markdown 在NameCheap中续订SSL

Posted 2021-05-05

步驟參考[網址](https://www.namecheap.com/support/knowledgebase/article.aspx/824/33/how-can-i-renew-an-ssl-certificate-for-a-domain-hosted-on-namecheap-servers)

1. 產 CSR & Key
`openssl req -new -newkey rsa:2048 -nodes -keyout server.key -out server.csr`

2. 驗證 CSR
`openssl req -text -noout -verify -in file.csr`

3. 把 CSR 放到 NameCheap 上面

4. 填完聯絡人資訊之後，開始用 DNS-Based 做 Domain Control Verification (DCV)

5. Namecheap 會打電話來, 準備接電話拿取 Verification Code

6. 填入 Verification Code

7. 下載 Certificate

https://support.plesk.com/hc/en-us/articles/115001177774-How-to-check-SSL-certificate-for-validity-
Check Date
` echo | openssl s_client -connect www.tappaysdk.com:443 -servername tappaysdk.com 2>/dev/null | openssl x509 -noout -dates`