Second-brain

Re-architectured AWS

3 min read

Services :

Elastic Beenstalk ⇒ Instead of EC2, autoscalling instance to run tomcat frontend ELB in beenstalk ⇒ instead of ELB RDS ⇒ for Database Active MQ ⇒ instead of Rabbit MQ Elastic cache ⇒ instead of Memcached Route 53 Cloudfront ⇒ Content delivery network

Architecture diagram :

Steps :

Security groups :

First we have the backend SG for all backend services ie RDS, Active MQ, elastic cache etc. set thier inbound rules to All traffic from that own SG

RDS :

To change the configuration of a RDS first create a parameter group with desired configurations and then make.a RDS with that parameter group selected

After creating parameter group create DB subnet group selecting your VPC

now create a RDS with everything (we used SQL 8.0.39)

Elasti cache :

Create a Parameter group first (We used memecached 1.6) Also create a Subnet Group Now create a Elasti-cache

Amazon MQ :

Create a Single intance MQ with rabbitMQ selected Give appropriate username and password (needs to be updated in .properties) Give correct Security Group Deployment time takes very long

Initializing RDS DB :

Create a EC2 instance in the same VPC to ssh into the DB for that : First download essentials :

sudo apt install mysql-client git -y

Also make sure the SG of this instance is allowed to access SG of SQL

Now clone the source code :

git clone https://hkhcoder/vprofile-project.git
cd vrprofile-project
git checkout awsrefactor //To change branch
ls src/main/resources/    // There must be a db_backup.sql file present

After that get Endpoint, Username and password of your DB

mysql -h (Endpoint) -u (username) -p(password) accounts     //To to accounts section

Now initialize the DB with :

mysql -h main-db-sql.cjw00e0siue5.us-east-2.rds.amazonaws.com -u admin -p2BKJPjwjLiEA4msPWi1a accounts < src/main/resources/db_backup.sql

log back in DB and do show tables; you must see all tables created

Now you can delete the instance

Elastic Beenstalk :

First create a IAM role with these specific 4 policies : AWSElasticBeanstalk - AdministratorAccess, CustomPlatformEC2…, RoleSNS, Webtier After creating this role go and create ElasticBeanStalk with IAM role, Security pair, but for now leave SG blank with all those headache settings The best part about beanstalk is its rollling requirements for auto-scalling (learn)

After doing that you will have 2 instances and 1 auto-scalling groups created and running

Also get the new instances SG and add it to the backend SG allowing all traffic

Building artifact :

First get all Endpoints of RDS, Amazon MQ, ElastiCache get usernames and password of RDS and Amazon MQ Now clone source code in your laptop and switch the Branch Now Change the src/main/resources/apllication.properties file with your all these details

DB01 ⇒ Endpoint of RDS RMQ ⇒ Endpoint of MQ MC ⇒ Endpoint of elasti-cache

and thier respective usernames and passwords

after that do mvn install and build the artifact after the artifact (.war) has been build simply upload it in the Beanstalk Environment and deploy

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