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Questions tagged [openstack-nova]

Nova is the project name for OpenStack Compute

Nova is the project name for OpenStack Compute, a cloud computing fabric controller, the main part of an IaaS system. Individuals and organizations can use Nova to host and manage their own cloud computing systems. Nova originated as a project out of NASA Ames Research Laboratory.

Nova is written with the following design guidelines in mind:

  • Component based architecture: Quickly add new behaviors
  • Highly available: Scale to very serious workloads
  • Fault-Tolerant: Isolated processes avoid cascading failures
  • Recoverable: Failures should be easy to diagnose, debug, and rectify
  • Open Standards: Be a reference implementation for a community-driven api
  • API Compatibility: Nova strives to provide API-compatible with popular systems like Amazon EC2
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How to add a table in Nova Database : Openstack

I'm adding one class nova.db.sqlalchemy.models to create associated table in Nova DB but its not reflecting there. Doing same in neutron is creating a Table in Neutron DB. Openstack documentation does not explains how to extend the database…
devesh-ahuja
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Choose compute node(hypervisor) for instance creation with ansible openstack.cloud.server module

I am looking to specify which compute node to reside on when creating an instance with Openstack ansible module openstack.cloud.server, Actually I want to ansiblealize the following command: $ openstack server create --flavor g2 --image Ubuntu-20.04…
YosSaL
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How to run ESXi on Openstack under a KVM VM

We run Openstack with KVM as hypervisor and now need to run ESXi 6 or 7 inside a VM (nested virtualization). This is mainly for converting disks to proper vmdk disks, not really running any VMs under ESXi (that is why we are not using a barebone and…
Eugen Mayer
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Failed to create openStack instance

I'm new to open stack , and when I try to create instance it gives me this error: [Error : Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 57100c2f-a290-4165-b4c0-ba2202cfb728.]
Samaha Oum
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Error: Build of instance c1192e0a-e815-4f4e-b995-05d0c6bd2dfc aborted: Failed to allocate the network(s), not rescheduling?

`enter code here's get this error when building a machine in OpenStack I checked Nova service logs and received this error Error: Build of instance c1192e0a-e815-4f4e-b995-05d0c6bd2dfc aborted: Failed to allocate the network(s), not rescheduling
Reza Bojnordi
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Failing to attach volume to openstack instance

I am attempting to attach a volume to an image. My attempts consistently fail. I am using the following command to create the attachment: openstack server add volume test_instance testvol where test_instance is my instance and testvol is the 20G…
Factor Three
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Conditions for Stack Update Restrictions in Openstack

I am trying to update a stack using openstack heat templates to bring up and configure new nova Servers as a part of existing Server Group. When added configuration information(for new nova Servers) in the templates which are shared by existing and…
Supraja Grandhi
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Facing issue while trying to install Kubernetes [ubuntu18 image on openstack]

Since yesterday, I am struggling with this strange issue: node "kmaster" not found. I tried with multiple combinations of installing kubernetes on jetstream instance. using calico in ubuntu using flannel in centos and few other ways I looked it…
prashant.kr.mod
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Show Server details via Python OpenStack API using the nova client

I am trying to convert my BASH script to Python and am having difficulties in finding the equivalent code for openstack server show or openstack server list --long. I would like to know what host is my server currently located and use this…
CheddarChiz
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Deploy Kubernetes on OpenStack

I am trying to understand the relationship between Kubernetes and OpenStack. I am confused around the topic of deploying Kubernetes on OpenStack and doing my research I found there are too many tutorials. My understanding of the sequence is: Start…
BAE
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Does cloud-init service in OpenStack VM fetches UserData on every instance reboot

I would like to understand how does cloud-init service in OpenStack VM fetches the UserData content on every reboot ? I believe it fetches through OpenStack Metadata server but does this happen on every instance reboot ? Because I see the below list…
Jayaprakash
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Why an attribute of the class cannot be called?

I am modifying the code of openstack-nova. After adding a RESTful api, I got this error: eption during message handling: AttributeError: 'SchedulerReportClient' object has no attribute 'obj_to_primitive' 2018-08-30 23:08:10.904 1637 ERROR…
Don_Chen
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nova services fails intermittently to connect to rabbitmq with timeout error

I am using Openstack Pike with RabbitMQ 3.6.5 on Erlang 18.3.4.4 as the messaging queue. When the nova services are restarted, one of the nova services (mostly nova-scheduler) will have error in the logs as shown below. It says the service cannot…
VVM
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Error: No sql_connection parameter is established when creating instances on openstack pike devstack

I've successfully installed Openstack Devstack pike on my Ubuntu 16.04 by following this link: https://www.mirantis.com/blog/how-to-install-openstack-on-your-local-machine-using-devstack/. when i tried to create an instance i got No sql_connection…
rawia
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"Error: No valid host was found. There are not enough hosts available"+Newton

I have installed openstack (Newton release) on Ubuntu 16.04 (all in one). every service is running well, but when I try to launch an instance, an error occurs: Error: Failed to perform requested operation on instance "test1", the instance has an…
Fatemeh Abdollahei
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