I haven't been able to figure out how to deploy multiple grails applications with Apache/Tomcat where a virtual host is mapped to each grails app
I can get it so that
http://virtualhost1.example.com/myGrailsApplication-0.1/
works, but what I want is for
http://virtualhost1.example.com/
to go directly to my application. A lot of tutorial sites on the web just have you make your web app the "ROOT" one, but that won't work in a mutiple grails-app virtual host environment.
I tried using the
<Host name="virtualhost1.example.com" ...> </Host>
tags in the tomcat/conf/server.xml file, but it didn't seem to do anything (and, yes, I restarted tomcat each time I changed it.)
I also tried everything I could think of in my apache config file for the virtual host, and couldn't get it to work.
So, how can I get rid of the app name in the URL when I have multiple grails webapps, virtual hosts, and I don't want my webapp to be "ROOT"?
I'm assuming that you are using mod_jk to connect Apache & Tomcat. If so, You will have to have to configure virtual hosting within Tomcat as well as Apache (multiple <Host> declarations in your conf/server.xml)
This basically means that you'll have two <Host ...> declarations within conf/server.xml. They will have different names, and appBase, but you will still have to name the war ROOT.war
The example that they gave was:
<Engine name="Catalina" defaultHost="ren">
<Host name="ren" appBase="renapps"/>
<Host name="stimpy" appBase="stimpyapps"/>
</Engine>
After you've configured the DNS of your virtual '<host>s'(much like Apache) you'll have to put your ROOT.war(s) into separate folders {renapps,stimpyapps} instead of the default 'webapps' folder
This method works, but there is another method using mod_proxy instead of mod_jk. I'm not that familiar with mod_proxy but basically you would have the connector handle translating the root context to the actual context. So after its configured it would proxy & forward requests sent to http://virtualhost1.example.com/ to the right context within Tomcat (/myGrailsApplication-0.1/)
Let us know what you find! Anyone else do this with mod_proxy?
Related
I'm running tomcat and I want to change the default webroot so that it points to another location. Is there a way to find out what's running tomcat or where the default webroot is set as I can't find httpd.conf which is where I believe it's usually set?
Cheers,
Alexei Blue.
**UPDATE:**
It's been a long time since I looked at this question that I forgot about it. In the end it turned out that we were using Apache HTTPD to accept requests from port 80. From there we had the webroot and ProxyPass rules set in the /etc/httpd/conf/virtual-hosts/default.conf file (these can also be set in /etc/httpd/conf/httpd.conf). From there we had several tomcat instances running, all hosted on different ports which are setup in apache-tomcat-x/conf/server.xml.
When I wrote this question I was trying to setup a new tomcat instance to run an application in development and was told I would need to change the webroot to access my application, which was incorrect. Instead what I needed was to include a ProxyPass rule so that when my application name was recognised in the URL, HTTPD would send the request to the correct tomcat instance to be processed.
E.g.
www.domain.com/myApplication
In /etc/httpd/conf/virtual-hosts/default.conf
ProxyPass /myApplication/ ajp://127.0.0.1:<ajp_port>/myApplication/
ProxyPassReverse /myApplication/ ajp://127.0.0.1:<ajp_port>/myApplication/
Where the ajp_port is setup in apache-tomcat-x/conf/server.xml. I needed to ensure that non of the ports conflicted with other tomcat instances so remember to check all ports i.e. Shutdown, HTTP, HTTP with SSL, AJP etc.
Tomcat doesn't use httpd.conf, that is an apache file. The location of the individual webapps are kept in their individual web.xml files, but the location of all the configs are in ../tomcat6/conf/server.xml and web.xml
Is it where the files come from you want to move, or where it compiles and executes them from?
As #Woody says, Tomcat does not use httpd.conf files: that's an Apache httpd thing (httpd is a web server, Tomcat is a Java application server).
You didn't mention what OS you are using or what package management software you are using (e.g. yum, apt, etc.) so I'll give you generic information as if you had downloaded and installed Tomcat directly from apache.org (which I usually recommend people do for a number of reasons).
Tomcat keeps its server-wide configuration in the conf/server.xml file in the Tomcat base installation directory (often called $CATALINA_BASE for convenience): here, you configure things like what types of connectors (e.g. HTTP, HTTPS, AJP, etc.) to use and which ports they should listen to, clustering configuration, session persistence, global JNDI and realm resources. There are also conf/web.xml and conf/context.xml files that define defaults for all webapps deployed on that instance of Tomcat, but it's best to leave those files alone unless you have a really good reason to modify them.
When you want to deploy a webapp (under the default configuration), all you need to do is drop a .WAR file into the $CATALINA_BASE/webapps/ directory and the webapp will be deployed into a "context path" (aka URL prefix) that matches the name of the file minus the ".WAR" suffix. So, if you have a WAR file called mygreatwebapp.war, then it will be deployed such that your clients can reach it at http://yourhost/mygreatwebapp/. There is a special name you can give a WAR file so that it has an empty context path: if you name your WAR file ROOT.war (case matters), then your webapp can be reached at http://yourhost/. (If you would rather use exploded-WAR directories instead of WAR files, everything above still applies except the directories simply don't have the .war extension).
Given your original question, it sounds like all you want to do is drop a ROOT.war file into $CATALINA_BASE/webapps (or replace the one that is already there): this will deploy whatever webapp you want into the URL space that you might call the "default webroot".
Update
If you want to change the directory where all the webapps live for a host, you can modify $CATALINA_BASE/conf/server.xml and change the <Host>'s appBase attribute to point to, say, /cfusion/main/www/. That will deploy all the WAR files and directories in /cfusion/main/www/ as separate webapps.
If you just want to serve a single webapp from an arbitrary location, you may create a deployment file under $CATALINA_BASE/conf/[EngineName]/[HostName]/[appname].xml. This is a standard file like META-INF/context.xml and contains a <Context> element except that you will have to specify a docBase which points to your webapp (e.g. /cfusion/main/www/mywebapp).
I'd like run jsp files directly from /srv/http without deploying them the Tomcat-way. For example, I want to be able to create symbolic link to my webapp directory (e.g. /home/user/myapp/) in /srv/http and access some app's page through http://localhost/myapp/page.jsp.
Is this possible and how would I set this up?
NOTE: This is not for production. We have to use JSP at university and I want to be able to quickly test my pages.
Open the server.xml of your Tomcat. Assuming if your are using Tomcat 6.x+ then it would be at /tomcatDir/conf/server.xml.
Make an entry with your path
<Context path="/myapp" docBase="yourPathGoesHere" debug="0" reloadable="true" />
Restart Tomcat if already running.
What I did at the moment was creating a symlink in /var/lib/tomcatX/webapps to my project path. This is not the answer I was looking for though, but it is a way to deploy an app without much work.
(X in the above path means your Tomcat version)
If you set <Host name="localhost" appBase="/srv/http"> then all of the directories in it will be deployed as web applications.
If you want /srv/http to be the ROOT application/directory add a file: tomcat/conf/Catalina/localhost/ROOT.xml
with the Context docBase="/srv/http", rather than adding a Context definition to server.xml - this has been strongly discouraged for years.
I am using an apache web server and a tomcat server for hosting few webapplications.
These webapplications not very different from one another and I want to consolidate all these webapplications into one webapp to minimize the process overheads.
The webapplications are currently being accessed with separate urls ex: localhost:8080/webapp1, localhost:8080/webapp2.
Without changing the urls is there a way that I can host a webapplication on tomcat say "singlewebapp" such that it will respond to both localhost:8080/webapp1 as well as localhost:8080/webapp2?
One of my team members suggested an idea on symlinks and junctions which triggered a discussion on apache tomcat's docbase feature and we found a very elegant answer to this question in it.
Let's say the webapplication is abc.war. We deploy abc.war in tomcat webapps as abc folder then we need to configure the server.xml of tomcat as follows and restart tomcat:
<Host ...>
...
<Context path="/webapp1" docBase="/abc" />
<Context path="/webapp2" docBase="/abc" />
</Host>
Believe this is very useful usage for supporting white-labelling and multi-tenancy.
I dont think you can do this in that way. Looks like your host name and ports for all the applications are same, but context roots (webapp1 and webapp2) are different. We cannot have sinlgle context root to access myltiple applications with same host name and port.
Every web server can run one application on one port and host combination. If you want to run multiple applications on the same host, obviously you need to add as many virtual IPs and should be configured in your web server .config file to make the applications accessible virtually.
We can create virtual servers on web server based on IP address ( there are software and hardware virtual server concepts which you need to study). To have multiple IP address on your single server you need add as many ethernet cards to expand the number of IPs virtually.
If you fine to use virtual server concept , offcourse you need slightly change your requirement.
Instead of editing server.xml make context.xml in local host(or your host) of catalina of tomcat. because if edit server.xml we need to restart the server.
creation of context.xml :
xml file name must be your path name i,e webapp1/webapp2
data in xml as follows (if you are creating path for abc.war file)
a). xml file name is webapp1.xml
b). xml file name is webapp2.xml
"lessthan symbol" ?xml version="1.0" encoding="UTF-8" standalone="yes"?>
"lessthan symbol" Context reloadable="true" privileged="true" docBase="${catalina.home}/abc" crossContext="true" antiResourceLocking="false" allowLinks="true"/>
above xml files must be place in tomacat/conf/Catalina//
At work we have many Spring apps running on one tomcat server. Some of the apps have their own domains with a virtualhost in apache that rewrites requests from /url to /context_root/url.
This is all fine and good except for when I use some of springs tag libs that handle urls. An example is the <form:form> tag which creates an action of /context_root/form and takes the user away from /. Now, the app still works when that happens but management doesn't want to see the context root.
What is the best way to tackle this?
In case anyone stumbles into this, I did end up finding the answer.
With Tomcat you can have multiple hosts. So I setup a host with my app as the default webapp. Here's an example:
Add another Host to server.xml
<Host name="lilhug.mydomain.com" appBase="lilhug"
unpackWARs="true" autoDeploy="true"
xmlValidation="false" xmlNamespaceAware="false"/>
Create some files and directories
mkdir $CATALINA_HOME/lilhug
mkdir $CATALINA_HOME/conf/Catalina/lilhug.mydomain.com
If you want the Tomcat manager for this host
cd $CATALINA_HOME/conf/Catalina
cp localhost/manager.xml lilhug.mydomain.com
Then restart tomcat and you're good. Deploy the lilhug app to / using the /manager running at your new host or copy the war to $CATALINA_HOME/lilhug/ROOT.war
I have a server app with Apache 2.2 (+mod_jk) + Apache Tomcat 6.0 that works fine. I can get to the web application's home page typing http://the_ip/application in the browser. But I want to access that page at the root address http://the_ip. Right now I am getting Tomcat's Root page
Can someone point me to a doc or posting that explains how to proceed with this?
Thanks
Peter
You want to set webapp application as the default web app (i.e. access it directly via http://localhost:8080/), then you can set the path as "" in Context within <Host> in server.xml
. This should work
<Context docBase="/var/lib/tomcat6/webapps/application/" path="" reloadable="true>
From the Tomcat docs,
If you specify a context path of an
empty string (""), you are defining
the default web application for this
Host, which will process all requests
not assigned to other Contexts
Note: From the Tomcat 6 docs http://tomcat.apache.org/tomcat-6.0-doc/config/context.html#Introduction it is recommended not to put this in server.xml since you need to restart Tomcat for any changes.
The default web application may be
defined by using a file called
ROOT.xml
but i have not tried that option myself