Update Monitoring node config in Ref Arch docs

doc/administration/monitoring/prometheus/index.md

@@ -122,44 +122,28 @@ The steps below are the minimum necessary to configure a Monitoring node running
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
+   roles ['monitoring_role']
+
    external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
+   # Grafana
    grafana['enable'] = true
    grafana['admin_password'] = 'toomanysecrets'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
    consul['monitoring_service_discovery'] =  true
-
-   # The addresses can be IPs or FQDNs
    consul['configuration'] = { 
-      retry_join: %w(10.0.0.1 10.0.0.2 10.0.0.3),
+      retry_join: %w(10.0.0.1 10.0.0.2 10.0.0.3), # The addresses can be IPs or FQDNs
    }
 
-   # Disable all other services
-   gitlab_rails['auto_migrate'] = false
-   alertmanager['enable'] = false
-   gitaly['enable'] = false
-   gitlab_exporter['enable'] = false
-   gitlab_workhorse['enable'] = false
+   # Nginx - For Grafana access
    nginx['enable'] = true
-   postgres_exporter['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   redis_exporter['enable'] = false
-   sidekiq['enable'] = false
-   puma['enable'] = false
-   node_exporter['enable'] = false
-   gitlab_exporter['enable'] = false
    ```
 
 1. Run `sudo gitlab-ctl reconfigure` to compile the configuration.

doc/administration/reference_architectures/10k_users.md

@@ -2234,29 +2234,17 @@ To configure the Monitoring node:
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
-   external_url 'http://gitlab.example.com'
+   roles ['monitoring_role']
 
-   # Avoid running unnecessary services on the Prometheus server
-   gitaly['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   puma['enable'] = false
-   sidekiq['enable'] = false
-   gitlab_workhorse['enable'] = false
-   alertmanager['enable'] = false
-   gitlab_exporter['enable'] = false
+   external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
-   grafana['enable'] = true
+   # Grafana
    grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
@@ -2265,8 +2253,8 @@ To configure the Monitoring node:
       retry_join: %w(10.6.0.11 10.6.0.12 10.6.0.13)
    }
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. [Reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.

doc/administration/reference_architectures/25k_users.md

@@ -2249,29 +2249,17 @@ To configure the Monitoring node:
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
-   external_url 'http://gitlab.example.com'
+   roles ['monitoring_role']
 
-   # Avoid running unnecessary services on the Prometheus server
-   gitaly['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   puma['enable'] = false
-   sidekiq['enable'] = false
-   gitlab_workhorse['enable'] = false
-   alertmanager['enable'] = false
-   gitlab_exporter['enable'] = false
+   external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
-   grafana['enable'] = true
+   # Grafana
    grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
@@ -2280,8 +2268,8 @@ To configure the Monitoring node:
       retry_join: %w(10.6.0.11 10.6.0.12 10.6.0.13)
    }
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. Save the file and [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).

doc/administration/reference_architectures/2k_users.md

@@ -790,32 +790,21 @@ running [Prometheus](../monitoring/prometheus/index.md) and
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
+   roles ['monitoring_role']
+
    external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
+   # Grafana
    grafana['enable'] = true
-   grafana['admin_password'] = 'toomanysecrets'
-
-   # Avoid running unnecessary services on the Prometheus server
-   gitaly['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   puma['enable'] = false
-   sidekiq['enable'] = false
-   gitlab_workhorse['enable'] = false
-   alertmanager['enable'] = false
-   gitlab_exporter['enable'] = false
+   grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. Prometheus also needs some scrape configurations to pull all the data from the various

doc/administration/reference_architectures/3k_users.md

@@ -1943,29 +1943,17 @@ running [Prometheus](../monitoring/prometheus/index.md) and
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
-   external_url 'http://gitlab.example.com'
+   roles ['monitoring_role']
 
-   # Avoid running unnecessary services on the Prometheus server
-   gitaly['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   puma['enable'] = false
-   sidekiq['enable'] = false
-   gitlab_workhorse['enable'] = false
-   alertmanager['enable'] = false
-   gitlab_exporter['enable'] = false
+   external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
-   grafana['enable'] = true
+   # Grafana
    grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
@@ -1974,8 +1962,8 @@ running [Prometheus](../monitoring/prometheus/index.md) and
       retry_join: %w(10.6.0.11 10.6.0.12 10.6.0.13)
    }
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. Save the file and [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).

doc/administration/reference_architectures/50k_users.md

@@ -2263,29 +2263,17 @@ To configure the Monitoring node:
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
-   external_url 'http://gitlab.example.com'
+   roles ['monitoring_role']
 
-   # Avoid running unnecessary services on the Prometheus server
-   gitaly['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   puma['enable'] = false
-   sidekiq['enable'] = false
-   gitlab_workhorse['enable'] = false
-   alertmanager['enable'] = false
-   gitlab_exporter['enable'] = false
+   external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
-   grafana['enable'] = true
+   # Grafana
    grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
@@ -2294,8 +2282,8 @@ To configure the Monitoring node:
       retry_join: %w(10.6.0.11 10.6.0.12 10.6.0.13)
    }
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. Save the file and [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).

doc/administration/reference_architectures/5k_users.md

@@ -1936,34 +1936,17 @@ running [Prometheus](../monitoring/prometheus/index.md) and
 1. Edit `/etc/gitlab/gitlab.rb` and add the contents:
 
    ```ruby
-   external_url 'http://gitlab.example.com'
+   roles ['monitoring_role']
 
-   # Avoid running unnecessary services on the Prometheus server
-   alertmanager['enable'] = false
-   gitaly['enable'] = false
-   gitlab_exporter['enable'] = false
-   gitlab_workhorse['enable'] = false
-   nginx['enable'] = true
-   postgres_exporter['enable'] = false
-   postgresql['enable'] = false
-   redis['enable'] = false
-   redis_exporter['enable'] = false
-   sidekiq['enable'] = false
-   puma['enable'] = false
-   node_exporter['enable'] = false
-   gitlab_exporter['enable'] = false
+   external_url 'http://gitlab.example.com'
 
-   # Enable Prometheus
-   prometheus['enable'] = true
+   # Prometheus
    prometheus['listen_address'] = '0.0.0.0:9090'
    prometheus['monitor_kubernetes'] = false
 
-   # Enable Login form
-   grafana['disable_login_form'] = false
-
-   # Enable Grafana
-   grafana['enable'] = true
+   # Grafana
    grafana['admin_password'] = '<grafana_password>'
+   grafana['disable_login_form'] = false
 
    # Enable service discovery for Prometheus
    consul['enable'] = true
@@ -1972,8 +1955,8 @@ running [Prometheus](../monitoring/prometheus/index.md) and
       retry_join: %w(10.6.0.11 10.6.0.12 10.6.0.13)
    }
 
-   # Prevent database migrations from running on upgrade automatically
-   gitlab_rails['auto_migrate'] = false
+   # Nginx - For Grafana access
+   nginx['enable'] = true
    ```
 
 1. Save the file and [reconfigure GitLab](../restart_gitlab.md#omnibus-gitlab-reconfigure).