https://github.com/h3poteto/k8s-clusters

kops kubernetes cluster definition
https://github.com/h3poteto/k8s-clusters

kops kubernetes

Last synced: 17 days ago
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kops kubernetes cluster definition

• Host: GitHub
• URL: https://github.com/h3poteto/k8s-clusters
• Owner: h3poteto
• Created: 2019-02-20T13:01:25.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-06-22T13:56:00.000Z (5 months ago)
• Last Synced: 2024-10-06T16:41:44.846Z (about 1 month ago)
• Topics: kops, kubernetes
• Language: Makefile
• Homepage:
• Size: 105 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
## Create cluster

```

$ kops create cluster external-prd-20200329.k8s.h3poteto.dev --zones ap-northeast-1a,ap-northeast-1c,ap-northeast-1d --node-count 3 --master-zones ap-northeast-1a,ap-northeast-1c,ap-northeast-1d --node-size t3.medium --master-size t3.small

```

Edit this cluster before apply. And apply it.

```

$ kops update cluster --lifecycle-overrides IAMRole=ExistsAndWarnIfChanges,IAMRolePolicy=ExistsAndWarnIfChanges,IAMInstanceProfileRole=ExistsAndWarnIfChanges  --name external-prd-20200329.k8s.h3poteto.dev --yes

```

## Edit cluster

You can edit cluster or instancegroup.

Edit cluster.

```bash

$ kops edit cluster external-prd-20200329.k8s.h3poteto.dev

```

Edit master instancegroup. You have to edit each master instance.

```bash

$ kops edit instancegroup master-ap-northeast-1a --name external-prd-20200329.k8s.h3poteto.dev

$ kops edit instancegroup master-ap-northeast-1c --name external-prd-20200329.k8s.h3poteto.dev

...

```

Edit node instancegroup.

```bash

$ kops edit instancegroup nodes --name external-prd-20200329.k8s.h3poteto.dev

```

## Update cluster

And after that, please update the cluster.

At first, update cluster definition.

Then rolling update the cluster to replace all master and node instances.

```bash

$ kops update cluster --yes --admin --lifecycle-overrides IAMRole=ExistsAndWarnIfChanges,IAMRolePolicy=ExistsAndWarnIfChanges,IAMInstanceProfileRole=ExistsAndWarnIfChanges

```

Sometimes the command show some differences about iam role, please ignore it. I added required policy to role, but kops added the poliyc as inline policy, so the differences are appear. But it is no problem.

```bash

# update master instances

$ kops rolling-update cluster external-prd-20200329.k8s.h3poteto.dev --instance-group-roles=control-plane --force --yes

# update node instances

$ kops rolling-update cluster external-prd-20200329.k8s.h3poteto.dev --instance-group-roles=node --force --yes

```