#LearningDevops - Kaniyam Foundation - Docker - Day 2

Virtualization

1. Virtual Box

2. Why Virtualization is needed ?

   • Testing application software

   • under different os

   • contstraint memory (process allocation)

Web hosting

1. Linux machine -> Apache -> HTML files

2. In a single computer how many can we host ?

3. Static webpage

4. Dynamic webpage

   1. feedback form

   2. forums

Change root directory

1. chroot

2. usually

   1. /lib - all installed binary files

   2. /bin - binary file

3. Created a directory and set as root. Install all the packages here and operate inside it.

4. Not able to scale

5. No different OS. Only host OS

Virtualization

1. OS - Kernel -> Host OS, Guest OS

Solved many problems "It works on my machine"

Virtualization / Container -> Zip the developer machine and ship it.