2020-06-23 00:09:42 +05:30
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# Standalone PostgreSQL using Omnibus GitLab **(CORE ONLY)**
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If you wish to have your database service hosted separately from your GitLab
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application server(s), you can do this using the PostgreSQL binaries packaged
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together with Omnibus GitLab. This is recommended as part of our
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[reference architecture for up to 2,000 users](../reference_architectures/2k_users.md).
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## Setting it up
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1. SSH into the PostgreSQL server.
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1. [Download/install](https://about.gitlab.com/install/) the Omnibus GitLab
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package you want using **steps 1 and 2** from the GitLab downloads page.
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- Do not complete any other steps on the download page.
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1. Generate a password hash for PostgreSQL. This assumes you will use the default
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username of `gitlab` (recommended). The command will request a password
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and confirmation. Use the value that is output by this command in the next
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step as the value of `POSTGRESQL_PASSWORD_HASH`.
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```shell
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sudo gitlab-ctl pg-password-md5 gitlab
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```
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1. Edit `/etc/gitlab/gitlab.rb` and add the contents below, updating placeholder
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values appropriately.
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- `POSTGRESQL_PASSWORD_HASH` - The value output from the previous step
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- `APPLICATION_SERVER_IP_BLOCKS` - A space delimited list of IP subnets or IP
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addresses of the GitLab application servers that will connect to the
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database. Example: `%w(123.123.123.123/32 123.123.123.234/32)`
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```ruby
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# Disable all components except PostgreSQL
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roles ['postgres_role']
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repmgr['enable'] = false
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consul['enable'] = false
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prometheus['enable'] = false
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alertmanager['enable'] = false
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pgbouncer_exporter['enable'] = false
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redis_exporter['enable'] = false
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gitlab_exporter['enable'] = false
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postgresql['listen_address'] = '0.0.0.0'
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postgresql['port'] = 5432
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# Replace POSTGRESQL_PASSWORD_HASH with a generated md5 value
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postgresql['sql_user_password'] = 'POSTGRESQL_PASSWORD_HASH'
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# Replace XXX.XXX.XXX.XXX/YY with Network Address
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# ????
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postgresql['trust_auth_cidr_addresses'] = %w(APPLICATION_SERVER_IP_BLOCKS)
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# Disable automatic database migrations
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gitlab_rails['auto_migrate'] = false
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```
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2020-07-28 23:09:34 +05:30
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NOTE: **Note:**
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The role `postgres_role` was introduced with GitLab 10.3
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2020-06-23 00:09:42 +05:30
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1. [Reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.
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1. Note the PostgreSQL node's IP address or hostname, port, and
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plain text password. These will be necessary when configuring the GitLab
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application servers later.
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1. [Enable monitoring](replication_and_failover.md#enable-monitoring)
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Advanced configuration options are supported and can be added if
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needed.
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