1、向专业机构申请证书，或者使用openssl生成自签名证书，openssl生成证书参考以下步骤。
openssl生成证书参考https://blog.51cto.com/longlei/2120718
生成加密私钥
[root@localhost test]# openssl genrsa -out test.key 2048
Generating RSA private key, 2048 bit long modulus
....................................+++
...............+++
e is 65537 (0x10001)
[root@localhost test]#
生成证书签名请求（CSR），这里需要填写许多信息，如国家，省市，公司等
[root@localhost test]# openssl req -new -key test.key -out test.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:cn
State or Province Name (full name) []:bj
Locality Name (eg, city) [Default City]:bj
Organization Name (eg, company) [Default Company Ltd]:ll
Organizational Unit Name (eg, section) []:lz
Common Name (eg, your name or your server's hostname) []:www.test.com这里填域名
Email Address []:111@ddd
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:123456
An optional company name []:
[root@localhost test]# ls
test.csr test.key
生成类型为X509的自签名证书。有效期设置3650天，即有效期为10年
[root@localhost test]# openssl x509 -req -days 3650 -in test.csr -signkey test.key -out test.crt
Signature ok
subject=/C=cn/ST=bj/L=bj/O=ll/OU=lz/CN=www.test.com/emailAddress=111@ddd
Getting Private key
[root@localhost test]# ls
test.crt test.csr test.key
2、将crt和key转换为jks格式文件
可使用https://geshi.sslzhengshu.com/在线转换（如果是在权威机构申请的证书，建议在申请证书的官网转换）
3、使用IHS自带的工具将jks文件转换为kdb格式
参考https://blog.csdn.net/lavin1614/article/details/126141114
（1）启动IKeyMan工具
[root@localhost ~]# export DISPLAY=192.168.1.1:0.0
[root@localhost ~]# cd /opt/IBM/HTTPServer/bin/
[root@localhost bin]# ./ikeyman
（2）创建KDB文件
在打开的IBM 密钥管理工具中，点击创建新密钥数据库文件，密钥数据库类型选择CMS并选择密钥保存路径。
注意：请选中“将密码存储到文件”选项，此选项将把密码加密保存到扩展名为.sth的文件中。IHS启动时，会自动从该.sth文件中读取密码，如果不选择此项启动IHS时会报错
创建密钥库成功后，会在对应的目录下生成三个文件：
2、导入签署者证书
导入jks文件
输入密码确定后，将会弹出如下窗口，在新标签中输入证书域名或者别名，点击“应用”-“确定”，在个人证书中就可以看到对应的证书，点击“查看/编辑”，可将证书设置为缺省证书(默认证书)
安装部署证书
参考https://www.ibm.com/support/pages/guide-properly-setting-ssl-within-ibm-http-server#create
https://www.ibm.com/support/pages/node/72233
conf文件修改修改或者添加以下配置：
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule ibm_ssl_module modules/mod_ibm_ssl.so
Listen 443
<VirtualHost *:443>
SSLEnable
ServerName www.xxxxx.xxx
#Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
</VirtualHost>
KeyFile /u01/IBM/HTTPServer/conf/keydir/key.kdb
RewriteEngine on
RewriteCond %{SERVER_PORT} 80
RewriteRule ^.*$ https://%{SERVER_NAME}%{REQUEST_URI} [L,R]
可能会遇到的报错处理：
httpd: Syntax error on line 850 of /u01/IBM/HTTPServer/conf/httpd.conf: Cannot load modules/mod_ibm_ssl.so into server: /u01/IBM/HTTPServer/modules/mod_ibm_ssl.so: undefined symbol: ihs_socket_iol_push
该问题属于环境变量问题
参考https://www.cnblogs.com/qtong/p/13152462.html
[root@VM-24-5-centos bin]# ldd httpd
linux-vdso.so.1 => (0x00007ffe85d96000)
libpcre.so.0 => /lib64/libpcre.so.0 (0x00007f8b5b865000)
libaprutil-1.so.0 => /usr/local/apr-util/lib/libaprutil-1.so.0 (0x00007f8b5b63f000)
libexpat.so.1 => /lib64/libexpat.so.1 (0x00007f8b5b414000)
libapr-1.so.0 => /usr/local/apr/lib/libapr-1.so.0 (0x00007f8b5b1e1000)
librt.so.1 => /lib64/librt.so.1 (0x00007f8b5afd9000)
libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00007f8b5ada2000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f8b5ab86000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f8b5a982000)
libc.so.6 => /lib64/libc.so.6 (0x00007f8b5a5b4000)
libfreebl3.so => /lib64/libfreebl3.so (0x00007f8b5a3b1000)
/lib64/ld-linux-x86-64.so.2 (0x00007f8b5bac7000)
[root@VM-24-5-centos bin]# ll | grep env
-rwxr-xr-x 1 root root 2019 Nov 25 17:36 envvars
-rwxr-xr-x 1 root root 2019 Nov 25 17:36 envvars-std
-rwxr-xr-x 1 root root 1130 Nov 25 17:36 gsk_envvars
[root@VM-24-5-centos bin]# ./envvars
[root@VM-24-5-centos bin]# ./httpd -t -f /u01/IBM/HTTPServer/conf/httpd.conf
httpd: Syntax error on line 850 of /u01/IBM/HTTPServer/conf/httpd.conf: Cannot load modules/mod_ibm_ssl.so into server: /u01/IBM/HTTPServer/modules/mod_ibm_ssl.so: undefined symbol: ihs_socket_iol_push
[root@VM-24-5-centos bin]# cat envvars | grep LD_LIBRARY
if test "x$LD_LIBRARY_PATH" != "x"; then
LD_LIBRARY_PATH="/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/gsk8/lib64:$LD_LIBRARY_PATH:/u01/IBM/HTTPServer/modules"
LD_LIBRARY_PATH="/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/modules:/u01/IBM/HTTPServer/gsk8/lib64"
export LD_LIBRARY_PATH
[root@VM-24-5-centos bin]# echo x$LD_LIBRARY_PATH
x
[root@VM-24-5-centos bin]# echo $LD_LIBRARY_PATH
[root@VM-24-5-centos bin]# cat envvars | grep LD_LIBRARY
if test "x$LD_LIBRARY_PATH" != "x"; then
LD_LIBRARY_PATH="/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/gsk8/lib64:$LD_LIBRARY_PATH:/u01/IBM/HTTPServer/modules"
LD_LIBRARY_PATH="/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/modules:/u01/IBM/HTTPServer/gsk8/lib64"
export LD_LIBRARY_PATH
[root@VM-24-5-centos bin]# export LD_LIBRARY_PATH="/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/modules:/u01/IBM/HTTPServer/gsk8/lib64"
[root@VM-24-5-centos bin]# ./httpd -t -f /u01/IBM/HTTPServer/conf/httpd.conf
IBRARY_PATH=“/u01/IBM/HTTPServer/lib:/u01/IBM/HTTPServer/modules:/u01/IBM/HTTPServer/gsk8/lib64”
[root@VM-24-5-centos bin]# ./httpd -t -f /u01/IBM/HTTPServer/conf/httpd.conf
