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Cloudbreak create instance on Openstack

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Cloudbreak create instance on Openstack

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Hi,

I used Cloudbreak on Openstack to create Hadoop cluster.I enabled autoscaling.CLoudbreak created new instance ,get this error:

Stack update failed. Reason: Failed to upscale the stack for CloudContext{id=34, name='bgidata', platform='StringType{value='OPENSTACK'}', owner='ae2e5c22-25b0-4283-aeb3-dcc06aa706ab'} due to: ResourceInError: resources.ambari_hostgroupslave1_218: Went to status ERROR due to "Message: Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance c6bf4a85-7f1d-45b7-ad89-77c7439631ad. Last exception: Insufficient compute resources: Free memory 3411.50 MB < requested 6144 MB., Code: 500"

the nova-conductor.log

2017-04-17 09:49:21.754 31597 WARNING nova.scheduler.utils [req-ed9615f2-6162-4c9b-9b2a-6e7873b4d932 5dd8626d644c47e88a09766ac1ea5e92 40d3119fd66d46e4956c02e3ebf6c863 - - -] Failed to compute_task_build_instances: Exceeded maximum number of retries. Exceeded max scheduling attempts 3 for instance ecda493e-6feb-4b4d-8ef1-522c3ce7b83a. Last exception: Insufficient compute resources: Free memory 3411.50 MB < requested 6144 MB.
2017-04-17 09:49:21.755 31597 WARNING nova.scheduler.utils [req-ed9615f2-6162-4c9b-9b2a-6e7873b4d932 5dd8626d644c47e88a09766ac1ea5e92 40d3119fd66d46e4956c02e3ebf6c863 - - -] [instance: ecda493e-6feb-4b4d-8ef1-522c3ce7b83a] Setting instance to ERROR state.

I have three nova compute nodes.The remain memory is enough.

any help is appreciated.Thanks!

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