写mongodb日志

Start a with verbose logging, with appending enabled, and with the following log file:

mongod -v --logpath /var/log/mongodb/server1.log --logappend

In a separate terminal, list the matching files:

ls /var/log/mongodb/server1.log*

For results, you get:

Rotate the log file using one of the following methods.

From the shell, issue the command from the admin database:

This is the only available method to rotate log files on Windows systems.

From the UNIX shell, rotate logs for a single process by issuing the following command:

From the UNIX shell, rotate logs for all processes on a machine by issuing the following command:

List the matching files again:

ls /var/log/mongodb/server1.log*

For results you get something similar to the following. The timestamps will be different.

server1.log server1.log.2011-11-24T23-30-00

The example results indicate a log rotation performed at exactly 11:30 pm on November 24th, 2011 UTC, which is the local time offset by the local time zone. The original log file is the one with the timestamp. The new log is server1.log file.

If you issue a second command an hour later, then an additional file would appear when listing matching files, as in the following example:

server1.log server1.log.2011-11-24T23-30-00 server1.log.2011-11-25T00-30-00

This operation does not modify the server1.log.2011-11-24T23-30-00 file created earlier, while server1.log.2011-11-25T00-30-00 is the previous server1.log file, renamed. server1.log is a new, empty file that receives all new log output.