Grading Checklist

• Uses du -sh /var/log/* to identify the largest log directories and files.
• Identifies the specific log file consuming the most space.
• Checks logrotate configuration for the application log and identifies the misconfiguration.
• Verifies logrotate execution: checks /var/lib/logrotate/status and cron logs.
• Explains the difference between copytruncate and the default rename/create rotation method.
• Identifies that the application does not reopen log files after rotation (needs copytruncate or postrotate signal).
• Provides immediate relief: truncate the log file or run logrotate manually.
• Warns about checking for deleted-but-open files with lsof +L1 before assuming disk space is freed.
• Recommends fixing the logrotate config and testing with logrotate -d.
• Suggests reducing log verbosity if the application is logging at DEBUG level.
• Mentions checking journalctl --disk-usage and setting journal size limits.
• Recommends setting up disk usage monitoring and alerting at lower thresholds (80%, 90%).