sathyadevops/jenkins-ansible

jenkins-ansible

                                               Jenkins-Ansible Integration
                                            ----------------------------------------

Step-1: Create Two Servers :

                  1 - Jenkins and Ansible Master
                  1 - Ansible Node

Step-2: Jenkins Installation :

       # sudo su -
       # apt-get update      
       # apt-get install openjdk-11-jdk  -y	
       # apt-get install tomcat9 -y
       # apt-get install git-core -y
       # apt-get install ant  -y
       # apt-get install maven  -y

to change tomcat port :

#vi /etc/tomcat9/server.xml <Connector port="9090"

service tomcat9 restart

Google ---> jenkins download

Step-3: Download Jenkins :

       #  curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo tee \
/usr/share/keyrings/jenkins-keyring.asc > /dev/null

echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \

https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
/etc/apt/sources.list.d/jenkins.list > /dev/null

Install Jenkins :

       # apt-get update
       # apt-get install fontconfig openjdk-11-jre
       # apt-get install jenkins  -y

To Set paths:

Jenkins  --> select "Manage Jenkins" --> "Global tool configuration"

Java path : /usr/lib/jvm/java-11-openjdk-amd64

Git path : /usr/bin/git

ANT Path: /usr/share/ant/

Maven Path: /usr/share/maven/

Jenkins user Permissions:

apt-get install acl -y

setfacl -m u:jenkins:rwx /opt

setfacl -m u:jenkins:rwx /var/lib/tomcat9/webapps

getfacl /opt

getfacl /var/lib/tomcat9/webapps/

Step-4: Install ansible on Master:

             # apt-get update
             # apt-get install software-properties-common -y
             # apt-add-reposotiry ppa:ansibe/ansible
             # apt-get update
             # apt-get install ansible -y
             # ansible -version

vi /etc/ansible/hosts

[node] 172.31.36.172

               # ansible all -m ping

172.31.36.172 | SUCCESS => { "ansible_facts": { "discovered_interpreter_python": "/usr/bin/python3" }, "changed": false, "ping": "pong" }

Step-5: Configure SSH for Ansible-Master and Nodes

Step-a: to change root password :

           node# passwd  root
   Enter new passwd :  root

Step-b: to configure ssh:

           node# vi /etc/ssh/sshd_config
    [press 'i' for insert mode]
PermitRootLogin   yes
PasswordAuthentication   yes
    [press 'Esc']
    [:wq  ---> write and quit]

Step-c: to restart ssh service:

          node# service ssh restart         (for Ubuntu nodes)
                              [OR]
          node# systemctl restart sshd   (for Redhat nodes)

Step-d: to Connect with Nodes:

          node# hostname  -i         (to get an  Private IP-Address)
         [OR]  # ifconfig      
         [OR]  # ip  a         

          node# curl ifconfig.me     (to get an  Public IP-Address)
           [OR]   curl ifconfig.in

          node# hostname  -f         (to get a Host Name / FQDN)

          mstr#  ssh  <node-IP>



                            Password less Authentication  (SSH-Keys)
                            -------------------------------------------------------------

Step-x: to generate a Key-pair

         mstr#  ls  -a          (to list hidden files)
         mstr#  cd .ssh   
         mstr#  ssh-keygen
         mstr#  ls
         id_rsa          (private key)
         id_rsa.pub   (public key)

Step-y: to send public key to nodes

      mstr#  ssh-copy-id   <node IP Address>

Step-z: to Connect with Nodes:

          mstr#  ssh  <node IP>

Step-6: Install and Configure Asible Plugin :

Jenkins  ---> Manage Jenkins ---> "Plugins"  ---> Available --> 
         search for "Ansible Plugin" --> install without restart

Jenkins  ---> Manage Jenkins  ---> "tools" --> select "Ansible"
      Name:   Ansible
      Path to ansible executables directory:  /usr/bin

Step-7: define playbooks

    # mkdir playbooks
    # vi pb1.yml

---

• hosts: all gather_facts: true become: true tasks:

  • name: to install apache apt: name=apache2 update_cache=yes state=present changed_when: true

  • name: to deploy file copy: src: /opt/index.html dest: /var/www/html/index.html changed_when: true

  • name: to start service service: name=apache2 state=started changed_when: true

  cd /opt

  ls -l playbooks/

  chown -R jenkins:jenkins playbooks/

  cd /var/lib/jenkins

  mkdir .ssh

  cp ~/.ssh/* .ssh

  chown -R jenkins:jenkins .ssh

Step-8: Create Jenkins Project :

Jenkins ---> New Item --> "Free style project"

Build steps --> select "Invoke Ansible Playbook"  --> 	

Ansible installation: Ansible
Playbook path: /root/playbooks/pb1.yml
Inventory: File or host list  --> /etc/ansible/hosts
Host subset:  web
Credentials:  xxxxx

Started by user admin Running as SYSTEM Building on the built-in node in workspace /var/lib/jenkins/workspace/JENKINS-ANSIBLE-PROJECT [JENKINS-ANSIBLE-PROJECT] $ /usr/bin/ansible-playbook /opt/pb1.yml -i /etc/ansible/hosts -l web -f 5 --private-key /tmp/ssh15539247242160740393.key -u root

PLAY [all] *********************************************************************

TASK [Gathering Facts] ********************************************************* ok: [172.31.7.40]

TASK [to install apache] ******************************************************* changed: [172.31.7.40]

TASK [to deploy file] ********************************************************** changed: [172.31.7.40]

TASK [to start service] ******************************************************** changed: [172.31.7.40]

PLAY RECAP ********************************************************************* 172.31.7.40 : ok=4 changed=3 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

Finished: SUCCESS