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JAVA 11 installation in ubuntu 16.04 sudo add-apt-repository ppa:linuxuprising/java sudo apt update sudo apt-get install oracle-java11-installer sudo apt-get install oracle-java11-set-default ( to set java 11 as default ) java -version ( verify java installation ) for more details - https://tecadmin.net/install-oracle-java-11-on-ubuntu-16-04-xenial/

git installation in ubuntu 16.04 apt-get update apt-get install git git --version ( to verify git version )

Jenkins installation in ubuntu 16.04 wget https://updates.jenkins-ci.org/download/war/2.162/jenkins.war ( installs 2.162 version, if you want any other version to be installed visit https://updates.jenkins-ci.org/download/war/ download particular version ) java -jar jenkins.war ( default runs on 8080 port ) java -jar jenkins.war --httpPort=5000 ( if you want run on any other port use this, in my case its 5000 port ) nohup java -jar jenkins.jar & ( to run jenkins process in background ) Jenkins as a service wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add - echo deb https://pkg.jenkins.io/debian-stable binary/ | sudo tee /etc/apt/sources.list.d/jenkins.list apt-get update apt-get install jenkins systemctl start jenkins systemctl status jenkins

maven installation in ubuntu 16.04 cd /usr/local

wget https://downloads.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz

sudo tar apache-maven-3.6.3-bin.tar.gz

sudo tar xvf apache-maven-3.6.3-bin.tar.gz

ln -s apache-maven-3.6.3 apache-maven

sudo vi /etc/profile.d/apache-maven.sh

please insert below lines to /etc/profile.d/apache-maven.sh

export JAVA_HOME=/usr/lib/jvm/java-11-oracle export M2_HOME=/usr/local/apache-maven export MAVEN_HOME=/usr/local/apache-maven export PATH=${M2_HOME}/bin:${PATH} source /etc/profile.d/apache-maven.sh

mvn -version ( to verify maven version )

For more details https://tecadmin.net/install-apache-maven-on-ubuntu/

easy way to install - sudo apt install maven

Docker installation in ubuntu 16.04 sudo apt-get update sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" sudo apt-key fingerprint 0EBFCD88 sudo apt-get update sudo apt-get install docker-ce docker-ce-cli containerd.io ( to install latest version ) sudo docker run hello-world for more details refer https://docs.docker.com/install/linux/docker-ce/ubuntu/#install-docker-ce-1

If you face below problem which is same as mentione below the you can refer this link

https://stackoverflow.com/questions/25183063/docker-on-rhel-6-cgroup-mounting-failing

Starting cgconfig service: Error: cannot create directory /cgroup/blkio /sbin/cgconfigparser; error loading /etc/cgconfig.conf: Cgroup, operation not allowed Failed to parse /etc/cgconfig.conf [FAILED]

After doing this you need run all the commands with sudo concatenated to it.

- To solve this issue we need to add current user to docker group , to do the same follow the below commands 
  sudo groupadd docker
  sudo usermod -aG docker $USER ( got a error while runing docker commands with the current user)
  sudo usermod -aG docker jenkins (got a error while runing docker commands with jenkins user )
  getent group <groupname> (to check the list of users in particular group)
  sudo passwd jenkins to change password of jenkins user

- even after following the above commands if you face any issue in ruuning commands then run below command
  chmod 777 /var/run/docker.sock

SonarQube Installation in ubuntu 16.04 Use apt-get to install the required packages.

apt-get update apt-get install unzip software-properties-common wget default-jdk Install the PostgreSQL database service.

apt-get install postgresql postgresql-contrib Access the Postgres database service command-line.

su - postgres psql Create a Postgres user named sonarqube,Create a Postgres database named sonarqube. Give the PostgreSQL user named sonarqube permission over the database named sonarqube

CREATE USER sonarqube WITH PASSWORD 'password'; CREATE DATABASE sonarqube OWNER sonarqube; GRANT ALL PRIVILEGES ON DATABASE sonarqube TO sonarqube; \q Download the Sonarqube package and move it to the OPT directory.

mkdir /downloads/sonarqube -p cd /downloads/sonarqube wget https://binaries.sonarsource.com/Distribution/sonarqube/sonarqube-7.9.1.zip unzip sonarqube-7.9.1.zip mv sonarqube-7.9.1 /opt/sonarqube Create a new Linux account named sonarqube, Set the correct file permission on the sonarqube directory.

adduser --system --no-create-home --group --disabled-login sonarqube chown -R sonarqube:sonarqube /opt/sonarqube Edit the sonar.sh configuration file.

vi /opt/sonarqube/bin/linux-x86-64/sonar.sh Configure the following options:

RUN_AS_USER=sonarqube Edit the sonar.properties configuration file.

vi /opt/sonarqube/conf/sonar.properties Configure the following options:

sonar.jdbc.username=sonarqube sonar.jdbc.password=password sonar.jdbc.url=jdbc:postgresql://localhost/sonarqube sonar.web.javaAdditionalOpts=-server sonar.web.host=0.0.0.0 Create a Linux configuration file named 99-sonarqube.conf

vi /etc/security/limits.d/99-sonarqube.conf Here is the content of the 99-sonarqube.conf file.

sonarqube - nofile 65536 sonarqube - nproc 4096 Edit the sysctl.conf configuration file.

vi /etc/sysctl.conf Add the following lines at the end of the sysctl.conf file.

vm.max_map_count=262144 fs.file-max=65536 Reboot your computer to enable the new configuration

reboot Start the Sonarqube service.

/opt/sonarqube/bin/linux-x86-64/sonar.sh start Use the following command to monitor the SonarQube log.

tail -f /opt/sonarqube/logs/sonar.log for more deatils refer - https://techexpert.tips/sonarqube/sonarqube-installation-ubuntu-linux/

JFROG Artifactory installation in ubuntu 16.04 using docker container export JFROG_HOME= /set/some/path

mkdir -p $JFROG_HOME/artifactory/var/etc/

cd $JFROG_HOME/artifactory/var/etc/

touch ./system.yaml

chown -R 1030:1030 $JFROG_HOME/artifactory/var

run below docker command

docker run --name artifactory -v $JFROG_HOME/artifactory/var/:/var/opt/jfrog/artifactory -d -p 8081:8081 -p 8082:8082 docker.bintray.io/jfrog/artifactory-oss:latest

Ansible Installation in ubuntu 16.04 sudo apt-add-repository ppa:ansible/ansible sudo apt-get update sudo apt-get install ansible For more details - https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-ansible-on-ubuntu-16-04

kubernetes installation on ubuntu 16.04 ( kubeadm - single master multi nodes ) Make sure docker installed in master and nodes, make sure master has 2 cpu's

Execute below commands in both master and node

sudo apt-get update && sudo apt-get install -y apt-transport-https curl curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add - cat <<EOF | sudo tee /etc/apt/sources.list.d/kubernetes.list deb https://apt.kubernetes.io/ kubernetes-xenial main EOF sudo apt-get update sudo apt-get install -y kubelet kubeadm kubectl sudo apt-mark hold kubelet kubeadm kubectl for more details https://kubernetes.io/docs/setup/independent/install-kubeadm/

Execute below commands in master

after executing this command you will get node's joining command, copy and paste it somewhere

kubeadm init --pod-network-cidr=10.244.0.0/16 ( if you have forget to do then use kubeadm token create --print-join-command ) export KUBECONFIG=/etc/kubernetes/admin.conf mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config;mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config kubectl apply -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/canal/rbac.yaml kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/2140ac876ef134e0ed5af15c65e414cf26827915/Documentation/kube-flannel.yml Execute join command in node, which may look like as mentioned below

kubeadm join 10.128.0.8:6443 --token q915fe.do2ty6a8ow6qjixt
--discovery-token-ca-cert-hash sha256:acd137106e6b763d1ca6b5a4f7c1b1538c2ee8af81e47f9ea3f385c66cd710b3 Then to verify use below commands

kubectl get nodes kubectl get pods Kubectl get service

Nexus Installation in ubuntu 16.04 apt-get install wget ( install if you dont have wget ) java -version ( make sure java is installed which should be java 8 or higher version ) wget https://download.sonatype.com/nexus/3/latest-unix.tar.gz tar -xvf latest-unix.tar.gz cd nexus-3.22.0-02/ ./nexus start ( starts the nexus artifactory ) ./nexus status ( by this you check the status of nexus artifactory ) To access this use http://ip_Address:8081 ( by deafault which will be running on 8081) intial password will be present in /opt/sonatype-work/nexus3/admin.password

Helm Installation in ubuntu 16.04 curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3

chmod 700 get_helm.sh

./get_helm.sh

helm uninstallation which helm ( to see which folder its installed ) rm -rf /usr/local/bin/helm

Build Instruction mvn clean package and build the instruction . Deploy instruction Deploy target/WebApp.war on Tomcat properly for better experience.