silverstripe-framework/docs/en/00_Getting_Started/00_Server_Requirements.md

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# Requirements
SilverStripe CMS needs to be installed on a web server. Content authors and website administrators use their web browser
to access a web-based GUI to do their day-to-day work. Website designers and developers require access to the files on
the server to update templates, website logic, and perform upgrades or maintenance.
Our web-based [PHP installer](installation/) can check if you meet the requirements listed below.
## Web server software requirements
* PHP 5.6 and PHP 7.x
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* Once PHP versions become [unsupported by the PHP Project](http://php.net/supported-versions.php),
we drop support for those versions in the [next minor release](/contributing/release-process). This means that PHP 5.6 support may be dropped in a 4.x minor release after December 2018.
* We recommend using a PHP accelerator or opcode cache, such as [xcache](http://xcache.lighttpd.net/) or [WinCache](http://www.iis.net/download/wincacheforphp).
* Note: Some PHP 5.5+ packages already have [Zend OpCache](http://php.net/manual/en/book.opcache.php) installed by default. If this is the case on your system, do not try and run additional opcaches alongside Zend OpCache without first disabling it, as it will likely have unexpected consequences.
* Allocate at least 48MB of memory to each PHP process. (SilverStripe can be resource hungry for some intensive operations.)
* PHP requires a suitable CSPRNG (random number generator) source for generating random tokens, password salts etc. This can be any of the following, and most operating systems will have at least one source available:
* PHP 7 `random_bytes()`:
* `CryptGenRandom` (Windows only)
* `arc4random_buf` (OpenBSD & NetBSD only)
* `getrandom(2)` (Linux only)
* `/dev/urandom`
* PHP 5 [`random_compat`](https://github.com/paragonie/random_compat) polyfill:
* libsodium
* `/dev/urandom`
* [`mcrypt_create_iv()`](http://php.net/manual/en/function.mcrypt-create-iv.php)
* CAPICOM Utilities (`CAPICOM.Utilities.1`, Windows only)
API Refactor bootstrap, request handling See https://github.com/silverstripe/silverstripe-framework/pull/7037 and https://github.com/silverstripe/silverstripe-framework/issues/6681 Squashed commit of the following: commit 8f65e5653211240650eaa4fa65bb83b45aae6d58 Author: Ingo Schommer <me@chillu.com> Date: Thu Jun 22 22:25:50 2017 +1200 Fixed upgrade guide spelling commit 76f95944fa89b0b540704b8d744329f690f9698c Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 16:38:34 2017 +1200 BUG Fix non-test class manifest including sapphiretest / functionaltest commit 9379834cb4b2e5177a2600049feec05bf111c16b Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 15:50:47 2017 +1200 BUG Fix nesting bug in Kernel commit 188ce35d82599360c40f0f2de29579c56fb90761 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 15:14:51 2017 +1200 BUG fix db bootstrapping issues commit 7ed4660e7a63915e8e974deeaba9807bc4d38b0d Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 14:49:07 2017 +1200 BUG Fix issue in DetailedErrorFormatter commit 738f50c497166f81ccbe3f40fbcff895ce71f82f Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 11:49:19 2017 +1200 Upgrading notes on mysite/_config.php commit 6279d28e5e455916f902a2f963c014d8899f7fc7 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 11:43:28 2017 +1200 Update developer documentation commit 5c90d53a84ef0139c729396949a7857fae60436f Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 10:48:44 2017 +1200 Update installer to not use global databaseConfig commit f9b2ba4755371f08bd95f6908ac612fcbb7ca205 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 21:04:39 2017 +1200 Fix behat issues commit 5b59a912b60282b4dad4ef10ed3b97c5d0a761ac Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 17:07:11 2017 +1200 Move HTTPApplication to SilverStripe\Control namespace commit e2c4a18f637bdd3d276619554de60ee8b4d95ced Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 16:29:03 2017 +1200 More documentation Fix up remaining tests Refactor temp DB into TempDatabase class so it’s available outside of unit tests. commit 5d235e64f341d6251bfe9f4833f15cc8593c5034 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 12:13:15 2017 +1200 API HTTPRequestBuilder::createFromEnvironment() now cleans up live globals BUG Fix issue with SSViewer Fix Security / View tests commit d88d4ed4e48291cb65407f222f190064b1f1deeb Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 16:39:43 2017 +1200 API Refactor AppKernel into CoreKernel commit f7946aec3391139ae1b4029c353c327a36552b36 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 16:00:40 2017 +1200 Docs and minor cleanup commit 12bd31f9366327650b5c0c0f96cd0327d44faf0a Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 15:34:34 2017 +1200 API Remove OutputMiddleware API Move environment / global / ini management into Environment class API Move getTempFolder into TempFolder class API Implement HTTPRequestBuilder / CLIRequestBuilder BUG Restore SS_ALLOWED_HOSTS check in original location API CoreKernel now requires $basePath to be passed in API Refactor installer.php to use application to bootstrap API move memstring conversion globals to Convert BUG Fix error in CoreKernel nesting not un-nesting itself properly. commit bba979114624247cf463cf2a8c9e4be9a7c3a772 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 18:07:53 2017 +1200 API Create HTTPMiddleware and standardise middleware for request handling commit 2a10c2397bdc53001013f607b5d38087ce6c0730 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 17:42:42 2017 +1200 Fixed ORM tests commit d75a8d1d93398af4bd0432df9e4bc6295c15a3fe Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 17:15:07 2017 +1200 FIx i18n tests commit 06364af3c379c931889c4cc34dd920fee3db204a Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 16:59:34 2017 +1200 Fix controller namespace Move states to sub namespace commit 2a278e2953d2dbb19f78d91c919048e1fc935436 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 12:49:45 2017 +1200 Fix forms namespace commit b65c21241bee019730027071d815dbf7571197a4 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 15 18:56:48 2017 +1200 Update API usages commit d1d4375c95a264a6b63cbaefc2c1d12f808bfd82 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 15 18:41:44 2017 +1200 API Refactor $flush into HTPPApplication API Enforce health check in Controller::pushCurrent() API Better global backup / restore Updated Director::test() to use new API commit b220534f06732db4fa940d8724c2a85c0ba2495a Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 22:05:57 2017 +1200 Move app nesting to a test state helper commit 603704165c08d0c1c81fd5e6bb9506326eeee17b Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 21:46:04 2017 +1200 Restore kernel stack to fix multi-level nesting commit 2f6336a15bf79dc8c2edd44cec1931da2dd51c28 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 17:23:21 2017 +1200 API Implement kernel nesting commit fc7188da7d6ad6785354bab61f08700454c81d91 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:43:13 2017 +1200 Fix core tests commit a0ae7235148fffd71f2f02d1fe7fe45bf3aa39eb Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:23:52 2017 +1200 Fix manifest tests commit ca033952513633e182040d3d13e1caa9000ca184 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:00:00 2017 +1200 API Move extension management into test state commit c66d4339777663a8a04661fea32a0cf35b95d20f Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 14:10:59 2017 +1200 API Refactor SapphireTest state management into SapphireTestState API Remove Injector::unregisterAllObjects() API Remove FakeController commit f26ae75c6ecaafa0dec1093264e0187191e6764d Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 12 18:04:34 2017 +1200 Implement basic CLI application object commit 001d5596621404892de0a5413392379eff990641 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 12 17:39:38 2017 +1200 Remove references to SapphireTest::is_running_test() Upgrade various code commit de079c041dacd96bc4f4b66421fa2b2cc4c320f8 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 7 18:07:33 2017 +1200 API Implement APP object API Refactor of Session
2017-06-22 12:50:45 +02:00
* Required modules: ctype, dom, fileinfo, hash, intl, mbstring, session, simplexml, tokenizer, xml.
* At least one from each group of extensions:
* Image library extension (gd2, imagick)
* DB connector library (pdo, mysqli, pgsql)
* Recommended configuration
API Refactor bootstrap, request handling See https://github.com/silverstripe/silverstripe-framework/pull/7037 and https://github.com/silverstripe/silverstripe-framework/issues/6681 Squashed commit of the following: commit 8f65e5653211240650eaa4fa65bb83b45aae6d58 Author: Ingo Schommer <me@chillu.com> Date: Thu Jun 22 22:25:50 2017 +1200 Fixed upgrade guide spelling commit 76f95944fa89b0b540704b8d744329f690f9698c Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 16:38:34 2017 +1200 BUG Fix non-test class manifest including sapphiretest / functionaltest commit 9379834cb4b2e5177a2600049feec05bf111c16b Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 15:50:47 2017 +1200 BUG Fix nesting bug in Kernel commit 188ce35d82599360c40f0f2de29579c56fb90761 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 15:14:51 2017 +1200 BUG fix db bootstrapping issues commit 7ed4660e7a63915e8e974deeaba9807bc4d38b0d Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 14:49:07 2017 +1200 BUG Fix issue in DetailedErrorFormatter commit 738f50c497166f81ccbe3f40fbcff895ce71f82f Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 11:49:19 2017 +1200 Upgrading notes on mysite/_config.php commit 6279d28e5e455916f902a2f963c014d8899f7fc7 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 11:43:28 2017 +1200 Update developer documentation commit 5c90d53a84ef0139c729396949a7857fae60436f Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 22 10:48:44 2017 +1200 Update installer to not use global databaseConfig commit f9b2ba4755371f08bd95f6908ac612fcbb7ca205 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 21:04:39 2017 +1200 Fix behat issues commit 5b59a912b60282b4dad4ef10ed3b97c5d0a761ac Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 17:07:11 2017 +1200 Move HTTPApplication to SilverStripe\Control namespace commit e2c4a18f637bdd3d276619554de60ee8b4d95ced Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 16:29:03 2017 +1200 More documentation Fix up remaining tests Refactor temp DB into TempDatabase class so it’s available outside of unit tests. commit 5d235e64f341d6251bfe9f4833f15cc8593c5034 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 21 12:13:15 2017 +1200 API HTTPRequestBuilder::createFromEnvironment() now cleans up live globals BUG Fix issue with SSViewer Fix Security / View tests commit d88d4ed4e48291cb65407f222f190064b1f1deeb Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 16:39:43 2017 +1200 API Refactor AppKernel into CoreKernel commit f7946aec3391139ae1b4029c353c327a36552b36 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 16:00:40 2017 +1200 Docs and minor cleanup commit 12bd31f9366327650b5c0c0f96cd0327d44faf0a Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 20 15:34:34 2017 +1200 API Remove OutputMiddleware API Move environment / global / ini management into Environment class API Move getTempFolder into TempFolder class API Implement HTTPRequestBuilder / CLIRequestBuilder BUG Restore SS_ALLOWED_HOSTS check in original location API CoreKernel now requires $basePath to be passed in API Refactor installer.php to use application to bootstrap API move memstring conversion globals to Convert BUG Fix error in CoreKernel nesting not un-nesting itself properly. commit bba979114624247cf463cf2a8c9e4be9a7c3a772 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 18:07:53 2017 +1200 API Create HTTPMiddleware and standardise middleware for request handling commit 2a10c2397bdc53001013f607b5d38087ce6c0730 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 17:42:42 2017 +1200 Fixed ORM tests commit d75a8d1d93398af4bd0432df9e4bc6295c15a3fe Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 17:15:07 2017 +1200 FIx i18n tests commit 06364af3c379c931889c4cc34dd920fee3db204a Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 16:59:34 2017 +1200 Fix controller namespace Move states to sub namespace commit 2a278e2953d2dbb19f78d91c919048e1fc935436 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 19 12:49:45 2017 +1200 Fix forms namespace commit b65c21241bee019730027071d815dbf7571197a4 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 15 18:56:48 2017 +1200 Update API usages commit d1d4375c95a264a6b63cbaefc2c1d12f808bfd82 Author: Damian Mooyman <damian@silverstripe.com> Date: Thu Jun 15 18:41:44 2017 +1200 API Refactor $flush into HTPPApplication API Enforce health check in Controller::pushCurrent() API Better global backup / restore Updated Director::test() to use new API commit b220534f06732db4fa940d8724c2a85c0ba2495a Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 22:05:57 2017 +1200 Move app nesting to a test state helper commit 603704165c08d0c1c81fd5e6bb9506326eeee17b Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 21:46:04 2017 +1200 Restore kernel stack to fix multi-level nesting commit 2f6336a15bf79dc8c2edd44cec1931da2dd51c28 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 17:23:21 2017 +1200 API Implement kernel nesting commit fc7188da7d6ad6785354bab61f08700454c81d91 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:43:13 2017 +1200 Fix core tests commit a0ae7235148fffd71f2f02d1fe7fe45bf3aa39eb Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:23:52 2017 +1200 Fix manifest tests commit ca033952513633e182040d3d13e1caa9000ca184 Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 15:00:00 2017 +1200 API Move extension management into test state commit c66d4339777663a8a04661fea32a0cf35b95d20f Author: Damian Mooyman <damian@silverstripe.com> Date: Tue Jun 13 14:10:59 2017 +1200 API Refactor SapphireTest state management into SapphireTestState API Remove Injector::unregisterAllObjects() API Remove FakeController commit f26ae75c6ecaafa0dec1093264e0187191e6764d Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 12 18:04:34 2017 +1200 Implement basic CLI application object commit 001d5596621404892de0a5413392379eff990641 Author: Damian Mooyman <damian@silverstripe.com> Date: Mon Jun 12 17:39:38 2017 +1200 Remove references to SapphireTest::is_running_test() Upgrade various code commit de079c041dacd96bc4f4b66421fa2b2cc4c320f8 Author: Damian Mooyman <damian@silverstripe.com> Date: Wed Jun 7 18:07:33 2017 +1200 API Implement APP object API Refactor of Session
2017-06-22 12:50:45 +02:00
* Dev (local development for running test framework): memory_limit 512MB
* Production: memory_limit = 64M
* See [phpinfo()](http://php.net/manual/en/function.phpinfo.php) for more information about your environment
* One of the following databases:
* MySQL 5.0+
* PostgreSQL 8.3+ (requires ["postgresql" module](http://silverstripe.org/postgresql-module))
* [SQL Server 2008+](http://silverstripe.org/microsoft-sql-server-database/), [Oracle](https://github.com/smindel/silverstripe-oracle) and [SQLite](http://silverstripe.org/sqlite-database/) are not commercially supported, but are under development by our open source community.
* One of the following web server products:
* Apache 2.0+ with mod_rewrite and "AllowOverride All" set
* IIS 7+
* Support for Lighttpd, IIS 6, and other web servers may work if you are familiar with configuring those products.
* We recommend enabling content compression (for example with mod_deflate) to speed up the delivery of HTML, CSS, and JavaScript.
* One of the following operating systems:
* Linux/Unix/BSD
* Microsoft Windows XP SP3, Vista, Windows 7, Server 2008, Server 2008 R2
* Mac OS X 10.4+
## Web server hardware requirements
Hardware requirements vary widely depending on the traffic to your website, the complexity of its logic (i.e., PHP), and
its size (i.e., database.) By default, all pages are dynamic, and thus access both the database and execute PHP code to
generate. SilverStripe can cache full pages and segments of templates to dramatically increase performance.
A typical website page on a conservative single CPU machine (e.g., Intel 2Ghz) takes roughly 300ms to generate. This
comfortably allows over a million page views per month. Caching and other optimisations can improve this by a factor of
ten or even one hundred times. SilverStripe CMS can be used in multiple-server architectures to improve scalability and
redundancy.
For more information on how to scale SilverStripe see the [Performance](/developer_guides/performance/) Guide.
## Client side (CMS) requirements
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SilverStripe CMS is designed to work well with Google Chrome, Mozilla Firefox and Internet Explorer 11+. We aim to
provide satisfactory experiences in Apple Safari. SilverStripe CMS works well across Windows, Linux, and Mac operating
systems.
## End user requirements
SilverStripe CMS is designed to make excellent, standards-compliant websites that are compatible with a wide range of
industry standard browsers and operating systems. A competent developer is able to produce websites that meet W3C
guidelines for HTML, CSS, JavaScript, and accessibility, in addition to meeting specific guide lines, such as
e-government requirements.