BES User Admin Client Install

Posted by admin on April 15, 2010 under Help | Be the First to Comment

After installing BES USer Admin Tool (BESUserAdminService and BESUSerAdminClient) from Blackberry Resource Kit 5.0, you should run this command to generate BESUserAdminClient password.

Run the following command:
BESUserAdminClient -set_client_auth “-username admin -password adminpasswd -ad_auth -domain admindomain” -set_p clientpasswd

Then run the following command:
BESUserAdminClient -p clientpasswd

Where ‘admin’ is the BESadmin login created at the time of BES installation with password ‘adminPwd’.

You can see if a password has been previously cofiugred by running the following command.

BESUserAdminClient -p clientPwd -status

Design Considerations for VM Security

Posted by admin on March 8, 2010 under Help, Tutorials | Be the First to Comment

Port-Profile capability in Nexus 1000V is the primary mechanism by which network policy is defined and applied to virtual machines. A port-profile can be used to define configuration options as well as security and service level characteristics. Virtual-Service-Domain (VSD), on the other hand, is a feature within the Nexus 1000V that allows for grouping of one or more port-profiles into one logical domain. The VSD capability allows for services that work in conjunction with Nexus 1000V, such as a virtual firewall entity like vShield, to be integrated into the virtual environment and accessed by the individual domains. This seamless service integration in conjunction with the Nexus 1000V can be used to provide more granular security policies within a virtual environment. Read more of this article »

Enterprise applications Toolkit

Posted by admin on March 6, 2010 under Help, Tutorials | Be the First to Comment

Multi-tenant is not virtualisation

I would take issue with the suggestion that multi-tenant applications means “multiple instances of the same package that can be executed on the same machine”; that’s virtualisation, and doesn’t require any particular magic at all. However it is grossly inefficient from an operational viewpoint – it means if I have 1000 customers for my cloud-based Exchange service (e.g.) I have to separately manage 1000 instances of Exchange. Read more of this article »

Hosted Exchange: Can it Work for You?

Posted by admin on under Help | Be the First to Comment

You don’t have the time, money or manpower to run your own messaging environment, it may be time to consider hosted Exchange

I’ve decided to join Gold’s Gym. With the high upfront costs of fitness equipment, I figured this was a cheaper and better solution than trying to go it alone. Gold’s experienced certified personal trainers are helping me design and implement a fitness plan. With their support, I’m reaching my goal. But if the service ever goes south, I can always leave, because I have the pay-as-you-go plan. Read more of this article »

Cloud-hosted collaboration Multi-Tenant or Dedicated?

Posted by admin on under Help, News, Tutorials | Be the First to Comment

We just had another of our regular cloud research meetings at Forrester. In these meetings, we cut across our research organization to examine cloud computing from every angle.
Compared with even just a year ago, it’s amazing how important and pervasive cloud computing analysis (as opposed to cloud computing guesswork) has become in our research calendar.
You can see the existing cloud/SaaS research here and our planned research here. As the meeting host, I mostly listen, probe, and take notes, but ocassionally I get to jump in with a thought. Read more of this article »

Virtual Machine Monitor

Posted by admin on March 3, 2010 under Help | Be the First to Comment

Virtual Machine Monitor

Image:xen_arch_10_a.pngThe virtual machine monitor (VMM) runs between the server hardware and the SUSE Linux operating system kernel. When the computer boots, the VMM loads first and then starts the VM Server in privileged mode, which means that the VM Server has the ability to create and control virtual machines and has direct access to the computer hardware. The VM Server is configured with native device drivers that match the actual devices in the computer. For example, if the computer has a physcial e1000 network card, the VM Server is configured to load and run the SUSE Linux device driver for the e1000.

  • Virtual machine monitor (VMM) and hypervisor refer to the software layer developed and maintained by the Xen open source community that provides VM Server functionality.

Xen Virtual Machine Modes

Posted by admin on under Help | Be the First to Comment

Xen Virtual Machine Modes

Xen Virtual Machine The VM Server hosts virtual machines running operating systems in one of two modes: fully virtual or paravirtual.

  • Fully virtual: Complete emulation of all hardware devices. Although it requires special computer hardware, most operating systems can run in fully virtual mode because the VMM emulates all computer devices to fool the operating system into thinking it has exclusive access to an entire computer. This complete emulation of computer hardware demands more CPU resources from the VM Server. As a result, an operating system running in full virtualization mode runs slower.
  • Paravirtual: Selective emulation of hardware devices. A paravirtualized operating system can run in paravirtual mode, which does not require complete emulation and therefore requires less management overhead. For example, VM-aware operating systems do not require an emulated graphics card, so the VM Server does not need to emulate video data. As a result, an operating system running in paravirtual mode demands fewer CPU resources and has better performance. It also requires no special computer hardware.

Force VM reboot in XenServer

Posted by admin on December 13, 2009 under Help, News | Be the First to Comment

Sometimes a VM might hang and not be repsonsive to XenCenter commands, in which case you can use the command line to force a reboot.

Display list of VMs on Server to get UUID:
xe vm-list

Force reset of VM:
xe vm-reset-powerstate uuid=”UUID-of-the-VM” force=true

Example:
Display list of VMs on Server to get UUID:

[root@asx-xen ~]# xe vm-list
uuid ( RO) : c0e27900-d279-448c-8ec2-xxxxxxxxxxxx
name-label ( RW): Control domain on host: asx-xen
power-state ( RO): running
Force reset of VM:
xe vm-reset-powerstate uuid=uuid-of-the-VM force=true

Draft  Saved at 5:18:00 pm. Last edited by admin on January 29, 2010 at 9:16 pm




Set default image size in Gallery2

Posted by admin on October 13, 2009 under Help | Read the First Comment

If undefined Galler2 will display the first image size available, but in some cases you may want a different size displayed by default. Here is what you do:

Edit this line:

/gallery2/modules/core/classes/GalleryTheme.class

Change this value:

$imageViewsIndex = 0;

For the first value use 0, for the second value use 1, etc…

Setup SSL for ISPCP on Debian

Posted by admin on October 7, 2009 under Help, Tutorials | Be the First to Comment

I followed the tutorial on the ispCP site but it didn’t get me going, so in researching it myself I came up with an easier set of instructions using info from a few articles listed at the end of this article. This works for Debian Etch with ispCP Omega so most of the prerequisites referred to in the articles are already installed.

Install OpenSSL and make self-signed certificate:

apt-get install openssl ssl-cert
make-ssl-cert /usr/share/ssl-cert/ssleay.cnf /etc/ssl/certs/apache.pem
chmod 600 /etc/ssl/certs/apache.pem

Create new SSL ispCP admin site by copying existing one:

cp /etc/apache2/sites-available/00_master.conf /etc/apache2/sites-available/00_master_ssl.conf

Edit new configuration file to use port 443:

vi /etc/apache2/sites-available/00_master_ssl.conf
Change this line:
VirtualHost 38.110.198.150:80
To this:
VirtualHost 38.110.198.150:443

Add following lines to enable SSL for new admin site:

SSLEngine On
SSLCertificateFile /etc/ssl/certs/apache.pem

Enable new site in apache:

a2ensite 00_master_ssl.conf

Enable SSL and make apache listen on port 443:

vi /etc/apache2/ports.conf

Add this line:

Listen 443

Enable apache SSL module:

a2enmod ssl

Update the apache default site template:

vi /etc/apache2/sites-available/default
Change this line:
NameVirtualHost *
To this:
NameVirtualHost *:80
NameVirtualHost *:443

Reload apache:

/etc/init.d/apache2 reload

Taken from:
http://www.isp-control.net/documentation/doku.php?id=howto:security:ssl_made_easy
http://www.debianadmin.com/install-and-configure-apache2-with-php5-and-ssl-support-in-debian-etch.html
http://yekmer.blogspot.com/2008/07/how-to-install-ssl-support-to-apache.html

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