how to add --post-renderer into helm cli ?

[tanguofu]

Helm 3.1+ support Post Rendering: https://helm.sh/docs/topics/advanced/#custom-post-renderers , which can manually manipulate, configure, and/or validate rendered manifests before they are installed by Helm.

So how to add this flags to helmfile?

[mumoshu]

Unforunately it isn't possible! If you're willing to contribute a new feature for that, I'd be more than welcome to review it! Thanks

[tanguofu]

it is same that helmfile with --args="--post-renderer exec" works

[tanguofu]

there same to has a bug: the --post-renderer arg will pase into helm list but which did not supported.

helmfile  -f k8s/helmfile.yaml   apply --args="--post-renderer=`pwd`/script/rewrite.sh"

came into the error:

Listing releases matching ^unifiedcsi$
in k8s/helmfile.yaml: in .helmfiles[4]: in storage-module/helmfile.yaml: command "/usr/local/bin/helm" exited with non-zero status:

PATH:
  /usr/local/bin/helm

ARGS:
  0: helm (4 bytes)
  1: list (4 bytes)
  2: --filter (8 bytes)
  3: ^ti-unifiedcsi$ (15 bytes)
  4: --namespace (11 bytes)
  5: ti-inf (6 bytes)
  6: --uninstalling (14 bytes)
  7: --deployed (10 bytes)
  8: --failed (8 bytes)
  9: --pending (9 bytes)
  10: --post-renderer=/home/install/helm-charts/script/rewrite.sh (69 bytes)

ERROR:
  exit status 1

EXIT S

i thinks there is two way to fix this:
A: just filter the --post-renderer in helm list function at :

helmfile/pkg/helmexec/exec.go

Line 235 in 9dca4fe

out, err := helm.exec(append(append(preArgs, args...), flags...), env)

B: add a specail flags --post-renderer to helmfile

so which canbe accepted? i d like to contribe with a PR.

many thanks.

[yxxhero]

@tanguofu #2148 please see this.

[mumoshu]

-args isn't a fully supported feature because we aren't sure which args should be passed to which helm command(s) helmfile is running. I'd welcome your contribution to make it configurable per release in helmfile.yaml (Perhaps releases[].postRenderer or releases[].postRenders[] if helm supports passing multiple renders to it?