How to Setup Rsyslog Remote Logging on Linux (Central Log Server)

Every Linux distribution have some kind of logging mechanism that
records all the system activities. A while back we provided a list of 20 log files
that are stored under /var/log that you might be helpful during
troubleshooting. These logs are very critical for sysadmin
for troubleshooting purpose.

The following are the three common methods to log a message:

1. Logging on the same server: Messages get written into the local hard drive/local database
2. Logging on a remote server: Many systems forward their logs over the
   network to a central log server. On the central log server, the
   messages from various systems are written to the local hard
   drive/database.
3. Relay logging: Branch ‘A’ and Branch ‘B’ logs the messages on 2
   different servers. These server in-turn logs the message to the ‘Head
   Office’.

Rsyslog is the default logging program on several Linux distributions
including Debian and Red Hat based systems. Apart from implementing the
syslog protocol, rsyslog adds additional features such as content-based filtering. This also uses TCP for transporting, and provides lot of configuration options.

This article explains how to implement the method 2 mentioned above.
i.e This explains how to setup a central logging server, and send logs
from individual servers to the central logging server.

This setup will help you to analyze the log files of all the servers in your infrastructure from a central log server.

Follow Link to read more.: goo.gl/iQ2fQ

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