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jdeathe/debug-rsyslog-on-systemd-based-platforms.md

Last active March 23, 2021 08:50
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Debug RSyslog on RHEL, CentOS, Oracle Linux (el7/el8 platform)
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debug-rsyslog-on-systemd-based-platforms.md

How to Enable RSyslog Debugging for Systemd Service Manager

Ref:

Create a drop-in configuration for the service

  1. As root level user, use systemctl edit to create a configuration override.
# systemctl edit rsyslog.service
  1. Add the following Service configuration
[Service]

Environment="RSYSLOG_DEBUG=DebugOnDemand NoStdOut"
Environment="RSYSLOG_DEBUGLOG=/var/log/rsyslog-debug.log"
  1. Restart the service
# systemctl restart rsyslog.service
  1. Switch debugging on
# kill -USR1 "$(</var/run/rsyslogd.pid)"
  1. Review the debugging log
# less /var/log/rsyslog-debug.log
  1. Switch debugging off
# kill -USR1 "$(</var/run/rsyslogd.pid)"
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