Re: Different load balancers on different ports on same apache http server (Apache Users)

On Mon, Nov 23, 2009 at 8:39 PM, Onur Ağın <onuragin@xxxxxxxxx> wrote:

this should be a simple configuration, yet there are no articles about this....
this is how load balancers should work, either different IPs or different ports for load balanced ips, right?

On Mon, Nov 23, 2009 at 4:12 PM, Onur Ağın <onuragin@xxxxxxxxx> wrote:
Thanks for your reply,

I get an Internal Server error
Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, admin@xxxx and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

In the error log:

[Mon Nov 23 16:10:05 2009] [notice] Child 7528: Exit event signaled. Child process is ending.
[Mon Nov 23 16:10:05 2009] [notice] Apache/2.2.14 (Win32) configured -- resuming normal operations

[Mon Nov 23 16:10:05 2009] [notice] Server built: Sep 28 2009 22:41:08
[Mon Nov 23 16:10:05 2009] [notice] Parent: Created child process 6468
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Child process is running

[Mon Nov 23 16:10:06 2009] [notice] Child 7528: Released the start mutex
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Acquired the start mutex.
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting 64 worker threads.

[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 8005.
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 8003.
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 8001.

[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 8004.
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 8002.
[Mon Nov 23 16:10:06 2009] [notice] Child 6468: Starting thread to listen on port 80.

[Mon Nov 23 16:10:07 2009] [notice] Child 7528: All worker threads have exited.
[Mon Nov 23 16:10:07 2009] [notice] Child 7528: Child process is exiting
[Mon Nov 23 16:10:10 2009] [warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

[Mon Nov 23 16:10:11 2009] [warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

[Mon Nov 23 16:10:11 2009] [warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.
[Mon Nov 23 16:10:11 2009] [warn] proxy: No protocol handler was valid for the URL /. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.

Loaded modules are like this in httpd.conf
#
LoadModule actions_module modules/mod_actions.so
LoadModule alias_module modules/mod_alias.so
LoadModule asis_module modules/mod_asis.so

LoadModule auth_basic_module modules/mod_auth_basic.so
#LoadModule auth_digest_module modules/mod_auth_digest.so
#LoadModule authn_alias_module modules/mod_authn_alias.so
#LoadModule authn_anon_module modules/mod_authn_anon.so

#LoadModule authn_dbd_module modules/mod_authn_dbd.so
#LoadModule authn_dbm_module modules/mod_authn_dbm.so
LoadModule authn_default_module modules/mod_authn_default.so
LoadModule authn_file_module modules/mod_authn_file.so

#LoadModule authnz_ldap_module modules/mod_authnz_ldap.so
#LoadModule authz_dbm_module modules/mod_authz_dbm.so
LoadModule authz_default_module modules/mod_authz_default.so
LoadModule authz_groupfile_module modules/mod_authz_groupfile.so

LoadModule authz_host_module modules/mod_authz_host.so
#LoadModule authz_owner_module modules/mod_authz_owner.so
LoadModule authz_user_module modules/mod_authz_user.so
LoadModule autoindex_module modules/mod_autoindex.so

#LoadModule cache_module modules/mod_cache.so
#LoadModule cern_meta_module modules/mod_cern_meta.so
LoadModule cgi_module modules/mod_cgi.so
#LoadModule charset_lite_module modules/mod_charset_lite.so

#LoadModule dav_module modules/mod_dav.so
#LoadModule dav_fs_module modules/mod_dav_fs.so
#LoadModule dav_lock_module modules/mod_dav_lock.so
#LoadModule dbd_module modules/mod_dbd.so

#LoadModule deflate_module modules/mod_deflate.so
LoadModule dir_module modules/mod_dir.so
#LoadModule disk_cache_module modules/mod_disk_cache.so
#LoadModule dumpio_module modules/mod_dumpio.so

LoadModule env_module modules/mod_env.so
#LoadModule expires_module modules/mod_expires.so
#LoadModule ext_filter_module modules/mod_ext_filter.so
#LoadModule file_cache_module modules/mod_file_cache.so

#LoadModule filter_module modules/mod_filter.so
#LoadModule headers_module modules/mod_headers.so
#LoadModule ident_module modules/mod_ident.so
#LoadModule imagemap_module modules/mod_imagemap.so

LoadModule include_module modules/mod_include.so
#LoadModule info_module modules/mod_info.so
LoadModule isapi_module modules/mod_isapi.so
#LoadModule ldap_module modules/mod_ldap.so

#LoadModule logio_module modules/mod_logio.so
LoadModule log_config_module modules/mod_log_config.so
#LoadModule log_forensic_module modules/mod_log_forensic.so
#LoadModule mem_cache_module modules/mod_mem_cache.so

LoadModule mime_module modules/mod_mime.so
#LoadModule mime_magic_module modules/mod_mime_magic.so
LoadModule negotiation_module modules/mod_negotiation.so
LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_connect_module modules/mod_proxy_connect.so
#LoadModule proxy_ftp_module modules/mod_proxy_ftp.so

LoadModule proxy_http_module modules/mod_proxy_http.so
#LoadModule rewrite_module modules/mod_rewrite.so
LoadModule setenvif_module modules/mod_setenvif.so
#LoadModule speling_module modules/mod_speling.so

#LoadModule ssl_module modules/mod_ssl.so
#LoadModule status_module modules/mod_status.so
#LoadModule substitute_module modules/mod_substitute.so
#LoadModule unique_id_module modules/mod_unique_id.so

#LoadModule userdir_module modules/mod_userdir.so
#LoadModule usertrack_module modules/mod_usertrack.so
#LoadModule version_module modules/mod_version.so
LoadModule vhost_alias_module modules/mod_vhost_alias.so

On Mon, Nov 23, 2009 at 4:04 PM, Mark Watts <m.watts@xxxxxxxxxxxxxxxx> wrote:

On Mon, 2009-11-23 at 15:57 +0200, Onur Ağın wrote:
> Hi,
>
>
> I am trying to define several load balancers each working on different
> ports on same apache http server.
> For example, calling the apache http server on 8001 should load
> balance on servers a and b, while calls made to port 8002 should be
> forwarded to c and d.
> How can I achieve this?
>
>
> Thanks...
>
>
>
>
>
>
> <Proxy http://127.0.0.1:8001/ >
> BalancerMember http://10.x.x.x:5101
> BalancerMember http://10.x.x.x:5102
> </Proxy>
>
>
> ProxyPass ????
>
>
> <Proxy http://127.0.0.1:8002/ >
>
>
> BalancerMember http://10.x.x.x:5103
> BalancerMember http://10.x.x.x:5104
> </Proxy>
>
>
>
>
> ProxyPass ???

I suspect you should be specifying things as follows:

<Proxy balancer://127.0.0.1:8001>

BalancerMember http://10.x.x.x:5101
BalancerMember http://10.x.x.x:5102
</Proxy>

<Proxy balancer://127.0.0.1:8002>

BalancerMember http://10.x.x.x:5103
BalancerMember http://10.x.x.x:5104
</Proxy>

<VirtualHost 0.0.0.0:8001>
ProxyPass / balancer://127.0.0.1:8001/
</VirtualHost>

<VirtualHost 0.0.0.0:8002>
ProxyPass / balancer://127.0.0.1:8002/
</VirtualHost>

Mark.

--
Mark Watts BSc RHCE MBCS
Senior Systems Engineer, Managed Services Manpower
www.QinetiQ.com
QinetiQ - Delivering customer-focused solutions
GPG Key: http://www.linux-corner.info/mwatts.gpg