How to configure /var/log/messages in Ubuntu system log

1. Problem Description

Today I need to check the system log file, but I can't find the file /var/log/messages. Searching for information online, it says that you need to configure /etc/syslog.conf. Syslog uses a configurable, unified system registration program to accept log requests from anywhere in the system at any time, and then writes the log information to the corresponding file, mails it to a specific user, or directly sends it to the console as a message according to the pre-set settings in /etc/syslog.conf.

Okay, here comes the problem again. There is still no /etc/syslog.conf in the system. After some searching, the conclusion is: the corresponding ones in Ubuntu should be /etc/rsyslog.conf and rsyslogd.

2. Solution

For an explanation of the functions of the syslog.conf file and the files under syslog.d, please refer to the following article:

https://www.jb51.net/article/164470.htm

By checking the rsyslog.conf file, we found that all configuration files are in the /etc/rsyslog.d/ folder.

# /etc/rsyslog.conf Configuration file for rsyslog. 
# 
# For more information see 
# /usr/share/doc/rsyslog-doc/html/rsyslog_conf.html 
# 
# Default logging rules can be found in /etc/rsyslog.d/50-default.conf 
… … 
# 
# Include all config files in /etc/rsyslog.d/ 
# 
$IncludeConfig /etc/rsyslog.d/*.conf

Use vim to open the /etc/rsyslog.d/50-default.conf file and add a line as follows:

*.info;mail.none;authpriv.none;cron.none /var/log/messages 

Restart the system and check the system log again, and you will find that everything is OK! ! ! ^_^

The above method of configuring /var/log/messages in Ubuntu system log is all I want to share with you. I hope it can give you a reference. I also hope that you will support 123WORDPRESS.COM.