Mailing List Archive

Well your response is not what I had in mind, but useful for something
else.. Unless I am just off base.
But I want all of my site backhanded on all the servers except
/notbackhandedcontent/
so if i hit www1.com/notbackhandedcontent/ it will run off that machine...


On Thu, 25 Jan 2001, Theo E. Schlossnagle wrote:

|Not so dumb question at all... Someone asked for a "turn me off" feature and I
|had it in my research branch for a while, but somehow it never made it into
|the production branch.
|
|If you want to be able to use:
|Backhand off
|
|then snag mod_backhand-1.1.1pre2 from the download section off
|http://www.backhand.org/mod_backhand/download/mod_backhand.tar.gz
|
|Otherwise you can hack something by useing byHostname and supply a regex that
|doesn't match anything:
|BackhandFromSO libexec/byHostname.so byHostname dontnameamachinethis
|
|Unless you are very eccentric naming your machines, the above line will work.
|
|Alternatively you can write the one line (I used two for clarity) candidacy
|function that does this and use it in a BackhandFromSO directive :-)
|
|This prerelease also includes better error handling, Martin Domig's bySession
|function and some code clean up. The ChangeLog is in the tarball, so read it
|if you care for more details.
|
|Beta testers are appreciated! Aside from the "Backhand off" and "Backhand
|bySession [identifier]", this code should be *more* stable that 1.1.0. I am
|still integrating a few new candidacy functions in before I tag and roll
|1.1.1.
|
|Adam wrote:
|> How do I not backhand a certain subdirectory?
|> Currently I am bacjhanding all of my document root.. But would like to not
|> do a few directories.. ;)
|> I know it's easy .. Just forget the command...
|
|--
|Theo Schlossnagle
|1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
|2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7
|

Not so dumb question at all... Someone asked for a "turn me off" feature and I
had it in my research branch for a while, but somehow it never made it into
the production branch.

If you want to be able to use:
Backhand off

then snag mod_backhand-1.1.1pre2 from the download section off
http://www.backhand.org/mod_backhand/download/mod_backhand.tar.gz

Otherwise you can hack something by useing byHostname and supply a regex that
doesn't match anything:
BackhandFromSO libexec/byHostname.so byHostname dontnameamachinethis

Unless you are very eccentric naming your machines, the above line will work.

Alternatively you can write the one line (I used two for clarity) candidacy
function that does this and use it in a BackhandFromSO directive :-)

This prerelease also includes better error handling, Martin Domig's bySession
function and some code clean up. The ChangeLog is in the tarball, so read it
if you care for more details.

Beta testers are appreciated! Aside from the "Backhand off" and "Backhand
bySession [identifier]", this code should be *more* stable that 1.1.0. I am
still integrating a few new candidacy functions in before I tag and roll
1.1.1.

Adam wrote:
> How do I not backhand a certain subdirectory?
> Currently I am bacjhanding all of my document root.. But would like to not
> do a few directories.. ;)
> I know it's easy .. Just forget the command...

--
Theo Schlossnagle
1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7

I turned backhand off on certain directories by Aliasing (or
mod_rewriting) the directory to a path that was outside my backhanded
docroot... Something like:

Alias /img /usr/local/apache/nobackhand/img
<Directory /usr/local/apache/htdocs>
Backhand byAge
[SNIP]
</Directory>

Now a "GET /img/abc.gif" request will map to
/usr/local/apache/nobackhand/img/abc.gif and get serviced by the local
machine.

You could probably even make nobackhand/img a symlink, if moving your
content outside the docroot would cause problems;

Does that make sense?

-Blake





>
> Well your response is not what I had in mind, but useful for something
> else.. Unless I am just off base.
> But I want all of my site backhanded on all the servers except
> /notbackhandedcontent/
> so if i hit www1.com/notbackhandedcontent/ it will run off that machine...
>
>
> On Thu, 25 Jan 2001, Theo E. Schlossnagle wrote:
>
> |Not so dumb question at all... Someone asked for a "turn me off" feature and I
> |had it in my research branch for a while, but somehow it never made it into
> |the production branch.
> |
> |If you want to be able to use:
> |Backhand off
> |
> |then snag mod_backhand-1.1.1pre2 from the download section off
> |http://www.backhand.org/mod_backhand/download/mod_backhand.tar.gz
> |
> |Otherwise you can hack something by useing byHostname and supply a regex that
> |doesn't match anything:
> |BackhandFromSO libexec/byHostname.so byHostname dontnameamachinethis
> |
> |Unless you are very eccentric naming your machines, the above line will work.
> |
> |Alternatively you can write the one line (I used two for clarity) candidacy
> |function that does this and use it in a BackhandFromSO directive :-)
> |
> |This prerelease also includes better error handling, Martin Domig's bySession
> |function and some code clean up. The ChangeLog is in the tarball, so read it
> |if you care for more details.
> |
> |Beta testers are appreciated! Aside from the "Backhand off" and "Backhand
> |bySession [identifier]", this code should be *more* stable that 1.1.0. I am
> |still integrating a few new candidacy functions in before I tag and roll
> |1.1.1.
> |
> |Adam wrote:
> |> How do I not backhand a certain subdirectory?
> |> Currently I am bacjhanding all of my document root.. But would like to not
> |> do a few directories.. ;)
> |> I know it's easy .. Just forget the command...
> |
> |--
> |Theo Schlossnagle
> |1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
> |2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7
> |
>
>
> _______________________________________________
> backhand-users mailing list
> backhand-users@lists.backhand.org
> http://lists.backhand.org/mailman/listinfo/backhand-users
>

Hmm. Maybe I don't understand what you were saying or I was unclear.

The problem is that if you have:
Backhand byAge
Backhand byLoad

defined under /path/to/htdocs

Then there is no way to have /path/to/htdocs/localonly to *not* be
backhanded... Right?

Well, the best (and most effecient) way is to use Backhand off. But if you do
not have a machine named "noservernamedthis" then you can put the following in
the .htaccess or <Directory> section for /path/to/htdocs/localonly:
BackhandFromSO libexec/byHostname.so byHostname noservernamedthis

This will tell backhand to only direct the content in *that* directory to
machines that contain the name "noservernamedthis." Since you don't have a
server named that, it will end up removing *all* of the candidates and be
forced to handle it locally.

This this is what you were looking for, no?

Adam wrote:
> Well your response is not what I had in mind, but useful for something
> else.. Unless I am just off base.
> But I want all of my site backhanded on all the servers except
> /notbackhandedcontent/
> so if i hit www1.com/notbackhandedcontent/ it will run off that machine...

--
Theo Schlossnagle
1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7

Oh, Ok. same thing then.
I thought there may be an easy way with a <directoy> section in httpd.conf
to no backhand this section...
I'll try your posted method ;)

thanks!


On Thu, 25 Jan 2001, Theo E. Schlossnagle wrote:

|Hmm. Maybe I don't understand what you were saying or I was unclear.
|
|The problem is that if you have:
|Backhand byAge
|Backhand byLoad
|
|defined under /path/to/htdocs
|
|Then there is no way to have /path/to/htdocs/localonly to *not* be
|backhanded... Right?
|
|Well, the best (and most effecient) way is to use Backhand off. But if you do
|not have a machine named "noservernamedthis" then you can put the following in
|the .htaccess or <Directory> section for /path/to/htdocs/localonly:
|BackhandFromSO libexec/byHostname.so byHostname noservernamedthis
|
|This will tell backhand to only direct the content in *that* directory to
|machines that contain the name "noservernamedthis." Since you don't have a
|server named that, it will end up removing *all* of the candidates and be
|forced to handle it locally.
|
|This this is what you were looking for, no?
|
|Adam wrote:
|> Well your response is not what I had in mind, but useful for something
|> else.. Unless I am just off base.
|> But I want all of my site backhanded on all the servers except
|> /notbackhandedcontent/
|> so if i hit www1.com/notbackhandedcontent/ it will run off that machine...
|
|--
|Theo Schlossnagle
|1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
|2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7
|

Hmm. I like this idea too!
thanks


On Thu, 25 Jan 2001, Blake D. Mills IV wrote:

|I turned backhand off on certain directories by Aliasing (or
|mod_rewriting) the directory to a path that was outside my backhanded
|docroot... Something like:
|
| Alias /img /usr/local/apache/nobackhand/img
| <Directory /usr/local/apache/htdocs>
| Backhand byAge
| [SNIP]
| </Directory>
|
|Now a "GET /img/abc.gif" request will map to
|/usr/local/apache/nobackhand/img/abc.gif and get serviced by the local
|machine.
|
|You could probably even make nobackhand/img a symlink, if moving your
|content outside the docroot would cause problems;
|
|Does that make sense?
|
|-Blake
|
|
|
|
|
|>
|> Well your response is not what I had in mind, but useful for something
|> else.. Unless I am just off base.
|> But I want all of my site backhanded on all the servers except
|> /notbackhandedcontent/
|> so if i hit www1.com/notbackhandedcontent/ it will run off that machine...
|>
|>
|> On Thu, 25 Jan 2001, Theo E. Schlossnagle wrote:
|>
|> |Not so dumb question at all... Someone asked for a "turn me off" feature and I
|> |had it in my research branch for a while, but somehow it never made it into
|> |the production branch.
|> |
|> |If you want to be able to use:
|> |Backhand off
|> |
|> |then snag mod_backhand-1.1.1pre2 from the download section off
|> |http://www.backhand.org/mod_backhand/download/mod_backhand.tar.gz
|> |
|> |Otherwise you can hack something by useing byHostname and supply a regex that
|> |doesn't match anything:
|> |BackhandFromSO libexec/byHostname.so byHostname dontnameamachinethis
|> |
|> |Unless you are very eccentric naming your machines, the above line will work.
|> |
|> |Alternatively you can write the one line (I used two for clarity) candidacy
|> |function that does this and use it in a BackhandFromSO directive :-)
|> |
|> |This prerelease also includes better error handling, Martin Domig's bySession
|> |function and some code clean up. The ChangeLog is in the tarball, so read it
|> |if you care for more details.
|> |
|> |Beta testers are appreciated! Aside from the "Backhand off" and "Backhand
|> |bySession [identifier]", this code should be *more* stable that 1.1.0. I am
|> |still integrating a few new candidacy functions in before I tag and roll
|> |1.1.1.
|> |
|> |Adam wrote:
|> |> How do I not backhand a certain subdirectory?
|> |> Currently I am bacjhanding all of my document root.. But would like to not
|> |> do a few directories.. ;)
|> |> I know it's easy .. Just forget the command...
|> |
|> |--
|> |Theo Schlossnagle
|> |1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
|> |2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7
|> |
|>
|>
|> _______________________________________________
|> backhand-users mailing list
|> backhand-users@lists.backhand.org
|> http://lists.backhand.org/mailman/listinfo/backhand-users
|>
|
|
|_______________________________________________
|backhand-users mailing list
|backhand-users@lists.backhand.org
|http://lists.backhand.org/mailman/listinfo/backhand-users
|

Does that make sense? All too much. Leave it to me to overlook the elegant
solutions :-)

Adam wrote:
> Hmm. I like this idea too!
> thanks
>
> On Thu, 25 Jan 2001, Blake D. Mills IV wrote:
>
> |I turned backhand off on certain directories by Aliasing (or
> |mod_rewriting) the directory to a path that was outside my backhanded
> |docroot... Something like:
> |
> | Alias /img /usr/local/apache/nobackhand/img
> | <Directory /usr/local/apache/htdocs>
> | Backhand byAge
> | [SNIP]
> | </Directory>
> |
> |Now a "GET /img/abc.gif" request will map to
> |/usr/local/apache/nobackhand/img/abc.gif and get serviced by the local
> |machine.
> |
> |You could probably even make nobackhand/img a symlink, if moving your
> |content outside the docroot would cause problems;
> |
> |Does that make sense?

--
Theo Schlossnagle
1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7

I wouln't exactly call it elegant... a 'Backhand Off' directive would
make a lot more sense. I'm using backhand as a front end proxy to a
group of heavy mod_perl servers. The example below is a simple
version of my configuration. It allows images to be served directly
from the lightweight backhand apaches. Since images dont need the
power of mod_perl it seems silly to pass the request off to the
heavies.

-Blake


> Does that make sense? All too much. Leave it to me to overlook the elegant
> solutions :-)
>
> Adam wrote:
> > Hmm. I like this idea too!
> > thanks
> >
> > On Thu, 25 Jan 2001, Blake D. Mills IV wrote:
> >
> > |I turned backhand off on certain directories by Aliasing (or
> > |mod_rewriting) the directory to a path that was outside my backhanded
> > |docroot... Something like:
> > |
> > | Alias /img /usr/local/apache/nobackhand/img
> > | <Directory /usr/local/apache/htdocs>
> > | Backhand byAge
> > | [SNIP]
> > | </Directory>
> > |
> > |Now a "GET /img/abc.gif" request will map to
> > |/usr/local/apache/nobackhand/img/abc.gif and get serviced by the local
> > |machine.
> > |
> > |You could probably even make nobackhand/img a symlink, if moving your
> > |content outside the docroot would cause problems;
> > |
> > |Does that make sense?
>
> --
> Theo Schlossnagle
> 1024D/A8EBCF8F/13BD 8C08 6BE2 629A 527E 2DC2 72C2 AD05 A8EB CF8F
> 2047R/33131B65/71 F7 95 64 49 76 5D BA 3D 90 B9 9F BE 27 24 E7
>
> _______________________________________________
> backhand-users mailing list
> backhand-users@lists.backhand.org
> http://lists.backhand.org/mailman/listinfo/backhand-users
>