|
|
|
@ -141,9 +141,9 @@ for greater detail.
|
|
|
|
|
|
|
|
|
|
|
|
## Chart Dependencies
|
|
|
|
## Chart Dependencies
|
|
|
|
|
|
|
|
|
|
|
|
In Helm, one chart may depend on any number of other charts.
|
|
|
|
In Helm, one chart may depend on any number of other charts.
|
|
|
|
These dependencies can be dynamically linked through the `requirements.yaml`
|
|
|
|
These dependencies can be dynamically linked through the `requirements.yaml`
|
|
|
|
file or brought in to the `charts/` directory and managed manually.
|
|
|
|
file or brought in to the `charts/` directory and managed manually.
|
|
|
|
|
|
|
|
|
|
|
|
Although manually managing your dependencies has a few advantages some teams need,
|
|
|
|
Although manually managing your dependencies has a few advantages some teams need,
|
|
|
|
the preferred method of declaring dependencies is by using a
|
|
|
|
the preferred method of declaring dependencies is by using a
|
|
|
|
@ -290,11 +290,11 @@ tags:
|
|
|
|
|
|
|
|
|
|
|
|
In the above example all charts with the tag `front-end` would be disabled but since the
|
|
|
|
In the above example all charts with the tag `front-end` would be disabled but since the
|
|
|
|
`subchart1.enabled` path evaluates to 'true' in the parent's values, the condition will override the
|
|
|
|
`subchart1.enabled` path evaluates to 'true' in the parent's values, the condition will override the
|
|
|
|
`front-end` tag and `subchart1` will be enabled.
|
|
|
|
`front-end` tag and `subchart1` will be enabled.
|
|
|
|
|
|
|
|
|
|
|
|
Since `subchart2` is tagged with `back-end` and that tag evaluates to `true`, `subchart2` will be
|
|
|
|
Since `subchart2` is tagged with `back-end` and that tag evaluates to `true`, `subchart2` will be
|
|
|
|
enabled. Also notes that although `subchart2` has a condition specified in `requirements.yaml`, there
|
|
|
|
enabled. Also notes that although `subchart2` has a condition specified in `requirements.yaml`, there
|
|
|
|
is no corresponding path and value in the parent's values so that condition has no effect.
|
|
|
|
is no corresponding path and value in the parent's values so that condition has no effect.
|
|
|
|
|
|
|
|
|
|
|
|
##### Using the CLI with Tags and Conditions
|
|
|
|
##### Using the CLI with Tags and Conditions
|
|
|
|
|
|
|
|
|
|
|
|
@ -317,19 +317,19 @@ helm install --set tags.front-end=true --set subchart2.enabled=false
|
|
|
|
|
|
|
|
|
|
|
|
#### Importing Child Values via requirements.yaml
|
|
|
|
#### Importing Child Values via requirements.yaml
|
|
|
|
|
|
|
|
|
|
|
|
In some cases it is desirable to allow a child chart's values to propagate to the parent chart and be
|
|
|
|
In some cases it is desirable to allow a child chart's values to propagate to the parent chart and be
|
|
|
|
shared as common defaults. An additional benefit of using the `exports` format is that it will enable future
|
|
|
|
shared as common defaults. An additional benefit of using the `exports` format is that it will enable future
|
|
|
|
tooling to introspect user-settable values.
|
|
|
|
tooling to introspect user-settable values.
|
|
|
|
|
|
|
|
|
|
|
|
The keys containing the values to be imported can be specified in the parent chart's `requirements.yaml` file
|
|
|
|
The keys containing the values to be imported can be specified in the parent chart's `requirements.yaml` file
|
|
|
|
using a YAML list. Each item in the list is a key which is imported from the child chart's `exports` field.
|
|
|
|
using a YAML list. Each item in the list is a key which is imported from the child chart's `exports` field.
|
|
|
|
|
|
|
|
|
|
|
|
To import values not contained in the `exports` key, use the [child-parent](#using-the-child-parent-format) format.
|
|
|
|
To import values not contained in the `exports` key, use the [child-parent](#using-the-child-parent-format) format.
|
|
|
|
Examples of both formats are described below.
|
|
|
|
Examples of both formats are described below.
|
|
|
|
|
|
|
|
|
|
|
|
##### Using the exports format
|
|
|
|
##### Using the exports format
|
|
|
|
|
|
|
|
|
|
|
|
If a child chart's `values.yaml` file contains an `exports` field at the root, its contents may be imported
|
|
|
|
If a child chart's `values.yaml` file contains an `exports` field at the root, its contents may be imported
|
|
|
|
directly into the parent's values by specifying the keys to import as in the example below:
|
|
|
|
directly into the parent's values by specifying the keys to import as in the example below:
|
|
|
|
|
|
|
|
|
|
|
|
```yaml
|
|
|
|
```yaml
|
|
|
|
@ -346,8 +346,8 @@ exports:
|
|
|
|
myint: 99
|
|
|
|
myint: 99
|
|
|
|
```
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
Since we are specifying the key `data` in our import list, Helm looks in the `exports` field of the child
|
|
|
|
Since we are specifying the key `data` in our import list, Helm looks in the `exports` field of the child
|
|
|
|
chart for `data` key and imports its contents.
|
|
|
|
chart for `data` key and imports its contents.
|
|
|
|
|
|
|
|
|
|
|
|
The final parent values would contain our exported field:
|
|
|
|
The final parent values would contain our exported field:
|
|
|
|
|
|
|
|
|
|
|
|
@ -358,16 +358,16 @@ myint: 99
|
|
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
Please note the parent key `data` is not contained in the parent's final values. If you need to specify the
|
|
|
|
Please note the parent key `data` is not contained in the parent's final values. If you need to specify the
|
|
|
|
parent key, use the 'child-parent' format.
|
|
|
|
parent key, use the 'child-parent' format.
|
|
|
|
|
|
|
|
|
|
|
|
##### Using the child-parent format
|
|
|
|
##### Using the child-parent format
|
|
|
|
|
|
|
|
|
|
|
|
To access values that are not contained in the `exports` key of the child chart's values, you will need to
|
|
|
|
To access values that are not contained in the `exports` key of the child chart's values, you will need to
|
|
|
|
specify the source key of the values to be imported (`child`) and the destination path in the parent chart's
|
|
|
|
specify the source key of the values to be imported (`child`) and the destination path in the parent chart's
|
|
|
|
values (`parent`).
|
|
|
|
values (`parent`).
|
|
|
|
|
|
|
|
|
|
|
|
The `import-values` in the example below instructs Helm to take any values found at `child:` path and copy them
|
|
|
|
The `import-values` in the example below instructs Helm to take any values found at `child:` path and copy them
|
|
|
|
to the parent's values at the path specified in `parent:`
|
|
|
|
to the parent's values at the path specified in `parent:`
|
|
|
|
|
|
|
|
|
|
|
|
```yaml
|
|
|
|
```yaml
|
|
|
|
@ -382,7 +382,7 @@ dependencies:
|
|
|
|
parent: myimports
|
|
|
|
parent: myimports
|
|
|
|
```
|
|
|
|
```
|
|
|
|
In the above example, values found at `default.data` in the subchart1's values will be imported
|
|
|
|
In the above example, values found at `default.data` in the subchart1's values will be imported
|
|
|
|
to the `myimports` key in the parent chart's values as detailed below:
|
|
|
|
to the `myimports` key in the parent chart's values as detailed below:
|
|
|
|
|
|
|
|
|
|
|
|
```yaml
|
|
|
|
```yaml
|
|
|
|
# parent's values.yaml file
|
|
|
|
# parent's values.yaml file
|
|
|
|
@ -391,7 +391,7 @@ myimports:
|
|
|
|
myint: 0
|
|
|
|
myint: 0
|
|
|
|
mybool: false
|
|
|
|
mybool: false
|
|
|
|
mystring: "helm rocks!"
|
|
|
|
mystring: "helm rocks!"
|
|
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
```
|
|
|
|
```yaml
|
|
|
|
```yaml
|
|
|
|
# subchart1's values.yaml file
|
|
|
|
# subchart1's values.yaml file
|
|
|
|
@ -400,7 +400,7 @@ default:
|
|
|
|
data:
|
|
|
|
data:
|
|
|
|
myint: 999
|
|
|
|
myint: 999
|
|
|
|
mybool: true
|
|
|
|
mybool: true
|
|
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
```
|
|
|
|
The parent chart's resulting values would be:
|
|
|
|
The parent chart's resulting values would be:
|
|
|
|
|
|
|
|
|
|
|
|
@ -468,7 +468,7 @@ Furthermore, A is dependent on chart B that creates objects
|
|
|
|
- replicaset "B-ReplicaSet"
|
|
|
|
- replicaset "B-ReplicaSet"
|
|
|
|
- service "B-Service"
|
|
|
|
- service "B-Service"
|
|
|
|
|
|
|
|
|
|
|
|
After installation/upgrade of chart A a single Helm release is created/modified. The release will
|
|
|
|
After installation/upgrade of chart A a single Helm release is created/modified. The release will
|
|
|
|
create/update all of the above Kubernetes objects in the following order:
|
|
|
|
create/update all of the above Kubernetes objects in the following order:
|
|
|
|
|
|
|
|
|
|
|
|
- A-Namespace
|
|
|
|
- A-Namespace
|
|
|
|
@ -478,16 +478,16 @@ create/update all of the above Kubernetes objects in the following order:
|
|
|
|
- A-Service
|
|
|
|
- A-Service
|
|
|
|
- B-Service
|
|
|
|
- B-Service
|
|
|
|
|
|
|
|
|
|
|
|
This is because when Helm installs/upgrades charts,
|
|
|
|
This is because when Helm installs/upgrades charts,
|
|
|
|
the Kubernetes objects from the charts and all its dependencies are
|
|
|
|
the Kubernetes objects from the charts and all its dependencies are
|
|
|
|
|
|
|
|
|
|
|
|
- aggregrated into a single set; then
|
|
|
|
- aggregrated into a single set; then
|
|
|
|
- sorted by type followed by name; and then
|
|
|
|
- sorted by type followed by name; and then
|
|
|
|
- created/updated in that order.
|
|
|
|
- created/updated in that order.
|
|
|
|
|
|
|
|
|
|
|
|
Hence a single release is created with all the objects for the chart and its dependencies.
|
|
|
|
Hence a single release is created with all the objects for the chart and its dependencies.
|
|
|
|
|
|
|
|
|
|
|
|
The install order of Kubernetes types is given by the enumeration InstallOrder in kind_sorter.go
|
|
|
|
The install order of Kubernetes types is given by the enumeration InstallOrder in kind_sorter.go
|
|
|
|
(see [the Helm source file](https://github.com/kubernetes/helm/blob/master/pkg/tiller/kind_sorter.go#L26)).
|
|
|
|
(see [the Helm source file](https://github.com/kubernetes/helm/blob/master/pkg/tiller/kind_sorter.go#L26)).
|
|
|
|
|
|
|
|
|
|
|
|
## Templates and Values
|
|
|
|
## Templates and Values
|
|
|
|
@ -574,16 +574,11 @@ cannot be overridden. As with all values, the names are _case
|
|
|
|
sensitive_.
|
|
|
|
sensitive_.
|
|
|
|
|
|
|
|
|
|
|
|
- `Release.Name`: The name of the release (not the chart)
|
|
|
|
- `Release.Name`: The name of the release (not the chart)
|
|
|
|
- `Release.Time`: The time the chart release was last updated. This will
|
|
|
|
|
|
|
|
match the `Last Released` time on a Release object.
|
|
|
|
|
|
|
|
- `Release.Namespace`: The namespace the chart was released to.
|
|
|
|
|
|
|
|
- `Release.Service`: The service that conducted the release. Usually
|
|
|
|
- `Release.Service`: The service that conducted the release. Usually
|
|
|
|
this is `Tiller`.
|
|
|
|
this is `Tiller`.
|
|
|
|
- `Release.IsUpgrade`: This is set to true if the current operation is an upgrade or rollback.
|
|
|
|
- `Release.IsUpgrade`: This is set to true if the current operation is an upgrade or rollback.
|
|
|
|
- `Release.IsInstall`: This is set to true if the current operation is an
|
|
|
|
- `Release.IsInstall`: This is set to true if the current operation is an
|
|
|
|
install.
|
|
|
|
install.
|
|
|
|
- `Release.Revision`: The revision number. It begins at 1, and increments with
|
|
|
|
|
|
|
|
each `helm upgrade`.
|
|
|
|
|
|
|
|
- `Chart`: The contents of the `Chart.yaml`. Thus, the chart version is
|
|
|
|
- `Chart`: The contents of the `Chart.yaml`. Thus, the chart version is
|
|
|
|
obtainable as `Chart.Version` and the maintainers are in
|
|
|
|
obtainable as `Chart.Version` and the maintainers are in
|
|
|
|
`Chart.Maintainers`.
|
|
|
|
`Chart.Maintainers`.
|
|
|
|
|
Adam Reese
7 years ago
committed by
GitHub