kotovalexarian-likes-gitlab/gitlab-org--gitlab-foss

History

Ben Bodenmiller b000e7ed2b link to database requirements document in HA database docs		2017-03-24 00:11:12 +00:00
..
database.md	link to database requirements document in HA database docs	2017-03-24 00:11:12 +00:00
gitlab.md
load_balancer.md	spell out what VIP is	2017-03-06 17:35:08 +00:00
nfs.md	clarify NFS server vs client options	2017-03-22 23:13:01 +00:00
README.md	Swap HA setups	2016-11-15 14:07:38 +01:00
redis.md	Add `gitlab_rails['auto_migrate'] = false` to HA docs for Redis/PG [ci skip]	2016-12-15 10:41:09 -06:00
redis_source.md	Remove ToC since it's now supported in the docs portal itself	2016-11-17 13:03:29 +01:00

README.md

High Availability

GitLab supports several different types of clustering and high-availability. The solution you choose will be based on the level of scalability and availability you require. The easiest solutions are scalable, but not necessarily highly available.

Architecture

There are two kinds of setups:

active/active
active/passive

Active/Active

This architecture scales easily because all application servers handle user requests simultaneously. The database, Redis, and GitLab application are all deployed on separate servers. The configuration is only highly-available if the database, Redis and storage are also configured as such.

Follow the steps below to configure an active/active setup:

Active/Passive

For pure high-availability/failover with no scaling you can use an active/passive configuration. This utilizes DRBD (Distributed Replicated Block Device) to keep all data in sync. DRBD requires a low latency link to remain in sync. It is not advisable to attempt to run DRBD between data centers or in different cloud availability zones.

Components/Servers Required: 2 servers/virtual machines (one active/one passive)