enable Weekly Email Notification from the Trusted Advisor.

1) Open the AWS Management Console.
2) Go to the Trusted Advisor service.
3) Select Preferences from the sub-navigation.
4) Enable weekly email notifications.

1. Open the AWS SNS Management Console
2. Create and select a SNS topic

3. Click on Actions > Subscribe to Topic

4. Choose HTTPS as the protocol and set the endpint to:
   api.marbot.io

5. Configure your CloudWatch Alarms to send notifications to the SNS topic.

lsblk prints all block devices in a tree-like format.

lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda 202:0 0 8G 0 disk
└─xvda1 202:1 0 8G 0 part /
xvdf 202:80 0 90G 0 disk

If file command on the disk identifier "xvdf" shows simply "data", then there is no file system on the device and you need to create one.

file -s /dev/xvdf
/dev/xvdf: data

List of important Types in Amazon Cloud Formation tool:

IAM (User, Group, Policy, AccessKey, Role)
Athena (NamedQuery)
Route53 (RecordSetGroup)
EC2 (SecurityGroup::Id, KeyPair::KeyName, SpotFleet)
Lambda (Function, Permission)
Events (Rule)
ApiGateway (RestApi, Method, Deployment)
Logs (LogGroup)

create bucket

aws s3 mb s3://johntest123/

rsync all files from a given folder to S3 bucket:

aws s3 sync /home/ec2-user/ s3://johntest123/

Remove bucket

aws s3 rb --force s3://johntest123/

If pip is not installed, then the following command will not work

pip install awscli

We need to install pip from EPEL like this..

yum install epel-release
yum install python-pip

remove quotes from mysql dump file
cat merged.txt | tr -d \'\" > mergedx.txt

Here are some of the important Amazon products to use.

cloudTrail + ES + cloudWatch
SNS
cloudformation
Route53
EC2 + spot + AMI
Redshift + ElasticCache + Spectrum
S3 + Glacier Deep Archive / Athena
RDS + documentDB
DMS
Lambda + API Gateway + dynamoDB + SMS gateway
Cost Explorer
SFTP server

List of important google products those I use frequently.

1) Popular services:
All popular google products are available as API.

search
gmail
calendar (and tasks)
youtube
blogger
docs (including sheets)
drive (including photos)
books

2) Maps services:
This category has several API's to cater to the vast array of requirements related to geo.

maps
directions
distance matrix
elevation
geocoding
geofencing
geolocation
location & context
maps booking
places
roads
streetView
fused location provider
earch engine
transport tracker solutions

3) Domain specific API:
transit API
classroom API
civic Information API

4) Machine Learning:
automl Vision
vision API
tensorflow
colab

5) Mobile:
play store
android
flutter

6) web:
chrome
apigee
kubernetes
go

7) Utilities:
google sign-in
public DNS
public NTP
recaptcha
google fit
google fonts

Before starting docker daemon, add the aws credentials.

vi /etc/init/docker.override

env AWS_ACCESS_KEY_ID=
env AWS_SECRET_ACCESS_KEY=

The cost of Aurora hosting per hour.

db.r3.large $0.290 (0.24 mysql)
db.r3.xlarge $0.580 (0.475 mysql)
db.r3.2xlarge $1.160 (0.945 mysql)
db.r3.4xlarge $2.320 (1.89 mysql)
db.r3.8xlarge $4.640 (3.78 mysql)

Mysql hosting starts with db.t2.micro at only $0.017 per hour.

It is possible to use password to connect to AWS

1) change config file
sudo vi /etc/ssh/sshd_config

PermitRootLogin yes
PasswordAuthentication yes

2) restart
sudo service ssh restart

3) add a password
sudo passwd root

4) ssh without key
ssh root@xxx.com