Step 1: Create a GKE cluster

This step explains how to set up your shell environment and create a GKE cluster in your Google Cloud Platform (GCP) project.

Set up your terminal shell

The gcloud tool provides the primary command-line interface for GCP, and kubectl provides the primary command-line interface for running commands against Kubernetes clusters.

Be sure you have gcloud and kubectl installed in your local shell. The gcloud tool provides the primary command-line interface for GCP, and kubectl provides the primary command-line interface for running commands against Kubernetes clusters.
```
gcloud -h
kubectl -h
```
If you do not have these utilities installed, install them now:
1. Install the Cloud SDK, which includes the gcloud command-line tool.
2. After installing Cloud SDK, install the kubectl command-line tool by running the following command:
Use the gcloud tool to configure two default settings: your default project and compute region. Configuring these settings makes it easier to run gcloud commands, because gcloud requires that you specify the project and compute zone in which you want to work.
To list the current settings:
```
gcloud config list
```
If a project and/or compute zone is not listed, then you need to add them with the commands shown below. If, from the list output, you determine that you need to switch the current settings to reflect your project and compute region (or zone), you can also use these commands:
```
gcloud config set project project-id
gcloud config set compute/region compute-region
gcloud config set compute/zone compute-zone
```
Where project-id is the name of your GCP project, compute-region is the name of a GCP compute region, and compute-zone is the name of a GCP compute zone. For example: compute/region us-central1. For a list of compute regions and zones, see Available regions and zones.

Create a GKE cluster

In this step, you will create a Kubernetes cluster in your GCP project (the project you set with the gcloud config command).

NOTE: The following command assumes you set the gcloud configuration for the compute region and/or zone, as explained in the previous steps. If you did not set the configuration, then you will need to add the --region "compute-region" and/or --zone "compute-zone" parameter to the command.

Execute the following command to create the cluster. The machine type, number of nodes, and other settings specified in the command create a minimally configured cluster suitable for a trial Apigee hybrid installation.

gcloud container clusters create cluster-name \
--machine-type "n1-standard-4" --num-nodes "3" --enable-autoscaling --min-nodes "3" --max-nodes "6"

Where cluster-name is the name you choose for the cluster.

Cluster creation can take a few minutes. Upon success, you will see output similar to the following with a status of RUNNING:

NAME           LOCATION       MASTER_VERSION  MASTER_IP     MACHINE_TYPE   NODE_VERSION   NUM_NODES  STATUS
apigee-hybrid  us-central1-a  1.14.10-gke.27   35.222.54.89  n1-standard-4  1.14.10-gke.27          RUNNING

Set the current context

A context is a group of access parameters. Each context contains a Kubernetes cluster, a user and a namespace. The current context is the cluster that is currently the default for kubectl: all kubectl commands run against that cluster.

Make sure the current gcloud context is set to the cluster you just created.

First, list the contexts to determine which is the current context. In the following example, the current context is gke_hybrid-project_us-central1-a_apigee-hybrid. The name includes the name of a GCP project (hybrid-project), a region or zone (us-central1-a), and a cluster name (apigee-hybrid):

kubectl config get-contexts
CURRENT   NAME                                             CLUSTER                                          AUTHINFO                                           NAMESPACE
*         gke_hybrid-project_us-central1-a_apigee-hybrid   gke_hybrid-project_us-central1-a_apigee-hybrid   gke_hybrid-project_us-central1-a_apigee-hybrid
          gke_apigee-project_us-west1-a_apigee-cluster     gke_apigee-project_us-west1-a_apigee-cluster     gke_apigee-project_us-west1-a_apigee-cluster

If necessary, set the current context to the cluster you just created (the cluster into which you intend to install Apigee hybrid). Assuming the previous get-contexts output, if the cluster name you created were apigee-cluster in the region us-west1, you would switch to the gke_apigee-project_us-west1-a_apigee-cluster context, as follows:
```
kubectl config use-context gke_apigee-project_us-west1-a_apigee-cluster
```
Where gke_apigee-project_us-west1-a_apigee-cluster is the name of the context to switch to.
Check the current context to be sure it is set to the intended cluster. For example:
```
kubectl config current-context
 gke_apigee-project_us-west1-a_apigee-cluster
```

Grant cluster credentials

Cluster credentials give you access to the containers running in the cluster. Fetch your credentials and grant yourself the cluster-admin role:

Fetch the credentials:
```
gcloud container clusters get-credentials cluster-name
```
Where cluster-name is the name is the name of the cluster you created (the cluster into which you intend to install Apigee hybrid).

Set the cluster role binding. Execute this command exactly as shown:

kubectl create clusterrolebinding cluster-admin-binding \
--clusterrole cluster-admin --user $(gcloud config get-value account)

Summary

You now have a Kubernetes cluster running in your GCP project. Your shell environment is set up, and you are ready to install the Apigee hybrid runtime plane software on your local machine.

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