# Single Bench

This setup starts traefik service as part of single docker-compose project. It is quick to get started locally or on production for a single server with single deployment.

This is not suitable when multiple services are installed on cluster with shared proxy/router, database, cache etc.

Make sure you've cloned this repository and switch to the directory before executing following commands.

## Setup Environment Variables

Copy the example docker environment file to `.env`:

For local setup

```sh
cp env-local .env
```

For production

```sh
cp env-production .env

```

To get started, copy the existing `env-local` or `env-production` file to `.env`. By default, the file will contain the following variables:

- `ERPNEXT_VERSION=edge`
    - In this case, `edge` corresponds to `develop`. To setup any other version, you may use the branch name or version specific tags. (eg. version-12, v11.1.15, v11).
- `FRAPPE_VERSION=edge`
    - In this case, `edge` corresponds to `develop`. To setup any other version, you may use the branch name or version specific tags. (eg. version-12, v11.1.15, v11).
- `MYSQL_ROOT_PASSWORD=admin`
    - Bootstraps a MariaDB container with this value set as the root password. If a managed MariaDB instance is used, there is no need to set the password here.
- `MARIADB_HOST=mariadb`
    - Sets the hostname to `mariadb`. This is required if the database is managed by the containerized MariaDB instance.
    - In case of a separately managed database setups, set the value to the database's hostname/IP/domain.
- `SITE_NAME=erp.example.com`
    - Creates this site after starting all services and installs ERPNext. Site name is domain name that resolves. e.g. `erp.example.com` or `mysite.localhost`
- ``SITES=`erp.example.com` ``
    - List of sites that are part of the deployment "bench" Each site is separated by a comma(,) and quoted in backtick (`). By default site created by ``SITE_NAME`` variable is added here.
    - If LetsEncrypt is being setup, make sure that the DNS for all the site's domains correctly point to the current instance.
- `LETSENCRYPT_EMAIL=email@example.com`
    - Email for LetsEncrypt expiry notification. This is only required if you are setting up LetsEncrypt.

Notes:

- `AUTO_MIGRATE` variable is set to `1` by default. It checks if there is semver bump or git hash change in case of develop branch and automatically migrates the sites on container start up.
- It is good practice to use image tag for specific version instead of latest. e.g `frappe-socketio:v12.5.1`, `erpnext-nginx:v12.7.1`.

### HTTP to HTTPS redirection

> Recommended only for **production**

If HTTPS redirection is required, add the following labels block to the **traefik** service/container. This will route any HTTP traffic to HTTPS. (e.g any request going to `http://ernext.example.com` will be redirected to `https://erpnext.example.com`)

```yaml
    # ...
    labels:
      # enable traefik
      - "traefik.enable=true"
      # global redirect to https
      - "traefik.http.routers.http-catchall.rule=hostregexp(`{host:.+}`)"
      - "traefik.http.routers.http-catchall.entrypoints=web"
      - "traefik.http.routers.http-catchall.middlewares=redirect-to-https"

      # middleware redirect
      - "traefik.http.middlewares.redirect-to-https.redirectscheme.scheme=https"
    # ...
```

## Start containers

Execute the following command:

```sh
docker-compose --project-name <project-name> up -d
```

Make sure to replace `<project-name>` with the desired name you wish to set for the project.

Notes:

- The local deployment is for testing and REST API development purpose only
- A complete development environment is available [here](../development)
- The site names are limited to patterns matching \*.localhost by default
- Additional site name patterns can be added by editing /etc/hosts of your host machine

## Docker containers

The docker-compose file contains following services:

* traefik: manages letsencrypt
    * volume: cert-vol
* redis-cache: cache store
    * volume: redis-cache-vol
* redis-queue: used by workers
    * volume: redis-queue-vol
* redis-socketio: used by socketio service
    * volume: redis-socketio-vol
* mariadb: main database
    * volume: mariadb-vol
* erpnext-nginx: serves static assets and proxies web request to the appropriate container, allowing to offer all services on the same port.
    * volume: assets-vol and sites-vol
* erpnext-python: main application code
    * volume: sites-vol and sites-vol
* frappe-socketio: enables realtime communication to the user interface through websockets
    * volume: sites-vol
* erpnext-worker-default: background runner
    * volume: sites-vol
* erpnext-worker-short: background runner for short-running jobs
    * volume: sites-vol
* erpnext-worker-long: background runner for long-running jobs
    * volume: sites-vol
* erpnext-schedule
    * volume: sites-vol
* site-creator: run once container to create new site.
    * volume: sites-vol

## Updating and Migrating Sites

Switch to the root of the `frappe_docker` directory before running the following commands:

```sh
# Update environment variables ERPNEXT_VERSION and FRAPPE_VERSION
nano .env

# Pull new images
docker-compose pull

# Restart containers
docker-compose --project-name <project-name> up -d
```