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1 {{box cssClass="floatinginfobox" title="**Contents**"}}
2 {{toc/}}
3 {{/box}}
4
5 XWiki is a Java-based wiki and runs on a Servlet Container such as Tomcat, Jetty, JBoss, WebLogic, WebSphere, etc. It also uses a relational database to store its content. It can run on almost any database (HSQL, MySQL, etc) but XWiki and the database need to be setup correctly.
6
7 If you're upgrading an existing XWiki install check the [[Upgrade instructions page>>Documentation.AdminGuide.Upgrade]].
8
9 Pick one of the [[installation methods>>#HInstallationMethods]] to begin installing XWiki.
10
11 Once you've finished the installation check the other topics in the [[Admin Guide>>Documentation.AdminGuide.WebHome]] for configuring and [[securing>>Documentation.AdminGuide.Security]] your wiki.
12
13 {{id name="Prerequisites"/}}
14
15 = Hardware and Software requirements =
16
17 * Java 1.8.0_101 or greater installed for XWiki >= 8.1 (Java 7 or greater for XWiki < 8.1, Java 6 or greater for XWiki versions < 6.0). {{warning}}For the moment we don't recommend running on Java 9+ since we're still testing it and fixing issues. If you really insist on Java 9+, make sure to use the latest released version of XWiki!{{/warning}}.
18 * A Servlet Container supporting Servlet 3.0.1 (Servlet 2.4 for XWiki versions < 7.0). Check the [[Servlet Containers officially supported by XWiki devs>>dev:Community.ServletContainerSupportStrategy.WebHome]].
19 * A Database and a JDBC 4 Driver for your database (JDBC 3 was required for XWiki versions < 7.0). Check the [[databases offically supported by XWiki devs>>dev:Community.DatabaseSupportStrategy]].
20 * A supported browser to access XWiki. Check the [[browsers offically supported by XWiki devs>>dev:Community.BrowserSupportStrategy]].
21 * Enough memory, check the [[Memory section>>Documentation.AdminGuide.Performances.WebHome#HMemory]] of the [[Performance Guide>>Documentation.AdminGuide.Performances.WebHome]].
22 * Enough [[CPU and RAM>>Documentation.AdminGuide.Performances.WebHome#HSizing]]
23 * Check the [[release notes>>xwiki:ReleaseNotes.WebHome]] for the version you're installing to see what browsers and databases have been tested for it, and to see specific requirements/installation steps. You can also check our [[general support strategy>>dev:Community.SupportStrategy]].
24
25 = Installation Methods =
26
27 For testing XWiki, we highly recommend one of the following installation method:
28
29 * [[Using XWiki in the cloud>>Hosted.WebHome]]: This is by far the simplest to try XWiki since you don't need to install anything.
30 * [[Using a standalone distribution >>Documentation.AdminGuide.InstallationStandalone]]: Provides a built-in XWiki, with a portable database (HSQLDB) and a lightweight Java container (Jetty). This standalone distribution is not recommended in a production environment. If you need to use it in a production basis, you may look at the other options.
31 * [[Using an official XWiki Docker image>>https://hub.docker.com/_/xwiki/]]: Provides an easy solution to test XWiki, with a configuration very close to a production setup. You can also use this method in production if you're used to putting Docker images in production.
32
33 For production installations, we recommend the following installation method:
34
35 * [[Using .deb package (usable for production)>>Documentation.AdminGuide.InstallationViaAPT]]: Provides a .deb package that can be used on a Debian-based operating system. It can be installed with ##dpkg## or ##apt##; installation is thus automated.
36
37 Last, you could manually deploy XWiki as a WAR into the Servlet Container of your choice and on the Database of your choice, if the previous methods were not good enough for your needs. Beware that this requires some technical knowledge about Servlet Container and Databses:
38
39 * [[Using .war package (usable for production)>>Documentation.AdminGuide.InstallationWAR]]: Provides a Java application package that has to be installed in a Java container (such as Tomcat). This can be used on almost any operating system.
40
41 {{warning}}
42 Whatever the installation method, you should make sure to [[create the database indexes manually for indexes that are not created automatically>>Documentation.AdminGuide.Performances.Database Administration.WebHome]].
43 {{/warning}}
44
45 = Other Installation Methods =
46
47 This section is about other, non-official ways of installing XWiki that have been contributed by the community.
48
49 {{warning}}
50 Tutorials external to the xwiki.org site have not been validated for correctness by the XWiki Development Team and it's also possible that they are out of date or even not working.
51 {{/warning}}
52
53 * [[How to install XWiki on Debian 9>>https://linuxhostsupport.com/blog/how-to-install-xwiki-on-debian-9/]]
54 * [[Ansible playbook for installing XWiki>>https://github.com/rastandy/xwiki-ansible-playbook]]
55 * [[Using yaourt on Arch Linux>>https://github.com/xwiki-contrib/packaging-archlinux]]
56 * [[XWiki On OpenShift (Platform-as-a-Service)>>https://github.com/rkmallik/xwiki-example]]
57 * [[XWiki On Windows>>http://agoncalves.developpez.com/tutoriels/xwiki/creer-un-site-associatif/]] (French)
58 * [[XWiki On Debian 4 (Etch) - Tomcat - PostgreSQL (or MySQL)>>http://www.howtoforge.com/xwiki-tomcat-mysql-debian-etch]] (English)
59 * [[XWiki On Debian 4 (Etch) - Tomcat - PostgreSQL (or MySQL)>>http://www.howtoforge.de/howto/xwiki-on-debian-4-etch-tomcat-mysql]] (German)
60 * [[XWiki On Windows - GlassFish - Oracle>>http://etvc.myxwiki.org/xwiki/bin/view/UNA/XWikiInstalation]] (Russian)
61 * [[XWiki on OpenSUSE - Tomcat - MySQL)>>http://geistreicher-papierkorb.blogspot.com/2011/03/setting-up-xwiki-on-opensuse-with-mysql.html]] (English)
62 * [[XWiki On Archlinux - Tomcat - hsql or MySQL>>https://github.com/xwiki-contrib/packaging-archlinux]] (English)
63 * [[Install XWiki on an Ubuntu 16.04 VPS>>https://www.rosehosting.com/blog/install-xwiki-on-an-ubuntu-16-04-vps/]] (English)
64 * [[Install XWiki using Docker compose>>https://zwindler.fr/wordpress/2016/09/15/installer-xwiki-8-2-1-avec-docker-compose-en-2-lignes-de-commandes]] (French)
65 * [[How to Install XWiki on CentOS 7>>https://thishosting.rocks/how-to-build-your-own-wiki-with-xwiki-on-centos/]] (English)
66 * [[XWiki in Windows - PostgreSQL - Tomcat 9 - Waffle>>https://www.youtube.com/watch?v=QLqsvQ5y6cI]] (English, video)
67 * [[XWiki 10.9 with LDAP/SSO/MSSQL on Windows>>http://www.ohjeah.net/2018/11/09/xwiki-10-9-with-ldapssomssql-on-windows/]]
68
69 = Troubleshooting =
70
71 You can verify some basic settings of your XWiki installation (on Tomcat, MySQL) using the [[Admin Tools application>>extensions:Extension.Admin Tools Application]]. Keep in mind that some of these tools only work in a Linux environment.
72
73 == What to do with an empty XWiki? ==
74
75 == Running multiple instances of XWiki in the same container ==
76
77 If you get this error:
78
79 {{code}}
80 com.xpn.xwiki.XWikiException: Error number 3 in 0: Could not initialize main XWiki context
81 Wrapped Exception: Failed to get cache factory component
82 ...
83 Caused by:
84 org.infinispan.jmx.JmxDomainConflictException: Domain already registered org.xwiki.infinispan
85 {{/code}}
86
87 You need to edit ##WEB-INF/cache/infinispan/config.xml## for each instance of XWiki.
88
89 1. For Infinispan up till version 6, change the ##jmxDomain## value (found under the ##globalJmxStatistics## tag) to have a unique name, or add ##allowDuplicateDomains="true"## attribute for ##globalJmxStatistics## element.
90 1. For Infinispan version 7, add ##<jmx duplicate-domains="true"/>## element in ##<cache-container...## element.
91
92
93 == Running XWiki behind a proxy server ==
94
95 The extension manager relies on remote repositories for finding and fetching available extensions. If your XWiki is installed in a network which requires accessing the internet through a proxy server, most likely searching for extensions will fail and log files will contain ##connection refused## exceptions.
96
97 In such cases, you can configure XWiki to use the proxy server.
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99 XWiki uses default Java proxy configuration through Apache httpclient. See the [[Java Networking and Proxies documentation>>http://docs.oracle.com/javase/6/docs/technotes/guides/net/proxies.html]] for more details.
100 The main idea is to add a set of proxy-related properties to the system scope.
101
102 For an installation using Tomcat 6 it could be done in the following way: modify ##/<tomcat-home>/bin/catalina.sh## and added proxies to the ##JAVA_OPTS## variable definition:
103
104 {{code}}
105 JAVA_OPTS="$JAVA_OPTS -Dappserver.home=$CATALINA_HOME -Dappserver.base=$CATALINA_HOME -Dhttp.proxyHost=proxy.mycompany.com -Dhttp.proxyPort=7777 -Dhttps.proxyHost=proxy.mycompany.com -Dhttps.proxyPort=7777 -Xmx512m -XX:MaxPermSize=196m $XWIKI_OPTS"
106 {{/code}}
107
108 For an installation of the HSQLDB demo package you could do it by adding something like this to ##/xwiki-platform-distribution-flavor-jetty-hsqldb-x.y/start_xwiki.sh##:
109
110 {{code}}
111 XWIKI_OPTS="$XWIKI_OPTS -Dhttp.proxyHost=proxy.mycompany.com -Dhttp.proxyPort=7777 -Dhttps.proxyHost=proxy.mycompany.com -Dhttps.proxyPort=7777"
112 {{/code}}
113
114 Note: If your proxy server only allows partial access to the internet you need to make sure that the sites ##store.xwiki.com##, ##extensions.xwiki.org## and ##nexus.xwiki.org## (note that one is .##com## and the others are ##.org##) can be accessed.
115
116 == Unsupported major.minor version 51.0 ==
117
118 This is because starting with version 6.0, XWiki requires Java 7 and you're using Java 6. You need to upgrade your Java version.
119
120 {{include reference="Documentation.AdminGuide.Installation.InstallationConcludingSteps.WebHome" section="HInstallingwithoutinternetconnection"/}}
121
122 == Getting an error about SSL certificate ==
123
124 If you get an error in the log telling you that it fail to access some some https website it usually means you have a too old version of Java 8 (older that update 101) and you should upgrade it (does not need to be upgraded to next major version of Java, just make sure you have at least Java 8 update 101).
125
126 {{code language="none"}}
127 2017-03-14 20:40:17,494 [http://dwswiki10:8080/xwiki/bin/admin/XWiki/XWikiPreferences?editor=globaladmin&section=XWiki.AddExtensions] ERROR aultExtensionRepositoryManager - Failed to search on repository [store.xwiki.com:xwiki:https://store.xwiki.com/xwiki/rest] with query [[email protected]]. Ignore and go to next repository.
128 org.xwiki.extension.repository.search.SearchException: Failed to search extensions based on pattern []
129 at org.xwiki.extension.repository.xwiki.internal.XWikiExtensionRepository.search(XWikiExtensionRepository.java:434)
130 ...
131 Caused by: java.io.IOException: Failed to request [https://store.xwiki.com/xwiki/rest/repository/search?start=0&number=20&q=]
132 at org.xwiki.extension.repository.xwiki.internal.XWikiExtensionRepository.getRESTResource(XWikiExtensionRepository.java:246)
133 ...
134 Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
135 at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
136 ...
137 Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
138 at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
139 ...
140 Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
141 at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:145)
142 ...
143 {{/code}}
144
145 == "File path too long" on Windows when unzipping ==
146
147 The Windows Operating System imposes a [[file path limit to around 260 characters>>https://msdn.microsoft.com/en-us/library/aa365247(VS.85).aspx#maxpath]]. XWiki's zip file can, in some cases, reach paths as long a 182 characters, or even longer. To avoid such errors you could do one of the following:
148
149 * Install in a folder that is as close to the root of the drive as possible and uses a small name, e.g. ##C:\xwiki##
150 * Install XWiki using the [[cygwin>>https://www.cygwin.com/]] environment that overcomes this limitation
151 * Starting with Windows 10, you can set or create the ##EnableLongPaths## with a value of ##1## in the in the ##HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem## Windows Registry in order to activate support for long paths. More details and step-by-step instructions are available in various online tutorials such as [[this one>>https://www.howtogeek.com/266621/how-to-make-windows-10-accept-file-paths-over-260-characters/]].

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