best-project

sample repository for devops engineers

Devops pipeline for UBUNTU 18.04

ssh localhost setup

ssh localhost

if not then setup ssh by running the below commands:

sudo apt-get install openssh-server openssh-client -y

for local user

cd ~

ssh-keygen -t rsa -P "" (press enter without typing anything)

cp .ssh/id_rsa.pub .ssh/authorized_keys

ssh localhost

for admin user

sudo su

cd ~

ssh-keygen -t rsa -P "" (press enter without typing anything)

cp .ssh/id_rsa.pub .ssh/authorized_keys

ssh localhost

pip 2 & ansible installation

sudo apt install python-pip

pip install ansible

Ansible version check

`ansible --version

ansible 2.8.5 config file = /etc/ansible/ansible.cfg configured module search path = [u'/root/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules'] ansible python module location = /usr/local/lib/python2.7/dist-packages/ansible executable location = /usr/local/bin/ansible python version = 2.7.17 (default, Sep 30 2020, 13:38:04) [GCC 7.5.0]`

Ansible playbook run

git clone https://github.com/Sathiyarajan/best-project.git

cd best-project/ansible

ansible-playbook install-site.yml -vv -i hosts

docker commands

remove older version

sudo apt-get remove docker docker-engine docker.io containerd runc

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 apt-key fingerprint 0EBFCD88

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

sudo apt-get update

sudo apt-get install docker-ce docker-ce-cli containerd.io

to build a code & docker image:

git clone https://github.com/Sathiyarajan/best-project.git

cd best-project/docker

docker build -t <dockerhub_username>/flaskapp:1.1 .

docker run -ti 5103c1f975dc /bin/bash

docker run -d -p 5000:5000 8f6adb7689b5

docker logs 5103c1f975dc

docker logout

docker login

curl http://localhost:5000
Hello World!#

docker push sathyadev/flaskapp:1.1

docker pull sathyadev/flaskapp:1.1

docker rmi -f <imaegeId>

docker rm -f <containerId>

jenkins installation in ubuntu & AWS:

https://medium.com/@Marklon/how-to-install-jenkins-on-ubuntu-16-04-on-aws-e584c45c2684

https://medium.com/@kryptonian1111/installing-jenkins-on-ec2-9bb51d8bd670

installation steps

sudo apt install default-jdk

sudo apt install default-jdk

sudo wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -

sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'

sudo apt-get update

sudo apt-get install jenkins

to check the status of jenkins installation

sudo systemctl status jenkins

enable the 8080 port for Jenkins CI UI

sudo ufw allow 8080

sudo ufw status

sudo ufw enable

to start jenkins

sudo systemctl start jenkins

login to jenkins and proceed with the next steps:

https://localhost:8080

get the password & proceed with the next steps:

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

git commands:

to download a repo:

git clone https://github.com/Sathiyarajan/best-project.git

to create a branch

git checkout -b besant_sathya

check the files added

git status

check the difference between local files & remote git repo files

git diff

to add files to a local repo

git add .

commit a fies to local repo

git commit -m "commit message"

push the code to remove git repo

git push origin besant_sathya