96 lines
4.0 KiB
Markdown
96 lines
4.0 KiB
Markdown
# Drone plugin for Helm 3
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[](https://cloud.drone.io/pelotech/drone-helm3)
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[](https://goreportcard.com/report/github.com/pelotech/drone-helm3)
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[](https://microbadger.com/images/pelotech/drone-helm3 "Get your own image badge on microbadger.com")
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This plugin provides an interface between [Drone](https://drone.io/) or Woodpecker and [Helm 3](https://github.com/kubernetes/helm):
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* Lint your charts
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* Deploy your service
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* Delete your service
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The plugin is inpsired by [drone-helm](https://github.com/ipedrazas/drone-helm), which fills the same role for Helm 2. It provides a comparable feature-set and the configuration settings are backward-compatible.
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## Example configuration
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The examples below give a minimal and sufficient configuration for each use-case. For a full description of each command's settings, see [docs/parameter_reference.md](docs/parameter_reference.md).
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### Linting
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```yaml
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steps:
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- name: lint
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image: pelotech/drone-helm3
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settings:
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mode: lint
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chart: ./
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```
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### Installation
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```yaml
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steps:
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- name: deploy
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image: pelotech/drone-helm3
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settings:
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mode: upgrade
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chart: ./
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release: my-project
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environment:
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KUBE_API_SERVER: https://my.kubernetes.installation/clusters/a-1234
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KUBE_TOKEN:
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from_secret: kubernetes_token
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```
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### Uninstallation
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```yaml
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steps:
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- name: uninstall
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image: pelotech/drone-helm3
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settings:
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mode: uninstall
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release: my-project
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environment:
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KUBE_API_SERVER: https://my.kubernetes.installation/clusters/a-1234
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KUBE_TOKEN:
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from_secret: kubernetes_token
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```
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## Upgrading from drone-helm
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drone-helm3 is largely backward-compatible with drone-helm. There are some known differences:
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* You'll need to migrate the deployments in the cluster [helm-v2-to-helm-v3](https://helm.sh/blog/migrate-from-helm-v2-to-helm-v3/).
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* EKS is not supported. See [#5](https://github.com/pelotech/drone-helm3/issues/5) for more information.
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* The `prefix` setting is no longer supported. If you were relying on the `prefix` setting with `secrets: [...]`, you'll need to switch to the `from_secret` syntax.
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* During uninstallations, the release history is purged by default. Use `keep_history: true` to return to the old behavior.
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* Several settings no longer have any effect. The plugin will produce warnings if any of these are present:
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* `purge` -- this is the default behavior in Helm 3
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* `recreate_pods`
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* `tiller_ns`
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* `upgrade`
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* `canary_image`
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* `client_only`
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* `stable_repo_url`
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* Several settings have been renamed, to clarify their purpose and provide a more consistent naming scheme. For backward-compatibility, the old names are still available as aliases. If the old and new names are both present, the updated form takes priority. Conflicting settings will make your `.drone.yml` harder to understand, so we recommend updating to the new names:
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* `helm_command` is now `mode`
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° `helm_repos` is now `add_repos`
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* `api_server` is now `kube_api_server`
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* `service_account` is now `kube_service_account`
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* `kubernetes_token` is now `kube_token`
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* `kubernetes_certificate` is now `kube_certificate`
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* `wait` is now `wait_for_upgrade`
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* `force` is now `force_upgrade`
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Since helm 3 does not require Tiller, we also recommend switching to a service account with less-expansive permissions.
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### [Contributing](docs/contributing.md)
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This repo is setup in a way that if you enable a personal drone server to build your fork it will
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build and publish your image (makes it easier to test PRs and use the image till the contributions get merged)
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* Build local ```DRONE_REPO_OWNER=josmo DRONE_REPO_NAME=drone-ecs drone exec```
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* on your server (or cloud.drone.io) just make sure you have DOCKER_USERNAME, DOCKER_PASSWORD, and PLUGIN_REPO set as secrets
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