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Questions tagged [openstack]

OpenStack is a collection of open source projects that enables an open, scalable cloud infrastructure. The core of OpenStack is meant to provide consistent APIs and interfaces to a variety of potential back-ends.

OpenStack is an open-source platform for building infrastructure-as-a-service (IaaS) clouds. It is implemented including several components, most notable being:

  • a Compute service (codenamed Nova) that has functionality similar to EC2 AWS (and implements an EC2-compatible API, as well as a separate OpenStack API)
  • an Object Storage service (codenamed Swift) that has functionality similar to EC2 S3.
  • An Image service (codenamed Glance) that manages virtual machine images used by the Compute service
  • An Identity service (codenamed Keystone) that manages user names and groups (known as tenants) across the OpenStack projects
  • A Dashboard service (codenamed Horizon) that provides a web interface.
  • A Network service (codenamed Neutron) that provides a set of components for makings SDN networking between VM's inside a project.

Official page

You may also want to use more specialized tags like , , , , , .

675 questions
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NGINX and OpenStack Horizon?

I recently update our web infrastructure to use NGINX instead of our Apache servers. Now, I'm also operating an OpenStack Infrastructure and I was wondering if there is a state of the art way to replace Apache/Mod_wsgi with any NGinx/uwsgi…
Dr I
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DHCP reply packets do not make it into KVM instance in OpenStack

I'm running a KVM instance inside of OpenStack, and it isn't getting an IP address from the DHCP server. Using tcpdump, I can see the request and reply packets on vnet0 of the compute host: # tcpdump -i vnet0 -n port 67 or port 68 tcpdump: WARNING:…
Lorin Hochstein
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Ping responses to floating IPs do not reach the router (iptables/nat)

I'm running OpenStack, and I'm having trouble accessing my instances from floating IPs, from anywhere except the network controller node. I've got a Folsom deployment with FlatDHCP, not running multi-host, running on Ubuntu 12.04. As an example,…
Lorin Hochstein
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Does nova support pxe boot?

I'm working on an OpenStack-based project. Now we need a virtual machine to boot from PXE. I cannot find any document about that. Does nova support PXE boot? If yes, how do I create a KVM image that equivalent is equivalent to a naked machine that…
TieDad
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OpenStack "quantum" network manager and existing bridge/VLAN devices

The Quantum network manager included with recent versions of OpenStack does not support the --bridge and --bridge-interface arguments to the nova-list network create command. Short of writing a new Quantum plugin, is there any way to get Quantum to…
larsks
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What happens if an OpenStack cloud controller dies?

I've been reading up on OpenStack and how we can re-create an EC2/S3-style cloud for our internal development and I'm having a hard time finding information on how the OpenStack cloud controller provides redundancy of the cloud management…
Rafael Fonseca
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How to convert VirtualBox VM to OpenStack?

I'm running OpenStack in Ubuntu Server 11.10 (installation did using devstack script), but I have some virtual machines that are already running using VirtualBox. How can I convert the VirtualBox machines to run in OpenStack and what is the best way…
Álvaro Justen
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projects or packages to emulate a tape drive with a Amazon S3 or OpenStack Swift compatible backend?

I've got some data that is being backed up to tape via bacula, and at some point soon I am going to need to migrate to non-tape storage. Bacula supports to-disk archiving, but it occurred to me that if only there was some virtual tape library…
Tom
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slow performance on ssd when using kvm to launch vm's

On my host hardware I have 1G's speed on my vm I create using kvm it drops to around 20MB's My host is running ubuntu 22.04 LTS How can I optimise this? I am using file based VM's. I created disk type raw and qcow2 only difference I saw was the…
shorif2000
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Openstack Nova and Ceph Volume Attachment Issue

I am trying out the volume attachment function at Openstack (version:wallaby) to the server as additional device but failed. The volume backend is ceph which all of the osds are up and healthy. ceph-osd/38* active idle 0 …
ony4869
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CoreDNS failing due to a loop: how to feed kubelet with proper resolvConf?

This is where investigation started: CoreDNS couldn't work for more that a couple of seconds, giving the following errors: $ kubectl get pods --all-namespaces NAMESPACE NAME READY STATUS …
AbreQueVoy
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coredns pods stuck in Pending state

I'm trying to learn k8s and since I happen to have access to OpenStack cloud I figured I'll try to install k8s on it, following this wiki. So far I was able to initialize cluster, install weave CNI, connected an external worker and install…
Bartek Gmerek
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How to resize a volume in an instance on OpenStack?

check using volume from list openstack volume list set status to available to a volume openstack volume set --state available [volume id] resize the volume openstack volume set --size 40 [volume id] check size and status again Openstack volume…
rawmain
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OpenStack Hyper-V vSwitch not being selected

I'm updating this, as the original did not get much support. And, I'm not seeing that error anymore since restarting with a fresh install using packstack. To help try to "help you, help me." I am posting all the relevant configs for my install, in…
John C
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Kolla OpenStack deployment fails with "haproxy : Waiting for virtual IP to appear"

I'm trying to deploy OpenStack Queens with kolla-ansible (7.0.0) on Ubuntu hosts, following the official guide. After successful bootstrap-servers and precheck the deploy command fails: RUNNING HANDLER [haproxy : Waiting for virtual IP to appear]…
Gerald Schneider
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