The rsyslogd daemon can maintain logfiles on Linux distribut

The rsyslogd daemon can maintain logfiles on Linux distributions.   Discuss how you would use the rsyslogd daemon to maintain a large number of log files.

Solution

Rsyslogd Daemon is used to log the system message on linux distribution. The Rsyslogd Daemon reads a socket and sends the socket message to a destination.

Since, maintaining individual log file is a cumbersome process hence centralize log management like Rsyslogd Daemon is used to store and manage all the logs at one place.

Rsyslog is the most popular daemon for centralizing log data because it’s installed by default in most common distributions of Linux.

Logs could be sent to a log server with ample storage to keep a copy for search, backup, and analysis.

One can centralize all the files in a directory or matching a wildcard pattern. The nxlog and syslog-ng daemons support both directories and wildcards (*).

Below mentioned are some of the best practices for application logging, especially in case of large number of log files.

Set a Standard Location for Log Files

Use A Standard Filename: Use a standard filename for the latest logs from your application. This makes it easy because you can monitor and tail a single file.

Append the Log File: Is the log file going to be overwritten after each application restart? If so, we recommend turning that off. After each restart the app should append to the log file. That way, you can always go back to the last log line before the restart.

Appending vs. Rotation of Log File: Log Management is much more easier in Rotation than Appending. Searching the log of a aprticular day/event is easier in a smaller file of that particular day or week, in compariosn with the larger appended file. Also, older logs could be deleted while rotation is used.

Retention of Log File: Based on business requirement, it needs to be decided that, how long one need to kaap log file stored.

Separate Disk Location for Log Files: If Log files are much in number, a separate disk could be used to store all the log files. It will help to manage and search the log details.