Arvind's questions

I am trying to configure Tomcat Manager on 2 domains.

I am accessing the Tomcat Host Manager using the IP address of the server.

Now, once I have added the 2 domains via Host Manager, I am trying to access the Tomcat manager app for each domain(so that I can deploy apps to each domain). However I am getting Http 404 error for both domains' manager apps.

Is there something I am missing here? How do I enable Tomcat Manager so that I can access it using the domain names ie http://domain.com:8080/manager/html

I followed the instructions at http://devstack.org/guides/single-machine.html to install OpenStack.

I first installed Ubuntu on my Windows 7 PC using the officially supported Windows installer for Ubuntu 12.04 LTS. And after that I followed the instructions at above page to install OpenStack.

As per instructions, I should be able to access the dashboard aka Horizon, at http://192.168.1.4/ (thats the IP of the PC on which I installed Ubuntu->OpenStack).

However I am getting a 500 error web page when I open that.

How do I resolve this error? I want to set up a dev environment for OpenStack.

For your ref, the whole error message is given now--

FilterError at /
/usr/bin/env: node: No such file or directory
Request Method: GET
Request URL:    http://192.168.1.4/
Django Version: 1.4.2
Exception Type: FilterError
Exception Value:    
/usr/bin/env: node: No such file or directory
Exception Location: /usr/local/lib/python2.7/dist-packages/compressor/filters/base.py in     input, line 133
Python Executable:  /usr/bin/python
Python Version: 2.7.3
Python Path:    
['/opt/stack/horizon/openstack_dashboard/wsgi/../..',
 '/opt/stack/python-keystoneclient',
 '/opt/stack/python-novaclient',
 '/opt/stack/python-openstackclient',
 '/opt/stack/keystone',
 '/opt/stack/glance',
 '/opt/stack/python-glanceclient/setuptools_git-0.4.2-py2.7.egg',
 '/opt/stack/python-glanceclient',
 '/opt/stack/nova',
 '/opt/stack/horizon',
 '/opt/stack/cinder',
 '/opt/stack/python-cinderclient',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-linux2',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PIL',
 '/usr/lib/python2.7/dist-packages/gst-0.10',
 '/usr/lib/python2.7/dist-packages/gtk-2.0',
 '/usr/lib/pymodules/python2.7',
 '/usr/lib/python2.7/dist-packages/ubuntu-sso-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-client',
 '/usr/lib/python2.7/dist-packages/ubuntuone-control-panel',
 '/usr/lib/python2.7/dist-packages/ubuntuone-couch',
 '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol',
 '/opt/stack/horizon/openstack_dashboard']
Server time:    Sat, 27 Oct 2012 08:43:29 +0000


Error during template rendering

In template /opt/stack/horizon/openstack_dashboard/templates/_stylesheets.html, error at line 3
/usr/bin/env: node: No such file or directory
1   {% load compress %}
2   
3   {% compress css %}
4   <link href='{{ STATIC_URL }}dashboard/less/horizon.less' type='text/less'     media='screen' rel='stylesheet' />
5   {% endcompress %}
6   
7   <link rel="shortcut icon" href="{{ STATIC_URL }}dashboard/img/favicon.ico"/>
8   

Also, the traceback is now given below--

Environment:


Request Method: GET
Request URL: http://192.168.1.4/

Django Version: 1.4.2
Python Version: 2.7.3
Installed Applications:
('openstack_dashboard',
 'django.contrib.contenttypes',
 'django.contrib.auth',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'compressor',
 'horizon',
 'openstack_dashboard.dashboards.project',
 'openstack_dashboard.dashboards.admin',
 'openstack_dashboard.dashboards.settings',
 'openstack_auth')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'horizon.middleware.HorizonMiddleware',
 'django.middleware.doc.XViewMiddleware',
 'django.middleware.locale.LocaleMiddleware')


  Template error:
  In template /opt/stack/horizon/openstack_dashboard/templates/_stylesheets.html, error at     line 3
  /usr/bin/env: node: No such file or directory

 1 : {% load compress %}


 2 : 

3 : {% compress css %}

 4 : <link href='{{ STATIC_URL }}dashboard/less/horizon.less' type='text/less' media='screen' rel='stylesheet' />


 5 : {% endcompress %}


 6 : 


 7 : <link rel="shortcut icon" href="{{ STATIC_URL }}dashboard/img/favicon.ico"/>


 8 : 

Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args,     **callback_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/vary.py" in     inner_func
  36.         response = func(*args, **kwargs)
File "/opt/stack/horizon/openstack_dashboard/wsgi/../../openstack_dashboard/views.py" in splash
  38.     return shortcuts.render(request, 'splash.html', {'form': form})
File "/usr/local/lib/python2.7/dist-packages/django/shortcuts/__init__.py" in render
  44.     return HttpResponse(loader.render_to_string(*args, **kwargs),
File "/usr/local/lib/python2.7/dist-packages/django/template/loader.py" in     render_to_string
  176.         return t.render(context_instance)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  140.             return self._render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  823.                 bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render
  155.         return self.render_template(self.template, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in     render_template
  137.         output = template.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  140.             return self._render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render
  134.         return self.nodelist.render(context)
File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render
  823.                 bit = self.render_node(node, context)
File "/usr/local/lib/python2.7/dist-packages/django/template/debug.py" in render_node
  74.             return node.render(context)
File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render
  147.         return self.render_compressed(context, self.kind, self.mode, forced=forced)
File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render_compressed
  107.             rendered_output = self.render_output(compressor, mode, forced=forced)
File "/usr/local/lib/python2.7/dist-packages/compressor/templatetags/compress.py" in render_output
  119.         return compressor.output(mode, forced=forced)
File "/usr/local/lib/python2.7/dist-packages/compressor/css.py" in output
  51.                     ret.append(subnode.output(*args, **kwargs))
File "/usr/local/lib/python2.7/dist-packages/compressor/css.py" in output
  53.         return super(CssCompressor, self).output(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in output
  230.         content = self.filter_input(forced)
File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in filter_input
  192.         for hunk in self.hunks(forced):
File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in hunks
  167.                 precompiled, value = self.precompile(value, **options)
File "/usr/local/lib/python2.7/dist-packages/compressor/base.py" in precompile
  210.                     command=command, filename=filename).input(**kwargs)
File "/usr/local/lib/python2.7/dist-packages/compressor/filters/base.py" in input
  133.                 raise FilterError(err)

Exception Type: FilterError at /
Exception Value: /usr/bin/env: node: No such file or directory

I downloaded and extracted JBOSS AS 7.1.1. I executed the Standalone.sh script also. However, now when I try to go to

 http:// IP-address:8080 

or

  http:// IP-address:9990/console

I get an error that Google Chrome cannot display the web page.

In the console(Putty) I can see that JBOSS has started successfully. Why am I unable to see the welcome page/admin interface?

UPDATE- Output of command

netstat -tulpen

is given below--

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State           User       Inode      PID/Program name
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      27         428559475  31847/mysqld
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      0          428559730  7714/httpd
tcp        0      0 0.0.0.0:10000               0.0.0.0:*                   LISTEN      0          428554917  31428/perl
tcp        0      0 89.22.97.219:53             0.0.0.0:*                   LISTEN      25         428559819  32162/named
tcp        0      0 89.22.97.215:53             0.0.0.0:*                   LISTEN      25         428559817  32162/named
tcp        0      0 127.0.0.1:53                0.0.0.0:*                   LISTEN      25         428559815  32162/named
tcp        0      0 0.0.0.0:21                  0.0.0.0:*                   LISTEN      99         428559363  31674/proftpd: (acc
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      0          428518498  24097/sshd
tcp        0      0 127.0.0.1:11000             0.0.0.0:*                   LISTEN      0          428566351  6633/lookup-domain-
tcp        0      0 127.0.0.1:5432              0.0.0.0:*                   LISTEN      26         428559680  32048/postmaster
tcp        0      0 127.0.0.1:953               0.0.0.0:*                   LISTEN      25         428559820  32162/named
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      0          428555252  31610/master
tcp        0      0 0.0.0.0:443                 0.0.0.0:*                   LISTEN      0          428559732  7714/httpd
udp        0      0 89.22.97.219:53             0.0.0.0:*                               25         428559818  32162/named
udp        0      0 89.22.97.215:53             0.0.0.0:*                               25         428559816  32162/named
udp        0      0 127.11.107.1:53             0.0.0.0:*                               25         428559814  32162/named
udp        0      0 0.0.0.0:10000               0.0.0.0:*                               0          428554918  31428/perl

I am trying to configure mod_jk so that http://domain.com/ is served by Apache while http://app.domain.com/ is served by Tomcat. Now when I go to app.domain.com, I can see Tomcat message, however I am unable to access Tomcat Manager- is there something wrong with my config in Mod JK or is it something else?

I have successfully created virtual host for app.domain.com in Tomcat Host Manager.

I was also able to create manager for app.domain.com (when I created the virtual host for app.domain.com), later I made the following changes to configure mod_jk--

vi /usr/local/apache/conf/vhosts.conf

To this file I added directives for JKMount to the VirtualHost element corresponding to our app's domain- JkMount /. tomcat JkMount /.jsp tomcat JkMount /servlet/ tomcat

In /usr/local/apache/conf/httpd.conf

add following---

##
#Directives for Mod_JK
##
<IfModule mod_jk.c>
   JkWorkersFile /usr/local/apache/conf/workers.properties
   JkShmFile     /usr/local/apache/mod_jk.shm
   JkLogFile     /usr/local/apache/mod_jk.log
   JkLogLevel    warn
   JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
   JkOptions     +ForwardKeySize +ForwardURIProxy -ForwardDirectories
</IfModule>

I also made changes to workers.properties to add a worker corresponding to the worker 'tomcat' i have defined above.

How do I resolve this? I was able to access Tomcat Manager for app.domain.com before I made the above changes, but I cant figure out what I did wrong/missed?

I am setting up a server where "domain1.com" and "domain2.com" should be served by Apache HTML/PHP server, while "app.domain1.com" and "domain3.com" should be served by Apache Tomcat.

I want to accomplish this using Mod_JK, and I found some useful information regarding config of mod_jk (with the aid of tomcat's workers)... but how do I configure for the specific scenario I have described above, wherein one domain is shared b/w Apache and Tomcat, one domain is served by Apache while a third domain is entirely served by Tomcat?

I am trying to make a squid proxy server accept connections from my ip-

For this I have added the following lines to the config file--

acl mynet src 122.179.44.192
acl use_ip myip 2604:c00:a:1:0:1:9074:9c80

The first line above refers to my PC (from which I want to use the proxy server), and the second is an IPv6 IP address for the proxy server itself.

To enable usage of the 2 ACL's as given above, the following lines have been added by me to the config file--

http_port 80
http_access allow mynet
http_access allow use_ip

But when I try to use the proxy server, it is refusing connections? Am i missing something here? What is wrong/missing in my config?

UPDATE- Output of this command--

netstat -lnp | grep squid

is given below--

tcp        0      0 :::3128                     :::*                        LISTEN      5285/(squid)
udp        0      0 0.0.0.0:35556               0.0.0.0:*                               5285/(squid)
udp        0      0 :::40451                    :::*                                    5285/(squid)

I want to set up a Squid ACL in the following manner--

For example, my Squid Proxy Server has 10 IP addresses- now I have a user 'demouser'. I want that for the very first request sent to 'demouser' this user uses IP address #1, for the second request it uses IP address #2, for the 3rd request of the day it uses IP address #3 and so on till it uses up all IPs. One more level of control I would like is that once the user has used up all available IP addresses once per address, then it does not allow the proxy request to go through.

How do I set up such a configuration on Squid Proxy server ACL?

Even a document or how to would be very helpful. The official wiki talks about one 'weird' case- choosing an IP address based on time of day the request was made to the proxy server. The other cases are all regular use cases which are not even remotely near my requirement as specified above.

I have a VPS set up as a proxy server with Squid Proxy.

Now what I want to do is, set up another proxy server on a different VPS- this VPS will have its own set of possible IPs to function as a proxy.

I want to be able to route to any one of the proxies...

For doings the above, do I need to write a script/library from scratch? Is there any existing library which allows easy configuration of Squid, and allows multi-server Squid setups to function? (I would prefer for the library to be in Java).

Possible Duplicate:
How to prevent squid from caching and just filter?

I want to make squid work purely as a proxy, so that it does not cache anything.

Is such a usage of squid possible? How do I do this?

I am using v3.1 of Squid on Cent OS 6.2- x86 edition.

I am trying to initialise Virtualmin. After installing it via Webmin->Module->new module installation screen.

This is the message that I am getting in Webmin:

The Suexec command on your system is configured to only run scripts under /var/www, but the Virtualmin virtual server home directory is /home. CGI and PHP scripts run as domain owners will not be executed.

How do I correct this error so that Virtualmin can start working?

I have just installed Squid on Centos 6.2 x86 based system.

I am trying to configure it through the Squid module for Webmin.

When I go to that screen I get the following message--

Your Squid cache directory /var/spool/squid has not been initialized.This must be done before Squid can be run.

I have tried running the following 2 commands, the commands along with their output are given below--

[root@server ~]# squid -z
2012/02/10 11:03:37| Creating Swap Directories
[root@server ~]#  /usr/sbin/squid -f /etc/squid/squid.conf -z
2012/02/10 11:11:24| Creating Swap Directories

When I go back to the squid module on webmin, I get the same message (as given below) again--

Your Squid cache directory /var/spool/squid has not been initialized.This must be done before Squid can be run.

How do I initialise squid cache correctly?

I have defined a Virtual Host for example.com in Tomcat Host Manager.

I can access http://example.com:8080/Web_Application. However I want to use http://example.com/webapp.

I also want to access http://example.com/ through Apache for serving PHP+HTML. Only for http://example.com/webapp I want Tomcat to serve the Web Application on Port 8080.

Is it possible to hide the port number as well as map a url to a specific web application? What config changes are required to do this?

I am trying to map a java web application named "Cricket_rank_inspector" to the domain www.CRRI.com/cri

I plan to add the following 2 records to the httpd.conf (under section of VHOST for CRRI.com)

ProxyPass /cri ajp://105.5.131.200:8009/Cricket_Rank_Inspector ProxyPassReverse /wri ajp://105.5.131.200:8009/Cricket_Rank_Inspector

Am I correct in assuming that the above will enable http://www.CRRI.com/cri -> Java Web app.

What will be the exact URL of the web app as per my example? Also, do I need to configure something in Tomcat for assigning this specific domain (CRRI.com) to my web app? Because currently I am using IP address and Port also, when invoking this web application.

Any help and guidance would be appreciated.

Thanks, Arvind.

I went to Main >> Server Configuration >> Basic cPanel & WHM Setup and correctly assigned the IPs to my 2 custom nameservers. After that (on same screen) I created A records also for the nameservers, and finally clicked on "Save Changes".

However when I go to Main >> Networking Setup >> Nameserver IPs, the 2 nameservers are shown, but under IP Address field, the value shown is "No IP".

What do I do to ensure that IPs are correctly assigned to my nameservers?

I tried installing JDK in my CentOS x64 web server, it looks like I have made a hash of things :(...

Now, how do I uninstall JDK 1.6.0_26 in Centos x64 linux?

Regards, Arvind.