n8n & rocketchat

apps/home-automation/n8n.md

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+# n8n
+
+n8n is a free and open node-based Workflow Automation Tool. It can be self-hosted, easily extended, and so also used with internal tools.
+
+---
+
+- [Homepage](https://n8n.io/)
+- [Github repo](https://github.com/n8n-io/n8n)
+- [Docs](https://docs.n8n.io/)
+
+
+## Setup
+Create 1 folder and 3 files in the same directory:
+- storage/
+- .env
+- init-data.sh
+- docker-compose.yml
+
+```sh
+touch .env init-data.sh docker-compose.yml
+mkdir storage
+
+chmod +x init-data.sh  # make the init-data.sh executable
+chmod 777 storage      # make sure the storage folder is writable
+```
+
+
+
+## .env
+```conf
+POSTGRES_USER=n8n
+POSTGRES_PASSWORD=n8n
+POSTGRES_DB=n8n
+
+POSTGRES_NON_ROOT_USER=n7n
+POSTGRES_NON_ROOT_PASSWORD=n7n
+```
+
+
+## init-data.sh
+```sh
+#!/bin/bash
+set -e;
+
+if [ -n "${POSTGRES_NON_ROOT_USER:-}" ] && [ -n "${POSTGRES_NON_ROOT_PASSWORD:-}" ]; then
+	psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+		CREATE USER ${POSTGRES_NON_ROOT_USER} WITH PASSWORD '${POSTGRES_NON_ROOT_PASSWORD}';
+		GRANT ALL PRIVILEGES ON DATABASE ${POSTGRES_DB} TO ${POSTGRES_NON_ROOT_USER};
+		GRANT CREATE ON SCHEMA public TO ${POSTGRES_NON_ROOT_USER};
+	EOSQL
+else
+	echo "SETUP INFO: No Environment variables given!"
+fi
+```
+
+
+## docker-compose.yml
+```yml
+---
+services:
+  postgres:
+    image: postgres:16
+    restart: unless-stopped
+    environment:
+      - POSTGRES_USER
+      - POSTGRES_PASSWORD
+      - POSTGRES_DB
+      - POSTGRES_NON_ROOT_USER
+      - POSTGRES_NON_ROOT_PASSWORD
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -h localhost -U ${POSTGRES_USER} -d ${POSTGRES_DB}']
+      interval: 5s
+      timeout: 5s
+      retries: 10
+    volumes:
+      - ./db:/var/lib/postgresql/data
+      - ./init-data.sh:/docker-entrypoint-initdb.d/init-data.sh
+
+  n8n:
+    image: docker.n8n.io/n8nio/n8n
+    restart: unless-stopped
+    environment:
+      - DB_TYPE=postgresdb
+      - DB_POSTGRESDB_HOST=postgres
+      - DB_POSTGRESDB_PORT=5432
+      - DB_POSTGRESDB_DATABASE=${POSTGRES_DB}
+      - DB_POSTGRESDB_USER=${POSTGRES_NON_ROOT_USER}
+      - DB_POSTGRESDB_PASSWORD=${POSTGRES_NON_ROOT_PASSWORD}
+      - N8N_EDITOR_BASE_URL=http://localhost:5678/
+      #- N8N_SECURE_COOKIE=false
+    links:
+      - postgres
+    depends_on:
+      postgres:
+        condition: service_healthy
+    ports:
+      - 5678:5678
+    volumes:
+      - ./storage:/home/node/.n8n
+```