* On the physical host, ec2 is a VM, and EBS volume not their in physical host they are connected via a network to this particular host
* Where as Instance store is their on the physical host it self
* When we stop any ec2 instance the resoureces of that particular instace become free which means CPU RAM will be free but data which is available in EBS volume that is connect by network is remain their
* We stop and start the instance the underline hardware change but we reboot the ec2 instance only os whould reboot nothing will change
========================================================================================================================================
ec2 Auto Recovery:- Auto recovery is a process which helps you to recover your instance in case something went wrong at your H/W level or on the host level
Main two prars in auto recovery:-
(1) System status check:- There is some issue with the software of pysical host. We can not do any thing on system status check
(2) Instance status check:- Which are reletated to our ec2 instance level
Events:- If any actvity have planed by amazon side it will show in event, so we can plane to stop or any migration of our instance.
Limit:- Aws provide limit for luacnhing any service suppose any developer start a for infinity loop to lauch a instance and this loop lauch many instances, limit feature stop these type of actvity. if we want to increase limit of any service have to request to AWS
Limits are two types:-
(1) Soft limit:- we can request to AWS to increase the limit of that particular service i.e. ec2, s3, vpc etc
(2) Hard limit:- We can not request to AWS to increase the limit of that service just like security group, rule in security grop etc.
Private IP:- Private IP address is associated with eithernet of ec2 instance, when we login any ec2 instance it shows, this ip address is not accessable from out side the world, and belogns to particular VPC, when we stop/satar/reboot the instance ip address does not change.
Public IP:- Public ip address is accessable from out side the world, but these are limited, so for any application internal communication we use only private IP, when we stop and start the ec2 instance public IP automatic relese and new public IP assign, if we reboot any instance then public IP does not change.
Elastic IP:- Elastic IP work as a public IP, we generate and elastic ip and accociate with any ec2 instance and if we stop and start that ec2 instance then public IP wil not change due to this elastic ip which is associated with particular instance.
Suppose we want do migrated any appilcation and we create power full server configuration then as per elastic ip side we simple deattach elastic ip from older server and attach to new serve.
* Where as Instance store is their on the physical host it self
* When we stop any ec2 instance the resoureces of that particular instace become free which means CPU RAM will be free but data which is available in EBS volume that is connect by network is remain their
* We stop and start the instance the underline hardware change but we reboot the ec2 instance only os whould reboot nothing will change
========================================================================================================================================
ec2 Auto Recovery:- Auto recovery is a process which helps you to recover your instance in case something went wrong at your H/W level or on the host level
Main two prars in auto recovery:-
(1) System status check:- There is some issue with the software of pysical host. We can not do any thing on system status check
(2) Instance status check:- Which are reletated to our ec2 instance level
Events:- If any actvity have planed by amazon side it will show in event, so we can plane to stop or any migration of our instance.
Limit:- Aws provide limit for luacnhing any service suppose any developer start a for infinity loop to lauch a instance and this loop lauch many instances, limit feature stop these type of actvity. if we want to increase limit of any service have to request to AWS
Limits are two types:-
(1) Soft limit:- we can request to AWS to increase the limit of that particular service i.e. ec2, s3, vpc etc
(2) Hard limit:- We can not request to AWS to increase the limit of that service just like security group, rule in security grop etc.
Private IP:- Private IP address is associated with eithernet of ec2 instance, when we login any ec2 instance it shows, this ip address is not accessable from out side the world, and belogns to particular VPC, when we stop/satar/reboot the instance ip address does not change.
Public IP:- Public ip address is accessable from out side the world, but these are limited, so for any application internal communication we use only private IP, when we stop and start the ec2 instance public IP automatic relese and new public IP assign, if we reboot any instance then public IP does not change.
Elastic IP:- Elastic IP work as a public IP, we generate and elastic ip and accociate with any ec2 instance and if we stop and start that ec2 instance then public IP wil not change due to this elastic ip which is associated with particular instance.
Suppose we want do migrated any appilcation and we create power full server configuration then as per elastic ip side we simple deattach elastic ip from older server and attach to new serve.
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