Introduced new CLI flag `-d`/`--values-directory`
for loading values from YAML files from a
specified directory. Following are the key
details:
- This will be used by the following commands:
1. `install`
2. `lint`
3. `package`
4. `template`
5. `upgrade`
Updated the help text of these commands with the
same.
- Made this flag the lowest in precedence i.e.,
values from values directory can be overridden
by inputs from any other input flags
(`-f`/`--values`, `--set-json`, `--set`,
`--set-string`, `--set-file`, `--set-literal`).
Note: The default values from the chart's
`values.yaml` file will have the lowest
precedence than all the input flags including
`-d`/`--values-directory` by design. In order
the values from `values.yaml` to override the
values from `-d`/`--values-directory`, users can
explicitly provide the chart's `values.yaml`
file path using the `-f`/`--values` flag.
- This flag reads all `.yaml` files from the
specified directory and its subdirectories
recursively, in lexicographical order. For eg.
for the following directory structure:
foo/
├── bar/
│ └── bar.yaml
├── baz/
│ ├── baz.yaml
│ └── qux.yaml
├── baz.txt
└── foo.yaml
The files will be read in the order:
`bar/bar.yaml`, `baz/baz.yaml`, `baz/qux.yaml`,
`foo.yaml`.
- If the specified directory does not exist, an
error is returned.
- Non-YAML files in the directory are ignored.
i.e., if the specified directory exists but
contains no YAML files, an empty map is returned
without errors.
- If multiple YAML files contain overlapping keys,
the values are overridden in lexicographical
order. For eg. in the above example, if both
`baz/baz.yaml` and `foo.yaml` contain a key
`replicaCount`, the value from `foo.yaml` will
take precedence as it is read last.
Fixes helm#10416
Signed-off-by: Bhargav Ravuri <bhargav.ravuri@infracloud.io>
Bhargav Ravuri