Create installation.md

installation.md

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+## 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/
+
+
+