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Bob Van Landuyt f1ae1e39ce Move the circuitbreaker check out in a separate process 
Moving the check out of the general requests, makes sure we don't have
any slowdown in the regular requests.

To keep the process performing this checks small, the check is still
performed inside a unicorn. But that is called from a process running
on the same server.

Because the checks are now done outside normal request, we can have a
simpler failure strategy:

The check is now performed in the background every
`circuitbreaker_check_interval`. Failures are logged in redis. The
failures are reset when the check succeeds. Per check we will try
`circuitbreaker_access_retries` times within
`circuitbreaker_storage_timeout` seconds.

When the number of failures exceeds
`circuitbreaker_failure_count_threshold`, we will block access to the
storage.

After `failure_reset_time` of no checks, we will clear the stored
failures. This could happen when the process that performs the checks
is not running.
2017-12-08 09:11:39 +01:00
..
environments implement basic request inspector for use in Capybara tests 2017-10-23 17:00:41 +03:00
initializers Update prometheus-client-mmap gem to highly optimized version 2017-12-07 17:47:23 +01:00
locales Merge branch '32059-fix-oauth-phishing' into 'security-10-1' 2017-11-10 16:26:53 +08:00
prometheus Change label to be more consistent, not a series. 2017-11-12 12:27:25 -05:00
routes Support uploads for groups 2017-12-07 12:27:52 +01:00
application.rb Add request throttles 2017-11-17 09:58:18 +01:00
aws.yml.example
boot.rb
database.yml.env
database.yml.mysql Set 'staging specific' in database.yml.mysql 2017-10-17 21:12:46 +03:00
database.yml.postgresql Update database.yml.postgresql 2017-10-17 21:15:01 +03:00
dependency_decisions.yml Update license_finder to 3.1.1 2017-11-16 14:14:29 +00:00
environment.rb
gitlab.yml.example Use tmp/test/artifacts for files 2017-12-03 12:04:48 +01:00
karma.config.js fix karma config file 2017-11-07 15:48:11 -06:00
license_finder.yml
mail_room.yml
no_todos_messages.yml
README.md
redis.cache.yml.example
redis.queues.yml.example
redis.shared_state.yml.example
resque.yml.example
routes.rb Move the circuitbreaker check out in a separate process 2017-12-08 09:11:39 +01:00
secrets.yml.example
sidekiq.yml.example
sidekiq_queues.yml BE for automatic pipeline when enabling Auto DevOps 2017-11-28 12:42:08 -06:00
svg.config.js Update svg external dependency 2017-11-24 15:42:39 +00:00
unicorn.rb.example
unicorn.rb.example.development
webpack.config.js fixed web worker performance 2017-11-28 09:23:42 +00:00

README.md

Configuration files Documentation

Note that most configuration files (config/*.*) committed into gitlab-ce will not be used for omnibus-gitlab. Configuration files committed into gitlab-ce are only used for development.

gitlab.yml

You can find most of GitLab configuration settings here.

mail_room.yml

This file is actually an YML wrapped inside an ERB file to enable templated values to be specified from gitlab.yml. mail_room loads this file first as an ERB file and then loads the resulting YML as its configuration.

resque.yml

This file is called resque.yml for historical reasons. We are NOT using Resque at the moment. It is used to specify Redis configuration values when a single database instance of Redis is desired.

Advanced Redis configuration files

In more advanced configurations of Redis key-value storage, it is desirable to separate the keys by lifecycle and intended use to ease provisioning and management of scalable Redis clusters.

These settings provide routing and other configuration data (such as sentinel, persistence policies, and other Redis customization) for connections to Redis single instances, Redis sentinel, and Redis clusters.

If desired, the routing URL provided by these settings can be used with:

  1. Unix Socket
    1. named socket for each Redis instance desired.
    2. database number for each Redis instance desired.
  2. TCP Socket
    1. host name or IP for each Redis instance desired
    2. TCP port number for each Redis instance desired
    3. database number for each Redis instance desired

Example URL attribute formats for GitLab Redis .yml configuration files

  • Unix Socket, default Redis database (0)
    • url: unix:/path/to/redis.sock
    • url: unix:/path/to/redis.sock?db=
  • Unix Socket, Redis database 44
    • url: unix:/path/to/redis.sock?db=44
    • url: unix:/path/to/redis.sock?extra=foo&db=44
  • TCP Socket for Redis on localhost, port 6379, database 33
    • url: redis://:mynewpassword@localhost:6379/33
  • TCP Socket for Redis on remote host myserver, port 6379, database 33
    • url: redis://:mynewpassword@myserver:6379/33

redis.cache.yml

If configured, redis.cache.yml overrides the resque.yml settings to configure the Redis database instance used for Rails.cache and other volatile non-persistent data which enhances the performance of GitLab. Settings here can be overridden by the environment variable GITLAB_REDIS_CACHE_CONFIG_FILE which provides an alternate location for configuration settings.

The order of precedence for the URL used to connect to the Redis instance used for cache is:

  1. URL from a configuration file pointed to by the GITLAB_REDIS_CACHE_CONFIG_FILE environment variable
  2. URL from redis.cache.yml
  3. URL from a configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. URL from resque.yml
  5. redis://localhost:6380

The order of precedence for all other configuration settings for cache are selected from only the first of the following files found (if a setting is not provided in an earlier file, the remainder of the files are not searched):

  1. the configuration file pointed to by the GITLAB_REDIS_CACHE_CONFIG_FILE environment variable
  2. the configuration file redis.cache.yml
  3. the configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. the configuration file resque.yml

redis.queues.yml

If configured, redis.queues.yml overrides the resque.yml settings to configure the Redis database instance used for clients of ::Gitlab::Redis::Queues. These queues are intended to be the foundation of reliable inter-process communication between modules, whether on the same host node, or within a cluster. The primary clients of the queues are SideKiq, Mailroom, CI Runner, Workhorse, and push services. Settings here can be overridden by the environment variable GITLAB_REDIS_QUEUES_CONFIG_FILE which provides an alternate location for configuration settings.

The order of precedence for the URL used to connect to the Redis instance used for queues is:

  1. URL from a configuration file pointed to by the GITLAB_REDIS_QUEUES_CONFIG_FILE environment variable
  2. URL from redis.queues.yml
  3. URL from a configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. URL from resque.yml
  5. redis://localhost:6381

The order of precedence for all other configuration settings for queues are selected from only the first of the following files found (if a setting is not provided in an earlier file, the remainder of the files are not searched):

  1. the configuration file pointed to by the GITLAB_REDIS_QUEUES_CONFIG_FILE environment variable
  2. the configuration file redis.queues.yml
  3. the configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. the configuration file resque.yml

redis.shared_state.yml

If configured, redis.shared_state.yml overrides the resque.yml settings to configure the Redis database instance used for clients of ::Gitlab::Redis::SharedState such as session state, and rate limiting. Settings here can be overridden by the environment variable GITLAB_REDIS_SHARED_STATE_CONFIG_FILE which provides an alternate location for configuration settings.

The order of precedence for the URL used to connect to the Redis instance used for shared_state is:

  1. URL from a configuration file pointed to by the GITLAB_REDIS_SHARED_STATE_CONFIG_FILE environment variable
  2. URL from redis.shared_state.yml
  3. URL from a configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. URL from resque.yml
  5. redis://localhost:6382

The order of precedence for all other configuration settings for shared_state are selected from only the first of the following files found (if a setting is not provided in an earlier file, the remainder of the files are not searched):

  1. the configuration file pointed to by the GITLAB_REDIS_SHARED_STATE_CONFIG_FILE environment variable
  2. the configuration file redis.shared_state.yml
  3. the configuration file pointed to by the GITLAB_REDIS_CONFIG_FILE environment variable
  4. the configuration file resque.yml