text stringlengths 0 152 |
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Physical hardware |
Other (really anything |
that’ll run CentOS 7 |
should be fine) |
Other Linux (you don’t |
actually have to run |
CentOS) |
Pros |
Up and running in minutes. Inexpensive to |
operate. Doesn’t require any resources on your |
local system. Accessible from anywhere. Can be |
used in a production environment. Fantastic for |
quick prototyping projects. |
Free to use. No external exposure. Excellent for |
small lab projects. |
Inexpensive to operate. Doesn’t require any |
resources on your local system. Accessible from |
anywhere. Can be used in a production |
environment. Scales to enormous sizes. |
Dedicated platform. Can be shipped and |
installed anywhere. Complete control over all |
aspects of environment, hardware, network, |
and so forth. |
You can use an environment that you’re |
familiar with. |
Cons |
You pay as long as it’s running. The IP address |
is only yours for as long as the system is |
running. Requires some DevOps skills if you |
want to deploy in production. No firewall in |
place by default. |
Requires more horsepower on your system. |
Requires storage space on your local system. |
Not easy to deploy into a production |
environment. |
You pay as long as it’s running. Somewhat |
more skills required to gather all the resources |
you need. |
Risk of component failure. Power consumption. |
Noise. Potential costs for hosting. No inherent |
redundancy. |
You’re on your own. |
You can run the exact environment you want. |
You need to have strong Linux admin skills. |
For the purposes of learning, we recommend one of two simple ways to get going: |
• If you are running Windows as your desktop: Download VirtualBox, then down‐ |
load the CentOS 7 Minimal ISO, and install on your local machine. |
• If you are comfortable working with SSH-based, keyed connections to remote sys‐ |
tems: Create a hosted system (for example, a DigitalOcean CentOS droplet). |
This book was developed and tested using both VirtualBox and DigitalOcean. |
VirtualBox Steps |
Grab a copy of VirtualBox from the platform’s website and install it. |
Download the Minimal ISO from the Centos website. |
Linux Installation |
| |
27 |
Get yourself a copy of PuTTY if you’re using Windows. |
Create a new virtual machine with the following characteristics: |
• Type: Linux |
• Version: Red Hat (64-bit) |
• Memory size: 2048 MB |
• Hard disk: Create a virtual hard disk now |
• File location: Pick a good spot for storing your virtual machine images |
• File size: 16 GB is fine for what we’re doing here, but something larger would be |
needed for production |
Once the basic machine has been defined, you’ll need to tweak it as follows: |
• Storage: Under Storage, Controller: IDE ... |
1. You should see the CD/DVD has a tiny disc icon labeled Empty. |
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