Creation of jenkins server :
search >> ec2 >> instances region : ohio
ami : CentOS 7 (x86_64) - with Updates HVM instance type : t2.micro
security grup : all traffic
after creation :
https://mobaxterm.mobatek.net/download.html
connect to instance by using ssh .....
-- JENKINS SERVER CREATION :
--https://www.jenkins.io/download/
--select centos ..
sudo -i hostnamectl set-hostname jenkins bash yum update -y yum install wget -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 yum install fontconfig java-11-openjdk yum install jenkins -y
--making jenkins as root priv. :
vi /usr/lib/systemd/system/jenkins.service
$JENKINS_HOME, $JENKINS_LOG, and (if you have already run Jenkins) $JENKINS_WEBROOT. User=root Group=root
systemctl daemon-reload
systemctl status jenkins
systemctl restart jenkins
cat /var/lib/jenkins/secrets/initialAdminPassword
{{ NOTE : if thrs a failure due to java version : alternatives --config java }}
Tomcat server creation :
same instance creation again with same sg and key , reselect that
get inside tomcat instance using ssh
change hostname to tomcat
sudo -i hostnamectl set-hostname tomcat
cd /opt/
-- https://tomcat.apache.org/download-90.cgi
yum update -y
yum install wget -y
wget https://dlcdn.apache.org/tomcat/tomcat-9/v9.0.65/bin/apache-tomcat-9.0.65.tar.gz
tar -xvzf /opt/apache-tomcat-9.0.65.tar.gz
yum install java -y
cd bin/
./startup.sh
-- browse ur tomcat server on chrome
try to click on manager app ..
find / -name context.xml
vi /opt/apache-tomcat-9.0.65/webapps/host-manager/META-INF/context.xml
vi /opt/apache-tomcat-9.0.65/webapps/manager/META-INF/context.xml
<!-- <Valve className="org.apache.catalina.valves.RemoteAddrValve"
allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" /> -->
vi /opt/apache-tomcat-9.0.65/webapps/manager/META-INF/context.xml
10 cd bin/
11 ls
12 ./shutdown.sh
13 ./startup.sh
cd conf >>
---Update users information in the tomcat-users.xml file goto tomcat home directory and Add below users to conf/tomcat-users.xml file
<role rolename="admin-gui,manager-gui,manager-script,manager-jmx,manager-status,admin-gui"/>
<user username="tomcat" password="s3cret" roles="admin-gui,manager-gui,manager-script"/>
NOTE : Add like below :
<!--
The sample user and role entries below are intended for use with the
examples web application. They are wrapped in a comment and thus are ignored
when reading this file. If you wish to configure these users for use with the
examples web application, do not forget to remove the <!.. ..> that surrounds
them. You will also need to set the passwords to something appropriate.
-->
<!--
<role rolename="tomcat"/>
<role rolename="role1"/>
<user username="tomcat" password="<must-be-changed>" roles="tomcat"/>
<user username="both" password="<must-be-changed>" roles="tomcat,role1"/>
<user username="role1" password="<must-be-changed>" roles="role1"/>
-->
<role rolename="admin-gui,manager-gui,manager-script,manager-jmx,manager-status,admin-gui"/>
<user username="raman" password="raman" roles="admin-gui,manager-gui,manager-script"/>
</tomcat-users>
----Restart serivce and try to login to tomcat application from the browser. This time it should be Successful
steps are there in tomcat-server repo... Start jenkins and configure it ..
=========================================================
For freestyle project with plugins :
yum install maven -y
yum install git -y
mvn --version
https://github.com/ramannkhanna2/hello-world-maven-pipeline.git
under execute shell >>
mvn clean package
--- from dashboard , add "deploy to container" plugin under post build steps >> add deploy to container , mention tomcat server's username and password and url to deploy
WAR/EAR files >> **/*.war
SAVE AND BUILD
-- Now poll the pipeline
====================================================================
For declarative pipeline creation using Jenkinsfile :
for declarative pipeline :
install ,ssh-agent plugin
--- create jenkins credenials :
tomcat-new : ID for credentials to ssh into tomcat server
-- go to pipeline syntax and add ssh agent and define "tomcat-new" cred over there...
ssh username wud pvt key
username : centos
pvt-key
NOTE : UPDATE COMMANDS IN JENKINS FILE AS PER LATEST VERSION OF TOMCAT UR USING
sshagent(['tomcat-new']) {
//block
}
--- before running the build make sure to change permissions of tomcat folder in /opt
cd /opt/
ls
chown -R centos:centos apache-tomcat-9.0.78
surf publicIP:8080/myweb
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