Retriever Consulting Blog

Containers Virtualization and Benefits to Government Users

Christian Carlson - Tuesday, July 15, 2014

Containers are being hailed as the next great thing for more efficient virtualization of computing resources, including the ability to treat infrastructure as code. Docker is the leading edge of the containerization movement, promising reusability and speed improvements an order of magnitude better than traditional environments. This morning I spoke with Federal News Radio Tech Talk host John Gilroy about containerization, virtualization, and the benefits to government users (Federal News Radio 1500 AM Tech Talk Containers Virtualization and the Benefits to Government Users).  

What makes containers so valuable is the ability to partition the resources managed by a single operating system into isolated groups to better balance the conflicting demands on resource usage. Containers can run instructions native to the core CPU without any special interpretation mechanisms. By providing a way to create and enter containers, an operating system gives applications the illusions of running on a separate machine while at the same time sharing many of the underlying resources. The savings realized by sharing these resources, while also providing isolation, mean that containers have significantly lower overhead than true virtualization.

Containers are not new to computing, as the virtual machine was developed by IBM and first introduced into its operating systems in the early 1970s. IBM added logical partitions to its mid-series computers nearly 15 years ago while the “jail” utility and system call were introduced to FreeBSD operating system at the same time. Solaris containers (now Zones) have been around for 10 years and the basis for Linux-based containerization, control groups (cgroups) was added to the kernel in 2007. Linux based containers have since evolved in several formats.

One of the most extensively used Linux container formats is Linux Containers, LXC (https://linuxcontainers.org/). LXC is a userspace interface for the Linux kernel containment features and runs on an unmodified Linux kernel. LXC supports binding in other programing languages like Python, Lua, Ruby, and Go. It contains a library, language bindings, management tools, and container templates. There are features that can be used for hardening LXC containers to enable further security features.

How do you start to use a container? You can build your own with one of the Linux container formats such as LXC. You can also try one of the most disruptive environments to emerge in the last several years, that of Docker (http://www.docker.com/). Docker is an open-source project that automates the creation and deployment of containers. Docker combines a lightweight container virtualization platform with workflows and tooling to help manage and deploy applications. Docker includes automated builds, versioning support, a fully featured REST API, a command line interface, and image repositories. The public docker repository has hundreds of images with many different environmental configurations.

Docker is getting a lot of backing from Red Hat, Google, HP, IBM Microsoft and Rackspace as they battle for the enterprise hosting customers. Docker can be deployed on a variety of platforms including Mac OS X, RHEL, Google Cloud Platform, Amazon EC2, IBM Softlayer, and Microsoft Windows. As an open source platform, Docker brings many capabilities to the user, but it is still only one piece of the puzzle and must be orchestrated through the development lifecycle.

Fortunately, many players are including support for Docker in the management plane, including Amazon Web Services, OpenStack, and Red Hat OpenShift. In AWS, for example, Docker can be installed directly on EC2, can be automatically deployed as a web-based application via AWS Elastic Beanstalk, or can be automatically deployed as a complex application stack via AWS OpsWorks. AWS CloudFormation provides the ability to create a template for programmatically deploying your application stack.

Use of this "management plane" is at the core of DevOps, an emerging cloud computing discipline that seeks o break down the barriers between development and operations. In this manner, it is possible to automate the entire life cycle of this process. And this will provide significant benefits to the government user and manager. 

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Revealed: Secret to Reducing Air Conditioning Costs


Certain results indicate how each American household pay an estimate of $1000 for
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hot summer days in any way. The true secret to reducing Air Conditioning costs lies
in your maintenance activities and making the right purchase of air conditioner units based on your needs.



Currently, there are 3 common kinds of air conditioners, central, freestanding and window on the US market.
Each kind has its own pros and cons. Before purchasing any air conditioners for your home, there is something that you need to understand.
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of maintenance. 

Think about the possible utility and maintenance costs
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But the question is whether it is necessary. 

Apart from the high expense of purchasing this system, there are the possible high costs of repair and
maintenance. If you only want cool air in certain rooms
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for the window or freestanding kind. The key difference between the freestanding
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You can move a freestanding air conditioner from one room to another easily enough. 

Buying this type will be a great idea if you intend
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But if your mind is fixed on having a few units in specific rooms, then the window type might be a good option. Since the window type would be up on the
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Apart from being compact and small, the ductless kind is rather easy to install on any wall.
Compared to the one that comes with a duct, it is also more energy saving.
A good way to cool the temperature in the other rooms that have no air-conditioners is to use oscillating fans.
Another smart way is to purchase a few 5 ton air conditioners to cover the
space for your entire house instead of buying a centralized unit. 

But this depends on how large your home is. Apart from the cost of purchase, there is the expense for maintenance.

Normally, the cost of maintenance of a centralized
air conditioning system is much higher compared to the freestanding or window types.
To reduce maintenance costs, think about performing simple maintenance activities
on your own.

For example, you can take a look at the filter and change it
if it requires changing. Normally, the frequency for changing or checking the filter will be mentioned in the air conditioner manufacturer’s manual.
Some findings show that changing the filters can help in reducing monthly utility costs by
10 to 20%. 

Though it is fine to carry out a simple maintenance
task such as changing a filter, it is best to leave the more complex maintenance or repair tasks to Air Conditioning Experts.
Now and then, call them up to check on the state of your air conditioner
units and do what is necessary for their optimum
working condition – an ounce of prevention is worth a pound
of cure.
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Revealed: Secret to Reducing Air Conditioning Costs

Certain results indicate how each American household pay an estimate of $1000 for both heating and air conditioning systems every year.
Indeed there are very good ways to cut down on these expenses without sacrificing the benefit of air conditioning during hot summer days
in any way. The true secret to reducing Air Conditioning costs lies in your maintenance activities and making the right purchase of air conditioner
units based on your needs.

Currently, there are 3 common kinds of air conditioners, central,
freestanding and window on the US market. Each kind has its own pros and cons.

Before purchasing any air conditioners for your home, there is something that you need
to understand. Not all the types of units on the market require the
same kind of maintenance. 

Think about the possible utility and maintenance costs when you purchase
your unit. What is the cooling coverage that you truly need?
It may seem easy to install a centralized system for your entire house.
But the question is whether it is necessary. 

Apart from the high expense of purchasing this system, there are the possible high costs of
repair and maintenance. If you only want cool air in certain rooms because they are the hottest in your home
during a hot summer season, then opt for the window or freestanding kind.
The key difference between the freestanding type and the window type is in terms of mobility.

You can move a freestanding air conditioner from one room to
another easily enough. 

Buying this type will be a great idea if you intend to rotate the usage of the unit in different rooms.
But if your mind is fixed on having a few units in specific rooms,
then the window type might be a good option. Since
the window type would be up on the wall, it would not take up space in the room like how the freestanding type would.

When it comes to the window type, you have the choice of selecting one that
comes with or without duct. 

Apart from being compact and small, the ductless kind is rather easy to install on any
wall. Compared to the one that comes with a duct, it
is also more energy saving. A good way to cool the temperature in the other rooms that have no
air-conditioners is to use oscillating fans. Another smart way is to purchase a few 5
ton air conditioners to cover the space for your entire house instead
of buying a centralized unit. 

But this depends on how large your home is. Apart from the
cost of purchase, there is the expense for maintenance.
Normally, the cost of maintenance of a centralized air conditioning system is much higher compared to the
freestanding or window types. To reduce maintenance costs,
think about performing simple maintenance activities on your own.

For example, you can take a look at the filter and change it if it requires changing.
Normally, the frequency for changing or checking the filter will be
mentioned in the air conditioner manufacturer’s manual.
Some findings show that changing the filters can help in reducing monthly utility
costs by 10 to 20%. 

Though it is fine to carry out a simple maintenance task such as changing a filter,
it is best to leave the more complex maintenance or repair tasks
to Air Conditioning Experts. Now and then, call them up to check on the state
of your air conditioner units and do what is necessary for their optimum working condition – an ounce of prevention is
worth a pound of cure.
auto Body shop Las vegas commented on 08-Aug-2014 11:09 AM
Revealed: Secret to Reducing Air Conditioning Costs

Certain results indicate how each American household
pay an estimate of $1000 for both heating and air conditioning systems every year.
Indeed there are very good ways to cut down on these expenses without sacrificing
the benefit of air conditioning during hot summer days in any way.
The true secret to reducing Air Conditioning costs lies in your maintenance activities
and making the right purchase of air conditioner units based on your needs.


Currently, there are 3 common kinds of air conditioners, central, freestanding and window on the US market.
Each kind has its own pros and cons. Before purchasing
any air conditioners for your home, there is something that you need to understand.

Not all the types of units on the market require the same kind of maintenance. 

Think about the possible utility and maintenance costs when you
purchase your unit. What is the cooling coverage that you
truly need? It may seem easy to install a centralized system for your entire house.
But the question is whether it is necessary. 

Apart from the high expense of purchasing this system, there are the
possible high costs of repair and maintenance. If you only want cool
air in certain rooms because they are the hottest in your home during a hot summer season, then opt for the window or
freestanding kind. The key difference between the freestanding
type and the window type is in terms of mobility.
You can move a freestanding air conditioner from one room to another
easily enough. 

Buying this type will be a great idea if you intend to rotate the usage of
the unit in different rooms. But if your mind is fixed on having a
few units in specific rooms, then the window type might be a good option. Since the window type would be up on the wall, it would not take up space in the room
like how the freestanding type would. When it comes to the window
type, you have the choice of selecting one that comes with
or without duct. 

Apart from being compact and small, the ductless kind is rather easy to install on any wall.

Compared to the one that comes with a duct,
it is also more energy saving. A good way to
cool the temperature in the other rooms that have no air-conditioners is to use oscillating fans.
Another smart way is to purchase a few 5 ton air conditioners to cover the space for your entire house instead of buying a centralized unit. 

But this depends on how large your home is. Apart from the
cost of purchase, there is the expense for maintenance. Normally, the cost
of maintenance of a centralized air conditioning system is much higher compared to the freestanding
or window types. To reduce maintenance costs,
think about performing simple maintenance activities on your own.

For example, you can take a look at the filter and change it if it requires changing.
Normally, the frequency for changing or checking the filter will be mentioned
in the air conditioner manufacturer’s manual.
Some findings show that changing the filters can help in reducing monthly utility costs by 10 to 20%. 

Though it is fine to carry out a simple maintenance task such as changing
a filter, it is best to leave the more complex maintenance or repair tasks to Air Conditioning Experts.
Now and then, call them up to check on the state of your air conditioner units and do what is necessary
for their optimum working condition – an ounce of prevention is worth a pound of cure.
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