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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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IPv6: Interface IP operations are stopped with floating IP in HA failover

When a main node fails, its IP (IPv6) floats to standby node. The standby node is supposed to provide service henceforth on that IP. Given that both these nodes co-exist in the same LAN, often it is seen that the standby node becomes unreachable.…
user31986
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AttributeError: 'str' object has no attribute 'isoformat'

I have code, and I don't know how to solve problem. Code: import dateutil.parser import datetime from novaclient.v2 import client as nova_client from keystoneclient.auth.identity import v2 from keystoneclient import session…
Lera
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OpenStack: MessagingTimeout: Timed out waiting for a reply

Running OpenStack Newton, fresh install, am getting this on the compute node (in nova-compute.log) when trying to launch an instance: 2017-04-04 19:28:47.546 31726 ERROR nova.compute.manager [req-af37e2ee-0ef9-4d4e-b3ce-d7a1bf27a780 - - - - -]…
Gregory Golberg
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change keypair in an active instance

Openstack version - Pike In Openstack there is no provision to change the keypair of any active instance. Queens and Rocky give the option in rebuild command, but that will re-create the instance again. 1. Is there any way to change the keypair of…
Kushagra Srivastava
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How to attach a floating IP using the present environment on openstack

I'm newbie on openstack heat file. I did search but I didn't find relevant answer to my question. Here my template heat yaml file : heat_template_version: newton description: Simple template to deploy a single compute instance with an attached…
dubis
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qemu-kvm showing over 100% of CPU usage in top command

I am running openstack on centos 7. All openstack services run within docker containers. I keep seeing high CPU usage from qemu-kvm as I launch more instances on openstack. Below is an image showing output from my top command for about 20 seconds…
Joey Corkey
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No rejoin-stack.sh script in my setup

I've installed the "all-in-one" setup of DevStack. But when I rebooted my system nothings works, and I lose all my already-created instances, images, configs, ... I've found that I need to use the script rejoin-stack.sh but in my setup doesn't…
Ouadi
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Set SSH Host IP Address on Rackspace for Ansible

The Question When using the rax module to spin up servers and get inventory, how do I tell Ansible to connect to the IP address on an isolated network rather than the server's public IP? Note: Ansible is being run from a server on the same isolated…
jchamberlain
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Openstack. "No valid host was found" for any image other than cirrOS

I'm getting the following error on my Openstack (DevStack) every time I try to launch an image other than cirrOS. Walking through internet leads me to: Openstack cannot allocate RAM, CPU resources. It's not true because I have a lot of RAM, disk…
ZuzEL
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Cannot create volume of more than 2 GBs in openstack

I have installed OpenStack on my local machine. I am able to perform every functionality such as uploading image, creating and launching instance, associating floating ip etc. But I cannot create volume of more than 2 gb. If I create any volume of…
Apurva Mayank
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getting 443 error while checking out code from github

I am trying to get the nova code from github and I got the following error : #git clone https://github.com/openstack/nova.git Initialized empty Git repository in /home/avikki/Desktop/nt/nova/.git/ error: Failed connect to github.com:443; Operation…
user2160312
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NoValidHost: No valid host was found. There are not enough hosts available

When I create the instance in the dashboard, I get error: No valid host was found. There are not enough hosts available. In the /var/log/nova/nova-conductor.log file, there is the log: 2017-08-05 00:22:29.046 3834 WARNING nova.scheduler.utils…
aircraft
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OpenStack CLI Failed SSL Verification

When executing an openstack command, it is failing to verify a certificate that was signed by an internal CA. CentOS 7 Root CA installed in /etc/pki/ca-trust/source/anchors openstack 3.3.0 $ openstack server list Discovering versions from the…
Steve Wall
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What is the value/benefit of OpenStack "Network/Storage" nodes?

OpenStack has 3 types of core nodes: Compute (Nova) Storage (Cinder) Network (Neutron) But to me, all Compute/Nova instances are VMs. VMs with file systems. VMs that need to be networked, and ultimately receive their network connections from a…
smeeb
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openstack compute (nova) "error"

I'm trying to install OpenStack compute (nova) .. when I run command **nova list** then out the results ERROR: You must provide a username via either --os_username or env[OS_USERNAME] how to code a solution for me?
Elvis Jon Freddy Sitinjak
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