- #GCLOUD SSH TUNNEL HOW TO#
- #GCLOUD SSH TUNNEL INSTALL#
- #GCLOUD SSH TUNNEL SOFTWARE#
- #GCLOUD SSH TUNNEL CODE#
- #GCLOUD SSH TUNNEL SERIES#
You to create and download a credential file that will let you use the No account file specified in the Packer configuration file. The service account will be used automatically by Packer as long as there is
$ gcloud iam service-accounts create packer \ -project YOUR_GCP_PROJECT \ -description = "Packer Service Account" \ -display-name = "Packer Service Account" $ gcloud projects add-iam-policy-binding YOUR_GCP_PROJECT \ -member \ -role =roles/1 $ gcloud projects add-iam-policy-binding YOUR_GCP_PROJECT \ -member \ -role =roles/iam.serviceAccountUser $ gcloud projects add-iam-policy-binding YOUR_GCP_PROJECT \ -member \ -role =roles/iap.tunnelResourceAccessor $ gcloud compute instances create INSTANCE-NAME \ -project YOUR_GCP_PROJECT \ -image-family ubuntu-2004-lts \ -image-project ubuntu-os-cloud \ -network YOUR_GCP_NETWORK \ -zone YOUR_GCP_ZONE \ -service-account \ -scopes = "" It is recommended that you create a custom service account for Packer and assign itĬompute Instance Admin (v1) & Service Account User roles.įor gcloud, you can run the following commands: Packer to authenticate to Google Cloud without having to bake in a separate If you run the googlecompute Packer builder on GCE or GKE, you canĬonfigure that instance or cluster to use a Google Service
Must have at least Compute Instance Admin (v1) & Service Account User roles You don't need to specify an account file if you are using this method.
#GCLOUD SSH TUNNEL INSTALL#
Need to install the Google Cloud SDK and authenticate using User Application Default If you run the googlecompute Packer builder locally on your workstation, you will
Running the googlecompute Packer builder on Google Cloud with aĪccount. As our user accounts follow HR processes, we are ensured of no rogue employees having access to our resources.Authenticating with Google Cloud services requires either a User Application Default Credentials,Ī JSON Service Account Key or an Access Token. For this to be effective, you might want to run a proxy on the instance.īy using the combination of Identity Aware Proxy and bastion principle with temporary SSH credentials we ensure secure, auditable access to our bastion host.
#GCLOUD SSH TUNNEL HOW TO#
See for additional SSH options, and for example on how to use this as an SSH tunnel to your environment. Now finally we can connect to our instance, tunnelled through in identity aware proxy using the following command: Next to providing the user control to the Identity Aware Proxy, we need to allow the user "roles/1" to the instance (at least on instance level) we can apply the following resources: As per best practice, we will deploy the compute instance with custom service account. This can be achieved by using the following terraform resource:īefore moving to the required permission at the instance level, let’s construct a compute instance which we can use as a bastion host.
#GCLOUD SSH TUNNEL CODE#
Or the following code when using terraform: User controls for accessing the Identity Aware Proxyīy providing the role “roles/iap.tunnelResourceAccessor” we can control who has access to the identity aware proxy. To provide access from the Identity Aware Proxy we should create a firewall rule which allows the applicable IP ranges access (35.235.240.0/20), see This solution is depicted in the diagram below: Note that we do need to allow traffic from the IP ranges which Google uses to host the Identity Aware Proxy infrastructure into our VPC. Although good security practices are still preferred, it does limit the exposure of instances on the internet. When connecting through an Identity Aware Proxy, we do not have to provide the instance with an public IP address. This would expose the instance publicly on the internet, and as such we will need to control the exposure of this instance on the public internet. Traditionally, we would deploy a bastion host / jump box with a public IP address. When using GCP, a combination of Identity Aware Proxy and temporary ssh credentials ensure us to achieve this. We never want to maintain SSH keys, or even more costly, a VPN infrastructure for secure access. SSH is often still used, for example when developers need to access remote environments.
Secure access to environments within the cloud is always a top priority for Merapar when deploying new projects. Why? Because we think it’s fun to share knowledge and to learn from others in the industry.
#GCLOUD SSH TUNNEL SERIES#
In a series of blog posts we will focus on some of the best practices we use within Merapar to evolve our DevOps practices we have built around the GCP platform.
#GCLOUD SSH TUNNEL SOFTWARE#
By Tom de Brouwer, Merapar Software Architect.
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