无需重启MySQL，能否修改logrotate中慢日志路径配置？

Great questions! Let's break these down clearly for you:

1. Can I modify the logrotate path without restarting MySQL? #

Absolutely! Here's the key context:

• Logrotate is a standalone system utility for managing log files—it’s completely separate from the MySQL service. It runs on its own cron schedule or when manually triggered, not tied to MySQL’s runtime state.
• Adjusting paths in logrotate’s configuration only changes how the utility locates and rotates logs. It has zero impact on MySQL’s running process.
• The only scenario where MySQL would need a restart is if you were modifying MySQL’s own core config (like updating slow_query_log_file in my.cnf), but that’s a distinct change from tweaking logrotate’s settings.

2. Can I update the slow log path in /etc/logrotate.d/mysql without restarting MySQL? #

100% yes—this follows the same logic as the first question:

• /etc/logrotate.d/mysql is logrotate’s dedicated config file for MySQL logs. Editing this file just tells logrotate where to find your slow log for rotation; it doesn’t interfere with MySQL’s operation at all.
• After making the edit, you can validate the configuration works safely without touching MySQL by running:

  # Debug mode: check for config errors without rotating logs
  logrotate -d /etc/logrotate.d/mysql
  # Force rotation to test (optional, won't restart MySQL)
  logrotate -f /etc/logrotate.d/mysql
  

• MySQL will keep writing to the slow log normally throughout this process—no downtime or service restart is needed.

内容的提问来源于stack exchange，提问作者coding99