ulimit -a
sysctl net.core.somaxconn
sysctl -w net.core.somaxconn=65535
mysqladmin flush-hosts
<body>
<div id="container">
<h1>A Database Error Occurred</h1>
<p>Unable to connect to your database server using the provided settings.</p><p>Filename: core/Loader.php</p><p>Line Number: 346</p> </div>
</body>
mysql> set GLOBAL max_connections=2000 # 加链接数 ，修改密码：确保各个相同账号的不同host密码一致
sysctl -w net.core.somaxconn=65535
原文：http://www.cnblogs.com/longzhu/p/5766008.html
