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搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
...东西，所以把自己实战的步骤记录下来以备忘。我们看看如何一步一步搭建这个东东。
一、mongodb单实例。这种配置只适合简易开发时使用，生产使用不行，因为单节点挂掉整个数据业务全挂，如下图。
虽然不能生产使用，...
Quick easy way to migrate SQLite3 to MySQL? [closed]
Anyone know a quick easy way to migrate a SQLite3 database to MySQL?
17 Answers
17
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MacOSX homebrew mysql root password
For some reason MySQL stopped giving access for root. Uninstalled and reinstalled with Homebrew. Fresh install, fresh tables but when I enter
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LEGO EV3 机器人传感器面板 · App Inventor 2 中文网
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Button_Disconnect.Click 事件断开蓝牙连接、禁用定时器并重置屏幕标题。
代码逻辑：
当 Button_Disconnect.Click 时
调用 BluetoothClient1.Disconnect
设置 Clock1.TimerEnabled 为 false
设置 Screen1.Title 为 "Disconnected"
通信协议
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串口通信器使用指导 · App Inventor 2 中文网
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视频介绍了 App Inventor 2 串口组件的使用方法，以及如何利用手机串口与 Arduino 硬件进行文本通信。串口通信波特率：9600。
方法与错误
入口
作用
InitializeSerial() / OpenSeria...
Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
I have installed MySQL server and trying to connect to it, but getting the error:
18 Answers
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How to reset or change the MySQL root password?
How do I change the MySQL root password and username in ubuntu server? Do I need to stop the mysql service before setting any changes?
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How to convert all tables from MyISAM into InnoDB?
..._SCHEMA = 'your_database_name'
AND ENGINE = 'MyISAM'";
$rs = mysql_query($sql);
while($row = mysql_fetch_array($rs))
{
$tbl = $row[0];
$sql = "ALTER TABLE `$tbl` ENGINE=INNODB";
mysql_query($sql);
}
?>
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How to allow remote connection to mysql
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
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Most Pythonic way to provide global configuration variables in config.py? [closed]
...
How about just using the built-in types like this:
config = {
"mysql": {
"user": "root",
"pass": "secret",
"tables": {
"users": "tb_users"
}
# etc
}
}
You'd access the values as follows:
config["mysql"]["tables"]["users"]
If ...