### Navigate to Example Directory

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Change the current directory to the example's directory. This command ensures you are in the correct location before proceeding with the setup.

```bash
[[ `basename $PWD` != example-custom-machine-types ]] && cd example-custom-machine-types
```

--------------------------------

### Navigate to Example Directory

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/README.md

Change to the specific example directory you want to work with.

```bash
cd EXAMPLE_NAME
```

--------------------------------

### Navigate to Example Directory

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Ensures you are in the correct example directory. If not, it changes to 'example-gke-k8s-helm'.

```bash
[[ `basename $PWD` != example-gke-k8s-helm ]] && cd example-gke-k8s-helm
```

--------------------------------

### Change to Example Directory

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Navigate to the specific example directory. This command ensures you are in the correct working directory for the example.

```bash
[[ `basename $PWD` != example-gke-k8s-multi-region ]] && cd example-gke-k8s-multi-region
```

--------------------------------

### Navigate to Example Directory

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-service-lb/README.md

Change to the example directory to begin. This command ensures you are in the correct working directory.

```bash
[[ `basename $PWD` != example-gke-k8s-service-lb ]] && cd example-gke-k8s-service-lb
```

--------------------------------

### Install Terraform

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Installs Terraform using a provided script. Refer to terraform.io for alternative installation methods.

```bash
../terraform-install.sh
```

--------------------------------

### Install Terraform Helm Provider

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Downloads and installs the Terraform Helm provider. This is a one-time setup for Terraform to manage Helm resources.

```bash
( 
  set -x; cd "$(mktemp -d)" && \
  curl -fsSLO "https://github.com/mcuadros/terraform-provider-helm/releases/download/v0.5.1/terraform-provider-helm_v0.5.1_$(uname | tr '[:upper:]' '[:lower:]')_amd64.tar.gz" && \
  tar -xvf terraform-provider-helm*.tar.gz && \
  mkdir -p ~/.terraform.d/plugins/ && \
  mv terraform-provider-helm*/terraform-provider-helm ~/.terraform.d/plugins/
)
```

--------------------------------

### Install Helm

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Installs the latest version of Helm and initializes the client. This involves downloading a script, making it executable, running it, and then initializing Helm.

```bash
curl https://raw.githubusercontent.com/kubernetes/helm/master/scripts/get > get_helm.sh
chmod 700 get_helm.sh
./get_helm.sh

helm init --client-only
```

--------------------------------

### Clone Terraform Examples Repository

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/README.md

Use this command to clone the repository and initialize submodules.

```bash
git clone https://github.com/GoogleCloudPlatform/terraform-google-examples.git
cd terraform-google-examples
git submodule init && git submodule update
```

--------------------------------

### Check HCL Formatting Differences

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/CONTRIBUTING.md

Use this command to compare your Terraform files with the output of `hclfmt` to ensure adherence to the project's style guide. It highlights any formatting discrepancies.

```bash
diff -B <( cat *.tf ) <( hclfmt *.tf )
```

--------------------------------

### Get GKE Cluster Credentials

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-service-lb/README.md

Retrieve the credentials for your GKE cluster and configure kubectl to interact with it.

```bash
gcloud container clusters get-credentials $(terraform output cluster_name) --zone $(terraform output cluster_zone)
```

--------------------------------

### Get Application Endpoint URL

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Outputs the endpoint URL for the deployed application, which can be used to access it via a web browser.

```bash
echo $(terraform output endpoint)
```

--------------------------------

### Undelete Cloud Endpoints Service

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Undeletes a previously deleted Cloud Endpoints service named 'drupal'. This is necessary if the example was run recently and the service was removed.

```bash
gcloud endpoints services undelete drupal.endpoints.$(gcloud config get-value project).cloud.goog
```

--------------------------------

### Test Load Balancer Provisioning

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Executes a script to verify that the load balancer has been successfully provisioned.

```bash
./test.sh
```

--------------------------------

### Configure Terraform Environment

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Sets up the environment for Terraform by logging in to Google Cloud if not already authenticated and exporting the Google Cloud project ID.

```bash
[[ $CLOUD_SHELL ]] || gcloud auth application-default login
export GOOGLE_PROJECT=$(gcloud config get-value project)
```

--------------------------------

### Initialize and Apply Terraform Configuration

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Initializes the Terraform working directory and applies the defined infrastructure configuration.

```bash
terraform init
terraform apply
```

--------------------------------

### Display Login Credentials

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Outputs the username and password for logging into the deployed application's interface.

```bash
echo User: $(terraform output drupal_user)
echo Password: $(terraform output drupal_password)
```

--------------------------------

### Verify Kubectl Connectivity

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-service-lb/README.md

Check kubectl connectivity by listing pods in the staging namespace.

```bash
kubectl get pods -n staging
```

--------------------------------

### Configure GCS Remote Backend

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Sets up a Google Cloud Storage bucket for Terraform state file storage and defines the prefix for the state file. This ensures state is stored remotely and securely.

```bash
BUCKET=${GOOGLE_PROJECT}-terraform
```

```bash
gsutil mb gs://${BUCKET}
```

```bash
PREFIX=tf-es-custom-machine/state
```

```hcl
cat > backend.tf <<EOF
terraform {
  backend "gcs" {
    bucket     = "${BUCKET}"
    prefix     = "${PREFIX}"
  }
}
EOF
```

--------------------------------

### Create terraform.tfvars

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Creates the terraform.tfvars file, populating it with the Helm version and the user's email address from gcloud config.

```bash
cat > terraform.tfvars <<EOF
helm_version = "$(helm version -c --short | egrep -o 'v[0-9]*.[0-9]*.[0-9]*')"
acme_email = "$(gcloud config get-value account)"
EOF

cat terraform.tfvars
```

--------------------------------

### Verify kubectl and Helm Connectivity

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Verifies connectivity to the GKE cluster by listing pods using kubectl and listing deployed Helm releases.

```bash
kubectl get pods

helm list
```

--------------------------------

### SSH into Bastion Host

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Establishes an SSH connection to the bastion host. This command sets up SSH agent forwarding, adds your SSH key, and retrieves the bastion host's address from Terraform output.

```bash
eval $(ssh-agent)
```

```bash
ssh-add ~/.ssh/google_compute_engine
```

```bash
eval $(terraform output bastion)
```

--------------------------------

### Set Google Cloud Project

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Sets the active Google Cloud project for subsequent gcloud commands. Replace 'YOUR_PROJECT' with your actual project ID.

```bash
PROJECT=YOUR_PROJECT

gcloud config set project ${PROJECT}
```

--------------------------------

### Set Project ID

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Configures the Google Cloud project ID for subsequent commands. Replace YOUR_PROJECT with your actual project ID.

```bash
PROJECT=YOUR_PROJECT
```

```bash
gcloud config set project ${PROJECT}
```

--------------------------------

### Verify Load Balancer Response

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-service-lb/README.md

Send a curl request to the provisioned load balancer's IP address to verify its response.

```bash
curl http://$(terraform output load-balancer-ip)
```

--------------------------------

### Enable Service Management API

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Enables the Service Management API, which is required for creating Cloud Endpoints services.

```bash
gcloud services enable servicemanagement.googleapis.com
```

--------------------------------

### SSH into Custom Machine

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Connects to the custom machine instance created by Terraform. Assumes the instance is named 'tf-custom-1'.

```bash
ssh tf-custom-1
```

--------------------------------

### Retrieve Load Balancer IP Address

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Outputs the IP address of the provisioned load balancer, which can be used to access the deployed application.

```bash
echo http://$(terraform output load-balancer-ip)
```

--------------------------------

### Cleanup GKE and Helm Resources

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-helm/README.md

Cleans up the deployed resources by first destroying the 'nginx-ingress' Helm release to ensure proper cleanup of associated network resources, followed by a full Terraform destroy.

```bash
terraform destroy -input=false -auto-approve -target helm_release.nginx-ingress && sleep 60 && \
terraform destroy
```

--------------------------------

### Format HCL Files with hclfmt

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/CONTRIBUTING.md

Apply the `hclfmt` tool to automatically format your Terraform files according to the project's style. This command writes the formatted code back to the original files.

```bash
hclfmt -w *.tf
```

--------------------------------

### Verify External IP

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Checks the external IP address of the NAT gateway by making a request to an external service. This helps verify that traffic is routed through the NAT gateway as expected.

```bash
curl http://ipinfo.io/ip
```

--------------------------------

### Destroy Terraform Resources

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-gke-k8s-multi-region/README.md

Removes all infrastructure resources that were created by the Terraform configuration.

```bash
terraform destroy
```

--------------------------------

### Exit SSH Sessions

Source: https://github.com/googlecloudplatform/terraform-google-examples/blob/master/example-custom-machine-types/README.md

Exits the current SSH session. This command should be run after you are finished interacting with the remote machine.

```bash
exit
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.