Logrotate Config Builder

logrotate is the standard Linux tool for keeping log files from growing forever — it periodically renames, compresses, and prunes old logs based on a config in /etc/logrotate.d/, usually run once a day via cron/systemd timer. Pick your options below and get a ready-to-use config stanza, plus a plain-English explanation of exactly what each line does. Runs entirely in your browser.

Log file path

Rotate when

Keep how many rotated copies

Compress rotated logs (gzip) Delay compression by one cycle Don't error if the log is missing Skip rotation if the log is empty Use a date suffix instead of a number

Recreate the log file after rotation Copy-and-truncate instead (app never reopens its log file) Neither

Mode (optional)

Owner (optional)

Group (optional)

Post-rotate command (optional) Run it once for all matched files, not once per file

Generated config

Save this as its own file under /etc/logrotate.d/ (e.g. /etc/logrotate.d/myapp) — no need to touch /etc/logrotate.conf itself. Test it without waiting for cron: logrotate -d /etc/logrotate.d/myapp (dry run) or logrotate -f /etc/logrotate.d/myapp (force a real rotation now).

What each line does

💻 Show API usage examples (cURL)

curl -sS -X POST https://devops.majbase.com/logrotate-builder/api -H "Content-Type: application/json" -d '{"log_path":"/var/log/myapp/*.log","frequency":"daily","rotate_count":14,"compress":true,"delaycompress":true,"missingok":true,"notifempty":true,"create_enabled":true,"create_mode":"0640","create_owner":"www-data","create_group":"adm","postrotate_command":"systemctl reload nginx"}'

Returns {"config": "...", "explanation": [{"directive", "description"}, ...]}, or {"error": "..."}.