使用shell脚本来定时清理MySQL数据库中的relay log
时间: 2023-05-16 14:07:20 浏览: 61
可以使用以下的shell脚本来定时清理MySQL数据库中的relay log:
```
#!/bin/bash
# Set the path to the MySQL bin directory
MYSQL_BIN_DIR="/usr/local/mysql/bin"
# Set the path to the MySQL data directory
MYSQL_DATA_DIR="/var/lib/mysql"
# Set the number of days to keep relay logs
DAYS_TO_KEEP=7
# Get the current date
CURRENT_DATE=$(date +%Y-%m-%d)
# Calculate the date to delete relay logs before
DELETE_DATE=$(date -d "$DAYS_TO_KEEP days ago" +%Y-%m-%d)
# Stop the MySQL server
$MYSQL_BIN_DIR/mysqladmin -u root -p shutdown
# Delete the relay logs
find $MYSQL_DATA_DIR -name 'mysql-relay-bin.*' -type f -mtime +$DAYS_TO_KEEP -exec rm {} \;
# Start the MySQL server
$MYSQL_BIN_DIR/mysqld_safe --user=mysql &
echo "Relay logs before $DELETE_DATE have been deleted."
```
这个脚本会停止MySQL服务器,然后删除指定日期之前的relay log文件,最后重新启动MySQL服务器。可以将这个脚本添加到cron任务中,以定期执行清理操作。