To use the System Activity Report (SAR) to monitor system performance and potential problems using historical performance data
To use log files to monitor system performance and events
To configure and use logrotate to manage log files
To use systemd journals to monitor system events and performance
To configure and use Logwatch to provide a daily summary of log and journal entries for use in problem determination
Logs are your friend
Use the log files to help determine the source of problems and performance issues. They contain large amounts of data that ...