Keep It Simple, Stupid

hongy19’s blog

move dovecot, opensmtpd, nginx from Archlinux to Ubuntu


I plan to move Archlinux at vultr to Ubuntu at Tencent.

  • firewall at Tencent,

    • no need to convert iptables to ufw since Tencent cloud has firewall
    • “在轻量数据库中，支持配置防火墙规则来控制访问权限，进行网络隔离以增强安全性。如果不配置防火墙规则，则表示不限制访问数据库的来源，未经授权的访问也可连接数据库。如果配置防火墙规则，限制了来源、协议以及端口，例如：配置来源为172.1.4.12、协议为TCP、端口为45，访问策略为允许，则表示仅允许来源为172.1.4.12，来自 TCP 协议且端口号为45的应用访问轻量数据库。”
    • open Tencent firewall port: 80, 443; 25,465,587; 993
    • Tencent not support send smtp email but it is Ok to receive email, see link

  • letsencrypt;

    • sudo tar -cpzvf letsencrypt_archive.tar.gz -C /etc letsencrypt
    • “-C /etc”: Change directory to /etc first (so the archive contains letsencrypt/ instead of full /etc/letsencrypt/ path)
    • sudo tar -xzvpf letsencrypt_archive.tar.gz -C /etc
    • sudo apt install certbot python3-certbot-nginx
    • dpkg -L certbot
    • sudo vim /usr/lib/systemd/system/certbot.service
    • add “ExecStartPost=/bin/systemctl reload nginx.service ; /bin/systemctl restart smtpd ; /bin/systemctl restart dovecot” and sudo systemctl daemon-reload

  • nginx

    …
Read more ⟶

Openclaw installation and configuration


 

  • openclaw:
    • 2026.3.24 change plugin interface and many old plugin doesn’t work
    • openclaw update
  • Weibo official plugin:
    • get appID and appSecret from 微博小龙虾
  • dingtalk-connector for 钉钉:
    • follow guideline.
    • get useID from 钉钉管理后台
    • get groupid from “openclaw logs”, @ robot at group and get following logs
      • 2026-03-26T11:20:54.327Z warn [DingTalk:__default__] 群聊被拦截: conversationId=cidxxxxxxxxxxxxxxxxxxxxxxxx= 不在 groupAllowFrom 白名单中
  • pinned version plugin upgrade
    • backup openclaw.json
    • openclaw plugins uninstall weibo-openclaw-plugin
    • remove weibo in openclaw.json
    • openclaw plugins install @wecode-ai/weibo-openclaw-plugin@2.0.1-beta.1
    • add weibo in openclaw.json
  • openclaw cron
    • openclaw cron add –name “每周记忆整理” –cron “0 7 * * 1” –tz “Asia/Shanghai” –session isolated –message “整理最近 7 天的日志，提炼到长期记忆” –announce –channel weibo –to “1000000009”
  • openclaw logs
    • timestamp is UTC by default, openclaw logs –local-time

 "weibo": {
 "enabled": true,
 "appId": "11111111111",
 "appSecret": "786aaxxxxxxxxxxxxxxxxxxxxx522"
 },


 "dingtalk-connector": {
 "enabled": true,
 "clientId": "dingxxxxxxxxxxxxxxxxxxx",
 "clientSecret": "CDxXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXjA",
 "dmPolicy": "allowlist",
 "allowFrom": ["000000000000000000000000000003"],
 "groupPolicy": "allowlist",
 "groupAllowFrom": ["cidxxxxxxxxxxxxxxxxxxxxxxxx="],
 "requireMention": true
 }
…
Read more ⟶

epub bookmark update


  • rename sample.epub to sample.zip
  • unzip sample.zip
  • update OEBPS/toc.ncx
  • in the folder which include “OEBPS”, “META-INF” and “mimetype”. not the folder which include folder sample
  • zip -D -rX9 sample.epub * -x mimetype
…
Read more ⟶