Day 1

DevOps + SRE + DevSecOps + MDE

DevOps - 2 Months - https://devopsschool.com/certification/devops-certified-professional-dcp.html

SRE =- 3.5 Months= DevOps + SRE tools - https://devopsschool.com/certification/sre-certified-professional-srecp.html

DevSecOps = 3.5 Months= DevOps + Security - https://devopsschool.com/certification/devsecops-certified-professional-dsocp.html

MDE = DevOps + SRE + DevSecOps = 4 Months
=====================================
9 AM IST - 3-4 Hours
====================
========================================================
How to get Video Recordings?
https://www.devopsschool.xyz/
-------------------------------
Last 3 Batch Recordings + Advance Recording

How get Step by Step Tutorials
----------------------------
I would share every session
https://www.devopsschool.com/blog/

How to get Slides?
============================
I would share every session
https://www.devopsschool.com/slides/

How do we get Assignment & Project?
==============================
I would share with u after session in Whatsapp Group

Where to submit an Assignment?
---------------------------
https://www.debug.school/

How to Submit Any question & Support?
---------------------------
https://www.debug.school/
Code language: PHP (php)

Day 2 – 27 Jan 2024

PLATFORM
	LINUX
		VM
			Virtualbox
		CLOUD
			AWS
			Azure
			GC
	Docker
	Kubernetes
============================================
What is Docker?
	Aka Docker Engine
	Container mgmt tool/platform
	Written in Go lang
	Rel	
		Community 
		Enterprise
	Version
		25.x
	by Soloman Hykes

Why docker?
	To Run Containers

What is Containers?
	you can run apps in Container
			Earlier - Desktop -> Laptop -> VMS -> Container
		--------------------------------------------------------
					1 hours  -----> 5 mins --> 1 Sec
	its lightweight

	tool/platform
	- save cost == Container consume less CPU/RAM/STORage/ No lic cost
	- save time == 
	- improve quality

	mgmt
	VMs - create -> start -> stop -> restart -> kill -> pause > unpa -> kil > remove
	Containers - - create -> start -> stop -> restart -> kill -> pause > unpa -> kil > remove
=============================================================================
How to install Docker?
----------------------------
https://www.devopsschool.com/blog/how-to-install-docker-in-linux/

Docker architecture
----------------------------------------
YOU --> Docker Clinet --> Docker Server(Daemon) --> ContainerD --> Kernal
        =======================================
			Docker Engine
Components of Dockers
-----------------------------------------
Step 1 - Install Docker Engine

Step 2 - Download Docker Image
===============================
MACHINE IMAGE		AWS		AZUE		VirtualBox
OS IMAGE		AMI		vm image	ISO image
------------------
VM Image ==== BOOTFILESYSTE(Kernal) --> ROOTFILESYSTEM --> USERFS --> APPFS
		=========================================================
					1 Image

Docker Image = 
ROOTFILESYSTEM --> USERFS --> APPFS
ubuntu --- root -- bash/ls/cd
centos --- rajesh -- java -- tomcat --app
		
Step 3 - From where?
===============================
	Registry
		Repo(S)
			APP(Version of filesystem)
	hub.docker.com

Step 4 - 
Containers - - create -> start -> stop -> restart -> kill -> pause > unpa -> kil > remove

==========================
LOGIN TO VMS 
	===========> SHELL

ACCESS THE VM USING NETWORK
	=== IP : PORT


 110  clear
  111  docker version
  112  which docker
  113  which dockerd
  114  ps -eaf | grep dockerd
  115  clear
  116  docker pull httpd
  117  docker images
  118  docker version
  119  clear
  120  docker -v
  121  docker info
  122  clear
  123  docker ps
  124  docker ps -a
  125  docker create httpd
  126  docker ps
  127  docker ps -a
  128  docker start 82ebdf5f40a4
  129  docker ps -a
  130  docker stop 82ebdf5f40a4
  131  docker ps -a
  132  docker start 82ebdf5f40a4
  133  docker ps -a
  134  docker restart 82ebdf5f40a4
  135  docker ps -a
  136  clear
  137  docker ps
  138  docker pause 82ebdf5f40a4
  139  docker ps
  140  docker stats
  141  docker ps
  142  docker unpause 82ebdf5f40a4
  143  docker ps
  144  docker kill 82ebdf5f40a4
  145  docker ps
  146  docker ps -a
  147  docker rm friendly_elgamal
  148  docker ps -a
  149  clear
  150  docker create httpd
  151  docker ps -a
  152  docker rm b660a1c8eaee 803e25e307a2 6d72f20ea55c 7a6176ab998a 469b043b4cd1
  153  docker ps -a
  154  clear
  155  ls
  156  docker create httpd
  157  docker ps -a
  158  docker start 0c3b4c9354cb
  159  docker ps -a
  160  echo $SHELL
  161  docker exec -it 0c3b4c9354cb /bin/bash
  162  clear
  163  docker ps
  164  docker inspect 0c3b4c9354cb
  165  curl http://172.17.0.2







Code language: PHP (php)

11 Feb 2023

How to Get Linux VM?
---------------------
	in your Laptop - DONE

How to Get Linux Container?
---------------------
	in your Laptop - DONE

How to Get Linux VM in AWS?
---------------------
	Pending
==========================================
70% - PURE LINUX
------------------------------------------

------------------------------------------
How to learn Linux?
-----------------------------------------
What is Kernel? - DONE
Users Commands - 
Admin Commands - 
Linux Troubleshooting
Bash Scripting - 
=========================================
Users Commands - 
======================================================================
https://www.devopsschool.com/commands

CMD === executable lying at certain path
			CORE
			YUm|APT
==========================================
CMD
	min 10 of param
======================================================
How to communicate with hardware?
		Console UI
		CMDs
			SHELL
			LINUX
				C shell
				Sh
				ksh
				bash
			Windows
				ps
				cmd
-----------------------------------
Know your SHELL? BASH
		--------------
		configuration

======================================
 How Linux Login Works?
===================================

Protocla - SSH

SSH CLIENT ------------------------------> SSHD Server
		PACKET OVER NETWORK
		-------------------
			IPADD
=======================================================
How to login to linux?

SSH
	USER|PASS ------
	USER|KEY ----- User key  | PVT KEY

-----------------------
How  SSH Key authentication Works in Linux?
How  to Set Password less authentication in between 2 Linux server?

How to get more Access?
================================
Authentication ----> How to login?

	USER|PASS ------
	USER|KEY ----- User key  | PVT KEY

Authorization - What you are allowed to do?
======================================

Types of User in linux?
----------------------------
Normal user | root user

How to get root access or how to run commands as a root?
===========================================================
SUDO
-------------------------
	sudo without password
	sudo with password
	sudo with another user and password

Assignment
 - What is Sudo?
 - Know about the config file of Sudo
 - How to add user and their in sudo acccess for sudo
========================================================
Impersinate
--------------------------
su
==============
==============================================================
PACKAGE Manager

Install  | Remove  | Update
=============================================================
Android|IPH			LINUX			Windows		

PLAYSTORE|App Store		Apt | Yum		MS Store | chocolatey | nuget

apk| ipa			.deb  | .rpm		exe|msi	


Assignment 
-----------------------------------------
What is Apt?
Top 10 Commands of used in APT
How to configure repo in Apt

What is yum?
Top 10 Commands of used in yum
How to configure repo in yum
=================================================================================
TOP 100 USERS Commands in Linux
<blockquote class="wp-embedded-content" data-secret="BMYmGoyE13"><a href="https://www.devopsschool.com/blog/linux-commands-for-user/">Linux Tutorials: Commands for Linux User</a></blockquote><iframe class="wp-embedded-content" sandbox="allow-scripts" security="restricted" style="position: absolute; visibility: hidden;" title="“Linux Tutorials: Commands for Linux User” — DevOpsSchool.com" src="https://www.devopsschool.com/blog/linux-commands-for-user/embed/#?secret=AJ4HnbQEEw#?secret=BMYmGoyE13" data-secret="BMYmGoyE13" width="600" height="338" frameborder="0" marginwidth="0" marginheight="0" scrolling="no"></iframe>

20 	2
---------------
================================================================
Archiving and compressing
----------------------------------
Archive
- tar

Compress
- gzip and gunzip


Archive + Compress 
- zip

====================================================================
CHMOD VS CHOWN

===========================================

-	rw-	r--	r--  1 root   root   231696206 Dec 22 01:01 latest-unix.tar.gz
d	rwx	r-x	r-x 10 root   root        4096 Dec 23 09:10 nexus-3.64.0-01
==================================================
	OWNER    GROUP   OTHERS
	7	7	7
	7	5	5	EXECUTE
	RWX	RX	RX
	6	4	4	DEFAULT

R read		4	
W Write		2
X- Execute 	1
	==================
		7
==============================================================
Chown
===================================
 99  chown ubuntu:ubuntu latest-unix.tar.gz
  100  sudo chown ubuntu:ubuntu latest-unix.tar.gz
  101  ls -la
  102  clear
  103  ls
  104  ls -la
  105  chown rajesh:rajesh sonatype-work.zip
  106  sudo chown rajesh:rajesh sonatype-work.zip
  107  ls
  108  ls -lrt
  109  clear
  110  ls
  111  ls -la
  112  clear
  113  man chown
  114  clear
  115  ls
  116  chown -R root:root sonatype-work
  117  clear
  118  ls
  119  sudo chown -R root:root sonatype-work
  120  ls -la
  121  history
===========================================================
Finding a file Vs Finding a cOntent in the file
-------------------------------------------------
find		VS grep
https://www.devopsschool.com/commands/tools/linux/find - 30 mins

grep
https://www.devopsschool.com/commands/tools/linux/grep - 30 mins.

===================
. - CURR
.. -  BACK DIR
================================================
EDITOR
- vi		FOCUS
- nano
- sed
- vim
=========================================
Code language: HTML, XML (xml)

SonarQube

PLAN -> Code -> Ana -> Build

Jira	git	CodAna
conf	py

What is SonarQube?
============================
	Quality MGMT Tool

	Tool
	- Save cost
	- Save time
	- Imp Quality

	MGMT

	Quality
	- Code Quality 
			Peer Code Review
			Static Code Review
			https://en.wikipedia.org/wiki/List_of_tools_for_static_code_analysis
	- Test Quality

	by SonarSource
	Release
		Comm	- Free
		Develop
		Enterprise
		https://www.sonarsource.com/products/sonarqube/downloads/

	Using Java

Static Code Review
----------------------------------------
	Code Would Review Code
	Rule Would Review Code
	RuleS Would Review Code
	tool Would Review Code


How SonarQube Works!!
----------------------------------------------------

Human --> SonarQube WEB ---> DB(RDBMS)



C:\tools\sonarqube\sonar-scanner\bin\sonar-scanner.bat

===========================================
Server		sonar.properties

Scanner		sonar-scanner.properties

Project		sonar-project.properties



Code language: PHP (php)

Ansible

What is Ansible?
-----------------------------
config mgmt tool
Release
ansible cmd - free
tower  	- GUI - PAID
awx	- GUI - FREE
Python
From Redhat
config
SERVER(S) config mgmt
tool
save cost - Resources for Managing 1000s of server
save time
10 steps --- 1 mins -- 10 mins X 1000
10 steps - 1mins -- 10 mins - X 1000 - 10 mins
imp quality
mgmt
patching
install|remove
modify some files
modify some perm
SERVER
file
dir
user
group
package
services
==========================================
How Ansible works?
ACS - Ansible control server
ARS - ansible remote server
------------------------------------------
YOU -------> ACS ---------> ARS
ACS ---------------> ARS
Linux			Any
python			win - ps + dn
ansible			NA		
PROTO-----------SSH ------ Linux
------- winrm ----> Window
Component of ACS
=====================
Ansible
executables -----> 10s
modules ---------> python code --- run in ARS with param --- 1000s
plugins	---------> python code --- run in acs
configfile	/etc/ansible/ansible.cfg
playbook
--- its a Script which run in ARS 
Collection of Play
Play
inventory
--- file - contains IP ADDRESS of ARS
ACS
13.201.23.206
ARS
3.111.36.149
Ansible Adhoc commands
=============================
Requirement --->	deploy a webserver in prod
Step 1 - install apache2 in ubuntu		apt
Step 2 - copy index.html to /var/www/html/	copy
Step 3 - Start apache service			service
ansible localhost -m apt -a"name=apache2 state=latest"
ansible localhost -m copy -a"src=index.html dest=/var/www/html/"
ansible localhost -m service -a"name=apache2 state=started"
=====================================================
ansible all -i inventory -m apt -a"name=apache2 state=latest" -u ubuntu --key-file=node.pem -b
ansible all -i inventory -m copy -a"src=index.html dest=/var/www/html/" -u ubuntu --key-file=node.pem -b
ansible all -i inventory -m service -a"name=apache2 state=started" -u ubuntu --key-file=node.pem -b
inventory
------------
group - all
root@ip-172-31-10-141:~# more inventory
13.201.23.206
3.111.36.149
Behavioruial param
some_host         ansible_port=2222     ansible_user=manager
aws_host          ansible_ssh_private_key_file=/home/example/.ssh/aws.pem
freebsd_host      ansible_python_interpreter=/usr/local/bin/python
ruby_module_host  ansible_ruby_interpreter=/usr/bin/ruby.1.9.3
root@ip-172-31-10-141:~# more inventory
[web]
13.201.23.206
3.111.36.149
[db]
13.201.23.37
3.111.36.14
ansible web -i inventory -m apt -a"name=apache2 state=latest" -u ubuntu --key-file=node.pem -b
ansible web -i inventory -m copy -a"src=index.html dest=/var/www/html/" -u ubuntu --key-file=node.pem -b
ansible web -i inventory -m service -a"name=apache2 state=started" -u ubuntu --key-file=node.pem -b
===================================================
playbook 
collection of play
yaml
what is play
host: localhost or all or web
tasks:
module1 and its pararm
module2 and its pararm
module3 and its pararm
- hosts: web
tasks:
- name: Install apache httpd  
ansible.builtin.apt:
name: apache2
state: present
- name: Copy file with owner and permissions
ansible.builtin.copy:
src: index.html
dest: /var/www/html/index.html
- name: Start service httpd, if not started
ansible.builtin.service:
name: apache2
state: started
ansible-playbook -i inventory play.yaml -u ubuntu --key-file=node.pem -b
vars
https://www.devopsschool.com/blog/example-code-of-ansible-variable-with-playbook/
---
- name: Update web servers
hosts: web
vars:
myname: "Rajeshkumar"
age: "18"
packagename: "apache2"
servicename: "apache2"
vars_files:
- "vars.yaml"
vars_prompt:
- name: "version"
prompt: "Which version Do you want to install?"
private: no
tasks:
- name: Install Apache in ubuntu
ansible.builtin.apt:
name: "{{ packagename }}"
state: latest
- name: Copy index.html
ansible.builtin.copy:
src: index.html
dest: /var/www/html/index.html
- name: Starting a Apache Server
ansible.builtin.service:
name: "{{ servicename }}"
state: started
- name: Print return information from the previous task
ansible.builtin.debug:
var: myname
- name: Print return information from the previous task
ansible.builtin.debug:
msg: "My Name is {{ myname }} and My age is {{ age }}"
- name: Print return information from the previous task
ansible.builtin.debug:
var: version
ansible-playbook -i inventory varex.yaml -u ubuntu --key-file=node.pem -b
tasks
vars
files
---
- name: Calling role
hosts: web
roles:
- web
ansible-playbook -i inventory site.yaml -u ubuntu --key-file=node.pem -bCode language: PHP (php)