无法在Apache中安装SSL

Question

我的服务器是Ubuntu，正在运行Apache2 。 我正在使用apache指向加载在tomcat Web应用程序。 以下是我的000-default.conf文件。

<VirtualHost *:*>
    ProxyPreserveHost On

    # Servers to proxy the connection, or;
    # List of application servers:
    # Usage:
    # ProxyPass / http://[IP Addr.]:[port]/
    # ProxyPassReverse / http://[IP Addr.]:[port]/
    # Example:
    ProxyPass / http://0.0.0.0:8080/
    ProxyPassReverse / http://0.0.0.0:8080/

    ServerName localhost
</VirtualHost>

<VirtualHost *:443>

    SSL Engine On

    # Set the path to SSL certificate
    # Usage: SSLCertificateFile /path/to/cert.pem
    SSLCertificateFile /etc/apache2/ssl/STAR_myglukose_com.crt

    # Servers to proxy the connection, or;
    # List of application servers:
    # Usage:
    # ProxyPass / http://[IP Addr.]:[port]/
    # ProxyPassReverse / http://[IP Addr.]:[port]/
    # Example:
    ProxyPass / http://0.0.0.0:8080/
    ProxyPassReverse / http://0.0.0.0:8080/

    # Or, balance the load:
    # ProxyPass / balancer://balancer_cluster_name

</VirtualHost>

我指向Tomcat很好，但是问题出在SSL上。 为443创建虚拟主机后，我无法重新启动apache。 我收到一个错误。 它要求我引用journalct1 -xe 。 该文件如下。

Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]:  * Starting Apache httpd web server apache2
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]:  *
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]:  * The apache2 configtest failed.
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: Output of config test was:
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: [Tue Aug 01 16:45:20.638254 2017] [proxy_html:notice] [pid 27567] AH01425: I18n support in mod_proxy_html requires mod_xml2enc. Without it, non-ASCII characters in proxied pages are likely to display incorrectly. it, n
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: AH00526: Syntax error on line 19 of /etc/apache2/sites-enabled/000-default.conf:
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: Invalid command 'SSL', perhaps misspelled or defined by a module not included in the server configuration
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: Action 'configtest' failed.
Aug 01 16:45:20 ip-172-31-5-246 apache2[27556]: The Apache error log may have more information.
Aug 01 16:45:20 ip-172-31-5-246 systemd[1]: apache2.service: Control process exited, code=exited status=1
Aug 01 16:45:20 ip-172-31-5-246 sudo[27550]: pam_unix(sudo:session): session closed for user root
Aug 01 16:45:20 ip-172-31-5-246 systemd[1]: Failed to start LSB: Apache2 web server.
-- Subject: Unit apache2.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit apache2.service has failed.

我尝试了各种方法来解决此问题，包括将SSL Engine编写为SSLEngine ，执行sudo a2enmod ssl等，但是出现了相同的错误。

我该如何解决这个问题？

Answer 1

错误消息明确指出了问题所在：

AH00526: Syntax error on line 19 of /etc/apache2/sites-enabled/000-default.conf:
Invalid command 'SSL', perhaps misspelled or defined by a module not included in the server configuration

要解决此问题，请查看以下特定行：

SSL Engine On

并通过删除SSL和引擎之间的空间来修复它：

SSLEngine On