create Helm chart (#392)

.pre-commit-config.yaml

@@ -25,4 +25,4 @@ repos:
   rev: "v1.25.0"
   hooks:
   - id: yamllint
-    exclude: "^(\\.pre-commit-config\\.yaml|\\.github/workflows/.*|\\.github/dependabot\\.yml)$"
+    exclude: "^(\\.pre-commit-config\\.yaml|\\.github/workflows/.*|\\.github/dependabot\\.yml|deploy/charts/.*)$"

deploy/charts/crate-operator-crds/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

deploy/charts/crate-operator-crds/Chart.yaml

@@ -0,0 +1,18 @@
+apiVersion: v2
+name: crate-operator-crds
+description: Crate Operator CRDs - Helm chart for installing and upgrading Custom Resource Definitions (CRDs) for the Crate Operator.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "2.14.0"
+
+maintainers:
+  - name: Crate.io

deploy/charts/crate-operator-crds/README.md

@@ -0,0 +1,22 @@
+# Crate Operator CRDs Helm Chart
+
+A Helm chart for installing and upgrading the CRDs for [Crate Operator](https://github.com/crate/crate-operator).
+To be able to deploy the custom resource CrateDB to a Kubernetes cluster, the API needs to be extended with a Custom Resource Definition (CRD).
+
+Helm must be installed to use the charts. Please refer to Helm's [documentation](https://helm.sh/docs/) to get started.
+
+## Usage
+
+Once Helm is properly set up, install the chart.
+
+### Install from local folder
+
+```shell
+helm install crate-operator-crds crate-operator-crds
+```
+
+### Upgrading the Operator
+
+```
+helm upgrade --atomic crate-operator-crds crate-operator-crds
+```

deploy/charts/crate-operator-crds/templates/NOTES.txt

@@ -0,0 +1 @@
+Thank you for installing {{ .Chart.Name }}.