What would be the approach to deploy a traditional web application with a SQL database (PostgreSQL) using containers?
I heard that though Docker c...
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Before I can answer I need to know a little about your situation. Why are you using containers? Will this be on prem or in the cloud. If in the cloud which cloud provider?
The reason I went with using containers so that it lowers the amount of configuring of the environment where the application is hosted from. It'll be hosted from a DigitalOcean droplet.
I don't know if DigitalOcean has any container specific products that could help, but that is one thing to take a look at. Besides that you have two main options in my opinion. You can use use a container orchestration tool. Kubernetes is the most popular but there are others that don't do quite as much like Apache Mesos, Hashicorp Nomad, or Docker Swarm. If I were you I would give all three a quick try to understand which one you think would work best for you. And while you are at it and you have time I would also try out Kubernetes on DigitalOcean.
The other option you have is to treat your containerized app like a normal application by running the docker container on multiple web servers behind a load balancer. This will probably be the simplest option, but you lose some of the advantages orchestrators have.
Hopefully this is useful!
If you a re familiear with Docker and already have your dev-environment set up in a dockerized way, docker swarm may be an idea for production as it's scalable:
docs.docker.com/engine/swarm/swarm...