UCS 2.4 - Univention

10.6 Logging of system messages and system status
The Univention Configuration Registry variable proxy/http can also be used to activate the setting of
this environment variable via an entry in /etc/profile.
The proxy URL must be specified for this, e.g., http://192.168.1.100. The proxy port
can be specified in the proxy URL using a colon, e.g., http://192.168.1.100:3128. If
the proxy requires authentication for the accessing user, this can be provided in the form
http://username:password@192.168.1.100.
The environment variable is not adopted for sessions currently opened. A relogin is required for the change
to be activated.
The Univention tools for software updates also support operation via a proxy and query the Univention
Configuration Registry variable .
Individual domains can be excluded from use by the proxy by including them separated by commas in the
Univention Configuration Registry variable proxy/no_proxy. Subdomains are taken into account; e.g.
an exception for univention.de also applies for apt.univention.de.
10.6 Logging of system messages and system status
10.6.1 Log files
All UCS-specific log files (e.g., for the listener/notifier replication) are stored in the
/var/log/univention directory. Services log in their own standard log files: for example, Samba in
/var/log/samba/log.smbd and /var/log/samba/log.nmbd.
The log files are managed by Logrotate. It ensures that log files are named in series in intervals (can
be configured in weeks using the Univention Configuration Registry variable log/rotate/weeks, with
the default setting being 12) and older log files are then deleted. For example, the current log file for
the Univention Directory Listener is found in the listener.log file; the one for the previous week in
listener.log.1, etc.
The Univention Configuration Registry variable log/rotate/univention/compress is used to config-
ure whether the older log files are additionally zipped with Gzip.
10.6.2 Logging the system status
univention-system-stats (available as of UCS 2.4-1) can be used to document the current system
status in the /var/log/univention/system-stats.log file. The following values are logged:
• The free disk space on the system partitions (df -lhT)
• The current process list (ps auxf)
• Two top lists of the current processes and system load (top -b -n2)
• The current free system memory (free)
• The time elapsed since the system was started (uptime)
• Temperature, fan and voltage indices from LM sensors (sensors)
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