Asterisk Troubleshooting and Debugging
The major configuration files are in /etc/asterisk
Several methods of debugging are available in Asterisk. Once you've connected
to the console, you can enable different levels of verbosity and debugging
output, as well as protocol packet tracing. We'll take a look at the various
options in this section.
One very useful ability of the console is to issue a
reload. This is done by:
CLI> reload
This command will re-parse the configuration files
and update the changes in most of the modules of Asterisk.
If you want to reload the dial plan after changes, without reloading all
of Asterisk's config, use the dialplan reload
Asterisk CLI command.
Either connect to your asterisk process with asterisk -r
or rasterisk and type in the command, or send the command
directly with:
asterisk -rx 'dialplan reload'
Connecting to the Console
To connect to the Asterisk console, you can either start the server in
the console directly (in which case you will not be able to exit out of
the console without killing the Asterisk process), or start Asterisk as
a daemon and then connect to a remote console.
To start the Asterisk process directly in the console, use the console
flag:
# /usr/sbin/asterisk -c
or
# asterisk -cvvvvv
which gives me a console connection with plenty of debugging information.
To connect to a remote Asterisk console, start the daemon first and then
connect with the -r flag:
# /usr/sbin/asterisk
# /usr/sbin/asterisk -r
or
# /usr/sbin/asterisk -rvvvvv
If you are having a problem with a specific module not loading, or a
module causing Asterisk to not load, start the Asterisk process with the
-vvvvvv flag and redirect output to a file so that you can analyze that
status of modules loading.
Enabling Verbosity and Debugging
Asterisk can output debugging information in the form of WARNING,
NOTICE, and ERROR messages. These messages will give you
information about your system, such as registrations, status, and progression
of calls, and various other useful bits of information. Note that WARNING
and NOTICE messages are not errors; however, ERROR messages
should be investigated. To enable various levels of verbosity, use set
verbose followed by a numerical value. Useful values range from 3 to
10. For example, to set the highest level of verbosity, use:
# set verbose 10
You can also enable core debugging messages with set debug followed
by a numerical value. To enable DEBUG output on the console, you
may need to enable it in the logger.conf
file by adding debug to the console => statement, as follows:
console => warning,notice,error,event,debug
Useful values for set debug range from 3 to 10. For example:
# set debug 10
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