安裝Let’s Encrypt
安裝非常簡單直接克隆就可以了
# git clone https://github.com.cnpmjs.org/letsencrypt/letsencrypt
# cd letsencrypt/
# ll
生成通配符證書
期間需要根據提示設置DNS TXT記錄,用作你對判斷你是否擁有域名使用權
./certbot-auto certonly -d *.zisefeizhu.com --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory
| 參數 | 說明 |
|---|---|
| certonly | 表示安裝模式，Certbot 有安裝模式和驗證模式兩種類型的插件 |
| –manual | 表示手動安裝插件，Certbot 有很多插件，不同的插件都可以申請證書，用戶可以根據需要自行選擇 |
| -d | 為那些主機申請證書，如果是通配符，輸入 *.leixf.cn（可以替換為你自己的一級域名） |
| –preferred-challenges dns | 使用 DNS 方式校驗域名所有權 |
| –server | Let’s Encrypt ACME v2 版本使用的服務器不同於 v1 版本，需要顯示指定 |
輸出結果
作為依賴被升級:
cpp.x86_64 0:4.8.5-44.el7 e2fsprogs.x86_64 0:1.42.9-19.el7 e2fsprogs-libs.x86_64 0:1.42.9-19.el7 krb5-libs.x86_64 0:1.15.1-50.el7 libcom_err.x86_64 0:1.42.9-19.el7
libffi.x86_64 0:3.0.13-19.el7 libgcc.x86_64 0:4.8.5-44.el7 libgomp.x86_64 0:4.8.5-44.el7 libselinux.x86_64 0:2.5-15.el7 libselinux-python.x86_64 0:2.5-15.el7
libselinux-utils.x86_64 0:2.5-15.el7 libss.x86_64 0:1.42.9-19.el7 openssl-libs.x86_64 1:1.0.2k-19.el7 python.x86_64 0:2.7.5-90.el7 python-libs.x86_64 0:2.7.5-90.el7
完畢！
Creating virtual environment...
Installing Python packages...
Installation succeeded.
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)
接下來需要按要求輸入指令
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): linkun@zisefeizhu.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, once your first certificate is successfully issued, 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 our work encrypting the web,
EFF news, campaigns, and ways to support digital freedom.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(Y)es/(N)o: N
Obtaining a new certificate
Performing the following challenges:
dns-01 challenge for zisefeizhu.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
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Please deploy a DNS TXT record under the name
_acme-challenge.zisefeizhu.com with the following value:
JM-xxxxxxxxxxxxxxxEQ
Before continuing, verify the record is deployed.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue
這里有幾個需交互的提示
- 是否同意 Let’s Encrypt 協議要求=>需要同意
- 是否分享你的郵箱
- 詢問是否對域名和機器（IP）進行綁定=>需要同意
需要注意的地方：
Please deploy a DNS TXT record under the name
_acme-challenge.zisefeizhu.com with the following value:
JM-xxxxxxxxxxxxxxxEQ
Before continuing, verify the record is deployed.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue
要求配置 DNS TXT 記錄，從而校驗域名所有權，也就是判斷證書申請者是否有域名的所有權。
上面輸出要求給 _acme-challenge.leixf.cn 配置一條 TXT 記錄，在沒有確認 TXT 記錄生效之前不要回車執行。
我用的是阿里雲的域名服務器，控制台具體操作如下所示：
雲解析DNS --> 域名解析 --> 解析設置 --> 記錄類型(TXT) --> 主機記錄(_acme-challenge) --> 解析線路(默認) --> 記錄值(JM-pzw0Cf7GKfqu_2tyIA-rmfWptxabEFPEP5gSlLEQ)
確認生效
dig _acme-challenge.zisefeizhu.com
; <<>> DiG 9.10.6 <<>> _acme-challenge.zisefeizhu.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4648
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;_acme-challenge.zisefeizhu.com. IN A
;; AUTHORITY SECTION:
zisefeizhu.com. 600 IN SOA dns25.hichina.com. hostmaster.hichina.com. 2019121120 3600 1200 86400 360
;; Query time: 265 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Mon Nov 23 10:51:21 CST 2020
;; MSG SIZE rcvd: 118
回車執行，輸出如下
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue
Waiting for verification...
Cleaning up challenges
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/zisefeizhu.com/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/zisefeizhu.com/privkey.pem
Your cert will expire on 2021-02-21. 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
看到這個界面內容的話，證書安裝成功了。
查看證書過期時間
# ./certbot-auto certificates
Certificate Name: zisefeizhu.com
Serial Number: 3041ed1be0505aaa20c9c192744c3ed28f3
Domains: *.zisefeizhu.com
Expiry Date: 2021-02-21 01:55:54+00:00 (VALID: 89 days)
Certificate Path: /etc/letsencrypt/live/zisefeizhu.com/fullchain.pem
Private Key Path: /etc/letsencrypt/live/zisefeizhu.com/privkey.pem
驗證
# yum install nginx
取消證書
可以使用一下命令取消剛剛生成的密匙，也就是以上的反操作：
certbot revoke --cert-path /etc/letsencrypt/live/leixf.cn/cert.pem
certbot delete --cert-name leixf.cn
證書路徑：
/etc/letsencrypt/live/zisefeizhu.com/
k8s使用
tls.crt --> /etc/letsencrypt/live/zisefeizhu.com/fullchain.pem
tls.key --> /etc/letsencrypt/live/zisefeizhu.com/privkey.pem
crt.sh
kubectl create secret tls zisefeizhu-cn-crt --key tls.key --cert tls.crt -n zisefeizhu
nginx-ingress.yaml
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
name: nginx-test
namespace: realihub
annotations:
kubernetes.io/ingress.class: "kong"
labels:
app: nginx-test
spec:
tls:
- hosts:
- "*.zisefeizhu.com"
secretName: hub-zisefeizhu-com-crt
rules:
- host: test.zisefeizhu.com
http:
paths:
- path: /
backend:
serviceName: nginx-test
servicePort: 80
參考文檔：
https://github.com/jaywcjlove/handbook/blob/master/CentOS/使用免費SSL證書讓網站支持HTTPS訪問.md