AWs Interview Questions

 1).How to troubleshoot the aws ec2 kernel panic issue into aws environment?

stop the ec2 instances
take the snapshot for panic ec2 instances 

2).How to recover the elastic ip which you are missing?


recovering the elastic ipddress for using below methods:
you cannot recover the elastic ipaddress. maybe those ipaddress are allocated to the another aws account
exceeding your elastic ip address limit.
we can recover the elastic ipaddress using he aws ec2 api or cli only
copy the ipaddress somewhere
go to the Cmd prompt:
and login using the aws configure .
aws ec2 allocate-address --domain vpc --address elastic ipaddress 
in this way we can recover the elastic ip ..


3).ssh is not connecting . So how to troubleshoot the issue with in it ?



first checking the security groups
next we have to check the public subnet (weather the igw route is added or not)
next am going to check the status check of your instances 
instances status check and system status check
we have to check the key file permission .even we also needed to add the chmod 400 filename
further we have to check the instances status weather is running or not .
4).types of vpc endpoint services into aws environment?
5).difference between security groups and nacl into aws environment?



 



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