很多理论知识这里就不提了，如果要深入了解建议先去了解下理论再来看会很容易看懂，下面直接操了。

环境：

CentOS release 6.8 (Final)

apache-2.4.25

1、查看现有apache是否有编译安装过ssl模块

/usr/local/apache/bin/apachectl-l

2、没有的话需要添加ssl模块，apache是以嵌入的方式添加模块的

/usr/local/apache/bin/apxs-i-c-a-L/usr/lib64/openssl/engines/lib-c*.c-lcrypto-lssl-ldl

/usr/local/apache/bin/apxs-c-imod_ssl.c

/usr/local/apache/bin/apxs-c-imod_ssl.lo

ll/usr/local/apache/modules|grepssl

3、开启ssl扩展功能

sed-i's/\#Includeconf\/extra\/httpd-ssl.conf/Includeconf\/extra\/httpd-ssl.conf/'/usr/local/apache/conf/httpd.conf

sed-n'140p'/usr/local/apache/conf/httpd.conf
LoadModulessl_modulemodules/mod_ssl.so

4、生成不可信任额证书，公钥加密，私钥解密。私钥加密，公钥解密

生成服务器私钥

opensslgenrsa-des3-outserver.key2048

生成服务器证书请求，并按照要求填写相关证书信息

opensslreq-new-keyserver.key-outserver.csr

签证：

opensslx509-req-days3650-inserver.csr-signkeyserver.key-outserver.crt

5、修改虚拟主机

sed-n'22,33p'/usr/local/apache/conf/extra/httpd-vhosts.conf
#
<VirtualHost*:443>
ServerAdmin1009422178@qq.com
DocumentRoot"/var/www/html"
ServerNamewww.www.fangqiweb.org
ServerAliaswww.fangqi.web.org
SSLEngineon
SSLCertificateFile/usr/local/apache/conf/server.crt
SSLCertificateKeyFile/usr/local/apache/conf/server.key
ErrorLog"logs/error/www-error_log"
CustomLog"|/usr/local/sbin/cronolog/service/apache/logs/access/www-%Y%m%d_log"combined
</VirtualHost>

6、添加监听端口

sed-i'53a\Listen443'httpd.conf

7、检查语法，重启apache

/usr/local/apache/bin/apachectl-t

/usr/local/apache/bin/apachectlrestart

8、测试访问

9、如果访问不了

防火墙是否允许了https通过

vhost配置文件是否配置错误

apache的主配置文件是否有错误，或者缺少vhost里的目录位置信息

apache的监听端口是否开启

apache是否有正确添加ssl模块

常见错误：

/usr/local/apache/bin/apachectl -t

httpd: Syntax error on line 141 of /usr/local/apache-2.4.25/conf/httpd.conf: Cannot load modules/mod_ssl.so into server: /usr/local/apache-2.4.25/modules/mod_ssl.so: undefined symbol: ssl_cmd_SSLPassPhraseDialog

解决：

/usr/local/apache/bin/apxs -a -i -c -L /usr/lib64/openssl/engines/lib -c *.c -lcrypto -lssl -ldl