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certbot通配符证书

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【摘要】1.获取certbot-auto wget https://dl.eff.org/certbot-auto 2.生成证书 这里有个坑要注意，一定要加上 “-d 你的域名.cn” ，因为通配符证书 “*.你的域名.cn”并不支持基础域名“你的域名.cn”,用基础域名访问会报非安全的链接！这点很多其他文章并没有提及。 ./certbot-auto certonly -d *.你的域名….
1.获取certbot-auto

wget https://dl.eff.org/certbot-auto

2.生成证书

这里有个坑要注意，一定要加上 “-d 你的域名.cn” ，因为通配符证书 “*.你的域名.cn”并不支持基础域名“你的域名.cn”,用基础域名访问会报非安全的链接！这点很多其他文章并没有提及。

./certbot-auto certonly  -d *.你的域名.cn -d 你的域名.cn --agree-tos --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory

执行命令后输出如下：

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator manual, Installer None
Enter email address (used for urgent renewal and security notices) (Enter 'c' to
cancel): 这里填写你的邮箱地址


-------------------------------------------------------------------------------
NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.

Are you OK with your IP being logged?
-------------------------------------------------------------------------------
(Y)es/(N)o: y

之后这步很关键，certbot需要校验你的域名：

-------------------------------------------------------------------------------
Please deploy a DNS TXT record under the name
_acme-challenge.你的域名.cn with the following value:

jXH8nYZ2unEViIbW52LhIqxkg6i9mcwsRvhQ

Before continuing, verify the record is deployed.
-------------------------------------------------------------------------------
Press Enter to Continue

上面输出要求给 _acme-challenge.你的域名.cn 配置一条 TXT 记录，在没有确认 TXT 记录生效之前不要回车执行。

配置好域名的TXT记录等待生效后，按回车，通配符证书就生成了！

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/你的域名.cn/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/你的域名.cn/privkey.pem Your cert will expire on 2020-01-12. To obtain a new or tweaked version of this certificate in the future, simply run certbot-auto again. To non-interactively renew *all* of your certificates, run "certbot-auto renew"
 - If you like Certbot, please consider supporting our work by: Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate Donating to EFF: https://eff.org/donate-le
域名证书实际上是在/etc/letsencrypt/archive/你的域名.cn/目录下，live目录下是证书软连接。

apache httpd-ssl.conf的配置：

SSLCertificateFile "/etc/letsencrypt/archive/你的域名.cn/cert1.pem"
SSLCertificateKeyFile "/etc/letsencrypt/archive/你的域名.cn/privkey1.pem"

tomcat的配置：

先生成证书容器：

openssl pkcs12 -export -inkey privkey1.pem -in fullchain1.pem -name tomcat -out tomcat.p12
keytool -importkeystore -srckeystore ./tomcat.p12 -srcstoretype pkcs12 -destkeystore ./tomcat.jks

配置server.xml

配置完重启即生效。

关于续期通配符证书，可以参考：https://github.com/ywdblog/certbot-letencrypt-wildcardcertificates-alydns-au

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