Doug Strick wrote:
Hello,
I'm currently working on a project where we're migrating from Adobe
Coldfusion 8 to CF 10. Adobe CF10 now uses tomcat as the underlying server
and mod_jk is the standard connector used. On our test environment we have
a single apache httpd instance serving multiple domains with each going to
a different CF instance. We really only want specific workers enabled for
specific virtual hosts like below.
test1.abc.com --> HTTPD test1 VirtualHost --> CF Test1
test2.abc.com --> HTTPD test2 VirtualHost --> CF Test2
test3.abc.com --> HTTPD test3 VirtualHost --> CF Test3
Each CF instance is on a separate host. A developer has managed to get a
config working on their local desktop where CF10 runs under windows and
apache runs under a linux VM. The real dev environment is a lot more
complicated with multiple virtual hosts. CF is the only one where we're
going to use mod_jk (CF 8 used mod_jrun22) so this is the first time using
mod_jk in our environment. Using the below config I keep getting
"JkWorkersFile cannot occur within <VirtualHost> section". Does anyone
have any suggestions as to what I need to do to make this work?
See http://tomcat.apache.org/connectors-doc/reference/apache.html
quote
JkWorkersFile
The name of a worker file for the Tomcat servlet containers.
This directive is only allowed once. It must be put into the global part of the
configuration.
[...]
unquote
And the same for the "JkShmFile" directive.
The "global part of the configuration" refers to the main (or default) Apache httpd
configuration file (apache2.conf or httpd.conf e.g.), *outside* of any <VirtualHost> section.
The "JkWorkersFile" file defines *all* the "workers" (in mod_jk parlance, a "worker" is
usually "one back-end Tomcat instance"). So in your case, you would have 3 workers (Test1,
Test2 and Test3).
Then inside of each <VirtualHost> section, you would use "JkMount" directives, to indicate
*for this VirtualHost* which URI's should be proxied to which of the known workers.
For example,
in <VirtualHost #1>
JkMount /myapp/ Test1
JkMount /myapp/* Test1
in <VirtualHost #2>
JkMount /myapp/ Test2
JkMount /myapp/* Test2
in <VirtualHost #3>
JkMount /myapp/ Test3
JkMount /myapp/* Test3
Also, it does not really make much sense to have both "JkMount" directives directly in
your configuration, *and* a "JkMountFile" directive. Usually, one uses the one or the
other. It is less confusing, because both specify lists of URI's which should be/should
not be proxied to Tomcat.
Another configuration directive which should only be there once, and in the main httpd
configuration section (not in <VirtualHost>) is
> LoadModule jk_module /apps/httpd/modules/mod_jk.so
It is probably ignored when it occurs in a VirtualHost section.
See http://httpd.apache.org/docs/2.2/mod/mod_so.html#loadmodule
There are some other things which I find a bit strange (or unclear or redundant) in the
configuration below, such as the conjunction of :
> DirectoryIndex index.cfm index.html index.html.var
...
> JkMount / cfusion
> JkMount /* cfusion
...
> AddHandler jakarta-servlet .cfm .cfml .cfc .cfr .cfswf
> DirectoryIndex index.cfm
All in all, it looks a bit like an accumulation of miscellaneous overlapping and
contradictory instructions, put together by chance more than by a good understanding of
what each one really achieves and in what order they are evaluated.
For example :
> JkMount / cfusion
> JkMount /* cfusion
These directives will result in Apache httpd, in effect, proxying *all* requests to the
Tomcat worker named "cfusion", leaving none to be handled by Apache httpd itself.
But then, these directives :
> DirectoryIndex index.cfm index.html index.html.var
> AddHandler jakarta-servlet .cfm .cfml .cfc .cfr .cfswf
> DirectoryIndex index.cfm
are totaly redundant, even among themselves.
This is
currently apache 2.2.26 compiled from source and mod_jk 1.2.37 compiled
from source as well.
--------------------VirtualHost Example--------------------------------
<VirtualHost 192.168.253.61:80 <http://192.168.253.61/>>
DocumentRoot /web/app1.dev5.abc.com/scms
ServerName app1.dev5.abc.com
ServerAlias origin-app1.dev5.abc.com
alias /shared-static /web/app1.dev5.abc.com/shared-static
ErrorLog "|/apps/httpd/bin/rotatelogs
/weblogs/app1.dev5.abc-error.%Y%m%d 86400 -480"
CustomLog "|/apps/httpd/bin/rotatelogs
/weblogs/app1.dev5.abc-access.%Y%m%d 86400 -480" combined env=!keepaliveuri
DirectoryIndex index.cfm index.html index.html.var
#AddDefaultCharset UTF-8
LoadModule jk_module /apps/httpd/modules/mod_jk.so
<IfModule mod_jk.c>
JkMount / cfusion
JkMount /* cfusion
# Where to find workers.properties
JkWorkersFile /apps/httpd/conf.d/modjk/app1.dev5.workers.properties
JkMountFile
/apps/httpd/conf.d/modjk/app1.dev5.uriworkermap.properties
# Where to put jk logs
JkLogFile /weblogs/mod_jk.app1.dev5.log
# custom environment variables
JkEnvVar REDIRECT_URL
JkEnvVar REDIRECT_REMOTE_HOST
JkEnvVar REDIRECT_PATH
JkEnvVar REDIRECT_QUERY_STRING
JkEnvVar REDIRECT_HTTP_ACCEPT
JkEnvVar REDIRECT_HTTP_USER_AGENT
JkEnvVar REDIRECT_REMOTE_ADDR
JkEnvVar REDIRECT_SERVER_NAME
JkEnvVar REDIRECT_SERVER_PORT
JkEnvVar REDIRECT_SERVER_SOFTWARE
# Where to put jk shared memory
JkShmFile /weblogs/app1.dev5.jk_shm
# Set the jk log level [debug/error/info]
JkLogLevel info
# Select the timestamp log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
JkOptions +ForwardDirectories
AddHandler jakarta-servlet .cfm .cfml .cfc .cfr .cfswf
DirectoryIndex index.cfm
<Files ~ ".hbmxml$">
Order allow,deny
Deny from all
</Files>
</IfModule>
</VirtualHost>
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