PHP 到 MySQL SSL 连接 [英] PHP to MySQL SSL Connections

问题描述

我已经成功地在一个网络上的一台服务器上设置了启用 SSL 的 MySQL 安装，并且可以使用 SSL 与 Linux 命令行 mysql 客户端在不同网络的另一台服务器上连接到它，但是每次我尝试连接时(使用 PHP 5.3.3)我不断得到:

I have successfully setup an SSL enabled install of MySQL on one server on one network and can connect to it using SSL with the Linux command line mysql client on a different server on a different network, however every time I try to connect (using PHP 5.3.3) I keep getting:

警告:mysqli_real_connect():(HY000/2026):第 18 行/var/www/html/test.php 中的 SSL 连接错误

Warning: mysqli_real_connect(): (HY000/2026): SSL connection error in /var/www/html/test.php on line 18

我的PHP如下是我做错了吗?证书为 777(仅在测试时)并且相同的代码适用于不同用户的未加密连接(SSL 设置被注释掉，即 mysqli 绝对可以正常连接到数据库)

My PHP is as follows have I done something wrong? The certs are 777 (only while testing) and the same code works for a different user's un-encrypted connection (with the SSL setting commented out i.e. mysqli can definitely connect generally to the DB)

<?php

error_reporting(E_ALL);
ini_set("display_errors", "1");

$obj = mysqli_init();

mysqli_options($obj, MYSQLI_OPT_CONNECT_TIMEOUT, 5);

mysqli_ssl_set($obj,
               '/mysql-ssl-certs/server-key.pem',
               '/mysql-ssl-certs/server-cert.pem',
               '/mysql-ssl-certs/ca-cert.pem',
               NULL,
               NULL);

$link = mysqli_real_connect($obj, 'localhost', 'ssluser', 'some_password', 'test');

if (!$link)
{
    die('<br /><br />Connect Error (' . mysqli_connect_errno() . ') '.mysqli_connect_error());
}

echo 'Success... ' . mysqli_get_host_info($obj) . "
";

$obj->close();

?>

推荐答案

这里 PHP(和 mysqli_real_connect)是客户端而不是服务器.您正在使用 mysqli_ssl_set 配置它以进行客户端证书身份验证(并使用服务器密钥和证书).

Here PHP (and mysqli_real_connect) is the client not the server. You're configuring it with mysqli_ssl_set for client-certificate authentication (and using the server key and certificate).

我不确定您是如何配置 MySQL 服务器的，但配置的 (MySQL) 服务器部分中应该有类似的内容:

I'm not sure how you've configured your MySQL server, but there should be something like this in the (MySQL) server section of the configuration:

ssl-key=/mysql-ssl-certs/server-key.pem
ssl-cert=/mysql-ssl-certs/server-cert.pem
ssl-ca=/mysql-ssl-certs/ca-cert.pem

无论如何，这些都不属于客户端(只有 CA 证书，但绝对不是服务器的私钥).

These don't belong to the client side anyway (only the CA certificate does, but definitely not the server's private key).

完成此操作后，您可以尝试使用命令行客户端查看服务器是否配置正确:

Once you've done this, you can try to see if the server is configured properly using the command line client:

mysql --ssl-verify-server-cert --ssl-ca=/mysql-ssl-certs/ca-cert.pem --ssl -h hostname ...

或者这个(虽然验证服务器证书应该真正启用才能使 SSL/TLS 有用)

or perhaps this (although verify server cert should really be enabled for SSL/TLS to be useful)

mysql --ssl-ca=/mysql-ssl-certs/ca-cert.pem --ssl -h hostname ...

这至少应该在命令行上工作.

This should work at least on the command line.

然后，从 PHP 中，您有两个选择:

Then, from PHP, you get two options:

• 像您一样使用 mysqli_ssl_set，但将 $key 和 $cert 留空，除非您想使用客户端证书这确实应该与您的服务器证书不同.(我不记得这是否有效.)

• 可能更简单，完全省略 mysqli_ssl_set 并在全局 MySQL 客户端配置文件中配置它(PHP 应该能够获取它，可能 /etc/mysql/my.cnf，但这可能会因您的发行版而异):

• use mysqli_ssl_set like you've done, but leaving $key and $cert null, unless you want to use a client-certificate which really ought to be different from your server certificate. (I can't remember whether that works.)

• possibly easier, omit mysqli_ssl_set altogether and configure this in your global MySQL client configuration file (where PHP should be able to pick it up, possibly /etc/mysql/my.cnf, but this may vary depending on your distribution):

[client]
ssl-ca=/mysql-ssl-certs/ca-cert.pem

(这类似于服务器配置，但在客户端/在客户端部分.)

(This is similar to the server config, but on the client side/in the client section.)

对于授权部分(GRANT):

• REQUIRE SSL 只需要使用 SSL/TLS
• REQUIRE ISSUER、REQUIRE SUBJECT 和 REQUIRE X509 要求客户端提供客户端证书以与所需值进行比较(即您需要在客户端(配置或在 mysqli_ssl_set 内)使用 ssl-key 和 ssl-cert 的情况.

• REQUIRE SSL only requires the use of SSL/TLS
• REQUIRE ISSUER, REQUIRE SUBJECT and REQUIRE X509 require the client to present a client-certificate to compare to the required values (that's the case where you'd need to use ssl-key and ssl-cert on the client side (config or within mysqli_ssl_set).

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