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feat: support HELMFILE_NAMESPACE env var for default namespace (#2592)

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* feat: support HELMFILE_NAMESPACE env var for default namespace

Mirrors the existing HELMFILE_ENVIRONMENT pattern: the --namespace
CLI flag takes precedence, falling back to HELMFILE_NAMESPACE when
unset.

Signed-off-by: Dominik Schmidt <dev@dominik-schmidt.de>

* docs: mention HELMFILE_NAMESPACE in cli.md and templating.md

Signed-off-by: Dominik Schmidt <dev@dominik-schmidt.de>

---------

Signed-off-by: Dominik Schmidt <dev@dominik-schmidt.de>
This commit is contained in:
Dominik Schmidt
2026-05-19 21:43:11 +08:00
committed by GitHub
parent c15cbb096a
commit 31ac918512
6 changed files with 52 additions and 3 deletions
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docs/cli.md
+1 -1
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@@ -52,7 +52,7 @@ Flags:
--kube-context string Set kubectl context. Overrides "HELMFILE_KUBE_CONTEXT" OS environment variable when specified. Uses current kubectl context by default
-k, --kustomize-binary string Path to the kustomize binary (default "kustomize")
--log-level string Set log level, default info (default "info")
-n, --namespace string Set namespace. Uses the namespace set in the context by default, and is available in templates as {{ .Namespace }}
-n, --namespace string Set namespace. Overrides "HELMFILE_NAMESPACE" OS environment variable when specified. Uses the namespace set in the context by default, and is available in templates as {{ .Namespace }}
--no-color Output without color
-q, --quiet Silence output. Equivalent to log-level warn
-l, --selector stringArray Only run using the releases that match labels. Labels can take the form of foo=bar or foo!=bar.
docs/templating.md
+1
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@@ -67,6 +67,7 @@ Helmfile uses some OS environment variables to override default behaviour:
* `HELMFILE_EXPERIMENTAL` - enable experimental features, expecting `true` lower case
* `HELMFILE_ENVIRONMENT` - specify [Helmfile environment](environments.md), it has lower priority than CLI argument `--environment`
* `HELMFILE_KUBE_CONTEXT` - specify the kubectl context, it has lower priority than CLI argument `--kube-context`
* `HELMFILE_NAMESPACE` - specify the namespace, it has lower priority than CLI argument `--namespace`
* `HELMFILE_TEMPDIR` - specify directory to store temporary files
* `HELMFILE_UPGRADE_NOTICE_DISABLED` - expecting any non-empty value to skip the check for the latest version of Helmfile in [helmfile version](cli.md#version)
* `HELMFILE_GO_YAML_V3` - use *go.yaml.in/yaml/v3* instead of *go.yaml.in/yaml/v2*. It's `false` by default in Helmfile v0.x, and `true` in Helmfile v1.x.