快速配置Let's encrypt通配符证书

xiaoxiao2021-03-01  8

利用certbot工具配置Let’s encrypt通配符证书,所域名下所有的子域名都能方便的使用 https证书,而且完全免费。值得关注的是,Let’s encrypt通配符证书只是针对二级域名,并不能针对主域名,如*.hubinqiang.com和hubinqiang.com 被认为是两个域名,如果和我一样使用的是主域名,在申请的时候需要注意都要申请。

配置环境 操作系统:Ubuntu16.04 LTS 配置域名:hubinqiang.com,*.hubinqiang.com

步骤

获取Certbot # 下载 wget https://dl.eff.org/certbot-auto # 设为可执行权限 chmod u+x certbot-auto 申请证书 执行 ./certbot-auto certonly -d "域名1" -d "域名2" --manual --preferred-challenges dns-01 --server https://acme-v02.api.letsencrypt.org/directory

参数说明:

-certonly,表示安装模式,Certbot 有安装模式和验证模式两种类型的插件。-manual,表示手动安装插件,Certbot 有很多插件,不同的插件都可以申请证书,用户可以根据需要自行选择。-d,为哪些主机申请证书,如果是通配符,输入 *.hubinqiang.com(替换为自己的域名)。-preferred-challenges,使用 DNS 方式校验域名所有权。-server,Let’s Encrypt ACME v2 版本使用的服务器不同于 v1 版本,需要显示指定。

注意:将hubinqiang.com替换为自己的域名。可以通过多个-d 参数添加多个主机。

申请过程中需要如下确认:

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): hubinqiang@126.com ------------------------------------------------------------------------------- Please read the Terms of Service at https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must agree in order to register with the ACME server at https://acme-v02.api.letsencrypt.org/directory ------------------------------------------------------------------------------- (A)gree/(C)ancel: A ------------------------------------------------------------------------------- Would you be willing to share your email address with the Electronic Frontier Foundation, a founding partner of the Let's Encrypt project and the non-profit organization that develops Certbot? We'd like to send you email about EFF and our work to encrypt the web, protect its users and defend digital rights. ------------------------------------------------------------------------------- (Y)es/(N)o: Y Obtaining a new certificate Performing the following challenges: dns-01 challenge for hubinqiang.com dns-01 challenge for hubinqiang.com ------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------

在域名 DNS 解析中添加 TXT记录:

------------------------------------------------------------------------------- Please deploy a DNS TXT record under the name _acme-challenge.hubinqiang.com with the following value: kC-QHSWO1LdIeyIs7VQ66sTAyioISnfzIJU0bXgo-Z8 Before continuing, verify the record is deployed. ------------------------------------------------------------------------------- Press Enter to Continue ------------------------------------------------------------------------------- Please deploy a DNS TXT record under the name _acme-challenge.hubinqiang.com with the following value: 6XnGyee8W48QfRl61m_18aRs8rfvn4T8kKzQil0IYw4 Before continuing, verify the record is deployed. ------------------------------------------------------------------------------- Press Enter to Continue Waiting for verification... Cleaning up challenges

显示我两个主机的 TXT 记录有两条,根据要求分别在 DNS 解析中添加两条 TXT 记录,其中一条如下:

注意:若申请了多个主机,需要添加多个 TXT 记录。要求给 _acme-challenge.hubinqiang.com 配置 TXT 记录,在没有确认 TXT 记录生效之前不要回车执行。

确认生效后会有如下提示:

IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/hubinqiang.com/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/hubinqiang.com/privkey.pem Your cert will expire on 2018-08-12. 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" - Your account credentials have been saved in your Certbot configuration directory at /etc/letsencrypt. You should make a secure backup of this folder now. This configuration directory will also contain certificates and private keys obtained by Certbot so making regular backups of this folder is ideal. - 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

进入/etc/letsencrypt/live/hubinqiang.com/中可以看到几个文件,cert.pem、chain.pem、fullchain.pem、privkey.pem,说明已经成功获取证书和密钥。

配置证书 在 nginx 中配置的片段: server { server_name hubinqiang.com; listen 443 http2 ssl; ssl on; ssl_certificate /etc/letsencrypt/live/hubinqiang.com/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/hubinqiang.com/privkey.pem; ssl_trusted_certificate /etc/letsencrypt/live/hubinqiang.com/chain.pem;

重启 nginx 查看效果。

证书更新 Let’s encrypt 的免费证书默认有效期为 90 天,到期后如果要续期可以执行: certbot-auto renew

https://blog.csdn.net/qq_25417713/article/details/82907426

https://blog.csdn.net/wr410/article/details/79559369

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