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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
# GitLab Helm Chart
This is the official way to install GitLab on a cloud native environment.
NOTE: **Kubernetes experience required:**
Our Helm charts are recommended for those who are familiar with Kubernetes.
If you're not sure if Kubernetes is for you, our
[Omnibus GitLab packages](../README.md#install-gitlab-using-the-omnibus-gitlab-package-recommended)
are mature, scalable, support [high availability](../../administration/high_availability/README.md)
and are used today on GitLab.com.
## Introduction
The `gitlab` chart is the best way to operate GitLab on Kubernetes. This chart
contains all the required components to get started, and can scale to large deployments.
The default deployment includes:
- Core GitLab components: Unicorn, Shell, Workhorse, Registry, Sidekiq, and Gitaly
- Optional dependencies: Postgres, Redis, Minio
- An auto-scaling, unprivileged [GitLab Runner](https://docs.gitlab.com/runner/) using the Kubernetes executor
- Automatically provisioned SSL via [Let's Encrypt](https://letsencrypt.org/).
## Limitations
Some features of GitLab are not currently available:
- [GitLab Pages](https://gitlab.com/charts/gitlab/issues/37)
- [GitLab Geo](https://gitlab.com/charts/gitlab/issues/8)
- [No in-cluster HA database](https://gitlab.com/charts/gitlab/issues/48)
- MySQL will not be supported, as support is [deprecated within GitLab](https://docs.gitlab.com/omnibus/settings/database.html#using-a-mysql-database-management-server-enterprise-edition-only)
## Installing GitLab using the Helm Chart
The `gitlab` chart includes all required dependencies, and takes a few minutes
to deploy.
TIP: **Tip:**
For production deployments, we strongly recommend using the
[detailed installation instructions](https://gitlab.com/charts/gitlab/blob/master/doc/installation/index.md)
utilizing [external Postgres, Redis, and object storage](https://gitlab.com/charts/gitlab/tree/master/doc/advanced) services.
### Requirements
In order to deploy GitLab on Kubernetes, the following are required:
1. `helm` and `kubectl` [installed on your computer](preparation/tools_installation.md).
1. A Kubernetes cluster, version 1.8 or higher. 6vCPU and 16GB of RAM is recommended.
- [Google GKE](https://cloud.google.com/kubernetes-engine/docs/how-to/creating-a-container-cluster)
- [Amazon EKS](https://docs.aws.amazon.com/eks/latest/userguide/getting-started.html)
- [Microsoft AKS](https://docs.microsoft.com/en-us/azure/aks/kubernetes-walkthrough-portal)
1. A [wildcard DNS entry and external IP address](preparation/networking.md)
1. [Authenticate and connect](preparation/connect.md) to the cluster
1. Configure and initialize [Helm Tiller](preparation/tiller.md).
### Deployment of GitLab to Kubernetes
To deploy GitLab, the following three parameters are required:
- `global.hosts.domain`: the [base domain](preparation/networking.md) of the
wildcard host entry. For example, `example.com` if the wild card entry is
`*.example.com`.
- `global.hosts.externalIP`: the [external IP](preparation/networking.md) which
the wildcard DNS resolves to.
- `certmanager-issuer.email`: the email address to use when requesting new SSL
certificates from Let's Encrypt.
NOTE: **Note:**
For deployments to Amazon EKS, there are
[additional configuration requirements](preparation/eks.md). A full list of
configuration options is [also available](https://gitlab.com/charts/gitlab/blob/master/doc/installation/command-line-options.md).
Once you have all of your configuration options collected, you can get any
dependencies and run helm. In this example, the helm release is named "gitlab":
```sh
helm repo add gitlab https://charts.gitlab.io/
helm repo update
helm upgrade --install gitlab gitlab/gitlab \
--timeout 600 \
--set global.hosts.domain=example.com \
--set global.hosts.externalIP=10.10.10.10 \
--set certmanager-issuer.email=email@example.com
```
### Monitoring the Deployment
This will output the list of resources installed once the deployment finishes,
which may take 5-10 minutes.
The status of the deployment can be checked by running `helm status gitlab`
which can also be done while the deployment is taking place if you run the
command in another terminal.
### Initial login
You can access the GitLab instance by visiting the domain name beginning with
`gitlab.` followed by the domain specified during installation. From the example
above, the URL would be `https://gitlab.example.com`.
If you manually created the secret for initial root password, you
can use that to sign in as `root` user. If not, GitLab automatically
created a random password for `root` user. This can be extracted by the
following command (replace `<name>` by name of the release - which is `gitlab`
if you used the command above):
```sh
kubectl get secret <name>-gitlab-initial-root-password -ojsonpath={.data.password} | base64 --decode ; echo
```
### Outgoing email
By default outgoing email is disabled. To enable it, provide details for your SMTP server
using the `global.smtp` and `global.email` settings. You can find details for these settings in the
[command line options](https://gitlab.com/charts/gitlab/blob/master/doc/installation/command-line-options.md#email-configuration).
If your SMTP server requires authentication make sure to read the section on providing
your password in the [secrets documentation](https://gitlab.com/charts/gitlab/blob/master/doc/installation/secrets.md#smtp-password).
You can disable authentication settings with `--set global.smtp.authentication=""`.
If your Kubernetes cluster is on GKE, be aware that SMTP port [25 is blocked](https://cloud.google.com/compute/docs/tutorials/sending-mail/#using_standard_email_ports).
### Deploying the Community Edition
To deploy the Community Edition, include these options in your `helm install` command:
```sh
--set gitlab.migrations.image.repository=registry.gitlab.com/gitlab-org/build/cng/gitlab-rails-ce
--set gitlab.sidekiq.image.repository=registry.gitlab.com/gitlab-org/build/cng/gitlab-sidekiq-ce
--set gitlab.unicorn.image.repository=registry.gitlab.com/gitlab-org/build/cng/gitlab-unicorn-ce
--set gitlab.unicorn.workhorse.image=registry.gitlab.com/gitlab-org/build/cng/gitlab-workhorse-ce
--set gitlab.task-runner.image.repository=registry.gitlab.com/gitlab-org/build/cng/gitlab-task-runner-ce
```
## Updating GitLab using the Helm Chart
Once your GitLab Chart is installed, configuration changes and chart updates
should be done using `helm upgrade`:
```sh
helm repo update
helm upgrade --reuse-values gitlab gitlab/gitlab
```
## Uninstalling GitLab using the Helm Chart
To uninstall the GitLab Chart, run the following:
```sh
helm delete gitlab
```
[kube-srv]: https://kubernetes.io/docs/concepts/services-networking/service/#publishing-services---service-types
[storageclass]: https://kubernetes.io/docs/concepts/storage/persistent-volumes/#storageclasses
|