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G3W-SUITE WebGIS

CI to Docker hub for main G3W-SUITE image. CI to Docker hub for dependencies image.

This repository contains scripts and recipes for deploy of the G3W-SUITE web-gis application with Docker and Docker compose .

Docker structure

Deploy

Follow steps to deploy G3W-SUITE on a Ubuntu Server (20.04)

Configuration

Create a file .env (or copy .env.example and rename it in .env) and place it in the main directory, the file will contain the database credentials (change <your password>) and other settings:

# External hostname, for docker internal network aliases
WEBGIS_PUBLIC_HOSTNAME=demo.g3wsuite.it/

# This volume is persistent and mounted by all
# containers as /shared-volume
WEBGIS_DOCKER_SHARED_VOLUME=/tmp/shared-volume-g3w-suite


# DB setup
G3WSUITE_POSTGRES_USER_LOCAL=g3wsuite
G3WSUITE_POSTGRES_PASS=<your_password>
G3WSUITE_POSTGRES_DBNAME=g3wsuite
G3WSUITE_POSTGRES_HOST=postgis
G3WSUITE_POSTGRES_PORT=5432


# QGIS Server env variables
# ----------------------------------------------------
PGSERVICEFILE=/pg_service/pg_service.conf

Run

docker-compose up -d

If all went well, G3W-SUITE run on http://localhost:8080

Login Page

G3W-SUITE with consumer image

G3W-SUITE use huey for bach processing (https://github.com/coleifer/huey), so if you want to use it, use docker-compose-consumer.yml file on deploy:

docker-compose -f docker-compose-consumer.yml up -d

Builds

Docker compose will download images from docker hub (https://hub.docker.com/u/g3wsuite), but is also possible build main image of G3W-SUITE and other docker-compose images.

G3W-SUITE

The main suite docker image can be built with:

docker build -f Dockerfile.g3wsuite.dockerfile -t g3wsuite/g3w-suite:dev --no-cache .

The image is build from https://github.com/g3w-suite/g3w-admin.git --branch dev and from a dependencies base image Dockerfile.g3wsuite-deps.ltr.dockerfile, the dependencies image can be built with:

docker build -f Dockerfile.g3wsuite-deps.ltr.dockerfile -t g3wsuite/g3w-suite-deps-ltr:dev --no-cache .

Usually is sufficient make build of main docker image g3wsuite/g3w-suite:dev, the build of dependence image g3wsuite/g3w-suite-deps-ltr:dev is done to update last QGIS LTR version.

Postgis

Postgis image can be built with:

docker build -f Dockerfile.postgis.dockerfile -t g3wsuite/postgis:11.0-2.5 .

The Docker hub name for this image is g3wsuite/postgis:11.0-2.5

Setups

PG_SERVICE

To use of PostgreSql Service, put your service setups into ./secrets/pg_service.conf file, the conf file will be mounted into docker container at runtime to PGSERVICEFILE path position.

HTTPS additional setup

To active https with LetsEncrypt just follow the following instructions:

  • move config/_nginx/django_ssl.conf to config/nginx/django_ssl.conf
  • check the domain name in the .env file and in config/nginx/django_ssl.conf
  • run: docker pull certbot/certbot
  • launch ./run_certbot.sh
  • activate 301 redirect into config/nginx/django.conf
  • restart compose
  • make sure the certs are renewed by adding a cron job with crontab -e and add the following line: 0 3 * * * /<path_to_your_docker_files>/run_certbot.sh
  • if you disabled HTTPS, you can move config/nginx/django_ssl.conf back to its original location now, and restart the Docker compose to finally enable HTTPS

Volumes

Data, projects, uploads and the database are stored in a shared mounted volume shared-volume, the volume should be on a persistent storage device and a backup policy must be enforced.

Currently, the volume is mounted in /tmp/shared-volume-g3wsuite-dev. In production environments it is encouraged to change this to a permanent location. This can be done by modifying the .env file.

First time setup

  • log into the application web administation panel using default credentials (admin/admin)
  • change the password for the admin user and for any other example user that may be present

Caching

Tile cache can be configured and cleared per-layer through the webgis admin panel and lasts forever until it is disabled or cleared.

Tip: enable cache on linestring and polygon layers.

Editing

Editing module is active by default, to avoid simultaneous feature editing by two or more users, the editing module works with a feature lock system. This locking system can remain active if users do not exit the editing state correctly, to avoid this it is advisable to activate a cron job on host machine that checks the features that have been locked for more than 4 hours and frees them:

0 */1 * * * docker exec -e DISPLAY=:99 g3w-suite-docker_g3w-suite_1 python3 /code/g3w-admin/manage.py check_features_locked

Front-end App

Set the environment variable

FRONTEND=True

This will set the front end app as the default app

Style customization

Templates can now be overridden by placing the overrides in the config/g3w-suite/overrides/templates, a Docker service restart is required to make the changes effective.

The logo is also overridden (through config/g3w-suite/settings_docker.py which is mounted as a volume), changes to the settings file require the Docker service to be restarted.

A custom CSS is added to the pages, the file is located in config/g3w-suite/overrides/static/style.css and can be modified directly, changes are effective immediately.

Performances optimization

General rules (in no particular order: they are all mandatory):

  1. set scale-dependent visibility for the entire layer or for some filtered features (example: show only major roads until at scale 1:1E+6)
  2. when using rule-based/categorized classification or scale-dependent visibility create indexes on the column(s) involved in the rule expression (example: "create index idx_elec_penwell_ious on elec_penwell_ious (owner);" )
  3. start the project with only a few layers turned on by default
  4. do not turn on by default base-layers XYZ such as (Google base maps)
  5. do not use rule-based/categorized rendering on layers with too many categories (example: elec_penwell_public_power), they are unreadable anyway
  6. enable redering simplification for not-point layers, set it to Distance 1.2 and check Enable provider simplification if available

PostgreSQL administration

Postgres is running into a Docker container, in order to access the container, you can follow the instruction below:

Check the container name

$ docker ps | grep postgis
84ef6a8d23e6        g3wsuite/postgis:11.0-2.5       "/bin/sh -c /docker-…"   2 days ago          Up 2 days           0.0.0.0:5438->5432/tcp           g3wsuitedocker_postgis_1

In the above example the container name is g3wsuitedocker_postgis_1

Log into the container

$ docker exec -it g3wsuitedocker_postgis_1 bash

Become postgres user

root@84ef6a8d23e6:/# su - postgres

Connect to postgis

postgres@84ef6a8d23e6:~$ psql
psql (11.2 (Debian 11.2-1.pgdg90+1))
Type "help" for help.

postgres=#

Portainer usage

Portainer (https://www.portainer.io) is a docker-based web application used to edit and manage Docker applications in a simple and intuitive way.

Plese refer to the Add new stack section to learn how to deploy the docker-compose-consumer.yml stack with Portainer (>= v2.1.1).

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