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I have been trying to setup kubernetes for a week now as part of an evaluation, but I can only find

  • extremely complex manual solutions that are already out of date or outright broken
  • insanely simple solutions that break a mind numbing amount of best practices
  • "get to know kubernetes cluster all on one box"

My base requirements going in are:

  1. I have AWS
  2. I have VPCs, Subnets + peering already created
  3. I need to be able to build one cluster per environment in the appropriate VPC
  4. Ubuntu 16.04
  5. I should have control over the SGs and instances (terraform + ansible)
  6. Absolutely no single points of failure.
  7. I don't want a solution that creates unnecessary layers by adding tools or controllers above the masters. (WHY?!!)
  8. No blatant security holes

I've tried a couple solutions, but they have failed spectacularly, and require #7

kubeadm (breaks #6, #7)

  • I gave this a try because it was supposed to be a reasonable solution for using existing infrastructure.
  • I was able to get a cluster operational with 1 master and 2 nodes, but it just didn't seem to be working fully (kubernetes-dashboard was inaccessible)
  • In the end, even the tool itself didn't recommend production due to the fact that the docs state the master node cannot be made HA.

juju / conjure-up with "canonical kubernetes" (breaks #2, #3, #5, #6, #7, #8)

  • did not allow specification of VPC. Nevermind managing SGs, instances, working via bastion host.
  • It actually created instances in ec2-classic...?
  • instance naming in AWS is awful (can't tell what's what - masters vs etcd vs ??)
  • 15 security groups for a 3 worker cluster, 9 of which are completely empty?
  • conjure-down fails with 'NoneType' object has no attribute 'controller'
  • It created a single point of failure in the "controller machine"
  • INGRESS TCP 22 0.0.0.0/0 <- I am going to cry (this is why ec2-classic went away years ago)

closed as unclear what you're asking by MadHatter, Jenny D, Dave M, Khaled, mdpc Nov 28 '17 at 1:40

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1

Try out kops - it has support for Terraform output. It should be possible to meet your other requirements with it (although some, like no single point of failure, may require changing the default config).

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You can check typhoon. Personally I'm using kube-aws which is more flexible, but unfortunately no terraform.

I also created a quick start script based on kube-aws.

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