VCS Server Management
The VCS Server handles |RCE| backend functionality. You need to configure a VCS Server to run with a |RCE| instance. If you do not, you will be missing the connection between |RCE| and its |repos|. This will cause error messages on the web interface. You can run your setup in the following configurations, currently the best performance is one of following:
- One VCS Server per |RCE| instance.
- One VCS Server handling multiple instances.
Important
If your server locale settings are not correctly configured, |RCE| and the VCS Server can run into issues. See this Ask Ubuntu post which explains the problem and gives a solution.
For more information, see the following sections:
- :ref:`install-vcs`
- :ref:`config-vcs`
- :ref:`vcs-server-options`
- :ref:`vcs-server-versions`
- :ref:`vcs-server-maintain`
- :ref:`vcs-server-config-file`
- :ref:`svn-http`
VCS Server Installation
To install a VCS Server, see :ref:`Installing a VCS server <control:install-vcsserver>`.
Hooking |RCE| to its VCS Server
To configure a |RCE| instance to use a VCS server, see :ref:`Configuring the VCS Server connection <control:manually-vcsserver-ini>`.
|RCE| VCS Server Options
The following list shows the available options on the |RCE| side of the connection to the VCS Server. The settings are configured per instance in the :file:`/home/{user}/.rccontrol/{instance-id}/rhodecode.ini` file.
################## ### VCS CONFIG ### ################## # set this line to match your VCS Server vcs.server = 127.0.0.1:10004 # Set to False to disable the VCS Server vcs.server.enable = True vcs.backends = hg, git, svn vcs.connection_timeout = 3600
VCS Server Versions
An updated version of the VCS Server is released with each |RCE| version. Use the VCS Server number that matches with the |RCE| version to pair the appropriate ones together. For |RCE| versions pre 3.3.0, VCS Server 1.X.Y works with |RCE| 3.X.Y, for example:
- VCS Server 1.0.0 works with |RCE| 3.0.0
- VCS Server 1.2.2 works with |RCE| 3.2.2
For |RCE| versions post 3.3.0, the VCS Server and |RCE| version numbers match, for example:
- VCS Server |release| works with |RCE| |release|
VCS Server Memory Optimization
To optimize the VCS server to manage the cache and memory usage efficiently, you need to configure the following options in the :file:`/home/{user}/.rccontrol/{vcsserver-id}/vcsserver.ini` file. Once configured, restart the VCS Server. By default we use an optimal settings, but in certain conditions tunning expiration_time and max_size can affect memory usage and performance
## cache region for storing repo_objects cache rc_cache.repo_object.backend = dogpile.cache.rc.memory_lru ## cache auto-expires after N seconds, setting this to 0 disabled cache rc_cache.repo_object.expiration_time = 300 ## max size of LRU, old values will be discarded if the size of cache reaches max_size ## Sets the maximum number of items stored in the cache, before the cache ## starts to be cleared. ## As a general rule of thumb, running this value at 120 resulted in a ## 5GB cache. Running it at 240 resulted in a 9GB cache. Your results ## will differ based on usage patterns and |repo| sizes. ## Tweaking this value to run at a fairly constant memory load on your ## server will help performance. rc_cache.repo_object.max_size = 120
To clear the cache completely, you can restart the VCS Server.
Important
While the VCS Server handles a restart gracefully on the web interface, it will drop connections during push/pull requests. So it is recommended you only perform this when there is very little traffic on the instance.
Use the following example to restart your VCS Server, for full details see the :ref:`RhodeCode Control CLI <control:rcc-cli>`.
$ rccontrol status
- NAME: vcsserver-1 - STATUS: RUNNING logs:/home/ubuntu/.rccontrol/vcsserver-1/vcsserver.log - VERSION: 4.7.2 VCSServer - URL: http://127.0.0.1:10008 - CONFIG: /home/ubuntu/.rccontrol/vcsserver-1/vcsserver.ini $ rccontrol restart vcsserver-1 Instance "vcsserver-1" successfully stopped. Instance "vcsserver-1" successfully started.
VCS Server Configuration
You can configure settings for multiple VCS Servers on your system using their individual configuration files. Use the following properties inside the configuration file to set up your system. The default location is :file:`home/{user}/.rccontrol/{vcsserver-id}/vcsserver.ini`. For a more detailed explanation of the logger levers, see :ref:`debug-mode`.
Note
After making changes, you need to restart your VCS Server to pick them up.
################################################################################ # RhodeCode VCSServer with HTTP Backend - configuration # # # ################################################################################ [server:main] ## COMMON ## host = 127.0.0.1 port = 10002 ########################## ## GUNICORN WSGI SERVER ## ########################## ## run with gunicorn --log-config vcsserver.ini --paste vcsserver.ini use = egg:gunicorn#main ## Sets the number of process workers. Recommended ## value is (2 * NUMBER_OF_CPUS + 1), eg 2CPU = 5 workers workers = 3 ## process name proc_name = rhodecode_vcsserver ## type of worker class, one of sync, gevent ## recommended for bigger setup is using of of other than sync one worker_class = sync ## The maximum number of simultaneous clients. Valid only for Gevent #worker_connections = 10 ## max number of requests that worker will handle before being gracefully ## restarted, could prevent memory leaks max_requests = 1000 max_requests_jitter = 30 ## amount of time a worker can spend with handling a request before it ## gets killed and restarted. Set to 6hrs timeout = 21600 [app:main] use = egg:rhodecode-vcsserver pyramid.default_locale_name = en pyramid.includes = ## default locale used by VCS systems locale = en_US.UTF-8 # cache regions, please don't change beaker.cache.regions = repo_object beaker.cache.repo_object.type = memorylru beaker.cache.repo_object.max_items = 100 # cache auto-expires after N seconds beaker.cache.repo_object.expire = 300 beaker.cache.repo_object.enabled = true ################################ ### LOGGING CONFIGURATION #### ################################ [loggers] keys = root, vcsserver, beaker [handlers] keys = console [formatters] keys = generic ############# ## LOGGERS ## ############# [logger_root] level = NOTSET handlers = console [logger_vcsserver] level = DEBUG handlers = qualname = vcsserver propagate = 1 [logger_beaker] level = DEBUG handlers = qualname = beaker propagate = 1 ############## ## HANDLERS ## ############## [handler_console] class = StreamHandler args = (sys.stderr,) level = DEBUG formatter = generic ################ ## FORMATTERS ## ################ [formatter_generic] format = %(asctime)s.%(msecs)03d %(levelname)-5.5s [%(name)s] %(message)s datefmt = %Y-%m-%d %H:%M:%S