I have got two web applications (separate virtual directories) residing in the DefaultAppPool on Windows Server 2003. My first application has got a link and when I click on it, the second application opens up.
Now I want to use different .Net framework for both web applications and for that in IIS 6.0, I will have to host them in separate app pools.
Now the question is - is it possible to host them in different app pools and keep the behavior intact so that if I click on the link in first web application, it can still open the second web application hosted in a different app pool?
Thanks in advance,
D
I think I've found the solution and it is simpler than what I actually thought.
Steps I took:
Create another app pool in IIS 6.0 on Windows Server 2003
Assign one of the web applications to this pool. So now I have two web applications in two different app pools. Currently both are having ASP.NET version as 2.0.50727
Change the ASP.NET version of one of the applications to 4.0.30319. So interesting fact to understand here is - in IIS 6, you can't set the .NET framework for an app pool. It actually assumes it from the first application in it and then applies it to all the web applications residing in this app pool
And it is done!!
It can be checked to list all the sites and which .NET versions they are configured to by using aspnet_iisreg -lk. Run this command from your .NET framework directory. For ex: C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319
Both the sites with different .NET framework will be listed
Hope this helps.
I have to debug a WCF hosted in local IIS. Each time I have to attach two processes "w3wp.exe".
One ID is 7624, the other is 8372.
Users: one is "IIS APPPOOL\ASP.NET V4.0 Integrated[administrator]
the other one is "IIS APOOL DefaultAppPool[administrator]
Questions:
What they are? (google search but bo clue)
Can I just attach one process rather all?
Thanks
Updated:
See IIS image:
Just check in your IIS Management Console the Application Pool in which your site resides, then attach to the proper one. Probably, as you're using WCF, you're running under .NET 4, so under the first process you linked.
Application pool is the set of apps that run under same worker process.
Important thing in practice is that one app pool can serve only applications with same version of .NET (version of .NET CLR - to be precise). It is also good to remember that applications from the same app pool will "share" recycling of worker process.
So, you should look up at the IIS in which app pool your service is running and debug only process associated with this app pool.
They are Application Pool Identities. This is the newer (and securer) way of assigning priveleges to websites. Essentially a site runs on its own application pool, so you assign rights to files based on that pool.
See: http://www.iis.net/learn/manage/configuring-security/application-pool-identities
What is difference between application domain and application pool?
I have read many articles regarding these two terminology. but still unable to get proper understanding about them.
Please elaborate it with simple description.
Thanks
IIS process is w3wp;
Every application pool in IIS use it's own process;
AppPool1 uses process 3784, AppPool2 uses process 5044
Different applications in Asp.net will use different
AppDomain;
AppTest1 and AppTest2 are in different AppDomain, but in
the same process.
What's the point to use them?
Application pool and AppDomain , both of them can provide
isolations, but use different approaches. Application pool
use the process to isolate the applications which works
without .NET. But AppDomain is another isolation methods
provided by .NET.
If your server host thousands of web sites, you wont use
thousands of the application pool to isolate the web sites,
just because, too many processes running will kill the os.
However, sometime you need application pool. One of the
advantages for application pool is that you can config the
identity for application pool. Also you have more flexible
options to recycle the application pool. At least right now,
IIS didn't provide explicit options to recycle the appdomain.
An application pool is a group of one or more URLs of
different Web applications and Web sites. Any Web directory
or virtual directory can be assigned to an application pool.
Every application within an application pool shares the same
worker process executable, W3wp.exe, the worker process that
services one application pool is separated from the worker
process that services another [Like starting MS Word and
opening many word documents]. Each separate worker process
provides a process boundary so that when an application is
assigned to one application pool, problems in other
application pools do not affect the application. This
ensures that if a worker process fails, it does not affect
the applications running in other application pools. [i.e]
for Eg., If word document is having issue it should not
logically affect your Excel Sheet isn’t it.
application domain is a mechanism (similar to a process in
an operating system) used to isolate executed software
applications from one another so that they do not affect
each other. [i.e] opening of MS WORD doesn’t affect MS EXCEL
you can open and close both the applications any time since
there is no dependency between the applications. Each
application domain has its own virtual address space which
scopes the resources for the application domain using that
address space.
Thanks to this link
I've read where you create a new application pool, one for 2.0 sites and one for 4.0 sites. But there is no option I see when creating a pool to configure the framework.
My problem is I have several 2.0 sites running as the Default Web Site. I added a WCF 4.0 service under a new virtual directory and set the framework to 4.0. I also put it in a separate app pool.
Now, I can only get one working at a time. Either the 2.0 sites or the 4.0 site. I get:
It is not possible to run two
different versions of ASP.NET in the
same IIS process. Please use the IIS
Administration Tool to reconfigure
your server to run the application in
a separate process.
Is it possible to do this under IIS6 and Windows Server 2003?
To clarify: Each app pool binds to the .NET framework of the first web site that uses it, in order of application startup. That first site will run fine, but all other sites will be restricted to the same app pool. You need at least one app pool per framework version; and in my experience, the most robust setup is one app pool per application - this way, you can switch framework versions without worrying about other applications, and you can kill individual applications through task manager when the need arises.
The App Pools don't need configuring, just make sure the 2.0 sites are running as one, and the 4.0 site running as another.
What exactly is an application pool? What is its purpose?
Application pools allow you to isolate your applications from one another, even if they are running on the same server. This way, if there is an error in one app, it won't take down other applications.
Additionally, applications pools allow you to separate different apps which require different levels of security.
Here's a good resource: IIS and ASP.NET: The Application Pool
I second the top voted answer, but feel like adding little more details here if anyone finds it useful.
short version:
IIS runs any website you configure in a process named w3wp.exe. IIS
Application pool is feature in IIS which allows each website or a part
of it to run under a corresponding w3wp.exe process. So you can run
100 websites all in a single w3wp.exe or 100 different w3wp.exe. E.g.
run 3 websites in same application pool(same w3wp.exe) to save memory
usage. ,run 2 different websites in two different application pools so
that each can run under separate user account(called application pool
identity). run a website in one application pool and a subsite
'website/app' under a different application pool.
Longer version:
Every website or a part of the website,you can run under an application pool.You can control some basic settings of the website using an application pool.
You would like the website to run under a different w3wp.exe process.Then create a new application pool and assign that to the website.
You would like to run the website and all it's code under a different user account(e.g under Admin privileges),you can run do that by changing Application Pool Identity.
You would like to run a particular application under .net framework 4.0 or 2.0.
You would like to make sure the website in 32 bit mode or have a scheduled recycle of the w3wp.exe process etc.All such things are controlled from iis application pool.
Basically, an application pool is a way to create compartments in a web server through process boundaries, and route sets of URLs to each of these compartments. See more info here: http://technet.microsoft.com/en-us/library/cc735247(WS.10).aspx
An application pool is a group of one or more URLs that are served by a worker process or set of worker processes. Any Web directory or virtual directory can be assigned to an application pool.
Every application within an application pool shares the same worker process.
Assume scenario where swimmers swim in swimming pool in the areas reserved for them.what happens if swimmers swim other than the areas reserved for them,the whole thing would become mess.similarly iis uses application pools to seperate one process from another.
IIS-Internet information Service is a web server used to host one or more web application .
Lets take any example here say Microsoft is maintaining web server and we are running our website abc.com (news content based)on this IIS.
Since, Microsoft is a big shot company it might take or also ready to host another website say xyz.com(ecommerce based).
Now web server is hosting i.e providing memory to run both websites on its single web server.Thus , here application pools come into picture .
abc.com has its own rules, business logic , data etc and same applies to xyz.com.
IIS provides two application pools (path) to run two websites in their own world (data) smoothly in a single webserver without affecting each ones matter (security, scalability).This is application pool in IIS.
So you can have any number of application pool depending upon on servers capacity
An application pool is a group of urls served by worker processors or set of worker processors.
There can exist any number of application pools.
In IIS it is possible to create more than one application pool.
An application in different application pool runs in different worker processors.
Advantage: If an error occurred in one application pool will not effect the applications running in another application pool.
An Application pool is a collection of applications which uses the same worker process of IIS (w3wp.exe). Primary concern of using Application pool is to isolate two different applications with different security concerns and also to avoid crashing of applications due to worker process death.
An application pool is a group of one or more URLs that are served by a worker process or set of worker processes. Application pools are used to separate sets of IIS worker processes that share the same configuration and application boundaries. Application pools are used to isolate our web application for better security, reliability, availability and performance, and they keep running without impacting each other.
Application pools are used to separate sets of IIS worker processes that share the same configuration and application boundaries.
Application pools used to isolate our web application for better security, reliability, and availability and performance and keep running without impacting each other . The worker process serves as the process boundary that separates each application pool so that when one worker process or application is having an issue or recycles, other applications or worker processes are not affected. One Application Pool can have multiple worker process Also.
Or we can simply say that, An application pool is a group of one or more URLs that are served by a worker process or set of worker processes. Any Web directory or virtual directory can be assigned to an application pool. So that one website cannot be affected by other, if u used separated application pool.
Source : Interviewwiz
An application pool is like a pond, if I create 2 application pools, first application pool has 100 fishes and another application pool has 200 fishes, here fish is like an application in application pool.
They are managed by worker processes. Best advantage is: if pond number-1 has bad water and cases all fish are effected then there is security of fish in pond number-2. Like this if any application pool is affected by any problem but there is not any effect of this problem in application pool 2 so security improves, and another benefit is that is you provide all the necessary authentication and rights to all applications in a single application pool.
An application pool is a group of one or more URLs that are served by a worker process or set of worker processes. Application pools are used to separate sets of IIS worker processes that share the same configuration and application boundaries.
Application pools are used to separate set of IIS worker processes that share the same configuration.
Application pools enable us to isolate our web application for better security, reliability, and availability
The application Pools element contains configuration settings for all application pools running on your IIS. An application pool defines a group of one or more worker processes, configured with common settings that serve requests to one or more applications that are assigned to that application pool.
Because application pools allow a set of Web applications to share one or more similarly configured worker processes, they provide a convenient way to isolate a set of Web applications from other Web applications on the server computer.
Process boundaries separate each worker process; therefore, application problems in one application pool do not affect Web sites or applications in other application pools. Application pools significantly increase both the reliability and manageability of your Web infrastructure.
application pool provides isolation for your application. and increase the availability of your application because each pool run in its own process so an error in one app won't cause other application pool. And we have shared pool that hosts several web applications running under it and dedicated pool that has single application running on it.