okram999

Some questions on EFS. (Mostly checking concurrent mounting from multiple nodes)
Some on ElasticCache 
A lot from S3 and Cloudfront
Good understanding of the Autoscaling 
Network security or routing based on security grps
Kenesis (Streams and Firehouse) capacity questions
SQS
VPC Endpoints
Some questions on solution RDS MultiAZ - to check if we know RDS MultiAZ supports mutli region or not
Dynamo db - with very low latency and multi region read and writes

okram999

1.	Disable 80 listener on ALB Web Listeners (FE UI, BE API, Micro) or confirm they result in 443 redirections
> Done

2.	Confirm Port 8080 on the ALB target groups are configured for SSL only
> Primitive approach. Refer this: https://aws.amazon.com/blogs/aws/elastic-load-balancer-support-for-ssl-termination/

3.	Confirm that SSL is enabled for the PGSQL listeners on TCP 5432 for AVA Backend and AVA Central Station db’s
> Require changes in the app as well. https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_PostgreSQL.html#PostgreSQL.Concepts.General.SSL

4.	Limit BackEnd service access to FrontEndWeb UI servers

okram999

  502  serverless
  503  serverless -version
  504  serverless config credentials --provider aws --key XXXXXXX --secret XXXXX --profile serverlessAdmin
  ### AWS profile for sls cli
  You must specify the aws profile | region | timeout | memorySize in the serverless.yml
  
  provider:
  name: aws
  runtime: python3.6
  profile: serverlessAdmin

okram999

```
Index is like a database
Index can be splited into shared shared accross multiple nodes (it can have replicas)
A node can have more than 1 shards
Each shards is an instance of lucene - and they hence scales horizontally
Schema of the documents are defined by -- "the Type"

Inverted indices - quickly maps the search

okram999

Route53
DynamoDB
Kinesis
EMR

ElasticCache
      Memcached
    - Not persistent
    - Cannot be used as a data store
    - Supports large nodes with multiple cores or threads

okram999

Create VPC's

  10.200.0.0/16
    - 10.200.1.0/24 - public
    - 10.200.2.0/24 - private
  10.25.0.0/16
    - 10.25.0.0/24 - private
 
 Create Subnets
     - 10.200.1.0/24 - public

okram999

Follow this https://docs.aws.amazon.com/AmazonECS/latest/developerguide/ecs_cwet2.html
 And create the rule and the target. 
 Note: The document doesnt match the latest AWS web console

okram999

Kafka:

Topics/Partitions/Offsets: 
* Think of it as a database, which have streams of data
* Can have many topics, identified by names
* Topics are splitted into partitions
 -- partitions are ordered
 -- each msg within each partition gets an incremental id called OFFSETS
 
 -- Order of a msg is only garantueed within a partition. NOT accross partitions

okram999

NOkram@TX590-4RYTQN2 MINGW64 ~/Documents/iTrack/s3Test
$ aws s3 mb s3://itrack-okram --profile okram
make_bucket: itrack-okram



NOkram@TX590-4RYTQN2 MINGW64 ~/Documents/iTrack/s3Test
$ aws s3 cp s3://itrack-okram/3/ download/ --recursive --profile okram
download: s3://itrack-okram/3/Config/web-dev.config to download\Config\web-dev.c                                                                                                                onfig
download: s3://itrack-okram/3/iTack.zip to download\iTack.zip

okram999

/**********************************************
*** GENERAL
**********************************************/

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    
}