Time for action – debugging output in the console

To get more information on the terminal, we can use the option -d. The following is an example:

squid -d 2

We must specify an integer with the option -d to indicate the verbosity level. Let's have a look at the meaning of the different levels:

• Only critical and fatal errors are logged when level 0 (zero) is used.

• Level 1 includes the logging of important problems.

• Level 2 and higher includes the logging of informative details and other actions.

Higher levels result in more output on the terminal. A sample output on the terminal with level 2 would look similar to the following:

2010/07/20 21:40:53| Starting Squid Cache version 3.1.10 for i686-pc-linux-gnu...
2010/07/20 21:40:53| Process ID 15861
2010/07/20 21:40:53| With 1024 file descriptors available
2010/07/20 21:40:53| Initializing IP Cache...
2010/07/20 21:40:53| DNS Socket created at [::], FD 7
2010/07/20 21:40:53| Adding nameserver 192.168.36.222 from /etc/resolv.conf
2010/07/20 21:40:53...