1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
---
stage: Configure
group: Configure
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#designated-technical-writers
---
# Adding GKE clusters
GitLab supports adding new and existing GKE clusters.
## GKE requirements
Before creating your first cluster on Google GKE with GitLab's integration, make sure the following
requirements are met:
- A [billing account](https://cloud.google.com/billing/docs/how-to/manage-billing-account)
set up with access.
- The Kubernetes Engine API and related service are enabled. It should work immediately but may
take up to 10 minutes after you create a project. For more information see the
["Before you begin" section of the Kubernetes Engine docs](https://cloud.google.com/kubernetes-engine/docs/quickstart#before-you-begin).
## New GKE cluster
Starting from [GitLab 12.4](https://gitlab.com/gitlab-org/gitlab/-/issues/25925), all the GKE clusters
provisioned by GitLab are [VPC-native](https://cloud.google.com/kubernetes-engine/docs/how-to/alias-ips).
Note the following:
- The [Google authentication integration](../../../integration/google.md) must be enabled in GitLab
at the instance level. If that's not the case, ask your GitLab administrator to enable it. On
GitLab.com, this is enabled.
- Starting from [GitLab 12.1](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/55902), all GKE clusters
created by GitLab are RBAC-enabled. Take a look at the [RBAC section](add_remove_clusters.md#rbac-cluster-resources) for
more information.
- Starting from [GitLab 12.5](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/18341), the
cluster's pod address IP range is set to `/16` instead of the regular `/14`. `/16` is a CIDR
notation.
- GitLab requires basic authentication enabled and a client certificate issued for the cluster to
set up an [initial service account](add_remove_clusters.md#access-controls). In [GitLab versions
11.10 and later](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/58208), the cluster creation process
explicitly requests GKE to create clusters with basic authentication enabled and a client
certificate.
### Creating the cluster on GKE
To create and add a new Kubernetes cluster to your project, group, or instance:
1. Navigate to your:
- Project's **{cloud-gear}** **Operations > Kubernetes** page, for a project-level cluster.
- Group's **{cloud-gear}** **Kubernetes** page, for a group-level cluster.
- **Admin Area >** **{cloud-gear}** **Kubernetes** page, for an instance-level cluster.
1. Click **Add Kubernetes cluster**.
1. Under the **Create new cluster** tab, click **Google GKE**.
1. Connect your Google account if you haven't done already by clicking the
**Sign in with Google** button.
1. Choose your cluster's settings:
- **Kubernetes cluster name** - The name you wish to give the cluster.
- **Environment scope** - The [associated environment](index.md#setting-the-environment-scope) to this cluster.
- **Google Cloud Platform project** - Choose the project you created in your GCP
console to host the Kubernetes cluster. Learn more about
[Google Cloud Platform projects](https://cloud.google.com/resource-manager/docs/creating-managing-projects).
- **Zone** - Choose the [region zone](https://cloud.google.com/compute/docs/regions-zones/)
under which to create the cluster.
- **Number of nodes** - Enter the number of nodes you wish the cluster to have.
- **Machine type** - The [machine type](https://cloud.google.com/compute/docs/machine-types)
of the Virtual Machine instance to base the cluster on.
- **Enable Cloud Run for Anthos** - Check this if you want to use Cloud Run for Anthos for this cluster.
See the [Cloud Run for Anthos section](#cloud-run-for-anthos) for more information.
- **GitLab-managed cluster** - Leave this checked if you want GitLab to manage namespaces and service accounts for this cluster.
See the [Managed clusters section](index.md#gitlab-managed-clusters) for more information.
1. Finally, click the **Create Kubernetes cluster** button.
After a couple of minutes, your cluster is ready. You can now proceed
to install some [pre-defined applications](index.md#installing-applications).
### Cloud Run for Anthos
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/16566) in GitLab 12.4.
You can choose to use Cloud Run for Anthos in place of installing Knative and Istio
separately after the cluster has been created. This means that Cloud Run
(Knative), Istio, and HTTP Load Balancing are enabled on the cluster at
create time and cannot be [installed or uninstalled](../../clusters/applications.md) separately.
## Existing GKE cluster
For information on adding an existing GKE cluster, see
[Existing Kubernetes cluster](add_remove_clusters.md#existing-kubernetes-cluster).
|
