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docker-swarm.md

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Prerequisites

IMPORTANT: All commands are executed on live server with public IP and DNS Configured.

Setup docker swarm

Follow dockerswarm.rocks guide to setup Docker swarm, Traefik and Portainer.

Use Portainer for rest of the guide

Create Config

Configs > Add Config > frappe-mariadb-config

[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci

[mysql]
default-character-set = utf8mb4

Create Secret

Secret > Add Secret > frappe-mariadb-root-password

longsecretpassword

Note down this password. It is only available in mariadb containers at location /run/secrets/frappe-mariadb-root-password later

Deploy MariaDB Replication

Stacks > Add Stacks > frappe-mariadb

version: "3.7"

services:
  mariadb-master:
    image: 'bitnami/mariadb:10.3'
    deploy:
      restart_policy:
        condition: on-failure
    configs:
      - source: frappe-mariadb-config
        target: /opt/bitnami/mariadb/conf/bitnami/my_custom.cnf
    networks:
      - frappe-network
    secrets:
      - frappe-mariadb-root-password
    volumes:
      - 'mariadb_master_data:/bitnami/mariadb'
    environment:
      - MARIADB_REPLICATION_MODE=master
      - MARIADB_REPLICATION_USER=repl_user
      - MARIADB_REPLICATION_PASSWORD_FILE=/run/secrets/frappe-mariadb-root-password
      - MARIADB_ROOT_PASSWORD_FILE=/run/secrets/frappe-mariadb-root-password

  mariadb-slave:
    image: 'bitnami/mariadb:10.3'
    deploy:
      restart_policy:
        condition: on-failure
    configs:
      - source: frappe-mariadb-config
        target: /opt/bitnami/mariadb/conf/bitnami/my_custom.cnf
    networks:
      - frappe-network
    secrets:
      - frappe-mariadb-root-password
    volumes:
      - 'mariadb_slave_data:/bitnami/mariadb'
    environment:
      - MARIADB_REPLICATION_MODE=slave
      - MARIADB_REPLICATION_USER=repl_user
      - MARIADB_REPLICATION_PASSWORD_FILE=/run/secrets/frappe-mariadb-root-password
      - MARIADB_MASTER_HOST=mariadb-master
      - MARIADB_MASTER_PORT_NUMBER=3306
      - MARIADB_MASTER_ROOT_PASSWORD_FILE=/run/secrets/frappe-mariadb-root-password

volumes:
  mariadb_master_data:
  mariadb_slave_data:

configs:
  frappe-mariadb-config:
    external: true

secrets:
  frappe-mariadb-root-password:
    external: true

networks:
  frappe-network:
    name: frappe-network
    attachable: true

Deploy Frappe/ERPNext

Stacks > Add Stacks > frappe-bench-v12

version: "3.7"

services:
  redis-cache:
    image: redis:latest
    volumes:
      - redis-cache-vol:/data
    deploy:
      restart_policy:
        condition: on-failure
    networks:
      - frappe-network

  redis-queue:
    image: redis:latest
    volumes:
      - redis-queue-vol:/data
    deploy:
      restart_policy:
        condition: on-failure
    networks:
      - frappe-network

  redis-socketio:
    image: redis:latest
    volumes:
      - redis-socketio-vol:/data
    deploy:
      restart_policy:
        condition: on-failure
    networks:
      - frappe-network

  erpnext-nginx:
    image: frappe/erpnext-nginx:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    environment:
      - FRAPPE_PY=erpnext-python
      - FRAPPE_PY_PORT=8000
      - FRAPPE_SOCKETIO=frappe-socketio
      - SOCKETIO_PORT=9000
    volumes:
      - sites-vol:/var/www/html/sites:rw
      - assets-vol:/assets:rw
    networks:
      - frappe-network
      - traefik-public
    deploy:
      restart_policy:
        condition: on-failure
      labels:
        - "traefik.docker.network=traefik-public"
        - "traefik.enable=true"
        - "traefik.constraint-label=traefik-public"
        - "traefik.http.routers.erpnext-nginx.rule=Host(${SITES?Variable SITES not set})"
        - "traefik.http.routers.erpnext-nginx.entrypoints=http"
        - "traefik.http.routers.erpnext-nginx.middlewares=https-redirect"
        - "traefik.http.routers.erpnext-nginx-https.rule=Host(${SITES?Variable SITES not set})"
        - "traefik.http.routers.erpnext-nginx-https.entrypoints=https"
        - "traefik.http.routers.erpnext-nginx-https.tls=true"
        - "traefik.http.routers.erpnext-nginx-https.tls.certresolver=le"
        - "traefik.http.services.erpnext-nginx.loadbalancer.server.port=80"

  erpnext-python:
    image: frappe/erpnext-worker:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    environment:
      - MARIADB_HOST=${MARIADB_HOST?Variable MARIADB_HOST not set}
      - REDIS_CACHE=redis-cache:6379
      - REDIS_QUEUE=redis-queue:6379
      - REDIS_SOCKETIO=redis-socketio:6379
      - SOCKETIO_PORT=9000
      - AUTO_MIGRATE=1
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
      - assets-vol:/home/frappe/frappe-bench/sites/assets:rw
    networks:
      - frappe-network

  frappe-socketio:
    image: frappe/frappe-socketio:${FRAPPE_VERSION?Variable FRAPPE_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
    networks:
      - frappe-network

  erpnext-worker-default:
    image: frappe/erpnext-worker:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    command: worker
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
    networks:
      - frappe-network

  erpnext-worker-short:
    image: frappe/erpnext-worker:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    command: worker
    environment:
      - WORKER_TYPE=short
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
    networks:
      - frappe-network

  erpnext-worker-long:
    image: frappe/erpnext-worker:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    command: worker
    environment:
      - WORKER_TYPE=long
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
    networks:
      - frappe-network

  frappe-schedule:
    image: frappe/erpnext-worker:${ERPNEXT_VERSION?Variable ERPNEXT_VERSION not set}
    deploy:
      restart_policy:
        condition: on-failure
    command: schedule
    volumes:
      - sites-vol:/home/frappe/frappe-bench/sites:rw
    networks:
      - frappe-network

volumes:
  redis-cache-vol:
  redis-queue-vol:
  redis-socketio-vol:
  assets-vol:
  sites-vol:

networks:
  traefik-public:
    external: true
  frappe-network:
    external: true

Use environment variables:

  • FRAPPE_VERSION variable to be set to desired version of ERPNext. e.g. 12.10.0
  • ERPNEXT_VERSION variable to be set to desired version of Frappe Framework. e.g. 12.7.0
  • MARIADB_HOST=frappe-mariadb_mariadb-master
  • SITES variable is list of sites in back tick and separated by comma
SITES=`site1.example.com`,`site2.example.com`

Create new site job

  1. Containers > Add Container > add-site1-example-com
  2. Select Image frappe/erpnext-worker:v12
  3. Set command as new
  4. Select network frappe-network
  5. Select Volume frappe-bench-v12_sites_vol and mount in container /home/frappe/frappe-bench/sites
  6. Env variables:
    • MYSQL_ROOT_PASSWORD=longsecretpassword
    • SITE_NAME=site1.example.com
  7. Start container

Migrate Sites job

  1. Containers > Add Container > migrate-sites
  2. Select Image frappe/erpnext-worker:v12
  3. Set command as migrate
  4. Select network frappe-network
  5. Select Volume frappe-bench-v12_sites_vol and mount in container /home/frappe/frappe-bench/sites
  6. Env variables:
    • MAINTENANCE_MODE=1
  7. Start container