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Archimedes Trajano
Asked: 2019-10-30 13:54:36 +0800 CST

How can you automate rolling upgrades of Docker Swarm nodes?

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What's the typical process to roll out an upgrade of Docker and other OS updates to a Docker Swarm cluster?

Since I want it rolled out, I was thinking of just doing a full Terraform build which will contain the latest security patches and upgrades. The way I am presently doing it is manually taint a set and upgrade accordingly then prune the left over node definitions.

https://registry.terraform.io/modules/trajano/swarm-aws/docker/

The thing is this is still pretty manual, I would like to be able to say "upgrade swarm" and it will do the work for me with minimal downtime.

docker

1 Answers

  1. When using Terraform to create a set of instances with the aws_instance resource you will have to keep doing the "taint and apply" method.

    If you used an autoscaling group you could use Bouncer to roll the members of the autoscaling group.

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