如何使用Node.js和Redis在多个集群中只运行一次flushall？

const redis = require('redis');
const client = redis.createClient({host: 'your_redis_host', port: 'your_redis_port'});

function acquireLock(lockName, callback) {
  client.setnx(lockName, 'locked', (err, result) => {
    if (err) {
      callback(err);
      return;
    }
    if (result === 1) {
      // 成功获取到锁
      callback(null, true);
    } else {
      // 未能获取到锁
      callback(null, false);
    }
  });
}

function releaseLock(lockName, callback) {
  client.del(lockName, (err, result) => {
    if (err) {
      callback(err);
      return;
    }
    callback(null, result === 1);
  });
}

const lockName = 'flushall_lock';

acquireLock(lockName, (err, acquired) => {
  if (err) {
    console.error('Failed to acquire lock:', err);
    return;
  }
  if (acquired) {
    // 获取到锁，执行flushall操作
    client.flushall((err, result) => {
      if (err) {
        console.error('Failed to flushall:', err);
        return;
      }
      console.log('flushall executed successfully');
      // 释放锁
      releaseLock(lockName, (err, released) => {
        if (err) {
          console.error('Failed to release lock:', err);
          return;
        }
        if (released) {
          console.log('Lock released successfully');
        } else {
          console.log('Failed to release lock');
        }
      });
    });
  } else {
    console.log('Another instance is already running flushall');
  }
});