hammer ping shows pulp failure with `500 Internal Server Error` and `mod_wsgi (pid=18246): Exception occurred processing WSGI script '/srv/pulp/webservices.wsgi'` error is observed.

Solution Verified - Updated -

Environment

  • Red Hat Satellite 6.1

Issue

  • Getting We're sorry, but something went wrong error while accessing Content Hosts page from Satellite 6 WebUI.

  • Following is the output of hammer ping command:

    # hammer ping
   candlepin:
   Status:          ok
   Server Response: Duration: 45ms
   candlepin_auth:
   Status:          ok
   Server Response: Duration: 45ms
   pulp:
   Status:          FAIL
   Server Response: Message: 500 Internal Server Error
   elasticsearch:
   Status:          ok
   Server Response: Duration: 37ms
   foreman_tasks:
   Status:          ok
   Server Response: Duration: 1ms

  • Below errors are found in /var/log/messages file.

    mod_wsgi (pid=18246): Exception occurred processing WSGI script '/srv/pulp/webservices.wsgi'.
 Traceback (most recent call last):
   File "/srv/pulp/webservices.wsgi", line 16, in <module>
     from pulp.server.webservices.application import wsgi_application
   File "/usr/lib/python2.6/site-packages/pulp/server/webservices/application.py", line 42, in <module>
     logs.start_logging()
   File "/usr/lib/python2.6/site-packages/pulp/server/logs.py", line 67, in start_logging
     facility=CompliantSysLogHandler.LOG_DAEMON)
   File "/usr/lib64/python2.6/logging/handlers.py", line 721, in __init__
     self._connect_unixsocket(address)
   File "/usr/lib64/python2.6/logging/handlers.py", line 737, in _connect_unixsocket
     self.socket.connect(address)
   File "<string>", line 1, in connect
 error: [Errno 2] No such file or directory

Resolution

  • Restore the original /etc/rsyslog.conf file and restart the katello services.

    # katello-service restart

  • Ensure the SELinux context for /dev/log is as follows:

    # ls -lZ /dev/log
  srw-rw-rw-. root root system_u:object_r:devlog_t:s0    /dev/log

Root Cause

  • Some manual changes were made in /etc/rsyslog.conf file and the system was rebooted; after that, the /dev/log directory is missing.

    # ls -lZ /dev/log
  ls: cannot access /dev/log: No such file or directory

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