Openstack deployment options

Openstack wants to be as flexible as possible. It means that each service that is developed under the umbrella of Openstack has to be written in a modular way to accept different backend system depending on user preferences. From a high level point of view it means that a service need to have a well defined internal and external API, and the more specific technical implementation details are left for backend systems.

The Openstack specific public (external) API is one milestone for every project. If the API is not reach, flexible and useful enough it will not empower uses when consuming the service. On the other side, if the internal service level API is badly design it may cause issues for example when integrating with other components, exchanging messages, causing bottlenecks or hinder vertical scalability to expand system capacity.

Below is a list of deployment options for Folsom and Grizzly Openstack release.

• External API
•  XML
•  JSON

• Possible hypervisors for OpenStack Compute
• KVM
• Xen
• Citrix XenServer
• Microsoft HyperV
• VMware ESX
• LXC

• Possible OpenStack Block Storage drivers 
• Coraid
• EMC
• GlusterFS
• Huawei
• LVM
• NetApp
• Nexenta
• NFS
• Ceph RBD
• SAN/HP
• SAN/Solaris
• Scality
• Sheepdog
• SolidFire
• Storwize
• Windows
• Xenapi
• XIV
• Zadara

• Possible OpenStack Network backends 
• Big Switch
• Brocade
• Cisco
• Hyper-V
• Linux Bridge
• MidoNet
• NEC
• Nicira
• Open vSwitch
• PLUMgrid
• Ryu

• OpenStack Identity drivers
• LDAP
• SQL
• PAM
• KVS

Proprietary AMD graphics drivers for Linux

How do I start Catalyst Control Center (CCC) from bash

I created a demo user to test my X server config and ATI graphic driver. I run into a problem that my user didn't have relevant permissions to run commands with sudo. Every time I tried to lunch the Catalyst Control Centre I got a popup windows asking for password to perform administrative task.

Solution

1. The name of the program is displayed in the popup windows: amdcccle
2. If you didn't notice you can find this using these methods

$ dpkg -l | grep ati | egrep -iv 'configuration|application|automatic|compatible|compatibility|static|foomatic|ating|ation|ative' | grep ati
$ dpkg -l | grep amd

$ dpkg -L fglrx-amdcccle | grep bin
/usr/lib/fglrx/bin
/usr/lib/fglrx/bin/amdcccle
/usr/lib/fglrx/bin/amdxdg-su
/usr/lib/fglrx/bin/amdupdaterandrconfig

How do verify that my driver is loaded

More checks can be found in [1]. As a simple check you can run:

$ lsmod | grep fglrx
$ dmesg | grep fglrx

Execpt CCC what command can I used to list, print and change the graphic driver settings

You can use a command 'aticonfig'.  Example output can look like this:

$ aticonfig --lsa --odgc
* 0. 06:00.0 ATI Radeon HD 5700 Series

$ aticonfig --odgt
Default Adapter - ATI Radeon HD 5700 Series
                  Sensor 0: Temperature - 37.00 C

$ aticonfig --odgc
Default Adapter - ATI Radeon HD 5700 Series
                            Core (MHz)    Memory (MHz)
           Current Clocks :    850           1200
             Current Peak :    850           1200
  Configurable Peak Range : [600-960]     [1200-1445]
                 GPU load :    0%

References

1. Unofficial Wiki for the AMD Linux Driver
http://wiki.cchtml.com/index.php/Frequently_Asked_Questions

2. http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx