Category Archives: Uncategorized

Marketing Intelligence

March 1, 2014UncategorizedPF

Marketing Intelligence = bigdata ?…

nginx timeout

September 20, 2013UncategorizedPF

More than the average time?
3minutes?

client_header_timeout  3m;
client_body_timeout 3m;
send_timeout     3m;

Two great posts about OpenStack

September 18, 2013UncategorizedPF

“cover what I had neglected previously: performance considerations. Here, I will focus solely on the compute part of OpenStack”
Making the most of your application performance on OpenStack Cloud
by Piotr Siwczak

Get to know your potential workload
Choose the right proportions for OpenStack compute resources
Choosing the right hypervisor for OpenStack
Hypervisor and guest optimizations
Choosing the right compute node
Choosing the right user data storage
Networking Capacity in OpenStack
Avoid “enterpriseness” and shared resources

It turns out that in OpenStack, “controller node” and “compute node” can have variable meanings given how flexibly OpenStack components are deployed
Understanding your options: Deployment topologies for High Availability (HA) with OpenStack
by Piotr Siwczak

Endpoint node: This node runs load balancing and high availability services that may include load-balancing software and clustering applications. A dedicated load-balancing network appliance can serve as an endpoint node. A cluster should have at least two endpoint nodes configured for redundancy.
Controller node: This node hosts communication services that support operation of the whole cloud, including the queue server, state database, Horizon dashboard, and possibly a monitoring system. This node can optionally host the nova-scheduler service and API servers load balanced by the endpoint node. At least two controller nodes must exist in a cluster to provide redundancy. The controller node and endpoint node can be combined in a single physical server, but it will require changes in configuration of the nova services to move them from ports utilized by the load balancer.
Compute node: This node hosts a hypervisor and virtual instances, and provides compute resources to them. The compute node can also serve as the network controller for instances it hosts, if a multihost network scheme is in use. It can also host non-demanding internal OpenStack services, like scheduler, glance-api, etc.
Volume node: This is used if you want to use the nova-volume service. This node hosts thenova-volume service and also serves as an iSCSI target.

OpenStack Jobs Pay

September 16, 2013UncategorizedPF

OpenStack training courses are now available in more than 10 countries and 25 cities!

Visit the new OpenStack Training Marketplace here: http://awe.sm/iHOkg

Data is KING

September 4, 2013UncategorizedPF

The Washington Post has been reporting on the U.S. intelligence community’s top-secret “black budget” after obtaining it from former intelligence contractor Edward Snowden.

The information has revealed insights about the CIA, the raid that killed Osama bin Laden, and the uneasy relationship between America and Pakistan.

Martin Grandjean has an created an overall visualization of the data, which reveals the funding of the U.S. intelligence agencies.