Posts
How to Install OpenClaw Node Mode and Connect Remote Infrastructure
This post explains how to connect a remote server to a gateway using OpenClaw node mode. It covers the infrastructure control flow from installation, run verification, device approval, to systemd …
How to Integrate Samsung SmartThings API - From CLI Installation to OAuth Authentication
A step-by-step guide covering CLI installation, OAuth app creation, Redirect URI configuration, token issuance, and device listing for Samsung SmartThings API integration.
Mac Office Activation Guide | Install LTSC with Volume License VL Serializer
A step-by-step guide to installing and activating Microsoft Office on Mac using a volume license. Covers LTSC installer selection, VL Serializer application, and activation verification.
How to Issue a Free SSL Certificate on Synology DSM | Automatic Let’s Encrypt Renewal with acme.sh + Cloudflare DNS
A guide to issuing and auto-renewing a Let's Encrypt free SSL certificate on Synology DSM using acme.sh and Cloudflare DNS validation. Covers synology_dsm deploy-hook setup and troubleshooting 2FA and …
Terraform Practical Guide: Installation, plan/apply, AWS SSO & AssumeRole, State Backend
Covers Terraform installation through the basic flow of init, plan, and apply along with project structure. Explains the difference between AWS SSO and AssumeRole for credentials, the backend concept …
age Usage Guide: Encrypt Team Secret Files with Recipients and Decrypt with Private Keys
A guide to encrypting team secret files with public keys (recipients) and decrypting them with private keys using age. Covers key generation, recipients management, differences from GPG, and why …
Automating Claude Account Switching
This post summarizes how to quickly switch between Claude Code accounts without logging out. It covers an automation script that backs up and swaps macOS Keychain credentials using the security …
Resolving Naver Map Open API Authentication Failure (200): Changing ncpClientId to ncpKeyId
This post summarizes the cause of the Authentication Failed (200) error in the Naver Map Open API. It covers how console integration changed ncpClientId, govClientId, and finClientId to ncpKeyId, as …
Keeping the OpenVPN Client IP with a wg-easy WireGuard MASQUERADE Exception
This post explains why the request IP gets replaced with the VPN server IP due to MASQUERADE in wg-easy WireGuard, and how to fix it. By excluding a specific destination range from the iptables NAT …
Installing Docker and Docker Compose on Amazon Linux 2023 ARM64 EC2
This post covers installing Docker with dnf on Amazon Linux 2023 ARM64 (aarch64) EC2, including service activation and configuring docker group permissions. It also covers installing the Docker …
Setting Up OpenClaw A summary of installing OpenClaw (OpenClaw AI agent framework) locally and configuring the model, channel, and skills through onboard. Follow along with the Telegram bot authentication and security …
Clearing DNS Cache on Windows/Linux/macOS
When DNS changes fail to appear, flush the cache on Windows, Linux, and macOS with ipconfig, resolvectl, and mDNSResponder commands, and check TTL and browser caches to diagnose propagation delays …
Encrypting .env Files with GPG for Safe Commits
A guide to encrypting .env files with GPG to prevent secret exposure when you need to commit them to Git. Covers everything from .gitignore handling to gpg encrypt/decrypt commands and setting a …
Signing Git Commits with GPG
Learn how to apply GPG signatures to Git commits and earn the Verified badge - from installing GnuPG and generating or exporting keys to enabling automatic commit signing, verifying locally, …
Adding Multilingual Support to a Hugo Site
A summary of how to configure baseURL, sitemap, robots, JSON-LD, Open Graph, and meta description in a Hugo multilingual blog, and how to prevent duplicate-content issues with hreflang and canonical. …
Building a Blog with Hugo + GitHub
A walkthrough of building a personal blog using the Notion → Markdown conversion → Hugo build → GitHub Pages deployment flow. Follow along with Hugo installation, applying the m10c theme, automated …
Using a Custom Domain with GitHub Pages
This post summarizes the CNAME/A/AAAA record settings and the Pages Custom domain setup steps needed to connect a custom domain to GitHub Pages. It also covers the difference in how the CNAME file is …
Redis dump vs aof
Compare Redis persistence options (RDB/Dump, AOF, and Hybrid AOF) along with key redis.conf settings, BGSAVE/fsync/COW impacts, and selection criteria that balance data loss risk with restart time.
