Documentation for how to install latest pre-release versions of Crossplane helm chart and CLI (#1009)

* restore crossplane install instructions for master channel

Signed-off-by: Jared Watts <jbw976@gmail.com>

* Add more guidance for how to install Crossplane CLI from master channel

Signed-off-by: Jared Watts <jbw976@gmail.com>

---------

Signed-off-by: Jared Watts <jbw976@gmail.com>

Author: jbw976

content/master/cli/_index.md

@@ -58,7 +58,15 @@ the `XP_CHANNEL` and `XP_VERSION` environmental variables.
 By default the CLI installs from the `XP_CHANNEL` named `stable` and the
 `XP_VERSION` of `current`, matching the most recent stable release.
 
-For example, to install CLI version `v1.14.0` add `XP_VERSION=v1.14.0` to the
+For example, to install CLI version `v1.20.0` add `XP_VERSION=v1.20.0` to the
 download script curl command:
 
-`curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_VERSION=v1.14.0 sh`
+```shell
+curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_VERSION=v1.20.0 sh
+```
+
+To install the CLI from the `master` channel add `XP_CHANNEL=master`:
+
+```shell
+curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_CHANNEL=master sh
+```

content/master/get-started/install.md

@@ -87,7 +87,7 @@ crossplane-rbac-manager-86d9b5cf9f-2vc4s   1/1     Running   0          26m
 Crossplane supports customizations at install time by configuring the Helm
 chart.
 
-Read [the Helm chart README](https://github.com/crossplane/crossplane/blob/v2/cluster/charts/crossplane/README.md#configuration)
+Read [the Helm chart README](https://github.com/crossplane/crossplane/blob/main/cluster/charts/crossplane/README.md#configuration)
 to learn what customizations are available.
 
 Read [the Helm documentation](https://helm.sh/docs/) to learn how to run Helm
@@ -118,6 +118,43 @@ Set these flags either in the `values.yaml` file or at install time using the
 `--set` flag, for example: `--set
 args='{"--enable-composition-functions","--enable-composition-webhook-schema-validation"}'`.
 
+## Install pre-release Crossplane versions
+
+Install pre-release versions of Crossplane from the `master` Crossplane Helm channel.
+
+Versions in the `master` channel are under active development and may be unstable.
+
+{{< hint "warning" >}}
+Don't use Crossplane `master` releases in production. Only use `stable` channel.
+Only use `master` for testing and development.
+{{< /hint >}}
+
+### Add the Crossplane master Helm repository
+
+Add the Crossplane repository with the `helm repo add` command.
+
+```shell
+helm repo add crossplane-master https://charts.crossplane.io/master/
+```
+
+Update the
+local Helm chart cache with `helm repo update`.
+```shell
+helm repo update
+```
+
+### Install the Crossplane master Helm chart
+
+Install the Crossplane Helm chart from the `master` channel with `helm install`. Use the
+`--devel` flag to install the latest pre-release version.
+
+```shell
+helm install crossplane \
+--namespace crossplane-system \
+--create-namespace crossplane-master/crossplane \
+--devel
+```
+
 ## Build and install from source
 
 Building Crossplane from the source code gives you complete control over the build and

content/v2.0/cli/_index.md

@@ -58,7 +58,15 @@ the `XP_CHANNEL` and `XP_VERSION` environmental variables.
 By default the CLI installs from the `XP_CHANNEL` named `stable` and the
 `XP_VERSION` of `current`, matching the most recent stable release.
 
-For example, to install CLI version `v1.14.0` add `XP_VERSION=v1.14.0` to the
+For example, to install CLI version `v1.20.0` add `XP_VERSION=v1.20.0` to the
 download script curl command:
 
-`curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_VERSION=v1.14.0 sh`
+```shell
+curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_VERSION=v1.20.0 sh
+```
+
+To install the CLI from the `master` channel add `XP_CHANNEL=master`:
+
+```shell
+curl -sL "https://raw.githubusercontent.com/crossplane/crossplane/main/install.sh" | XP_CHANNEL=master sh
+```

content/v2.0/get-started/install.md

@@ -87,7 +87,7 @@ crossplane-rbac-manager-86d9b5cf9f-2vc4s   1/1     Running   0          26m
 Crossplane supports customizations at install time by configuring the Helm
 chart.
 
-Read [the Helm chart README](https://github.com/crossplane/crossplane/blob/v2/cluster/charts/crossplane/README.md#configuration)
+Read [the Helm chart README](https://github.com/crossplane/crossplane/blob/main/cluster/charts/crossplane/README.md#configuration)
 to learn what customizations are available.
 
 Read [the Helm documentation](https://helm.sh/docs/) to learn how to run Helm
@@ -118,6 +118,43 @@ Set these flags either in the `values.yaml` file or at install time using the
 `--set` flag, for example: `--set
 args='{"--enable-composition-functions","--enable-composition-webhook-schema-validation"}'`.
 
+## Install pre-release Crossplane versions
+
+Install pre-release versions of Crossplane from the `master` Crossplane Helm channel.
+
+Versions in the `master` channel are under active development and may be unstable.
+
+{{< hint "warning" >}}
+Don't use Crossplane `master` releases in production. Only use `stable` channel.
+Only use `master` for testing and development.
+{{< /hint >}}
+
+### Add the Crossplane master Helm repository
+
+Add the Crossplane repository with the `helm repo add` command.
+
+```shell
+helm repo add crossplane-master https://charts.crossplane.io/master/
+```
+
+Update the
+local Helm chart cache with `helm repo update`.
+```shell
+helm repo update
+```
+
+### Install the Crossplane master Helm chart
+
+Install the Crossplane Helm chart from the `master` channel with `helm install`. Use the
+`--devel` flag to install the latest pre-release version.
+
+```shell
+helm install crossplane \
+--namespace crossplane-system \
+--create-namespace crossplane-master/crossplane \
+--devel
+```
+
 ## Build and install from source
 
 Building Crossplane from the source code gives you complete control over the build and