Related to #494
This feature is mostly a built-in alternative to the `incubator/raw` chart without external dependency and has
access to helmfile's own template functions and template data.
The expected use-case of this feature is to add arbitrary K8s resources to your deployment.
Unlike the original issue raised in #494 this doesn't enable you to add arbitary resources to a release. That's another story. But this would be a good foundation for that, too.
Please see the updated `advanced-features.md` for more details.
This is often used for adding common labels and annotations to any resources rendered from a Helm chart.
This is an experimental feature to support a potential use-case that you need to set namespaces in manifests rendered by `helmfile template`, WHEN the chart is unconventional hence does not have `namespace: {{ .Namespace }}`.
Rather than using this, you should usually fork/maintain or update/pull-request the chart to have `namespace: {{ .Namespace }}`.
Use this only when you CAN NOT do so, but still need to use `helmfile template`.
This, in combination with #1172, allows you to use `go-getter`-supported URL for K8s manifests on `chart`, so that Helmfile automatically fetches it and then turning it into a temporary local chart, which is then installed by Helmfile as similar as standard Helm charts.
An example usecase of this is to install cert-manager CRDs which is distributed separately from the chart:
```
releases:
- name: cert-manager-crds
chart: git::http://github.com/jetstack/cert-manager.git@deploy/crds?ref=v0.15.2
```
I'm adding this based on discussion with @lukasmrtvy. He was trying to install cert-manager and prometheus-opreator with Helmfile, and this combined with #1373 should do the job. Thanks for the input!
Probably this has been affecting strategicMergePatches and dependencies as well, as the source of the problem is the underlying common feature called helm-x that previsouly used `helm template --output-dir`, which turned out to be not working as intended.
Ref #1279
A kustomization has not been properly chartified when a kustomization is specified on `releases[].chart` but there were no `releases[].strategicMergePatches` and `jsonPatches` specified.
This fixes that.
This is the GA version of the helm-x integration #673 developed last year.
You get all the following benefits without an extra helm plugin:
- Ability to add ad-hoc chart dependencies/aliases, without forking the chart (Fixes#876 )
- Ability to patch resulting K8s resources before installing the helm chart
- Ability to install a kustomization as a chart (Requires `kustomize` binary to be available in `$PATH`
- Ability to install a directory of K8s manifests as a chart
- etc.
Use with the helm-x support(#673)
This enhances config syntax to accept adopt: [NS/KIND/RESOURCE_NAME] at the release level so that helmfile calls helm-x to transparently import existing resources at the installation time.
Resolves#84
This enhances helmfile so that it can:
- Treat K8s manifests directories and Kustomize projects as charts
- Add adhoc chart dependencies on sync/diff/template without forking or modifying chart(s) (#649)
- Add adhoc patches(JSON Patch or Strategic Merge Patch supported) to be applied to the K8s resources before sync/diff/template, without forking or modifyin chart(s) (#650)
The usage is as outlined in https://github.com/mumoshu/helm-x/tree/master/examples/helmfile.
Add any or all of `dependencies:`, `jsonPatches:` and `strategicMergePatches:` so that it adds additional flags to `helm` calls that is only supported by `helm x`.
```yaml
releases:
- name: kustomize
chart: ../kustomize
- name: manifests
chart: ../manifests
- name: foo
chart: incubator/raw
dependencies:
- alias: bar
chart: incubator/raw
values:
- values.yaml
- bar:
enabled: true
resources:
- apiVersion: v1
kind: Pod
metadata:
name: bar
spec:
containers:
- command:
- sleep
- 1000
image: alpine:3.9.4
imagePullPolicy: IfNotPresent
name: bar
jsonPatches:
- target:
version: v1
kind: Pod
name: foo
patch:
- op: replace
path: /spec/containers/0/command
value:
- sleep
- "123"
strategicMergePatches:
- apiVersion: v1
kind: Pod
metadata:
name: bar
spec:
containers:
- name: bar
command:
- sleep
- "234"
```
You can alternatively provide `source: path/to/patch.yaml` for `jsonPatches` and `strategicMergePatches` items to externalize it. Add `.gotmpl` suffix like you would do for values files for templating.
When running `helmfile` you must point `--helm-binary` to the `helm-x` binary like below:
```
$ helmfile --helm-binary ~/.helm/plugins/helm-x/bin/helm-x --log-level debug apply
```
after installing the [helm-x](https://github.com/mumoshu/helm-x) plugin.
The integration should ideally be automatic. That is, it shouldn't force you to set `--helm-binary`. But I had no other way to not bloat helmfile's codebase to just add this experimental feature.
Resolves#649Resolves#650
Yusuke Kuoka
mdaisuke
Joshua Hansen
Marc Sutter