How to have multiple istances?

[olivierognn]

Is possible to have multiple istances of magento website on the same server?
What I need to change?

[andreaskoch]

Hi @olivierognn.
Yes, it is possible to run multiple instances at the same time. You have three options:

Option 1: Multiple Public IPs

If your server has multiple IP addresses you can bind the web ports of the different instances to the different IP addresses (see: docker-compose.yml)

Instance 1:

nginx:
  image: nginx:latest
  ports:
    - "192.168.2.2:80:80"
    - "192.168.2.2:443:443"

Instance 2:

nginx:
  image: nginx:latest
  ports:
    - "192.168.2.3:80:80"
    - "192.168.2.3:443:443"

Option 2: Using High Ports

If you don't have have multiple IP addresses available you can use different public ports - this is only a viable option for internally used shops:

Instance 1:

nginx:
  image: nginx:latest
  ports:
    - "80:80"
    - "443:443"

Instance 2:

nginx:
  image: nginx:latest
  ports:
    - "6080:80"
    - "60443:443"

Option 3: Reverse Proxy

Or can can put a reverse proxy in front of the two instances which routes the traffic based on the hostname.

• Request for site1.example.com: Nginx on port 80 -> Site 1 (127.0.0.2:80)
• Request for site2.example.com: Nginx on port 80 -> Site 1 (127.0.0.3:80)

In that case I would recommend to run the Nginx natively und bind the two instances to local IP addreses (e.g. 127.0.0.2, 127.0.0.3):

Instance 1:

nginx:
  image: nginx:latest
  ports:
    - "127.0.0.2:80:80"
    - "127.0.0.2:443:443"

Instance 2:

nginx:
  image: nginx:latest
  ports:
    - "127.0.0.3:80:80"
    - "127.0.0.3:443:443"

Whenever possible I would use Option 1. That's easiest to setup and maintain.