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docs: Improve GKE instructions (#315)
This change improves GKE cluster creation instructions by adding a custom service account and new VPC network. It also integrates those instructions into the overall install instructions.
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| # Use an existing Kf cluster | ||
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| To use an existing cluster, it is assumed your cluster has the following: | ||
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| * Can run containers as root. | ||
| * Has at least 12 vCPUs. | ||
| * Has at least 45G of memory. | ||
| * Has a minimum of three nodes. | ||
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| ## Install dependencies | ||
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| `kf` uses Istio to route HTTP requests to the running applications and Knative | ||
| to deploy and scale applications. | ||
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| > Note: Installing Istio and Knative Serve can be skipped if you are [using | ||
| > Cloud Run on GKE](/docs/install/existing-cluster.md). | ||
| Install Istio: | ||
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| ```.sh | ||
| kubectl apply --filename | ||
| https://raw.githubusercontent.com/knative/serving/v0.6.1/third_party/istio-1.1.3/istio-crds.yaml | ||
| && \ | ||
| kubectl apply --filename | ||
| https://raw.githubusercontent.com/knative/serving/v0.6.1/third_party/istio-1.1.3/istio.yaml | ||
| && \ | ||
| kubectl label namespace default istio-injection=enabled | ||
| ``` | ||
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| Install Knative Serve: | ||
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| ```.sh | ||
| kubectl apply --filename | ||
| https://github.com/knative/serving/releases/download/v0.6.1/serving.yaml \ | ||
| --filename | ||
| https://github.com/knative/serving/releases/download/v0.6.1/monitoring.yaml \ | ||
| --filename | ||
| https://raw.githubusercontent.com/knative/serving/v0.6.1/third_party/config/build/clusterrole.yaml | ||
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| ## Confirm kubeconfig | ||
| The workstation you install `kf` on must have a valid `kubectl` configuration | ||
| located at `$HOME/.kube/config`. | ||
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| ### Next steps | ||
| Continue with the [install docs](docs/install.md) to install Kf into the cluster you just created. |
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| # Prepping GKE for KF | ||
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| This guide walks you through the installation of GKE with Cloud Run with the | ||
| intent of using it with `kf`. | ||
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| > Note: Installing Cloud Run is equivalent to installing Knative Serve and | ||
| > Istio. Therefore, only Knative Build is required after. | ||
| ## Before you begin | ||
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| This guide assumes you are using `bash` in a Mac or Linux environment; some | ||
| commands will need to be adjusted for use in a Windows environment. | ||
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| ### Install Cloud SDK | ||
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| 1. If you already have `gcloud` installed you can skip these steps. | ||
| 1. Download and install the gcloud command line tool: | ||
| https://cloud.google.com/sdk/install | ||
| 1. Authorize `gcloud`: | ||
| ```sh | ||
| gcloud auth login | ||
| ``` | ||
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| ### Setup environment variables | ||
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| We will use these environment variables to simplify the installation. | ||
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| ``` | ||
| export CLUSTER_NAME=[REPLACE] | ||
| export ZONE=[REPLACE] | ||
| export PROJECT_ID=[REPLACE] | ||
| export SERVICE_ACCOUNT=$CLUSTER_NAME@$PROJECT_ID.iam.gserviceaccount.com | ||
| export NETWORK=projects/$PROJECT_ID/global/networks/$CLUSTER_NAME | ||
| ``` | ||
| *NOTE: Replace the `[REPLACE]` value with the according values.* | ||
| ### Create a service account and give it `roles/storage.admin` on your project: | ||
| ```sh | ||
| gcloud iam service-accounts create $CLUSTER_NAME | ||
| gcloud projects add-iam-policy-binding $PROJECT_ID \ | ||
| --member=serviceAccount:$SERVICE_ACCOUNT \ | ||
| --role="roles/storage.admin" | ||
| ``` | ||
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| ### Create a network | ||
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| If you have an existing network you wish to use, customize the `NETWORK` env var set previously to point to your network and skip this step. | ||
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| ```sh | ||
| gcloud compute networks create $CLUSTER_NAME | ||
| ``` | ||
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| ### Create the Kubernetes cluster | ||
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| ```sh | ||
| gcloud beta container clusters create $CLUSTER_NAME \ | ||
| --zone $ZONE \ | ||
| --no-enable-basic-auth \ | ||
| --cluster-version "1.13.6-gke.13" \ | ||
| --machine-type "n1-standard-1" \ | ||
| --image-type "COS" \ | ||
| --disk-type "pd-standard" \ | ||
| --disk-size "100" \ | ||
| --metadata disable-legacy-endpoints=true \ | ||
| --service-account $SERVICE_ACCOUNT \ | ||
| --num-nodes "3" \ | ||
| --enable-stackdriver-kubernetes \ | ||
| --enable-ip-alias \ | ||
| --network $NETWORK \ | ||
| --default-max-pods-per-node "110" \ | ||
| --addons HorizontalPodAutoscaling,HttpLoadBalancing,Istio,CloudRun \ | ||
| --istio-config auth=MTLS_PERMISSIVE \ | ||
| --enable-autoupgrade \ | ||
| --enable-autorepair | ||
| ``` | ||
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| ### Target your cluster: | ||
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| ```sh | ||
| gcloud container clusters get-credentials $CLUSTER_NAME | ||
| ``` | ||
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| ### Next steps | ||
| Continue with the [install docs](/docs/install.md) to install Kf into the cluster you just created. |