Rename HA page to availability

Rename and move availability page as first iteration to new
availability content

doc/administration/file_hooks.md

@@ -113,4 +113,4 @@ Validating file hooks from /plugins directory
 
 [system hooks]: ../system_hooks/system_hooks.md
 [webhooks]: ../user/project/integrations/webhooks.md
-[highly available]: ./high_availability/README.md
+[highly available]: ./availability/index.md

doc/administration/geo/replication/external_database.md

@@ -129,7 +129,7 @@ To configure the connection to the external read-replica database and enable Log
 database to keep track of replication status and automatically recover from
 potential replication issues. Omnibus automatically configures a tracking database
 when `roles ['geo_secondary_role']` is set. For high availability,
-refer to [Geo High Availability](../../high_availability/README.md).
+refer to [Geo High Availability](../../availability/index.md).
 If you want to run this database external to Omnibus, please follow the instructions below.
 
 The tracking database requires an [FDW](https://www.postgresql.org/docs/9.6/postgres-fdw.html)

doc/administration/geo/replication/high_availability.md

@@ -47,12 +47,12 @@ It is possible to use cloud hosted services for PostgreSQL and Redis, but this i
 ## Prerequisites: Two working GitLab HA clusters
 
 One cluster will serve as the **primary** node. Use the
-[GitLab HA documentation](../../high_availability/README.md) to set this up. If
+[GitLab HA documentation](../../availability/index.md) to set this up. If
 you already have a working GitLab instance that is in-use, it can be used as a
 **primary**.
 
 The second cluster will serve as the **secondary** node. Again, use the
-[GitLab HA documentation](../../high_availability/README.md) to set this up.
+[GitLab HA documentation](../../availability/index.md) to set this up.
 It's a good idea to log in and test it, however, note that its data will be
 wiped out as part of the process of replicating from the **primary**.
 
@@ -371,7 +371,7 @@ more information.
 
 The minimal reference architecture diagram above shows all application services
 running together on the same machines. However, for high availability we
-[strongly recommend running all services separately](../../high_availability/README.md).
+[strongly recommend running all services separately](../../availability/index.md).
 
 For example, a Sidekiq server could be configured similarly to the frontend
 application servers above, with some changes to run only the `sidekiq` service:

doc/administration/geo/replication/index.md

@@ -2,7 +2,7 @@
 
 > - Introduced in GitLab Enterprise Edition 8.9.
 > - Using Geo in combination with
->   [High Availability](../../high_availability/README.md)
+>   [High Availability](../../availability/index.md)
 >   is considered **Generally Available** (GA) in
 >   [GitLab Premium](https://about.gitlab.com/pricing/) 10.4.
 

doc/administration/high_availability/database.md

@@ -24,7 +24,7 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 
 ## PostgreSQL in a Scaled and Highly Available Environment
 
-This section is relevant for [Scalable and Highly Available Setups](README.md).
+This section is relevant for [Scalable and Highly Available Setups](../scaling/index.md).
 
 ### Provide your own PostgreSQL instance **(CORE ONLY)**
 

doc/administration/high_availability/gitaly.md

@@ -11,7 +11,7 @@ should consider using Gitaly on a separate node.
 See the [Gitaly HA Epic](https://gitlab.com/groups/gitlab-org/-/epics/289) to
 track plans and progress toward high availability support.
 
-This document is relevant for [Scalable and Highly Available Setups](README.md).
+This document is relevant for [Scalable and Highly Available Setups](../scaling/index.md).
 
 ## Running Gitaly on its own server
 
@@ -19,7 +19,7 @@ See [Running Gitaly on its own server](../gitaly/index.md#running-gitaly-on-its-
 in Gitaly documentation.
 
 Continue configuration of other components by going back to the
-[Scaling and High Availability](README.md#gitlab-components-and-configuration-instructions) page.
+[High Availability](../availability/index.md#gitlab-components-and-configuration-instructions) page.
 
 ## Enable Monitoring
 

doc/administration/high_availability/monitoring_node.md

@@ -11,7 +11,7 @@ You can configure a Prometheus node to monitor GitLab.
 ## Standalone Monitoring node using GitLab Omnibus
 
 The GitLab Omnibus package can be used to configure a standalone Monitoring node running [Prometheus](../monitoring/prometheus/index.md) and [Grafana](../monitoring/performance/grafana_configuration.md).
-The monitoring node is not highly available. See [Scaling and High Availability](README.md)
+The monitoring node is not highly available. See [Scaling and High Availability](../scaling/index.md)
 for an overview of GitLab scaling and high availability options.
 
 The steps below are the minimum necessary to configure a Monitoring node running Prometheus and Grafana with

doc/administration/high_availability/redis.md

@@ -22,7 +22,7 @@ These will be necessary when configuring the GitLab application servers later.
 
 ## Redis in a Scaled and Highly Available Environment
 
-This section is relevant for [Scalable and Highly Available Setups](README.md).
+This section is relevant for [Scalable and Highly Available Setups](../scaling/index.md).
 
 ### Provide your own Redis instance **(CORE ONLY)**
 
@@ -38,7 +38,7 @@ In this configuration Redis is not highly available, and represents a single
 point of failure. However, in a scaled environment the objective is to allow
 the environment to handle more users or to increase throughput. Redis itself
 is generally stable and can handle many requests so it is an acceptable
-trade off to have only a single instance. See [Scaling and High Availability](README.md)
+trade off to have only a single instance. See [High Availability](../availability/index.md)
 for an overview of GitLab scaling and high availability options.
 
 The steps below are the minimum necessary to configure a Redis server with
@@ -84,7 +84,7 @@ Advanced configuration options are supported and can be added if
 needed.
 
 Continue configuration of other components by going back to the
-[Scaling and High Availability](README.md#gitlab-components-and-configuration-instructions) page.
+[High Availability](../availability/index.md#gitlab-components-and-configuration-instructions) page.
 
 ### High Availability with GitLab Omnibus **(PREMIUM ONLY)**
 

doc/administration/index.md

@@ -34,7 +34,7 @@ Learn how to install, configure, update, and maintain your GitLab instance.
 - [Install](../install/README.md): Requirements, directory structures, and installation methods.
   - [Database load balancing](database_load_balancing.md): Distribute database queries among multiple database servers. **(STARTER ONLY)**
   - [Omnibus support for log forwarding](https://docs.gitlab.com/omnibus/settings/logs.html#udp-log-shipping-gitlab-enterprise-edition-only) **(STARTER ONLY)**
-- [High Availability](high_availability/README.md): Configure multiple servers for scaling or high availability.
+- [High Availability](availability/index.md): Configure multiple servers for scaling or high availability.
   - [Installing GitLab HA on Amazon Web Services (AWS)](../install/aws/index.md): Set up GitLab High Availability on Amazon AWS.
 - [Geo](geo/replication/index.md): Replicate your GitLab instance to other geographic locations as a read-only fully operational version. **(PREMIUM ONLY)**
 - [Disaster Recovery](geo/disaster_recovery/index.md): Quickly fail-over to a different site with minimal effort in a disaster situation. **(PREMIUM ONLY)**

doc/administration/object_storage.md

@@ -77,9 +77,8 @@ with the Fog library that GitLab uses. Symptoms include:
 
 ### GitLab Pages requires NFS
 
-If you're working to add more GitLab servers for [scaling](scaling/index.md) or
-[fault tolerance](high_availability/README.md) and one of your requirements
-is [GitLab Pages](../user/project/pages/index.md) this currently requires
+If you're working to add more GitLab servers for [scaling or fault tolerance](scaling/index.md)
+and one of your requirements is [GitLab Pages](../user/project/pages/index.md) this currently requires
 NFS. There is [work in progress](https://gitlab.com/gitlab-org/gitlab-pages/issues/196)
 to remove this dependency. In the future, GitLab Pages may use
 [object storage](https://gitlab.com/gitlab-org/gitlab/-/issues/208135).

doc/administration/scaling/index.md

@@ -8,7 +8,7 @@ GitLab supports a number of scaling options to ensure that your self-managed
 instance is able to scale out to meet your organization's needs when scaling up
 a single-box GitLab installation is no longer practical or feasible.
 
-Please consult our [high availability documentation](../high_availability/README.md)
+Please consult our [high availability documentation](../availability/index.md)
 if your organization requires fault tolerance and redundancy features, such as
 automatic database system failover.
 

doc/install/README.md

@@ -22,7 +22,7 @@ There are many ways you can install GitLab depending on your platform:
 
 TIP: **If in doubt, choose Omnibus:**
 The Omnibus GitLab packages are mature, scalable, support
-[high availability](../administration/high_availability/README.md) and are used
+[high availability](../administration/availability/index.md) and are used
 today on GitLab.com. The Helm charts are recommended for those who are familiar
 with Kubernetes.
 
@@ -36,7 +36,7 @@ The Omnibus GitLab package uses our official deb/rpm repositories. This is
 recommended for most users.
 
 If you need additional flexibility and resilience, we recommend deploying
-GitLab as described in our [High Availability documentation](../administration/high_availability/README.md).
+GitLab as described in our [High Availability documentation](../administration/availability/index.md).
 
 [**> Install GitLab using the Omnibus GitLab package.**](https://about.gitlab.com/install/)
 

doc/install/aws/index.md

@@ -719,7 +719,7 @@ Have a read through these other resources and feel free to
 [open an issue](https://gitlab.com/gitlab-org/gitlab/issues/new)
 to request additional material:
 
-- [GitLab High Availability](../../administration/high_availability/README.md):
+- [Scaling GitLab](../../administration/scaling/index.md):
   GitLab supports several different types of clustering and high-availability.
 - [Geo replication](../../administration/geo/replication/index.md):
   Geo is the solution for widely distributed development teams.