First commit for karpenter-generate

.github/workflows/release.yaml

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+name: release
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-go@v5
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v5
+        with:
+          version: latest
+          args: release --clean 
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

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+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+# cluster-config
+cluster-config.yml
+dist/
+
+# local build artifacts
+karpenter-generate

.goreleaser.yaml

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+version: 1
+
+before:
+  hooks:
+    - go mod tidy
+
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+
+archives:
+  - format: tar.gz
+    # this name template makes the OS and Arch compatible with the results of `uname`.
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+      {{- if .Arm }}v{{ .Arm }}{{ end }}
+    # use zip for windows archives
+    format_overrides:
+      - goos: windows
+        format: zip
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"

LICENSE

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+MIT No Attribution
+
+Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+

README.md

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+# `karpenter-generate`
+This is a simple CLI tool to generate AWS Karpenter Custom Kubernetes Resources (Nodepool & EC2NodeClass) from AWS EKS Managed Nodegroup information. The generated resources can be stored in as a yaml manifest file or can be directly applied to the cluster.
+
+## Example Usage
+### For All Managed Nodegroups
+The tool can be used without any flag and it will scan all the Managed Nodegroups in the cluster. The cluster to scan is decided based on current-context in kubeconfig
+```bash
+karpenter-generate
+```
+### For specific Managed Nodegroup
+To generate Karpenter Custom Resources for a specific Managed Nodegroup.
+```bash
+karpenter-generate --nodegroup <Managed_Nodegroup_Name>
+```
+
+### For cluster other than current-context
+To specifcy other cluster than current-context
+```bash
+karpenter-generate  --cluster <Cluster_Name>  --region <Region>
+```
+
+## Prerequisites
+- Configured [AWS CLI](https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html)
+- Valid kubeconfig store at `$HOME/.kube/config`
+
+## Installation
+To install the tool, follow these steps:
+
+As of now the tool can only be downloaded as a archive file from release artifacts. Download the archive file from relase page according to the Arch of your machine
+
+| OS | Arch | Download|
+| ------ | ------ | ------ |
+| MacOS   | AMD64/x86_64 | [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Darwin_x86_64.tar.gz)|
+|    | ARM64| [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Darwin_arm64.tar.gz)|
+| Linux   | AMD64/x86_64 | [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Linux_x86_64.tar.gz)|
+|    | ARM64| [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Linux_arm64.tar.gz)|
+| Windows   | AMD64/x86_64 | [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Windows_x86_64.tar.gz)|
+|    | ARM64| [Link](https://github.com/punkwalker/karpenter-generate/releases/download/v0.0.1/karpenter-generate_Windows_arm64.tar.gz)|
+
+After downloading the archive, extract it and run the binary/executable of the tool.
+
+## Help
+```bash
+karpeter-generate  --help
+
+Description:
+  A CLI tool to generate Karpenter Custom Resources such as
+  Nodepools and EC2NodeClass from details of EKS Managed Nodegroup
+
+Usage:
+  karpenter-generate [flags]
+
+Optional Flags:
+  --cluster string     name of the EKS cluster 
+                       (default: from kubeconfig current-context)
+  --nodegroup string   name of the EKS managed nodegroup 
+                       (default: all the nodegroups)
+  --region string      the region to use, overrides config/env settings 
+                       (default: from kubeconfig current-context or AWS config)
+  --profile string     use the specific profile from your credential file 
+                       (default: from kubeconfig current-context or AWS config)
+  -h, --help           help for karpenter-generate
+```
+
+## Contributing
+Contributions are welcome! If you encounter any issues or have suggestions for improvements, please follow these steps:
+
+1. Fork the repository.
+2. Create a new branch for your feature or bug fix.
+3. Make your changes and commit them with descriptive commit messages.
+4. Push your changes to your forked repository.
+5. Submit a pull request to the main repository.
+
+Please ensure that your code adheres to the project's coding standards and includes appropriate tests.
+
+## License
+This tool is licensed under the License Name License. See the `LICENSE.md` file for more information.

cmd/root.go

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+package cmd
+
+import (
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/punkwalker/karpenter-generate/pkg/options"
+)
+
+var opts *options.Options
+
+var rootCmd = &cobra.Command{
+	Use:   "karpenter-generate",
+	Short: "Tool to generate Karpenter CRDs from EKS Managed Nodegroups",
+	Long: `This is a CLI tool which can be used to generate Karpenter Custom Resources such as 
+Nodepools and EC2NodeClass from details of EKS Managed Nodegroup. Which will allow seamless migration to Karpenter.`,
+	SilenceUsage: true,
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return run(opts)
+	},
+}
+
+func init() {
+	rootCmd.CompletionOptions.HiddenDefaultCmd = true
+	opts = options.New(rootCmd)
+}
+
+func Execute() {
+	err := rootCmd.Execute()
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+func AddCommand(cmd *cobra.Command) {
+	rootCmd.AddCommand(cmd)
+}

cmd/run.go

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+package cmd
+
+import (
+	"fmt"
+
+	"github.com/aws/aws-sdk-go-v2/service/eks/types"
+
+	"github.com/punkwalker/karpenter-generate/pkg/aws"
+	"github.com/punkwalker/karpenter-generate/pkg/karpenter"
+	"github.com/punkwalker/karpenter-generate/pkg/options"
+)
+
+func run(opts *options.Options) error {
+	aws.Init(opts)
+	opts.Parse()
+	var nodeGroups []types.Nodegroup
+
+	eksClient := aws.NewEKSClient()
+	if opts.NodegroupName != "" {
+		nodeGroup, err := eksClient.DescribeNodegroup(opts.ClusterName, opts.NodegroupName)
+		if err != nil {
+			return aws.FormatErrorAsMessageOnly(err)
+		}
+		nodeGroups = append(nodeGroups, *nodeGroup)
+		return karpenter.Generate(&nodeGroups)
+	}
+
+	nodeGroups, err := eksClient.GetAllNodeGroups(opts)
+	if err != nil {
+		return aws.FormatErrorAsMessageOnly(err)
+	}
+
+	if len(nodeGroups) == 0 {
+		return fmt.Errorf("no nodegroups found")
+	}
+
+	return karpenter.Generate(&nodeGroups)
+}

go.mod

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+module github.com/punkwalker/karpenter-generate
+
+go 1.22.0
+
+toolchain go1.22.2
+
+require (
+	github.com/aws/aws-sdk-go-v2 v1.26.1
+	github.com/aws/aws-sdk-go-v2/config v1.27.11
+	github.com/aws/aws-sdk-go-v2/service/autoscaling v1.40.5
+	github.com/aws/aws-sdk-go-v2/service/ec2 v1.160.0
+	github.com/aws/aws-sdk-go-v2/service/eks v1.42.1
+	github.com/aws/karpenter-provider-aws v0.36.1
+	github.com/aws/smithy-go v1.20.2
+	github.com/spf13/cobra v1.8.0
+	k8s.io/api v0.30.0
+	k8s.io/apimachinery v0.30.0
+	k8s.io/cli-runtime v0.30.0
+	k8s.io/client-go v0.30.0
+	sigs.k8s.io/karpenter v0.36.1
+)
+
+require (
+	github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect
+	github.com/aws/aws-sdk-go v1.51.16 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.17.11 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.16.1 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.3.5 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.6.5 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.8.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.11.2 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.11.7 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.20.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.23.4 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.28.6 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
+	github.com/evanphx/json-patch v5.7.0+incompatible // indirect
+	github.com/go-errors/errors v1.4.2 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-openapi/jsonpointer v0.20.0 // indirect
+	github.com/go-openapi/jsonreference v0.20.2 // indirect
+	github.com/go-openapi/swag v0.22.4 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/btree v1.0.1 // indirect
+	github.com/google/gnostic-models v0.6.8 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
+	github.com/google/uuid v1.3.1 // indirect
+	github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7 // indirect
+	github.com/imdario/mergo v0.3.16 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/liggitt/tabwriter v0.0.0-20181228230101-89fcab3d43de // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/hashstructure/v2 v2.0.2 // indirect
+	github.com/moby/term v0.0.0-20221205130635-1aeaba878587 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/monochromegane/go-gitignore v0.0.0-20200626010858-205db1a8cc00 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/robfig/cron/v3 v3.0.1 // indirect
+	github.com/samber/lo v1.39.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/xlab/treeprint v1.2.0 // indirect
+	go.starlark.net v0.0.0-20230525235612-a134d8f9ddca // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
+	golang.org/x/net v0.23.0 // indirect
+	golang.org/x/oauth2 v0.16.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/term v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	google.golang.org/appengine v1.6.8 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect
+	k8s.io/utils v0.0.0-20240102154912-e7106e64919e // indirect
+	knative.dev/pkg v0.0.0-20231010144348-ca8c009405dd // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/kustomize/api v0.13.5-0.20230601165947-6ce0bf390ce3 // indirect
+	sigs.k8s.io/kustomize/kyaml v0.14.3-0.20230601165947-6ce0bf390ce3 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
+)