CentOS中的inotify(Linux内核特性)可以与其他服务协同工作,以实现实时监控文件系统事件并作出相应反应。以下是一些常见的用例和实现方法:
你可以使用inotifywait命令来监控文件或目录的变化,并在检测到变化时执行脚本。
示例:
#!/bin/bash
MONITOR_DIR="/path/to/monitor"
SCRIPT_PATH="/path/to/script.sh"
inotifywait -m -r -e modify,attrib,close_write,move,create,delete --format '%w%f' "${MONITOR_DIR}" |
while read FILE
do
echo "File changed: $FILE"
/path/to/script.sh "$FILE"
done
你可以将inotify与Web服务器(如Nginx或Apache)结合使用,通过WebSocket或其他实时通信协议将文件变化通知推送到前端。
示例:
const fs = require('fs');
const http = require('http');
const socketIo = require('socket.io');
const server = http.createServer();
const io = socketIo(server);
const watcher = fs.watch('/path/to/monitor', { recursive: true }, (eventType, filename) => {
io.emit('fileChange', { eventType, filename });
});
server.listen(3000, () => {
console.log('Server listening on port 3000');
});
你可以使用inotify监控文件变化,并将变化同步到数据库中。
示例:
import inotify.adapters
import pymysql
db = pymysql.connect(host="localhost", user="user", password="password", db="database")
cursor = db.cursor()
i = inotify.adapters.Inotify()
i.add_watch('/path/to/monitor')
for event in i.event_gen(yield_nones=False):
(_, type_names, path, filename) = event
if 'IN_MODIFY' in type_names:
with open(os.path.join(path, filename), 'r') as f:
data = f.read()
cursor.execute("INSERT INTO table_name (file_content) VALUES (%s)", (data,))
db.commit()
你可以使用inotify监控文件变化,并将事件发送到消息队列(如RabbitMQ或Kafka),然后由其他服务消费这些事件。
示例:
import pika
import inotify.adapters
connection = pika.BlockingConnection(pika.ConnectionParameters('localhost'))
channel = connection.channel()
channel.queue_declare(queue='file_change_queue')
i = inotify.adapters.Inotify()
i.add_watch('/path/to/monitor')
for event in i.event_gen(yield_nones=False):
(_, type_names, path, filename) = event
if 'IN_MODIFY' in type_names:
channel.basic_publish(exchange='', routing_key='file_change_queue', body=f"File changed: {filename}")
connection.close()
如果你使用Docker或Kubernetes,可以将inotify与这些工具结合使用,实现容器内文件变化的实时监控和响应。
示例:
version: '3'
services:
monitor:
image: your-monitor-image
volumes:
- /path/to/monitor:/path/to/monitor
command: ["inotifywait", "-m", "-r", "-e", "modify,attrib,close_write,move,create,delete", "--format", '%w%f', '/path/to/monitor']
通过这些方法,你可以将CentOS中的inotify与其他服务协同工作,实现各种实时监控和自动化任务。