Update HA resource descriptions

* Use `GiB memory` to describe memory needs.
* Add local storage recommendation for monitoring node.
* Better align CPU/Memory to match common cloud provider instnace types.
* Update requirements based on the new 10k user standard.

doc/administration/high_availability/README.md

@@ -172,14 +172,14 @@ environment that supports about 10,000 users. The specifications below are a
 representation of the work so far. The specifications may be adjusted in the
 future based on additional testing and iteration.
 
-- 3 PostgreSQL - 4 CPU, 8GB RAM per node
-- 1 PgBouncer - 2 CPU, 4GB RAM
-- 2 Redis - 2 CPU, 8GB RAM per node
-- 3 Consul/Sentinel - 2 CPU, 2GB RAM per node
-- 4 Sidekiq - 4 CPU, 8GB RAM per node
-- 5 GitLab application nodes - 20 CPU, 64GB RAM per node
-- 1 Gitaly - 20 CPU, 64GB RAM
-- 1 Monitoring node - 4 CPU, 8GB RAM
+- 3 PostgreSQL - 4 CPU, 16GiB memory per node
+- 1 PgBouncer - 2 CPU, 4GiB memory
+- 2 Redis - 2 CPU, 8GiB memory per node
+- 3 Consul/Sentinel - 2 CPU, 2GiB memory per node
+- 4 Sidekiq - 4 CPU, 16GiB memory per node
+- 5 GitLab application nodes - 16 CPU, 64GiB memory per node
+- 1 Gitaly - 16 CPU, 64GiB memory
+- 1 Monitoring node - 2 CPU, 8GiB memory, 100GiB local storage
 
 ### Fully Distributed
 

doc/install/requirements.md

@@ -63,13 +63,11 @@ NOTE: **Note:** Since file system performance may affect GitLab's overall perfor
 ### CPU
 
 - 1 core supports up to 100 users but the application can be a bit slower due to having all workers and background jobs running on the same core
-- **2 cores** is the **recommended** number of cores and supports up to 500 users
-- 4 cores supports up to 2,000 users
-- 8 cores supports up to 5,000 users
-- 16 cores supports up to 10,000 users
-- 32 cores supports up to 20,000 users
-- 64 cores supports up to 40,000 users
-- More users? Run it on [multiple application servers](https://about.gitlab.com/high-availability/)
+- **2 cores** is the **recommended** minimum number of cores and supports up to 100 users
+- 4 cores supports up to 500 users
+- 8 cores supports up to 1,000 users
+- 32 cores supports up to 5,000 users
+- More users? Run it high-availability on [multiple application servers](https://about.gitlab.com/high-availability/)
 
 ### Memory
 
@@ -80,13 +78,11 @@ less memory GitLab will give strange errors during the reconfigure run and 500
 errors during usage.
 
 - 4GB RAM + 4GB swap supports up to 100 users but it will be very slow
-- **8GB RAM** is the **recommended** memory size for all installations and supports up to 100 users
-- 16GB RAM supports up to 2,000 users
-- 32GB RAM supports up to 4,000 users
-- 64GB RAM supports up to 8,000 users
-- 128GB RAM supports up to 16,000 users
-- 256GB RAM supports up to 32,000 users
-- More users? Run it on [multiple application servers](https://about.gitlab.com/high-availability/)
+- **8GB RAM** is the **recommended** minimum memory size for all installations and supports up to 100 users
+- 16GB RAM supports up to 500 users
+- 32GB RAM supports up to 1,000 users
+- 128GB RAM supports up to 5,000 users
+- More users? Run it high-availability on [multiple application servers](https://about.gitlab.com/high-availability/)
 
 We recommend having at least [2GB of swap on your server](https://askubuntu.com/a/505344/310789), even if you currently have
 enough available RAM. Having swap will help reduce the chance of errors occurring