Installations_guide_centos.md

Installation of httpd

• yum install httpd -y
• service httpd start
• chkconfig httpd on
• cd /var/www/html/

Terraform installation in Centos

• SSH into your cloud server
• sudo yum install -y zip unzip (if these are not installed)
• wget https://releases.hashicorp.com/terraform/0.9.8/terraform_0.9.8_linux_amd64.zip
• unzip terraform_0.9.8_linux_amd64.zip
• sudo mv terraform /usr/local/bin/
• Confirm terraform binary is accessible: terraform --version

Git installation in Centos

• yum update -y
• yum install git -y
• To confirm: git --version

Maven installation in Centos

• java -version (if java and JDK already exists follow below steps else , refer link mentioned at the end)

• cd /usr/local/src

• wget http://www-us.apache.org/dist/maven/maven-3/3.5.4/binaries/apache-maven-3.5.4-bin.tar.gz

• tar -xf apache-maven-3.5.4-bin.tar.gz

• mv apache-maven-3.5.4/ apache-maven/

• cd /etc/profile.d/

• vim maven.sh

• chmod +x maven.sh

• ls

• source /etc/profile.d/maven.sh

• To confirm: mvn --version

  compiler issue in aws instance refer https://forums.aws.amazon.com/thread.jspa?messageID=455613

  refer link for more details https://www.tecmint.com/install-apache-maven-on-centos-7/

Gradle installation in Centos

• java -version (if java and JDK already exists follow below steps else , refer link mentioned at the end)

• wget https://services.gradle.org/distributions/gradle-3.4.1-bin.zip

• sudo mkdir /opt/gradle

• sudo unzip -d /opt/gradle gradle-3.4.1-bin.zip

• export PATH=$PATH:/opt/gradle/gradle-3.4.1/bin

• To confirm: gradle -v

  refer link for more deatails https://www.vultr.com/docs/how-to-install-gradle-on-centos-7

Jenkins installation in Centos

• wget https://updates.jenkins-ci.org/download/war/2.162/jenkins.war
• java -jar jenkins.war --httpPort=5000

Upgrading Centos java from 1.7 to 1.8 in centos

• sudo yum install java-1.8.0

• sudo yum remove java-1.7.0-openjdk

• to Verify: java -version

  refere link for more details https://serverfault.com/questions/664643/how-can-i-upgrade-to-java-1-8-on-an-amazon-linux-server

Installation of Docker in centos

• yum update -y

• sudo yum remove docker
  docker-client
  docker-client-latest
  docker-common
  docker-latest
  docker-latest-logrotate
  docker-logrotate
  docker-engine

• sudo yum install -y yum-utils
  device-mapper-persistent-data
  lvm2

• sudo yum install docker -y

• service docker start

• service docker status

  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
  

Installation of Nginx in centos

• yum update -y
• yum install nginx
• service nginx start

Tomcat installation in Centos

• yum install -y tomcat7

• which tomcat7

• service tomcat7 start

• cd /usr/share/tomcat7/

• cd webapps/

• netstat -tulnp ( To check ports is listning ports )

  Tomcat8 - sudo yum install tomcat8 tomcat8-webapps chkconfig tomcat8 on

Installation of Ansible in centos

• yum update -y
• sudo pip install ansible

https://medium.com/@khandelwal12nidhi/ansible-setup-on-aws-ec2-instance-d83fac41fcc8

Installation of Jfrog Artifactory

• wget https://bintray.com/jfrog/artifactory/download_file?file_path=jfrog-artifactory-oss-6.11.1.zip
• unzip download_file?file_path=jfrog-artifactory-oss-6.11.1.zip
• you will get artifactory-oss-6.11.1 , goto bin folder inside artifactory-oss-6.11.1 and run sh artifactory.sh
• access through http://hostmachineip:8081/artifactory/