Difference between revisions of "Logs (Linux)"

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* Debian/Ubuntu: <code>/var/log/auth.log</code>
 
* Debian/Ubuntu: <code>/var/log/auth.log</code>
 
* RHEL/Fedora: <code>/var/log/secure</code>
 
* RHEL/Fedora: <code>/var/log/secure</code>
 +
 +
Misc:
 +
* [[SUSE]]: <code>/var/log/warn.log</code>
 +
  
 
== Rsyslog ==
 
== Rsyslog ==

Revision as of 06:57, 19 December 2019

Linux logs are save usually in /var/log folder. Most linux distribution uses syslog, syslog-ng or rsyslog software for logging or sending them to remote servers. Analytics and visualisation software such a Elasticsearch and Kibana can be used for log inspection.

Usage by Distribution:

  • Debian/Ubuntu: rsyslog
  • RHEL/Fedora:

Standard logs:

  • Debian/Ubuntu: /var/log/syslog
  • RHEL/Fedora: /var/log/message

SSH sessions logging:

  • Debian/Ubuntu: /var/log/auth.log
  • RHEL/Fedora: /var/log/secure

Misc:

  • SUSE: /var/log/warn.log


Rsyslog

Rsyslogd supports queued operations to handle offline outputs. Official documentation: https://www.rsyslog.com/doc/v8-stable/configuration/index.html

Rsyslog Configuration

Default configuration files by Distribution:

Docker

docker logs command show docker logs. See also https://stackoverflow.com/questions/30969435/where-is-the-docker-daemon-log/30970134#30970134 for further information about docker logs.

See also

Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Source: https://en.wikiversity.org/wiki/Linux/logging

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