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Proj-101

README.md

Project 101 setup

This is project defines a manual setup of VMs running separate different services.

Prerequisite

  1. Oracle VM Virtualbox
  2. Vagrant
  3. Vagrant plugins
    • vagrant plugin install vagrant-hostmanager
    • vagrant plugin install vagrant-vbguest
  4. Git bash or equivalent editor

VM Setup

  1. Clone source code.
  2. Cd into the repository.
  3. Switch to the main branch.
  4. cd into vagrant/ Manual_provisioning directory

Note

Bringing up all the vm’s may take a long time based on various factors. If vm setup stops in the middle run “vagrant up” command again.

SYSTEM DESIGN DIAGRAM

Web Design Architecture

Provisioning

Services / Stack

  1. Nginx => Web Service
  2. Tomcat => Application Server
  3. RabbitMQ => Broker/Queuing Agent
  4. Memcache => DB Caching
  5. ElasticSearch => Indexing/Search service
  6. MySQL => SQL Database

Setup should be done in the following order:

  • MySQL (Database SVC)
  • Memcache (DB Caching SVC)
  • RabbitMQ (Broker/Queue SVC)
  • Tomcat (Application SVC)
  • Nginx (Web SVC)

1. MYSQL SETUP

Login to the db vm
$ vagrant ssh db01

Verify Hosts entry, if entries missing update the it with IP and hostnames
# cat /etc/hosts

Update OS with latest patches
# yum update -y

Set Repository
# yum install epel-release -y

Install Maria DB Package
# yum install git mariadb-server -y

Starting & enabling mariadb-server

# systemctl start mariadb
# systemctl enable mariadb

Note

Set db root password, I will be using admin123 as password

Set DB name and users.

# mysql -u root -padmin123

mysql> create database accounts;
mysql> grant all privileges on accounts.* TO 'admin'@'%' identified by 'admin123';
mysql> FLUSH PRIVILEGES;
mysql> exit;

Download Source code & Initialize Database.

#git clone -b main https://github.com/hkhcoder/vprofile-project.git

#cd vprofile-project

#mysql -u root -padmin123 accounts < src/main/resources db_backup.sql

#mysql -u root -padmin123 accounts

mysql> show tables;
mysql> exit;

Restart mariadb-server

# systemctl restart mariadb

Starting the firewall and allowing the mariadb to access from port no. 3306

#systemctl start firewalld

#systemctl enable firewalld

#firewall-cmd --get-active-zones

#firewall-cmd --zone=public --add-port=3306/tcp --permanent

#firewall-cmd --reload

#systemctl restart mariadb

2. MEMCACHE SETUP

Login to the Memcache vm
$ vagrant ssh mc01

Verify Hosts entry, if entries missing update the it with IP and hostnames
# cat /etc/hosts

Update OS with latest patches
# yum update -y

Install, start & enable memcache on port 11211

#sudo dnf install epel-release -y

#sudo dnf install memcached -y

#sudo systemctl start memcached

#sudo systemctl enable memcached

#sudo systemctl status memcached

#sed -i 's/127.0.0.1/0.0.0.0/g' /etc/sysconfig/memcached

#sudo systemctl restart memcached

Starting the firewall and allowing the port 11211 to access memcache

#firewall-cmd --add-port=11211/tcp

#firewall-cmd --runtime-to-permanent

#firewall-cmd --add-port=11111/udp

#firewall-cmd --runtime-to-permanent

#sudo memcached -p 11211 -U 11111 -u memcached -d

3. RABBITMQ SETUP

Login to the RabbitMQ vm
$ vagrant ssh rmq01

Verify Hosts entry, if entries missing update the it with IP and hostnames
# cat /etc/hosts

Update OS with latest patches
# yum update -y

Set EPEL Repository
# yum install epel-release -y

Install Dependencies

#sudo yum install wget -y

#cd /tmp/

#dnf -y install centos-release-rabbitmq-38

#dnf --enablerepo=centos-rabbitmq-38 -y install rabbitmq-server

#systemctl enable --now rabbitmq-server

Setup access to user test and make it admin

# sudo sh -c 'echo "[{rabbit, [{loopback_users, []}]}]." > /etc/rabbitmq/rabbitmq.config'
# sudo rabbitmqctl add_user test test
# sudo rabbitmqctl set_user_tags test administrator# sudo systemctl restart rabbitmq-server

Starting the firewall and allowing the port 5672 to access rabbitmq

# firewall-cmd --add-port=5672/tcp
# firewall-cmd --runtime-to-permanent
# sudo systemctl start rabbitmq-server
# sudo systemctl enable rabbitmq-server
# sudo systemctl status rabbitmq-server

4. TOMCAT SETUP

Login to the tomcat vm
$ vagrant ssh app01

Verify Hosts entry, if entries missing update the it with IP and hostnames
# cat /etc/hosts

Update OS with latest patches
# yum update -y

Set Repository
# yum install epel-release -y

Install Dependencies

# dnf -y install java-11-openjdk java-11-openjdk-devel
# dnf install git maven wget -y

Change dir to /tmp

# cd /tmp/Download & Tomcat Package
# wget https://archive.apache.org/dist/tomcat/tomcat-9/v9.0.75/bin/apache-tomcat-9.0.75.tar.gz
# tar xzvf apache-tomcat-9.0.75.tar.gz

Add tomcat user
# useradd --home-dir /usr/local/tomcat --shell /sbin/nologin tomcat

Copy data to tomcat home dir
# cp -r /tmp/apache-tomcat-9.0.75/* /usr/local/tomcat/

Make tomcat user owner of tomcat home dir
# chown -R tomcat.tomcat /usr/local/tomcat

Setup systemctl command for tomcat

Create tomcat service file
# vi /etc/systemd/system/tomcat.service

Update the file with below content

[Unit]
Description=Tomcat
After=network.target
[Service]
User=tomcat
WorkingDirectory=/usr/local/tomcat
Environment=JRE_HOME=/usr/lib/jvm/jre
Environment=JAVA_HOME=/usr/lib/jvm/jre
Environment=CATALINA_HOME=/usr/local/tomcat
Environment=CATALINE_BASE=/usr/local/tomcat
ExecStart=/usr/local/tomcat/bin/catalina.sh run
ExecStop=/usr/local/tomcat/bin/shutdown.sh
SyslogIdentifier=tomcat-%i
[Install]
WantedBy=multi-user.target

Reload systemd files
# systemctl daemon-reload

Start & Enable service

# systemctl start tomcat
# systemctl enable tomcat

Enabling the firewall and allowing port 8080 to access the tomcat

#systemctl start firewalld

#systemctl enable firewalld

#firewall-cmd --get-active-zones

#firewall-cmd --zone=public --add-port=8080/tcp --permanent

#firewall-cmd --reload

CODE BUILD & DEPLOY (app01)

Download Source code
# git clone -b main https://github.com/hkhcoder/vprofile-project.git

Update configuration

# cd vprofile-project
# vim src/main/resources/application.properties
# Update file with backend server details

Build code

Run below command inside the repository (vprofile-project)
# mvn install

Deploy artifact

# systemctl stop tomcat

# rm -rf /usr/local/tomcat/webapps/ROOT*

# cp target/vprofile-v2.war /usr/local/tomcat/webapps/ROOT.war

# systemctl start tomcat

# chown tomcat.tomcat /usr/local/tomcat/webapps -R

# systemctl restart tomcat

5. NGINX SETUP

Login to the Nginx vm

$ vagrant ssh web01
$ sudo -i

Verify Hosts entry, if entries missing update the it with IP and hostnames
# cat /etc/hosts

Update OS with latest patches

# apt update
# apt upgrade

Install nginx
# apt install nginx -y

Create Nginx conf file
# vi /etc/nginx/sites-available/vproapp

Update with below content

upstream vproapp {
server app01:8080;
}
server {
listen 80;
location / {
proxy_pass http://vproapp;}
}

Remove default nginx conf
# rm -rf /etc/nginx/sites-enabled/default

Create link to activate website
# ln -s /etc/nginx/sites-available/vproapp /etc/nginx/sites-enabled/vproapp

Restart Nginx
# systemctl restart nginx