How to keep apache as front and tomcat as back end? - apache

Basically i want my tomcat to run on PORT 80 how do i do that because whenever i have to access something then i have to go for localhost:8080/resource but instead i want to use the link as only localhost/resource how do i achieve this?
Currently on my machine apache is running on 800 port and tomcat on 8080.

it seems you are looking for something called Reverse Proxy. Using Reverse Proxy, you will have
apache on 80 port
tomcat on 8080 port
so when access http://xxx.test.com/resource, the request first go though apache, apache then pass the request tomcat, tomcat do the corresponding things and return response to client.
have a look at:
http://www.apachetutor.org/admin/reverseproxies
mod_jk: http://tomcat.apache.org/download-connectors.cgi

Tomcat documentation has a HOWTO for this.
http://tomcat.apache.org/connectors-doc/webserver_howto/apache.html
Its a good practice to never expose Tomcat directly internet. You can use Apache for serving static content and send only those requests to tomcat that need dynamic content.

In server.xml find the element that reads
Connector port="8080"
and change it to 80. Save and restart tomcat.
Just make sure that apache is running on port 800 otherwise it will now clash with tomcat.

To modify the HTTP port for Tomcat, modify the configuration file server.xml (located in Tomcat's conf directory). Find the HTTP connector element (that is currently configured to port 8080), change the port number to 80, and restart Tomcat.
Note that this is not going to work if any other running service is currently bound on port 80.

Related

How to change default 80 port to my tomcat 8080 for my domain name

I am using tomcat on Linux centOs server. I want my java application is working fine on mydomain.com:8080. I want that my when some one hit the domain mydomain.com it automatically move to my java application.
Changin server.xml didm't worked for me. as i am also having apache2 on the server
I guess you have an apache server in port 80. I you do not want to remove apache and change directly the tomcat port ( see comments), you will need to redirect all traffic from port 80 to port 8080.
This can be done using tomcat connectors. They are plugins to connect web servers with Tomcat. When a HTTP request arrives, the plugin checks is it has to be redirected, connects to tomcat and returns the response to server
In the case of apache is needed to install mod_jk. In the link you can see the configuration

Tomcat through Apache

I'd like to know if is a good decision to configure tomcat through port 80 (in apache with virtual-hosts ).
I need to setup a tomcat service in the same server I have apache, plus I need to use Tomcat through port 80.
Is this right? or is best to use them in separated servers?
That's OK. But sometimes tomcat is deployed with Apache. The Apache is a front-end server to balance load. And many tomcats are as back-end servers.

How to block port 8080

I'd like to block port 8080, because people are able to access my website at www.foo.com:8080, which I don't want. People should only be able to access www.foo.com. I'm using Apache on port 80 and mod_proxy to redirect calls to Tomcat on 8080.
I'm kind of at a loss. Any help is greatly appreciated.
Thanks!
Try using mod_proxy_ajp instead for request forwarding to Tomcat. Then configure the Tomcat instance with an AJP connectior only (and no HTTP connector). This way, it cannot be accessed directly with a browser.
Anyway it's always a good idea to introduce a firewall as mentioned in the comments, for only exposing services you want to be available.

How do I redirect from Apache to Tomcat?

I'm working on my first Java site. I'm running Apache Tomcat on port 8080, and Apache HTTPD on port 80. The current URL that I can access the site at is (for example) 123.4.5.6:8080. I want to remove the port number from the URL before I point the domain at the new IP.
At the moment I am only using Apache for phpmyadmin, however I plan on using it for CGI scripts and other stuff once I figure out mod_jk etc... So I don't want to change Tomcat's port to 80 and turn off Apache.
I hope this makes sense.
The correct way to do things is to leave Apache at 80 and Tomcat at 8080 and use a plug in (preferably mod_proxy) to proxy Tomcat from Apache. mod_proxy would only take you 10 minutes to set up.
This how-to is very simple to follow.
The usual way this is done, as you already mentioned, is to use mod_jk from Apache HTTPD to forward that content that you want to be processed by Tomcat.
There is a Quick HowTo at tomcat.apache.org. You need to do the following:
Copy mod_jk.so into the appropriate modules directory for Apache HTTPD.
Create a configuration file workers.properties
In Apache HTTPD's httpd.conf, add a section to configure mod_jk.
Ensure that Tomcat is configured to accept the mod_jk protocol, which is usually on port 8009.
The lines in httpd.conf with JkMount:
JkMount /examples/* worker1
tell Apache HTTPD which requests are to be forwarded to Tomcat.
Both the helpful answers above are good, but I much prefer mod_proxy over mod_jk. There's no extra installation to do for mod_proxy, unlike mod_jk, and the setup is much easier. mod_jk gives you more control over detailed tuning of Tomcat parameters, but if you just want a simple redirect from Apache to Tomcat, mod_proxy is the way to go.
If you want static content to be served by Apache instead of Tomcat you should use mod_jk : http://tomcat.apache.org/tomcat-6.0-doc/proxy-howto.html
And what about SSL - if we want Apache to handle HTTPS, because it is faster then java/Tomcat?
you should configure your tomcat using this link. for tomcat 7
http://tomcat.apache.org/tomcat-7.0-doc/proxy-howto.html

Apache is listening on a different port, but how do I get it so I don't have to type in the port number?

I am running IIS and Apache HTTP Server side-by-side on my localhost machine, and Apache is listening on a different port (port 81). IIS is listening to port 80. However, I can only get to my virtual domains for Apache if I type in that port number. So for instance:
http://virtual.myvirtualdomain.com:81
http://virtual.myvirtualdomain2.com:81
How can I make it so Apache automatically knows it is port 81, and does not force me to type in the port number?
EDIT:
The answer appears to be that I need to redirect IIS to Apache. Can anyone provide clarification on how that is done with IIS 5.1?
It's not a matter of telling Apache, it's a matter of the browser knowing what to connect to. You're either going to have to have IIS redirect to Apache, or give up.
You have to type in the port number so your client knows where to connect to. This has nothing to do with the server.
On Unix systems you might be able to modify your /etc/services to list 81 as port for http. But that would effectively disable access to all websites that are located on port 80.
Alternatively you can configure your IIS on port 80 to locally proxy requests for the sites which are on apache. Then all clients would ask the IIS for a page, which would make a local connection to port 81.
I did some more research and it turns out that you can't redirect IIS 5.1 to Apache because that would require multiple Web sites (setup as redirects to the virtual hosts on Apache on port 81). This is because IIS 5.1 on Windows XP Pro can't do multiple Web sites (running at the same time without the scripting hack). Oh well.
How about you swap it? Make Apache listen on port 80, IIS on port 81 for whatever you need and have Apache redirect? Apache shouldn't be restricted to the same one-website per machine that IIS 5.1 is.
You can't. The 81 is telling your browser where to look for Apache.
You can't.
It's the job of your web client to specify the port, and until you do specify that port it won't even reach Apache.
What you could potentially do is have IIS also listen for the same HTTP/1.1 virtual hosts, and then arrange for it to issue a 302 Moved redirect to send your browser to the right port number.
Alternatively, run a second IP address on your machine, and bind IIS to the original IP address and Apache to the second. That way you don't need to use different ports at all.
There is no way to do exactly what you ask. About the only way would be to configure IIS -- for the virtual domains being served by IIS -- to forward to Apache on port 81. With this configuration, the client would not be aware that their requests were passing through IIS on their way to Apache. A little less efficient, but it would solve your needs.
When an url is typed, there is a certain port that the browser has to use to connect to the site. 80 is the default port that the server checks. If you need to connect to any other port via a browser, you would need to have the port number in the url. It is not apache that is forcing you to type 81, but rather your browser because it is set to use 80 as the port when a port number is not specified.
If you were to change apache's port to 80 and IIS port to 81, then you be able to connect to apache without the port number but you will need to use the port number when using the IIS webserver.
Not sure what the others idea is behind using apache to redirect to IIS. It sounds like to me that if you make an entry in httpd.conf of apache for IIS directory, then you be using apache to connect to the directory, not IIS.
You could set up a domain and have it connect to apache via port 81. That is one way to hide the port number (might be not true. I have never tried apache on port other than 80).