RHEL OSP 7 で computeノードを大きくしようとすると、Maximum resources per stack exceeded エラーが発生する

Issue

• 既存の RHEL OSP 7 環境に compute ノードをさらに追加しようとすると、Heat で Maximum resources per stack exceeded. エラーが発生して失敗します。

"stack":{
"parent":null,
"disable_rollback":true,
"description":"Nova API,Keystone,Heat Engine and API,Glance,Neutron,Dedicated MySQL server,Dedicated RabbitMQ Server,Group of Nova Computes\n",
"links":[
{
"href":"http://192.168.24.1:8004/v1/f92abc8e8b4c4fe2a6a8d8e03ab0ce31/stacks/overcloud/64651112-aea9-4664-9070-a095a171fe92",
"rel":"self"
}
],
"stack_status_reason":"ResourceUnknownStatus:Resource failed - Unknown status FAILED due to \"RequestLimitExceeded:Request limit exceeded:Maximum resources per stack exceeded.\"",
"stack_name":"overcloud",
"stack_user_project_id":"2a96dacd134147db88f9c921ff1f9b11",
"stack_owner":"admin",
"creation_time":"2015-09-07T02:27:07Z",
"capabilities":[
],
"notification_topics":[
],
"updated_time":"2015-09-07T19:01:35Z",
"timeout_mins":240,
"stack_status":"UPDATE_FAILED",
"parameters":{
"NeutronPublicInterfaceRawDevice":"",
"KeystoneSigningKey":"******",
"NtpServer":"0.rhel.pool.ntp.org",
"NeutronDhcpAgentsPerNetwork":"3",
"NeutronFlatNetworks":"datacentre",
"NovaEnableRbdBackend":"False",
"controllerImage":"overcloud-full",
"GlancePassword":"******",
"NeutronTunnelIdRanges":"1:1000",
"CinderEnableRbdBackend":"False",
"SwiftReplicas":"3",
"NeutronPublicInterfaceTag":"",
"ControllerHostnameFormat":"%stackname%-controller-%index%",