Rally

run test creating more than 253 insances

Asked by Hui Kang

Hi, I created a subnet 10.0.0.0/24 for Rally testing.

In my rally test, I want to test creating 500 instances. In the middle of the benchmark, it reports u'No fixed IP addresses available for network:
How can I run test creating more than 253 instances? Thanks.

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Andriy Kurilin (andreykurilin) said : 		#1

Hi!

/24 subnet contains only 256 addresses. Two of them are reserved for network address and for broadcast, so it is possible to create only 254 instances in such network. /23 subnet should be enough for your test-cases. It contains 512 addresses.

Subnet Mask Cheat Sheet : https://www.aelius.com/njh/subnet_sheet.html

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