sonarqube installation

SonarQube Installation
SonarQube provides the capability to not only show health of an application but also to highlight issues newly introduced. With a Quality Gate in place, you can fix the leak and therefore improve code quality systematically.

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Prerequisites
EC2 instance with Java installed
MySQL Database Server or MyQL RDS instance. Get help here
Installation
Install MySQL client version

 # yum install mysql
Download stable SonarQube version from below website.

Website: https://www.sonarqube.org/downloads/
Note: This Article written for SonarQube6.0
Download & unzip SonarQube 6.0

# cd /opt
# wget https://sonarsource.bintray.com/Distribution/sonarqube/sonarqube-6.0.zip
# unzip sonarqube-6.0.zip
# mv /opt/sonarqube-6.0 /opt/sonar
Allow RDS instance security group to access SonarQube server

Connect to RDS instance with database credentials

mysql -h <RDS_Instance_endpoint>:3306 -u <DB_USER_NAME> -p <DB_PASSWORD> 
Create a new sonar database

CREATE DATABASE sonar CHARACTER SET utf8 COLLATE utf8_general_ci;
Create a local and a remote user

CREATE USER sonar@localhost IDENTIFIED BY 'sonar';
CREATE USER sonar@'%' IDENTIFIED BY 'sonar';
Grant database access permissions to users

GRANT ALL ON sonar.* TO sonar@localhost;
GRANT ALL ON sonar.* TO sonar@'%';
check users and databases

use mysql
show databases;
SELECT User FROM mysql.user;
FLUSH PRIVILEGES;
QUIT
So for you have configured required database information on RDS. Let’s Jump back to your EC2 instance and enable SonarQube properties file to connect his Database.

ON EC2 Instance
Edit sonar properties file to uncomment and provide required information for below properties.

File Name: /opt/sonar/conf/sonar.properties
sonar.jdbc.username=sonar
sonar.jdbc.password=sonar
sonar.jdbc.url=jdbc:mysql://<RDS_DATABAE_ENDPOINT>:3306/sonar?useUnicode=true&characterEncoding=utf8&rewriteBatchedStatements=true&useConfigs=maxPerformance&useSSL=false
sonar.web.host=0.0.0.0
sonar.web.context=/sonar
Start SonarQube service

# cd /opt/sonar/bin/linux-x86-64/
# ./sonar.sh start
Run SonarQube as a default service
Implement SonarQube server as a service

Copy sonar.sh to etc/init.d/sonar and modify it according to your platform.
# sudo cp /opt/sonar/bin/linux-x86-64/sonar.sh /etc/init.d/sonar
# sudo vi /etc/init.d/sonar
Add below values to your /etc/init.d/sonar file

Insert/modify below values
SONAR_HOME=/opt/sonar
PLATFORM=linux-x86-64

WRAPPER_CMD="${SONAR_HOME}/bin/${PLATFORM}/wrapper"
WRAPPER_CONF="${SONAR_HOME}/conf/wrapper.conf"
PIDDIR="/var/run"
Start SonarQube server

# service sonar start
SonarQube application uses port 9000. access SonarQube from browser

  http://<EC2_PUBLIC_IP>:9000/sonar
Troubleshooting
Check whether you enabled port 9000 in EC2 instance security group
Check whether you enabled EC2 instance IP range in RDS security group
Next Step
 Integrate SonarQube with Jenkins