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How to display a log file in real time?
As said, tail command is the most common solution to display a log file in real time. However, the command to display the file has two versions, as illustrated in the below examples. In the first example the command tail needs the -f argument to follow the content of a file. $ sudo tail -f /var/log/apache2/access.log
How is logicmonitor used to monitor log files?
LogicMonitor lets you monitor log files generated by your OS or applications such as MySQL, Tomcat, and so on. For example, you can monitor the MySQL slow query log so an alert will be triggered every time a slow query is logged in the log file. Note: A LogicMonitor Collector must have direct file access to all log files you would like to monitor.
How to watch and monitor log files in Linux?
Usually, the log files are rotated frequently on a Linux server by the logrotate utility. To watch log files that get rotated on a daily base you can use the -F flag to tail command. The tail -F will keep track if new log file being created and will start following the new file instead of the old file.
How does the log viewer work in Ubuntu?
The log viewer has a simple interface. The sidebar on the left shows a list of open log files, with the contents of the currently selected file displayed on the right. The log viewer not only displays but also monitors log files for changes.
How can I reduce the size of my log file?
Ensure the log storage can withstand the IOPS and low latency requirements for your transactional load. To reduce the physical size of a physical log file, you must shrink the log file. This is useful when you know that a transaction log file contains unused space.
How can I watch a log file rotate?
To watch log files that get rotated on a daily base you can use the -F flag to tail command. The tail -F will keep track if new log file being created and will start following the new file instead of the old file. However, by default, tail command will display the last 10 lines of a file.
How big does a request have to be for CloudFront to log?
If the total size of all request headers, including cookies, exceeds 20 KB, or if the URL exceeds 8192 bytes, CloudFront can’t parse the request completely and can’t log the request. Because the request isn’t logged, you won’t see in the log files the HTTP error status code returned.