I want to run my Discourse forum alongside my WordPress server but of course these both run on ports 80 and 443 natively. To get around this I’m planning on using a NGINX reverse proxy to translate front facing sub-domains to my applications running on different ports in the back-end. Below are the steps I have taken to install Discourse:
mkdir /var/discourse
git clone https://github.com/discourse/discourse_docker.git /var/discourse
cd /var/discourse
# Make configuration file
cat <<-"EOF" > /var/discourse/containers/discourse
## this is the all-in-one, standalone Discourse Docker container template
##
## After making changes to this file, you MUST rebuild
## /var/discourse/launcher rebuild app
##
## BE *VERY* CAREFUL WHEN EDITING!
## YAML FILES ARE SUPER SUPER SENSITIVE TO MISTAKES IN WHITESPACE OR ALIGNMENT!
## visit http://www.yamllint.com/ to validate this file as needed
templates:
- "templates/postgres.template.yml"
- "templates/redis.template.yml"
- "templates/web.template.yml"
- "templates/web.ratelimited.template.yml"
## Uncomment these two lines if you wish to add Lets Encrypt (https)
#- "templates/web.ssl.template.yml"
#- "templates/web.letsencrypt.ssl.template.yml"
## which TCP/IP ports should this container expose?
## If you want Discourse to share a port with another webserver like Apache or nginx,
## see https://meta.discourse.org/t/17247 for details
expose:
- "10080:80" # http
- "10443:443" # https
params:
db_default_text_search_config: "pg_catalog.english"
## Set db_shared_buffers to a max of 25% of the total memory.
## will be set automatically by bootstrap based on detected RAM, or you can override
#db_shared_buffers: "256MB"
## can improve sorting performance, but adds memory usage per-connection
#db_work_mem: "40MB"
## Which Git revision should this container use? (default: tests-passed)
#version: tests-passed
env:
LC_ALL: en_GB.UTF-8
LANG: en_GB.UTF-8
LANGUAGE: en_GB.UTF-8
# DISCOURSE_DEFAULT_LOCALE: en
## How many concurrent web requests are supported? Depends on memory and CPU cores.
## will be set automatically by bootstrap based on detected CPUs, or you can override
#UNICORN_WORKERS: 3
## TODO: The domain name this Discourse instance will respond to
## Required. Discourse will not work with a bare IP number.
DISCOURSE_HOSTNAME: 'forum.example.com'
## Uncomment if you want the container to be started with the same
## hostname (-h option) as specified above (default "$hostname-$config")
#DOCKER_USE_HOSTNAME: true
## TODO: List of comma delimited emails that will be made admin and developer
## on initial signup example 'user1@example.com,user2@example.com'
DISCOURSE_DEVELOPER_EMAILS: 'webmaster@example.com'
## TODO: The SMTP mail server used to validate new accounts and send notifications
# SMTP ADDRESS, username, and password are required
# WARNING the char '#' in SMTP password can cause problems!
DISCOURSE_SMTP_ADDRESS: smtp-relay.example.com
DISCOURSE_SMTP_PORT: 587
DISCOURSE_SMTP_USER_NAME: info@example.com
DISCOURSE_SMTP_PASSWORD: password
DISCOURSE_SMTP_ENABLE_START_TLS: true # (optional, default true)
#DISCOURSE_SMTP_DOMAIN: discourse.example.com # (required by some providers)
DISCOURSE_NOTIFICATION_EMAIL: no-reply@example.com # (address to send notifications from)
## If you added the Lets Encrypt template, uncomment below to get a free SSL certificate
LETSENCRYPT_ACCOUNT_EMAIL: webmaster@example.com
## The http or https CDN address for this Discourse instance (configured to pull)
## see https://meta.discourse.org/t/14857 for details
#DISCOURSE_CDN_URL: https://discourse-cdn.example.com
## The maxmind geolocation IP address key for IP address lookup
## see https://meta.discourse.org/t/-/137387/23 for details
#DISCOURSE_MAXMIND_LICENSE_KEY: 1234567890123456
## The Docker container is stateless; all data is stored in /shared
volumes:
- volume:
host: /var/discourse/shared/standalone
guest: /shared
- volume:
host: /var/discourse/shared/standalone/log/var-log
guest: /var/log
## Plugins go here
## see https://meta.discourse.org/t/19157 for details
hooks:
after_code:
- exec:
cd: $home/plugins
cmd:
- git clone https://github.com/discourse/docker_manager.git
## Any custom commands to run after building
run:
- exec: echo "Beginning of custom commands"
## If you want to set the 'From' email address for your first registration, uncomment and change:
## After getting the first signup email, re-comment the line. It only needs to run once.
#- exec: rails r "SiteSetting.notification_email='info@unconfigured.discourse.org'"
- exec: echo "End of custom commands"
EOF
# Setup discourse with configuration file
./launcher bootstrap discourse
I can confirm Discourse is listening on the correct ports:
root@ubuntu-server:~# netstat -tlnp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:10080 0.0.0.0:* LISTEN 185948/docker-proxy
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN 150667/docker-proxy
tcp 0 0 0.0.0.0:9000 0.0.0.0:* LISTEN 150655/docker-proxy
tcp 0 0 0.0.0.0:10443 0.0.0.0:* LISTEN 185937/docker-proxy
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 169991/nginx: maste
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN 519/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1465/sshd: /usr/sbi
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 169991/nginx: maste
tcp6 0 0 :::22 :::* LISTEN 1465/sshd: /usr/sbi
If I curl the URL and port number I get 301 Moved permanently:
root@ubuntu-server:~# curl forum.example.com:10080
<html>
<head><title>301 Moved Permanently</title></head>
<body>
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx/1.18.0</center>
</body>
</html>