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Tanzu Community Edition (CE) Notes

Tanzu Stack

Useful Links

• Tanzu CE Homepage
• Getting Started w/ Tanzu CE - Video

Prequisites

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AWS Command Line Interface Quick Reference

The AWS Command Line Interface (CLI) is a unified tool to manage your AWS services. With just one tool to download and configure, you can control multiple AWS services from the command line and automate them through scripts.

AWS CLI Credential Order

Order	Prod Use	Option	Description
1	❌	Command Line Options	aws [command] --profile [profile name] - Profile data uses long term credentials stored locally. This is not recommended for production or instances with public access.
2	❌	Environment Variables	You can store values in environment variables: AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, and AWS_SESSION_TOKEN. Recommended for temp use in non-production environments.
3	❌	AWS CLI Credentials File	aws configure - Command creates a credentials

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<#
.Synopsis
   Generate Pixel Per Inches for Monitor size.
.DESCRIPTION
   Generate Pixel Per Inches for Monitor size based on horizontal resolution, vertical resolution, and diagonal monitor size.
.EXAMPLE
   Get-PixelDensity -HorizontalResolution 1920 -VerticalResolution 1080 -MonitorSize 24
#>
function Get-PixelDensity
{

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Make sure the vehicle is cool to the touch and not in direct sunlight 
before beginning. 

1) Verify all products are on hand before beginning. Below are ones
   I recommend, but feel free to swap for your favorites. 

Wheels
- Sonax Max Effect Wheel Cleaner http://amzn.to/2banxeg
- Griots Rubber Cleaner http://amzn.to/2bF0KWk
- Tuf shine tire brush http://amzn.to/2be8U8R

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1. Install CentOS 7 - Minimal
2. yum groupinstall "X Window System"
3. yum install gnome-classic-session gnome-terminal nautilus-open-terminal control-center liberation-mono-fonts
4. unlink /etc/systemd/system/default.target
5. ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target
6. reboot

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1) Download and install Microsoft Visual C++ 2010 Service Pack 1 Redistributable Package
https://www.microsoft.com/en-us/download/details.aspx?id=26999

2) Download and install VirtualBox
https://www.virtualbox.org/

3) Download and install Vagrant
https://www.vagrantup.com/

4) Download and replace curl.exe in C:\HashiCorp\Vagrant\embedded\bin

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# Measure complexity as a function of input size
# - Worst case scenario
# - Largest factor in expression

# Asymptotic Notation - provide a formal way to talk about the relationship between
#                       the running time of an algorithm and the size of inputs.
#
# Asymptotic notation describes the complexity of an algorithm as the size of it's
# inputs approaches infinity

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RAM, random access memory, is the ability to store/read values based on address inputs 
(versus say sequentially). It is also commonly referred to as voltile memory because it 
requires a constant supply of electricity to retain its contents.

The number of values that a RAM array can store is based on the number of address inputs.

With 1 address input we can store 2 values (0 or 1).
2 addresses = 4 values (00, 01, 10, 11)
3 addresses = 8 values (000, 001, 010, 100, 011, 101, 110, 111)
4 addresses = 16 values

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;; Installation on Mac OS X
;; After downloading and installing into applications folder run the following commands from the terminal
;; sudo ln -s /Applications/MIT\:GNU\ Scheme.app/Contents/Resources /usr/local/lib/mit-scheme-x86-64
;; sudo ln -s /usr/local/lib/mit-scheme-x86-64/mit-scheme /usr/bin/scheme
;; To Launch simply type "scheme" in the terminal

;; Using operators on operands (Scheme uses prefix notation)
(+ 4 4) ; Add 4 + 4 = 8

;; Add two numbers that are multiplied

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Cache is a net benefit in perf if time saved in cache hits exceeds time lost in cache overhead. 

L = Regular lookup
H = Cache Hit
M = Cache Miss
R = Cache Hit Ratio (500 lookups/100 served from cache is 20%)

H x R + M x (1 - R) < L