DAY9.md

DAY9

amazon EBS(elastic block storage)

• today session is about connecting google drive with aws and use python to store and access data.

~protocol that combine different-2 storage virtually

many HD connected to a single device ---that combine all HD called DEVICE MAPPING.

device mapping===>(1)LVM (2) Stratis

LVM(logical volume management)

• combine two hard disk and create a virtual HDD
• make partition from virtual hard disk

How

• add two hard disk on amazon instance

creat physical volume

• command --->pvcreate
• pvcreate /dev/xvdh /dev xvdg
• system show pvcreate ot found
• command ---> yum which provides */pvcreate
• command ---> vgcreate anyname /dev/xvdh /dev/xvdg
• check size of volume--->
• command --->vgdisplay name

create hard disk

• lvcreate --name part1 --size 400M myhddrive
• lvdisplay diaplay the content of logiacl volume

how to formate

• mkfs.xfs /dev/mapper/myvirhdd-part1

how to mount

• mount /dev/mapper/myvirhdd-part1

permanent mount

• vim /etc/fstab
• mount -a

add a new user on amazon

• go to instance
• useradd adhoc
• passwd adhoc

Micro Services

1. Software + OS both are launching together are called micro services
2. linux container(lxc)
3. process level security(this is use for remove the conflicting of multiple softwares )
4. micro os 1.84 KB
5. Rhel-8=====> 1. podman 2. buildah
6. Rhel/U 18.04 -> Docker

python part ==>

• today topics in python

python data streaming

• (module,file handling,input,print,)
• (IP,Port,TCP,UDP)
• UDP example.....DNS,video streaming,DHCP
• TCP example ...... http,https

ip---->127.0.0.1(common)for everyone

• ping show the connectivity 192.168.10.201(between---0-255)ipv4

• port Byte- 2 Byte

• Broadcast -- single sender ---multiple reciver

• unicast--- single seder --- single reciver

• multicast--- multiple sender ---fixed reciver llllll