How can I achieve high availability of my application using docker swarm

Question

Explain the concept of high availability using docker swarm also specify how can i achieve this objective for my web application?

Answer 1

High Availability is a feature where you have multiple instances of your applications running in parallel to handle increased load or failures.

These two paradigms fit perfectly into Docker Swarm,the built-in orchestrator that comes with Docker.

Deploying your applications like this will improve your uptime which translates to happy users.

For creating a high availability container in the Docker Swarm, you need to deploy a docker service to the swarm with nginx image.

This can be done by using docker swarm create command as specified:

# docker service create --name nginx --publish 80:80 nginx

To explore more about docker swarm and how you could use it to achieve high availability do have a look:

https://www.edureka.co/blog/docker-swarm-cluster-of-docker-engines-for-high-availability

Hope this helps!