You are designing a system that has a Bastion host. This component needs to be highly available
without human intervention.
Which of the following approaches would you select?
A.
Run the bastion on two instances one in each AZ
B.
Run the bastion on an active Instance in one AZ and have an AMI ready to boot up in the event
of failure
C.
Configure the bastion instance in an Auto Scaling group Specify the Auto Scaling group to
include multiple AZs but have a min-size of 1 and max-size of 1
D.
Configure an ELB in front of the bastion instance
c
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c
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Ans: C
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A.
Run the bastion on two instances one in each AZ – True
B.
Run the bastion on an active Instance in one AZ and have an AMI ready to boot up in the event of failure – They say without human intervention so False
C.
Configure the bastion instance in an Auto Scaling group Specify the Auto Scaling group to include multiple AZs but have a min-size of 1 and max-size of 1 – False!!! Max size of 1 – WTF?
D. Configure an ELB in front of the bastion instance – False – What about auto-scaling ?
So A is the correct answer
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Min and max size of 1 group exists, in AWS it is called “Steady state” group
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C
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