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cheat-sheet.md

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+# ⚡ My Cloud Hub: Daily Cheat Sheet
+
+## 🚀 Dashboard Updates
+Run this after pushing changes from your local PC to Gitea.
+
+# Using the alias we created
+`updatedash`
+
+# Or manually:
+`cd /opt/docker/dashboard && ./update-dash.sh`
+
+## 🐳 Docker Maintenance
+Essential commands for managing your container stack.
+
+# View all running containers and their health
+`docker ps`
+
+# Restart a specific service (e.g., memos)
+`cd /opt/docker/memos && docker compose restart`
+
+# View live logs for a service to troubleshoot
+`docker compose logs -f [service_name]`
+
+# Clean up unused images/volumes (Run this if disk gets full)
+`docker system prune -a --volumes`
+
+## 🐘 Database (Postgres) Operations
+Quick commands for interacting with your Universal DB.
+
+# Access the Postgres CLI as the superuser
+`docker exec -it global_postgres psql -U postgres`
+```sql
+# SQL Commands (run these inside psql):
+# \l                                  -- List all databases
+# \du                                 -- List all users/roles
+# SELECT datname, pg_size_pretty(pg_database_size(datname)) FROM pg_database;
+```
+
+## ☁️ Backup & Cloud Storage
+Manual triggers and verification for your S3 backups.
+
+# Run a manual backup immediately
+`/opt/docker/backups/backup-homelab.sh`
+
+# List files in your Linode Object Storage bucket
+`rclone ls linode-s3:davisdre-backups-chicago`
+
+# Check the backup log for errors
+`tail -n 20 /opt/docker/backups/backup.log`
+
+## 🖥️ System Health & Monitoring
+Keep an eye on that 2GB RAM limit and swap space.
+
+# The 'Gold Standard' for real-time monitoring
+`htop`
+
+# Check disk space usage
+`df -h`
+
+# Check swap utilization specifically
+`swapon --show`
+
+## 🛠️ Infrastructure SOP: Adding a New App
+1. Update global-db/compose.yaml environment list.
+2. Manually provision the DB on the live instance:
+```bash
+docker exec -it global_postgres psql -U postgres -c "CREATE DATABASE app_name;"
+docker exec -it global_postgres psql -U postgres -c "CREATE USER app_name WITH PASSWORD 'my-custom-password';"
+docker exec -it global_postgres psql -U postgres -c "GRANT ALL PRIVILEGES ON DATABASE app_name TO app_name;"
+docker exec -it global_postgres psql -U postgres -c "ALTER DATABASE app_name OWNER TO app_name;"
+```