://stackoverflow.com/questions/11337041/force-line-buffering-of-stdout-when-piping-to-tee — arco444, Jun 26 '14 at 13:32
ErrorLog "|/usr/bin/python /opt/apache2gelf/test.py" works fine. Or did you mean something else? — user2511309, Jun 26 '14 at 14:29

M. Adel · Answer 1 · 2014-06-26T14:53:54.640

0

Try:

ErrorLog "| /usr/bin/tee -a /var/log/httpd/domains/test.error.log | xargs /opt/apache2gelf/test.py"

And make sure that the first line of your script is a proper interpreter, e.g #!/usr/bin/env python

edited Jun 26 '14 at 14:53

answered Jun 26 '14 at 14:34

M. Adel

Only the error log is written, the python script does not write to the test file. The first line of the Python script is #!/usr/bin/env python – user2511309 Jun 26 '14 at 14:40
I've updated the command in the answer "| xargs /opt/apache2gelf/test.py", try it. – M. Adel Jun 26 '14 at 14:55
Unfortunately I get exactly the same result as before. – user2511309 Jun 26 '14 at 15:22

1 Answers1