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# Configuring Redis for GitLab HA
You can choose to install and manage Redis yourself, or you can use GitLab
Omnibus packages to help.
## Configure your own Redis server
If you're hosting GitLab on a cloud provider, you can optionally use a
managed service for Redis. For example, AWS offers a managed ElastiCache service
that runs Redis.
> **Note:** Redis does not require authentication by default. See
[Redis Security](http://redis.io/topics/security) documentation for more
information. We recommend using a combination of a Redis password and tight
firewall rules to secure your Redis service.
## Configure using Omnibus
1. Download/install GitLab Omnibus using **steps 1 and 2** from
[GitLab downloads](https://about.gitlab.com/downloads). Do not complete other
steps on the download page.
1. Create/edit `/etc/gitlab/gitlab.rb` and use the following configuration.
Be sure to change the `external_url` to match your eventual GitLab front-end
URL.
```ruby
external_url 'https://gitlab.example.com'
# Disable all components except PostgreSQL
redis['enable'] = true
bootstrap['enable'] = false
nginx['enable'] = false
unicorn['enable'] = false
sidekiq['enable'] = false
postgresql['enable'] = false
gitlab_workhorse['enable'] = false
mailroom['enable'] = false
# Redis configuration
redis['port'] = 6379
redis['bind'] = '0.0.0.0'
# If you wish to use Redis authentication (recommended)
redis['password'] = 'Redis Password'
```
1. Run `sudo gitlab-ctl reconfigure` to install and configure PostgreSQL.
> **Note**: This `reconfigure` step will result in some errors.
That's OK - don't be alarmed.
1. Run `touch /etc/gitlab/skip-auto-migrations` to prevent database migrations
from running on upgrade. Only the primary GitLab application server should
handle migrations.
---
Read more on high-availability configuration:
1. [Configure the database](database.md)
1. [Configure NFS](nfs.md)
1. [Configure the GitLab application servers](gitlab.md)
1. [Configure the load balancers](load_balancer.md)
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