Source: MySQL Joins

Source: CAN-SPAM Act of 2003 – Wikipedia

Basic certbot operation: https://certbot.eff.org/instructions?ws=nginx&os=snap Certbot plugin specific to hosting https://certbot-dns-linode.readthedocs.io/en/stable/ Source: Certbot Instructions | Certbot

Source: MySQL Query Profiling

Source: Tips for asking a good Structured Query Language (SQL) question – Meta Stack Overflow

Source: DKIM Signature Body Hash Not Verified, Result: “fail”

When building and maintaining a website, you’re bound to encounter some unexpected HTTP errors here and there. Problems like these are tough to avoid, and some are trickier to resolve…

原本的憑證快到期了，結果舊版的certbot不聽話。 renew一直失敗，本來只是想要稍作升級。結果突然發現可以申請 wildcard 憑證了!!!! 天大的好消息，那乾脆來做一點點的實驗好了 如果是一開始對於certbot還不知道的可以參考 【SSL 憑證】利用 certbot 自動更新 Let’s Encrypt 憑證 首先安裝最新版的certbot，這邊直接載下來編譯 如果不像是我用樹梅派來當server的話，就可以直接略過這步 採用官方網站的方式 apt or yum 抓下來 但我沒得選，載下來讓他跑python吧… wget https://dl.eff.org/certbot-auto chmod +x certbot-auto ./certbot-auto 會吃爆樹梅派的cpu，如果是server會好一點orz… 接著嘗試註冊wildcard憑證 ./certbot-auto run…

Steps to install JAVA based ElasticSearch on Ubuntu 20.04 or 18.04 LTS Linux and also the command to enable and start is service. Source: How to install Elasticsearch on Ubuntu…