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Posted to users@tomcat.apache.org by "Clough, Don" <dc...@naswa.org> on 2020/04/21 13:20:22 UTC
Removing Tomcat ROOT directory causes the server to hang on startup
Good Morning,
Tomcat version 8.5.15
Is it possible to remove the tomcat ROOT directory? We have several applications running on a tomcat instance. I was asked to clean the webapps directory up and remove any unused folders. I removed manager host-manager docs examples Everything is fine, as I expected. I looked at the ROOT folder an there are images, a couple of jsp pages and a WEB-INF directory. None of these are used by our applications, so I removed the ROOT directory. Now the server hangs on startup and my applications don't start. Can the ROOT directory be removed? It appears that according to the Apache docs it is optional:
"The ROOT web application presents a very low security risk but it does include the version of Tomcat that is being used. The ROOT web application should normally be removed from a publicly accessible Tomcat instance, not for security reasons, but so that a more appropriate default page is shown to users."
I tried leaving just an empty ROOT directory, but it still hangs. Is there a configuration that I'm missing somewhere that could be looking for the ROOT directory?
Thanks,
Don
Don Clough | Java Developer
National Association of State Workforce Agencies
444 North Capitol St., NW | Suite 142 | Washington, DC 20001
E dclough@naswa.org<ma...@naswa.org>| W naswa.org<http://www.naswa.org/>
[naswa]
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Re: Removing Tomcat ROOT directory causes the server to hang on startup
Posted by calder <ca...@gmail.com>.
On Tue, Apr 21, 2020, 08:20 Clough, Don <dc...@naswa.org> wrote:
> Good Morning,
>
> Tomcat version 8.5.15
>
> Is it possible to remove the tomcat ROOT directory?
>
Yes - not required ... unless you want the functionality provided therein.
Re: [OT] Removing Tomcat ROOT directory causes the server to hang on
startup
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Don,
On 4/22/20 09:12, Clough, Don wrote:
> Thanks for all the feedback! I will continue to debug why our
> particular installation hangs when I remove the ROOT. I was able to
> do this on a fresh installation on my local machine.
Take some thread dumps to find out what's happening.
Wild guess without any other information: you are out of entropy, and
you'll find that either TLS initialization or session-manager
initialization is where things hang-up. (This will have nothing to do
with the presence of the ROOT web app).
- -chris
> -----Original Message----- From: Christopher Schultz
> <ch...@christopherschultz.net> Sent: Tuesday, April 21, 2020 6:33
> PM To: users@tomcat.apache.org Subject: Re: [OT] Removing Tomcat
> ROOT directory causes the server
to hang on startup
>
> Don,
>
> On 4/21/20 09:20, Clough, Don wrote:
>> Is it possible to remove the tomcat ROOT directory? We have
>> several applications running on a tomcat instance. I was asked to
>> clean the webapps directory up and remove any unused folders.
> This is a good idea. But it's also a good idea to have a ROOT web
> application. It just doesn't have to be (and shouldn't be!) the
> default Tomcat root web application.
>
> Why?
>
> Well, if you navigate to /doesnotexist.html or
> /does/not/exist.html, unless your application is ROOT or happens to
> be mounted on "/does", Tomcat has no application to "assign" the
> request to, so it MUST generate a generic error message.
>
> If you want to be able to handle all possible 404 responses with a
> nice, application-branded "not found" page, you'll need to roll a
> ROOT web application which has just some basic configuration for
> things like errors, and the pages which will be returned when you
> get those errors.
>
> -chris
>
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RE: [OT] Removing Tomcat ROOT directory causes the server to hang on
startup
Posted by "Clough, Don" <dc...@naswa.org>.
Thanks for all the feedback! I will continue to debug why our particular installation hangs when I remove the ROOT. I was able to do this on a fresh installation on my local machine.
-----Original Message-----
From: Christopher Schultz <ch...@christopherschultz.net>
Sent: Tuesday, April 21, 2020 6:33 PM
To: users@tomcat.apache.org
Subject: Re: [OT] Removing Tomcat ROOT directory causes the server to hang on startup
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Don,
On 4/21/20 09:20, Clough, Don wrote:
> Is it possible to remove the tomcat ROOT directory? We have several
> applications running on a tomcat instance. I was asked to clean the
> webapps directory up and remove any unused folders.
This is a good idea. But it's also a good idea to have a ROOT web application. It just doesn't have to be (and shouldn't be!) the default Tomcat root web application.
Why?
Well, if you navigate to /doesnotexist.html or /does/not/exist.html, unless your application is ROOT or happens to be mounted on "/does", Tomcat has no application to "assign" the request to, so it MUST generate a generic error message.
If you want to be able to handle all possible 404 responses with a nice, application-branded "not found" page, you'll need to roll a ROOT web application which has just some basic configuration for things like errors, and the pages which will be returned when you get those errors.
- -chris
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This email has been scanned for viruses and malware, and may have been automatically archived by Mimecast Ltd, an innovator in Software as a Service (SaaS) for business. Providing a safer and more useful place for your human generated data. Specializing in; Security, archiving and compliance. To find out more visit the Mimecast website.
Re: [OT] Removing Tomcat ROOT directory causes the server to hang on
startup
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Don,
On 4/21/20 09:20, Clough, Don wrote:
> Is it possible to remove the tomcat ROOT directory? We have
> several applications running on a tomcat instance. I was asked to
> clean the webapps directory up and remove any unused folders.
This is a good idea. But it's also a good idea to have a ROOT web
application. It just doesn't have to be (and shouldn't be!) the
default Tomcat root web application.
Why?
Well, if you navigate to /doesnotexist.html or /does/not/exist.html,
unless your application is ROOT or happens to be mounted on "/does",
Tomcat has no application to "assign" the request to, so it MUST
generate a generic error message.
If you want to be able to handle all possible 404 responses with a
nice, application-branded "not found" page, you'll need to roll a ROOT
web application which has just some basic configuration for things
like errors, and the pages which will be returned when you get those
errors.
- -chris
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Re: Removing Tomcat ROOT directory causes the server to hang on
startup
Posted by Mark Thomas <ma...@apache.org>.
On 21/04/2020 14:20, Clough, Don wrote:
> Good Morning,
>
> Tomcat version 8.5.15
>
> Is it possible to remove the tomcat ROOT directory? We have several
> applications running on a tomcat instance. I was asked to clean the
> webapps directory up and remove any unused folders. I removed manager
> host-manager docs examples Everything is fine, as I expected. I looked
> at the ROOT folder an there are images, a couple of jsp pages and a
> WEB-INF directory. None of these are used by our applications, so I
> removed the ROOT directory. Now the server hangs on startup and my
> applications don't start. Can the ROOT directory be removed? It appears
> that according to the Apache docs it is optional:
>
> "The ROOT web application presents a very low security risk but it does
> include the version of Tomcat that is being used. The ROOT web
> application should normally be removed from a publicly accessible Tomcat
> instance, not for security reasons, but so that a more appropriate
> default page is shown to users."
>
> I tried leaving just an empty ROOT directory, but it still hangs. Is
> there a configuration that I'm missing somewhere that could be looking
> for the ROOT directory?
Not in Tomcat. Possibly in one of the additional applications that has
been deployed.
Tomcat 8.5.x starts quite happily with the ROOT web application removed.
Mark
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Re: Removing Tomcat ROOT directory causes the server to hang on
startup
Posted by "James H. H. Lampert" <ja...@touchtonecorp.com>.
On 4/21/20 6:20 AM, Clough, Don wrote:
> Is it possible to remove the tomcat ROOT directory? We have several
> applications running on a tomcat instance. I was asked to clean the
> webapps directory up and remove any unused folders.
Of course it is. The ROOT that comes with Tomcat is simply a
demonstration webapp, and can be removed and/or replaced like any other
webapp. Our normal "new installation" procedure, for example, is to
remove everything but manager and host-manager, and plug our own webapp
in as the ROOT context.
--
James H. H. Lampert
Touchtone Corporation
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