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Asterisk Troubleshooting and Debugging

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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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Last modified: March 12, 2019