Devops overview

 

Course link: https://learn.kodekloud.com/user/dashboard

CI/CD pipeline :

Package dependency:

Dockers:

Kubernets

If any container has any issue , kubernet will help to restart or resume the container operations.

Terraforms

Provisioning of servers

if any manual change in server configuration, it will be returned to the same state again.

linux interface  : link

• VI Editor Commands : https://www.redhat.com/sysadmin/introduction-vi-editor
• user accounts:
•  whoami
• id
• su aparna 
• ssh aparna@192.168.1.2
• user accounts: sudo ls /root
• download files : 
• curl URL -O
• wget URL -O some-file.txt
• os version 
• ls /etc/*release*

Package Managers

• Centos uses RPM(Red Hat package  manager)
• software is bundled in .rpm (telnet.rpm)
• installing package using command - (rpm -i telnet.rpm)
• uninstalling package using command - (rpm -e telnet.rpm)
• query package using command - (rpm -q telnet.rpm)
• yum loads all the dependencies of a package manager

Services

• when servers are rebooted we can ensure some services are triggered automatically in order.