How to Install SonarQube on CentOS 7

In this article, We are going to perform, How to Install SonarQube on CentOS 7 or any Cloud Instance like Amazon EC2, Azure VM, Google Compute Engine,etc.

SonarQube is an opensource web based tool to manage code quality and code analysis. It is most widely used in continuous code inspection which performs reviews of code to detect bugs, code smells and vulnerability issues of programming languages.

Prerequisites

  • CentOS 7 with minimum 2GB RAM and 1 CPU.
  • PostgreSQL Version 9.3 or higher
  • SSH access with sudo privileges
  • Firewall Port: 9000

Here, We are installing SonarQube 7.9.1 version and have to install Oracle JAVA/Open JDK, Postgres-SQL as database and Latest browser before installing SonarQube. To know Prerequisite visit sonarqube official page

Note: MySQL Support for SonarQube is depricated.

Before installing, Lets update and upgrade System Packages

$ sudo yum update -y

Install wget and unzip package

$ sudo yum install wget unzip -y

Step 1: Install OpenJDK

Install OpenJDK and JRE 11 using following command,

$ sudo yum install openjdk-11-jdk -y

$ sudo yum install openjdk-11-jre -y

1.1. SET Default JDK

To set default JDK or switch to OpenJDK enter below command,

$ sudo update-alternatives --config java

You will see below choices for the alternative java (providing /usr/bin/java).

Selection    Path                                            Priority   Status

------------------------------------------------------------

  0            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      auto mode

  1            /usr/lib/jvm/java-11-openjdk-amd64/bin/java      1111      manual mode

  2            /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java   1081      manual mode

* 3            /usr/lib/jvm/java-8-oracle/jre/bin/java          1081      manual mode

Type  1 to switch OpenJDK 11.

1.2. Check JAVA Version:

$ java -version

Output:

$ java -version

openjdk version "11.0.4" 2019-07-16

OpenJDK Runtime Environment (build 11.0.4+11-post-Ubuntu-116.04.1)

OpenJDK 64-Bit Server VM (build 11.0.4+11-post-Ubuntu-116.04.1, mixed mode, sharing)

Step 2: Install and Setup PostgreSQL 10 Database For SonarQube

Install the PostgreSQL Repository

$sudo yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-centos10-10-2.noarch.rpm -y

Install the PostgreSQL 10 database Server by using following command,

$ sudo yum install postgresql10-server postgresql10-contrib -y

Initialize the Postgres database.

$ sudo /usr/pgsql-10/bin/postgresql-10-setup initdb

Open the /var/lib/pgsql/data/pg_hba.conf file.

$ sudo vi /var/lib/pgsql/10/data/pg_hba.conf

Once Opened Find the below lines at the bottom of the file and change peer to trust and idnet to md5

# TYPE  DATABASE  USER  ADDRESS   METHOD

# "local" is for Unix domain socket connections only

   local       all                 all                     peer

# IPv4 local connections:

   host       all                 all      127.0.0.1/32   ident

# IPv6 local connections:

  host      all                   all      ::1/128           ident

Once changed, it should look like the as below

# TYPE  DATABASE  USER  ADDRESS   METHOD

# "local" is for Unix domain socket connections only

   local            all            all                              trust

# IPv4 local connections:

   host           all             all     127.0.0.1/32    md5

# IPv6 local connections:

   host         all              all     ::1/128              md5

Start PostgreSQL Database server

$ sudo systemctl start postgresql-10

Enable it to start automatically at System Startup

$ sudo systemctl enable postgresql-10

Change the password for the default PostgreSQL user.

$ sudo passwd postgres

Switch to the postgres user.

su - postgres

Create a new user by typing:

createuser sonar

Switch to the PostgreSQL shell.

psql

Set a password for the newly created user for SonarQube database.

ALTER USER sonar WITH ENCRYPTED password 'sonar';

Create a new database for PostgreSQL database by running:

CREATE DATABASE sonarqube OWNER sonar;

grant all privileges to sonar user on sonarqube Database.

grant all privileges on sonarqube  to sonar;

Exit from the psql shell:

\q

Switch back to the sudo user by running the exit command.

exit

Step 3: Download and Install SonarQube on CentOS

Download sonaqube installer files archieve To download latest version of visit SonarQube download page.

$ cd /tmp
$ sudo wget https://binaries.sonarsource.com/Distribution/sonarqube/sonarqube-7.9.1.zip

Unzip the archeve setup to /opt directory

$ sudo unzip sonarqube-7.9.1.zip -d /opt

Move extracted setup to /opt/sonarqube directory

$ sudo mv /opt/sonarqube-7.9.1 /opt/sonarqube

Step 4: Configure SonarQube

We can’t run Sonarqube as a root user , if you run using root user it stops automatically. We have found solution on this to create saparate group and user to run sonarqube.

4.1. Create Group and User:

Create a group as sonar

$ sudo groupadd sonar

Now add the user with directory access.

$ sudo useradd -c "user to run SonarQube" -d /opt/sonarqube -g sonar sonar 

Give the ownership permission to sonar user and group.

$ sudo chown -R sonar:sonar /opt/sonarqube

Open the SonarQube configuration file using your favorite text editor.

$ sudo nano /opt/sonarqube/conf/sonar.properties

Find the following lines.

#sonar.jdbc.username=
#sonar.jdbc.password=

Uncomment and Type the PostgreSQL Database username and password which we have created in above steps.

sonar.jdbc.username=your_user
sonar.jdbc.password=your_password

Edit the sonar script file and set RUN_AS_USER

$ sudo nano  /opt/sonarqube/bin/linux-x86-64/sonar.sh
$ RUN_AS_USER=sonar

Type CTRL+X to save and close the file.

4.2. Start SonarQube:

Now to start SonarQube we need to do following: Switch to sonar user

$ sudo su sonar

Move to the script directory

$ cd /opt/sonar/bin/linux-x86-64/

Run the script to start SonarQube

./sonar.sh start

We can also add this in service and can run as a service.

4.3. Check SonarQube Running Status:

To check if sonaqube is running enter below command,

./sonar.sh status

4.4. SonarQube Logs:

To check sonarqube logs, navigate to /opt/sonarqube/logs/sonar.log directory

$ tail /opt/sonarqube/logs/sonar.log

Step 5: Configure Systemd service

Create a systemd service file for SonarQube to run as System Startup.

$ sudo nano /etc/systemd/system/sonar.service

Add the below lines,

/etc/systemd/system/sonar.service
[Unit]
Description=SonarQube service
After=syslog.target network.target

[Service]
Type=forking

ExecStart=/opt/sonarqube/bin/linux-x86-64/sonar.sh start
ExecStop=/opt/sonarqube/bin/linux-x86-64/sonar.sh stop

User=sonar
Group=sonar
Restart=always

[Install]
WantedBy=multi-user.target

Save and close the file. Now stop the sonarqube script earlier we started to run using as daemon. Start the Sonarqube daemon by running:

# sudo systemctl start sonar

Enable the SonarQube service to automatically  at boot time System Startup.

# sudo systemctl enable sonar

check if the sonarqube service is running,

# sudo systemctl status sonar

Step 6: Access SonarQube

To access the SonarQube using browser type server IP followed by port 9000.

http://server_IP:9000 OR http://localhost:9000

Login to SonarQube  with default administrator username and password is admin.

Finally, We have successfully performed all steps to install sonarqube setup.

Step 7: Configure Reverse Proxy in Apache to Run Sonarqube over HTTPS

Here, We are going to configure reverse proxy in Apache to Run SonarQube over HTTPS. I am assuming you have already installed apache2 on this server.

7.1 : Enable Mod and Reverse Proxy  Modules

First enable mod and reverse proxy modules in CentOs 7 if not enables as shown below.Open the below path

$ sudo vim /etc/httpd/conf/httpd.conf

Copy below lines in /etc/httpd/conf/httpd.conf  file

LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_http_module modules/mod_proxy_http.so

Sample Output:

mod and reverse proxy modules in centos 7

Test the configuration file syntax with

$ sudo apachectl configtest

If there are no errors you will see the following output:

Output:

Syntax OK

Restart httpd service to take effect

$ sudo systemctl restart httpd

7.2 : Create Virtual Host Configuration

Create a virtual host for a specific website open your editor of choice and create the following basic Virtual Host configuration file in /etc/httpd/conf.d directory , paste the below lines, replace domain name and SSL certificate path accordingly.

For Example, Here i am using sonarqube-test.fosstechnix.com domain .

ProxyRequests Off

ProxyPreserveHost On

  <VirtualHost *:80>

           ServerName sonarqube-test.fosstechnix.com

           ServerAdmin [email protected]

           Redirect / https:// sonarqube-test.fosstechnix.com/

          RewriteEngine On

           RewriteCond %{HTTPS} Off

           RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

           ErrorLog /var/log/httpd/error.log

           CustomLog /var/log/httpd//access.log common

</VirtualHost>

<VirtualHost *:443>

          ServerName sonarqube-test.fosstechnix.com

          ServerAlias  sonarqube-test.fosstechnix.com

          SSLEngine On

          SSLCertificateFile /var/www/ssl/56a17ac0a3ef2345.crt

          SSLCertificateKeyFile /var/www/ssl/*.fosstechnix.key

         ProxyPass / http://sonarqube-test.fosstechnix.com:9000/

         ProxyPassReverse / http://sonarqube-test.fosstechnix.com/

</VirtualHost>

Test the virtual host configuration.

$ sudo apachectl configtest

If there are no errors you will see the following output:

Output:

Syntax OK

To activate a newly created virtual host, restart the Apache service

$ sudo systemctl restart httpd

Verify that everything is working as expected, by opening https:// sonarqube-test.fosstechnix.com/

Conclusion:

In this article, We have performed ,How to Download and Install SonarQube on CentOS 7 with Configure Sonarqube, Creating Systemd Service and Configure reverse proxy in apache to run sonarqube over https.

Related Articles:

How to Install SonarQube on Ubuntu 18.04/16.04 LTS

Shivdas Kanade

I am Shivdas Kanade working as DevOps Engineer. Believe in Sharing Knowledge.

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