automating the installations

jenkins-maven-ansible-setup.sh

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+#!/bin/bash
+# Hardware requirements: AWS Linux 2 with mimum t2.medium type instance & port 8080 should be allowed on the security groups
+# Installing Jenkins
+sudo yum update –y
+sudo wget -O /etc/yum.repos.d/jenkins.repo https://pkg.jenkins.io/redhat-stable/jenkins.repo
+sudo rpm --import https://pkg.jenkins.io/redhat-stable/jenkins.io.key
+sudo yum upgrade
+sudo amazon-linux-extras install java-openjdk11 -y
+sudo yum install jenkins -y
+sudo systemctl enable jenkins
+sudo systemctl start jenkins
+
+# Installing Git
+sudo yum install git -y
+
+# Installing maven
+sudo wget https://repos.fedorapeople.org/repos/dchen/apache-maven/epel-apache-maven.repo -O /etc/yum.repos.d/epel-apache-maven.repo
+sudo sed -i s/\$releasever/6/g /etc/yum.repos.d/epel-apache-maven.repo
+sudo yum install -y apache-maven
+
+# Installing Ansible
+sudo amazon-linux-extras install ansible2 -y
+sudo useradd ansadmin
+sudo echo ansadmin:ansadmin | chpasswd
+sudo sed -i "s/.*#host_key_checking = False/host_key_checking = False/g" /etc/ansible/ansible.cfg

nexus-setup.sh

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+#!/bin/bash
+# Hardware requirements: AWS Linux 2 with mimum t2.medium type instance & port 8081 should be allowed on the security groups
+yum install java-1.8.0-openjdk.x86_64 wget -y   
+mkdir -p /opt/nexus/   
+mkdir -p /tmp/nexus/                           
+cd /tmp/nexus/
+NEXUSURL="https://download.sonatype.com/nexus/3/latest-unix.tar.gz"
+wget $NEXUSURL -O nexus.tar.gz
+EXTOUT=`tar xzvf nexus.tar.gz`
+NEXUSDIR=`echo $EXTOUT | cut -d '/' -f1`
+rm -rf /tmp/nexus/nexus.tar.gz
+rsync -avzh /tmp/nexus/ /opt/nexus/
+useradd nexus
+chown -R nexus.nexus /opt/nexus 
+cat <<EOT>> /etc/systemd/system/nexus.service
+[Unit]                                                                          
+Description=nexus service                                                       
+After=network.target                                                            
+                                                                  
+[Service]                                                                       
+Type=forking                                                                    
+LimitNOFILE=65536                                                               
+ExecStart=/opt/nexus/$NEXUSDIR/bin/nexus start                                  
+ExecStop=/opt/nexus/$NEXUSDIR/bin/nexus stop                                    
+User=nexus                                                                      
+Restart=on-abort                                                                
+                                                                  
+[Install]                                                                       
+WantedBy=multi-user.target                                                      
+
+EOT
+
+echo 'run_as_user="nexus"' > /opt/nexus/$NEXUSDIR/bin/nexus.rc
+systemctl daemon-reload
+systemctl start nexus
+systemctl enable nexus

sonarqube-setup.sh

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+#!/bin/bash
+# Hardware requirements: Ubuntu 20.04 instance with mimum t2.medium type instance & port 9000 should be allowed on the security groups
+cp /etc/sysctl.conf /root/sysctl.conf_backup
+cat <<EOT> /etc/sysctl.conf
+vm.max_map_count=262144
+fs.file-max=65536
+ulimit -n 65536
+ulimit -u 4096
+EOT
+cp /etc/security/limits.conf /root/sec_limit.conf_backup
+cat <<EOT> /etc/security/limits.conf
+sonarqube   -   nofile   65536
+sonarqube   -   nproc    409
+EOT
+
+sudo apt-get update -y
+sudo apt-get install openjdk-11-jdk -y
+sudo update-alternatives --config java
+
+java -version
+
+sudo apt update
+wget -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O - | sudo apt-key add -
+
+sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
+sudo apt install postgresql postgresql-contrib -y
+#sudo -u postgres psql -c "SELECT version();"
+sudo systemctl enable postgresql.service
+sudo systemctl start  postgresql.service
+sudo echo "postgres:admin123" | chpasswd
+runuser -l postgres -c "createuser sonar"
+sudo -i -u postgres psql -c "ALTER USER sonar WITH ENCRYPTED PASSWORD 'admin123';"
+sudo -i -u postgres psql -c "CREATE DATABASE sonarqube OWNER sonar;"
+sudo -i -u postgres psql -c "GRANT ALL PRIVILEGES ON DATABASE sonarqube to sonar;"
+systemctl restart  postgresql
+#systemctl status -l   postgresql
+netstat -tulpena | grep postgres
+sudo mkdir -p /sonarqube/
+cd /sonarqube/
+sudo curl -O https://binaries.sonarsource.com/Distribution/sonarqube/sonarqube-8.3.0.34182.zip
+sudo apt-get install zip -y
+sudo unzip -o sonarqube-8.3.0.34182.zip -d /opt/
+sudo mv /opt/sonarqube-8.3.0.34182/ /opt/sonarqube
+sudo groupadd sonar
+sudo useradd -c "SonarQube - User" -d /opt/sonarqube/ -g sonar sonar
+sudo chown sonar:sonar /opt/sonarqube/ -R
+cp /opt/sonarqube/conf/sonar.properties /root/sonar.properties_backup
+cat <<EOT> /opt/sonarqube/conf/sonar.properties
+sonar.jdbc.username=sonar
+sonar.jdbc.password=admin123
+sonar.jdbc.url=jdbc:postgresql://localhost/sonarqube
+sonar.web.host=0.0.0.0
+sonar.web.port=9000
+sonar.web.javaAdditionalOpts=-server
+sonar.search.javaOpts=-Xmx512m -Xms512m -XX:+HeapDumpOnOutOfMemoryError
+sonar.log.level=INFO
+sonar.path.logs=logs
+EOT
+
+cat <<EOT> /etc/systemd/system/sonarqube.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
+
+LimitNOFILE=65536
+LimitNPROC=4096
+
+
+[Install]
+WantedBy=multi-user.target
+EOT
+
+systemctl daemon-reload
+systemctl enable sonarqube.service
+#systemctl start sonarqube.service
+#systemctl status -l sonarqube.service
+apt-get install nginx -y
+rm -rf /etc/nginx/sites-enabled/default
+rm -rf /etc/nginx/sites-available/default
+cat <<EOT> /etc/nginx/sites-available/sonarqube
+server{
+    listen      80;
+    server_name sonarqube.groophy.in;
+
+    access_log  /var/log/nginx/sonar.access.log;
+    error_log   /var/log/nginx/sonar.error.log;
+
+    proxy_buffers 16 64k;
+    proxy_buffer_size 128k;
+
+    location / {
+        proxy_pass  http://127.0.0.1:9000;
+        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
+        proxy_redirect off;
+              
+        proxy_set_header    Host            \$host;
+        proxy_set_header    X-Real-IP       \$remote_addr;
+        proxy_set_header    X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_set_header    X-Forwarded-Proto http;
+    }
+}
+EOT
+ln -s /etc/nginx/sites-available/sonarqube /etc/nginx/sites-enabled/sonarqube
+systemctl enable nginx.service
+#systemctl restart nginx.service
+sudo ufw allow 80,9000,9001/tcp
+
+echo "System reboot in 30 sec"
+sleep 30
+reboot