Drop 'experimental' references to Puma

doc/administration/monitoring/prometheus/gitlab_metrics.md

@@ -182,7 +182,7 @@ Unicorn specific metrics, when Unicorn is used.
 | `unicorn_queued_connections` | Gauge | 11.0  | The number of queued Unicorn connections           |
 | `unicorn_workers`            | Gauge | 12.0  | The number of Unicorn workers                      |
 
-## Puma Metrics **(EXPERIMENTAL)**
+## Puma Metrics
 
 When Puma is used instead of Unicorn, the following metrics are available:
 

doc/administration/operations/puma.md

@@ -2,8 +2,8 @@
 
 ## Puma
 
-GitLab plans to use [Puma](https://github.com/puma/puma) to replace
-[Unicorn](https://bogomips.org/unicorn/).
+As of GitLab 12.9, [Puma](https://github.com/puma/puma) has replaced [Unicorn](https://bogomips.org/unicorn/).
+as the default web server.
 
 ## Why switch to Puma?
 

doc/administration/packages/dependency_proxy.md

@@ -11,9 +11,8 @@ dependency proxies, see the [user guide](../../user/group/dependency_proxy/index
 
 NOTE: **Note:**
 Dependency proxy requires the Puma web server to be enabled.
-Puma support is EXPERIMENTAL at this time.
 
-To enable the Dependency proxy feature:
+To enable the dependency proxy feature:
 
 **Omnibus GitLab installations**
 
@@ -37,7 +36,9 @@ To enable the Dependency proxy feature:
    ```
 
 1. [Restart GitLab](../restart_gitlab.md#installations-from-source "How to restart GitLab") for the changes to take effect.
-1. Enable the [Puma web server](../../install/installation.md#using-puma).
+
+Since Puma is already the default web server for installations from source as of GitLab 12.9,
+no further changes are needed.
 
 ## Changing the storage path
 

doc/install/installation.md

@@ -457,16 +457,13 @@ sudo chmod -R u+rwX shared/artifacts/
 # Change the permissions of the directory where GitLab Pages are stored
 sudo chmod -R ug+rwX shared/pages/
 
-# Copy the example Unicorn config
-sudo -u git -H cp config/unicorn.rb.example config/unicorn.rb
+# Copy the example Puma config
+sudo -u git -H cp config/puma.rb.example config/puma.rb
 
-# Find number of cores
-nproc
-
-# Enable cluster mode if you expect to have a high load instance
-# Set the number of workers to at least the number of cores
-# Ex. change the amount of workers to 3 for 2GB RAM server
-sudo -u git -H editor config/unicorn.rb
+# Refer to https://github.com/puma/puma#configuration for more information.
+# You should scale Puma workers and threads based on the number of CPU
+# cores you have available. You can get that number via the `nproc` command.
+sudo -u git -H editor config/puma.rb
 
 # Copy the example Rack attack config
 sudo -u git -H cp config/initializers/rack_attack.rb.example config/initializers/rack_attack.rb
@@ -495,8 +492,8 @@ sudo -u git -H editor config/resque.yml
 ```
 
 CAUTION: **Caution:**
-Make sure to edit both `gitlab.yml` and `unicorn.rb` to match your setup.
-If you want to use Puma web server, see [Using Puma](#using-puma) for the additional steps.
+Make sure to edit both `gitlab.yml` and `puma.rb` to match your setup.
+If you want to use the Unicorn web server, see [Using Unicorn](#using-unicorn) for the additional steps.
 
 NOTE: **Note:**
 If you want to use HTTPS, see [Using HTTPS](#using-https) for the additional steps.
@@ -947,23 +944,22 @@ You also need to change the corresponding options (e.g. `ssh_user`, `ssh_host`,
 
 Apart from the always supported Markdown style, there are other rich text files that GitLab can display. But you might have to install a dependency to do so. See the [`github-markup` gem README](https://github.com/gitlabhq/markup#markups) for more information.
 
-### Using Puma
-
-Puma is a multi-threaded HTTP 1.1 server for Ruby applications.
+### Using Unicorn
 
-To use GitLab with Puma:
+As of GitLab 12.9, [Puma](https://github.com/puma/puma) has replaced Unicorn as the default web server for installations from source.
+If you want to switch back to Unicorn, follow these steps:
 
-1. Finish GitLab setup so you have it up and running.
-1. Copy the supplied example Puma config file into place:
+1. Finish the GitLab setup so you have it up and running.
+1. Copy the supplied example Unicorn config file into place:
 
    ```shell
    cd /home/git/gitlab
 
    # Copy config file for the web server
-   sudo -u git -H cp config/puma.rb.example config/puma.rb
+   sudo -u git -H cp config/unicorn.rb.example config/unicorn.rb
    ```
 
-1. Edit the system `init.d` script to use `EXPERIMENTAL_PUMA=1` flag. If you have `/etc/default/gitlab`, then you should edit it instead.
+1. Edit the system `init.d` script to set the `USE_UNICORN=1` flag. If you have `/etc/default/gitlab`, then you should edit it instead.
 1. Restart GitLab.
 
 ## Troubleshooting

lib/support/init.d/gitlab

@@ -26,7 +26,7 @@
 
 ### Environment variables
 RAILS_ENV="production"
-EXPERIMENTAL_PUMA=""
+USE_UNICORN=""
 
 # Script variable names should be lower-case not to conflict with
 # internal /bin/sh variables such as PATH, EDITOR or SHELL.
@@ -68,10 +68,10 @@ if ! cd "$app_root" ; then
 fi
 
 # Select the web server to use
-if [ -z "$EXPERIMENTAL_PUMA" ]; then
-  use_web_server="unicorn"
-else
+if [ -z "$USE_UNICORN" ]; then
   use_web_server="puma"
+else
+  use_web_server="unicorn"
 fi
 
 

lib/support/init.d/gitlab.default.example

@@ -5,8 +5,8 @@
 # Normal values are "production", "test" and "development".
 RAILS_ENV="production"
 
-# Uncomment the line below to enable Puma web server instead of Unicorn.
-# EXPERIMENTAL_PUMA=1
+# Uncomment the line below to enable the Unicorn web server instead of Puma.
+# USE_UNICORN=1
 
 # app_user defines the user that GitLab is run as.
 # The default is "git".