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I have a Spring boot application. A Docker image is created with the jar file of that Spring boot application and is run by Jenkins on a UAT server. What happens is, whenever there are some code-changes being pushed into a git repo, a new Docker image is created by Jenkins and is run on that UAT server by Jenkins. How can this running Docker container be updated/upgraded automatically without any downtime?

kurious
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  • please check https://stackoverflow.com/questions/26423515/how-to-automatically-update-your-docker-containers-if-base-images-are-updated – dassum Jan 07 '20 at 18:57
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    Typical practice is to deploy a second container alongside the first one, and use a load balancer in front of them to avoid downtime during the upgrade. Cluster environments like Kubernetes can automate this for you. – David Maze Jan 07 '20 at 19:09
  • Thanks all for their inputs! @DavidMaze, can you please point some good resources/docs on how Kubernetes does this? – kurious Jan 08 '20 at 16:57

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