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>3.3. Specifying the logging levels</H1
><P
>By default, when any of the EVMS interfaces is opened, the Engine logs the <TT
CLASS="filename"
>Default</TT
> level of messages into the <TT
CLASS="filename"
>/var/log/evmsEngine.log</TT
> file. However, if your system is having problems and you want to see more of what is happening, you can change the logging level to be higher; if you want fewer logging messages, you can change the logging level to be lower. To change the logging level, specify the <B
CLASS="command"
>-d</B
> parameter and the log level on the interface open call. The following examples show how to open the various interfaces with the highest logging level (<TT
CLASS="filename"
>everything</TT
>):</P
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><PRE
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>GUI: evmsgui -d everything</PRE
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>CLI: evms -d everything</PRE
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>&nbsp;</TD
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><P
>If you use the EVMS mailing list for help with a problem, providing to us
the log file that is created when you open one of the interfaces (as shown
in the previous commands) makes it easier for us to help you.
</P
></TD
></TR
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></DIV
><P
>The EVMS GUI lets you change the logging level during an Engine session. To do so, follow these steps:
<P
></P
><OL
TYPE="1"
><LI
><P
>Select <SPAN
CLASS="guimenu"
>Settings</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Log Level</SPAN
>-&gt;<SPAN
CLASS="guimenuitem"
>Engine</SPAN
>.
</P
></LI
><LI
><P
>Click the <SPAN
CLASS="guibutton"
>Level</SPAN
> you want.
</P
></LI
></OL
></P
><P
>The CLI command, <B
CLASS="command"
>probe</B
>, opens and closes the Engine, which causes a new log to start. The log that existed before the <B
CLASS="command"
>probe</B
> command was issued is renamed <TT
CLASS="filename"
>/var/log/evmsEngine.1.log</TT
> and the new log is named <TT
CLASS="filename"
>/var/log/evmsEngine.log</TT
>.</P
><P
>&#13;If you will be frequently using a different log level than the default,
you can specify the default logging level in
<TT
CLASS="filename"
>/etc/evms.conf</TT
> rather than
having to use the <B
CLASS="command"
>-d</B
> option when starting the user interface.
The "debug_level" option in the "engine" section sets the default
logging level for when the Engine is opened.
Using the <B
CLASS="command"
>-d</B
> option
during the command invocation overrides the setting in
<TT
CLASS="filename"
>/etc/evms.conf</TT
>.
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