Contents
What are messages in var log?
a) /var/log/messages – Contains global system messages, including the messages that are logged during system startup. There are several things that are logged in /var/log/messages including mail, cron, daemon, kern, auth, etc.
What are the three basic contents for a log message?
Message components Such components include an originator process ID, a timestamp, and the hostname or IP address of the device.
What is log in Siem?
Log parsing in SIEM allows you to correlate data across systems and conduct analysis to understand each and every incident. Log Sources for SIEM: Log and event files leveraged by SIEM include logs from events that occur in an operating system, application, server, or other sources.
What are the different types of log files?
/var/log/maillog or var/log/mail.log: is for mail server logs, handy for postfix, smtpd, or email-related services info running on your server. /var/log/kern: keeps in Kernel logs and warning info. Also useful to fix problems with custom kernels. /var/log/dmesg: a repository for device driver messages.
Is there a var log file in Ubuntu?
The /var/log/messages file doesn’t exist anymore on some distributions, most notably Ubuntu. Instead, the /var/log/syslog file is used.
Where do the messages go in a Linux log file?
Shows general messages and info regarding the system. Basically a data log of all activity throughout the global system. Know that everything that happens on Redhat-based systems, like CentOS or Rhel, will go in messages. Whereas for Ubuntu and other Debian systems, they go in Syslog.
Where are the error log files in Linux?
/var/log/httpd/: a directory containing error_log and access_log files of the Apache httpd daemon. Every error that httpd comes across is kept in the error_log file. Think of memory problems and other system-related errors. access_log logs all requests which come in via HTTP.