Apache 上 PHP 的 OpenSSL 配置不起作用

Question

我需要 OpenSSL 在带有 PHP 的 Apache 2 Web 服务器上工作，以便将 Moodle 和 Mahara 与 SSO 结合使用。

服务器正在运行 Ubuntu 10.04.3，并且我已按照 此处所述启用了 SSL 软件包。我还按照这些步骤设置证书。手动创建它们效果很好。

然而，Mahara 认为 OpenSSL 的配置不正确：

无法生成新的 SSL 密钥。您确定这台机器上安装了 openssl 和 openssl 的 PHP 模块吗？

这是启动服务器后的 Apache error.log：

[Thu Aug 25 10:38:06 2011] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu Aug 25 10:38:06 2011] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu Aug 25 10:38:06 2011] [warn] Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)
PHP Deprecated:  Comments starting with '#' are deprecated in /etc/php5/apache2/conf.d/imap.ini on line 1 in Unknown on line 0
[Thu Aug 25 10:38:06 2011] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu Aug 25 10:38:06 2011] [warn] RSA server certificate is a CA certificate (BasicConstraints: CA == TRUE !?)
[Thu Aug 25 10:38:06 2011] [warn] Init: Name-based SSL virtual hosts only work for clients with TLS server name indication support (RFC 4366)
[Thu Aug 25 10:38:06 2011] [notice] Apache/2.2.14 (Ubuntu) mod_ssl/2.2.14 OpenSSL/0.9.8k configured -- resuming normal operations

这是我访问 Maharas 网络页面时得到的信息，它说找不到 OpenSSL：

[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] [WAR] 6d (api/xmlrpc/lib.php:1324) openssl_csr_new(): dn: add_entry_by_NID 17 -> Mahara for example.com (failed), referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] Call stack (most recent first):, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * log_message("openssl_csr_new(): dn: add_entry_by_NID 17 -> Maha...", 8, true, true, "/var/www/mahara/api/xmlrpc/lib.php", 1324) at /var/www/mahara/lib/errors.php:446, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * error(2, "openssl_csr_new(): dn: add_entry_by_NID 17 -> Maha...", "/var/www/mahara/api/xmlrpc/lib.php", 1324, array(size 11)) at Unknown:0, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * openssl_csr_new(array(size 7), resource(#22), array(size 1)) at /var/www/mahara/api/xmlrpc/lib.php:1324, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->generate_keypair() at /var/www/mahara/api/xmlrpc/lib.php:1238, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->get_keypair() at /var/www/mahara/api/xmlrpc/lib.php:1145, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->__construct() at /var/www/mahara/api/xmlrpc/lib.php:1131, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo::singleton() at /var/www/mahara/admin/site/networking.php:56, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] , referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] [WAR] 6d (api/xmlrpc/lib.php:1328) Could not generate a new SSL key. Are you sure that both openssl and the PHP module for openssl are installed on this machine?, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] Call stack (most recent first):, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->generate_keypair() at /var/www/mahara/api/xmlrpc/lib.php:1238, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->get_keypair() at /var/www/mahara/api/xmlrpc/lib.php:1145, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo->__construct() at /var/www/mahara/api/xmlrpc/lib.php:1131, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx]   * OpenSslRepo::singleton() at /var/www/mahara/admin/site/networking.php:56, referer: http://example.com/mahara/admin/
[Thu Aug 25 10:45:26 2011] [error] [client xx.xx.xx.xx] , referer: http://example.com/mahara/admin/

我不太明白。究竟出了什么问题？

编辑：只是为了澄清：问题似乎与 PHP 有关，Apache 似乎很好：Apache/2.2.14 (Ubuntu) mod_ssl/2.2.14 OpenSSL/0.9.8k 配置 -恢复正常运营