Apache Tomcat 7 (7.0.104) - Virtual Hosting and Tomcat

| # Apache Tomcat 7 Version 7.0.104, May 7 2020 |

Links Docs Home FAQ User Comments User Guide 1) Introduction 2) Setup 3) First webapp 4) Deployer 5) Manager 6) Host Manager 7) Realms and AAA 8) Security Manager 9) JNDI Resources 10) JDBC DataSources 11) Classloading 12) JSPs 13) SSL/TLS 14) SSI 15) CGI 16) Proxy Support 17) MBeans Descriptors 18) Default Servlet 19) Clustering 20) Load Balancer 21) Connectors 22) Monitoring and Management 23) Logging 24) APR/Native 25) Virtual Hosting 26) Advanced IO 27) Additional Components 28) Mavenized 29) Security Considerations 30) Windows Service 31) Windows Authentication 32) Tomcat's JDBC Pool 33) WebSocket Reference Release Notes Configuration Tomcat Javadocs Servlet Javadocs JSP 2.2 Javadocs EL 2.2 Javadocs WebSocket 1.1 Javadocs Common Annotations 1.1 Javadocs JK 1.2 Documentation Apache Tomcat Development Building Changelog Status Developers Architecture Functional Specs. Tribes | # Virtual Hosting and Tomcat
Table of Contents
Assumptions server.xml Webapps Directory Configuring Your Contexts General context.xml - approach #1 context.xml - approach #2 Defaults per host Further Information
Assumptions
For the sake of this how-to, assume you have a development host with two host names, `ren` and `stimpy`. Let's also assume one instance of Tomcat running, so `$CATALINA_HOME` refers to wherever it's installed, perhaps `/usr/local/tomcat`. Also, this how-to uses Unix-style path separators and commands; if you're on Windows modify accordingly.
server.xml
> At the simplest, edit the Engine portion of your `server.xml` file to look like this:
>     <Engine name="Catalina" defaultHost="ren">
>         <Host name="ren"    appBase="renapps"/>
>         <Host name="stimpy" appBase="stimpyapps"/>
>     </Engine>
Note that the directory structures under the appBase for each host should not overlap each other. Consult the configuration documentation for other attributes of the Engine and Host elements.
Webapps Directory
> Create directories for each of the virtual hosts:
>     mkdir $CATALINA_HOME/renapps
>     mkdir $CATALINA_HOME/stimpyapps
Configuring Your Contexts
> General
> Contexts are normally located underneath the appBase directory. For example, to deploy the `foobar` context as a war file in the `ren` host, use `$CATALINA_HOME/renapps/foobar.war`. Note that the default or ROOT context for `ren` would be deployed as `$CATALINA_HOME/renapps/ROOT.war` (WAR) or `$CATALINA_HOME/renapps/ROOT` (directory). NOTE: The `docBase` for a context should never be the same as the `appBase` for a host.
> context.xml - approach #1
> Within your Context, create a `META-INF` directory and then place your Context definition in it in a file named `context.xml`. i.e. `$CATALINA_HOME/renapps/ROOT/META-INF/context.xml` This makes deployment easier, particularly if you're distributing a WAR file.
> context.xml - approach #2
> > Create a structure under `$CATALINA_HOME/conf/Catalina` corresponding to your virtual hosts, e.g.:
> >     mkdir $CATALINA_HOME/conf/Catalina/ren
> >     mkdir $CATALINA_HOME/conf/Catalina/stimpy
> > Note that the ending directory name "Catalina" represents the `name` attribute of the Engine element as shown above. Now, for your default webapps, add:
> >     $CATALINA_HOME/conf/Catalina/ren/ROOT.xml
> >     $CATALINA_HOME/conf/Catalina/stimpy/ROOT.xml
> > If you want to use the Tomcat manager webapp for each host, you'll also need to add it here:
> >     cd $CATALINA_HOME/conf/Catalina
> >     cp localhost/manager.xml ren/
> >     cp localhost/manager.xml stimpy/
> Defaults per host
> You can override the default values found in `conf/context.xml` and `conf/web.xml` by specifying the new values in files named `context.xml.default` and `web.xml.default` from the host specific xml directory. Following our previous example, you could use `$CATALINA_HOME/conf/Catalina/ren/web.xml.default` to customize the defaults for all webapps that are deployed in the virtual host named `ren`.
> Further Information
> Consult the configuration documentation for other attributes of the Context element.
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