Server Fault Stack Exchange
Server Fault Stack Exchange

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
4
votes
0 answers

Mounting whole-disk filesystems in Windows 2008?

I am booting a Windows instance in an OpenStack environment. OpenStack can use a "configuration drive" to pass information into the instance. This drive is formatted as a whole-disk MS-DOS filesystem (i.e., there is no partition map). Is there any…
larsks
  • 43,623
  • 14
  • 121
  • 180
4
votes
4 answers

Openstack: Is it possible to migrate an instance from a dead compute server to a live one?

I've got a cluster with 84 Openstack Essex compute nodes, one of which decided to pine for the fjords about 2 hours ago, with 8 running instances on it. The instances are all running off qcow2 disks on an NFS share, so the disk images are still…
cas
  • 6,783
  • 32
  • 35
4
votes
2 answers

What is the correct network configuration for a devStack VM (virtualbox)?

Usually when I setup a new Ubuntu VM, i keep the eth0 in NAT mode to get the internet & I add a eth1 interface in HostOnly mode so that I can ssh. But using this devStack guide : Running a Cloud in a VM, it looks like it tried to use eth0 as the…
Olivier
  • 415
  • 3
  • 5
  • 15
4
votes
1 answer

How does OpenStack Glance work with Keystone and what exactly are these configuration options for?

I am configuring Glance to authenticate against Keystone. It works but I am unsure exactly how some of the authentication options interact. I started with the configuring glance documentation, but this doesn't actually document any of these…
larsks
  • 43,623
  • 14
  • 121
  • 180
4
votes
5 answers

libvirtError that domain already exists, but virsh list doesn't show it

When I try to launch an instance with OpenStack, I get the following error in nova-compute.log: (nova.rpc): TRACE: libvirtError: operation failed: domain 'instance-0000000a' already exists with uuid 5f81a7d2-1b0f-8c72-4e1e-377c275e9289 However,…
Lorin Hochstein
  • 5,028
  • 15
  • 56
  • 72
4
votes
5 answers

Migration between OpenStack and RackSpace cloud

So I am deploying a OpenStack private cloud in my business. As I understand from research the OpenStack project was created by RackSpace and that their own cloud platform uses OpenStack. So my question is would it be possible to migrate or move…
David Maitland
  • 119
  • 1
  • 8
4
votes
1 answer

Do prometheus metrics have some sort of "freshness" lifetime?

I'm scraping some metrics (openstack cinder volume sizes) every 15 minutes, and the results produce a discontinuous graph, like this: (That's the result of the simple query cinder_volume_size_gb). The metrics "exist" for about five minutes, but…
larsks
  • 43,623
  • 14
  • 121
  • 180
3
votes
0 answers

Openstack Error: No valid host was found. There are not enough hosts available

As a purpose of testing, I am trying to spin up instances of large size, I mean of 8 vCPU's and greater than 20 GB memory, with 50 GB storage. Physical host has 48 GB RAM and 16 CPU. But everytime receives the same error Failed to perform requested…
serverstackqns
  • 764
  • 3
  • 16
  • 42
3
votes
0 answers

Exhausted all hosts available for retrying build failures for instance

Trying to make a proof of concept cloud by following this guide https://www.rdoproject.org/install/packstack/ I managed to get OpenStack installed and I'm able to access the dashboard. When I go to make an instance, I get an error. Error: Failed to…
sfxworks
  • 157
  • 1
  • 8
3
votes
2 answers

Permission denied error when launching instance ("Could not open backing file")

Working with OpenStack, installed from packages available on Debian testing (buster). When I try to launch an instance, it fails after building with this message in nova-compute.log: Could not open backing file: Could not open…
d3query
  • 61
  • 1
  • 6
3
votes
1 answer

Openstack redundant architecture on three servers

I would like to deploy an Openstack architecture on three (super)servers in a way that if one of server is down the Openstack infrastructure is still functionning. What is the best way to deploy this ? Is deploying Control, Network and Compute…
SwissFr
  • 83
  • 6
3
votes
1 answer

Traffic via static route on router does not find its way back

this one bugs me for a couple of days now and I cannot find a solution. Sorry for the strange title. This isn't my main field of work and I currently cannot think of a better title. Some facts: I'm a user on a shared openstack environment I cannot…
malte
  • 316
  • 3
  • 9
3
votes
0 answers

OpenVSwitch with Libvirt

Here's my situation: I'm running CentOS 7 with Openvswitch and Libvirt/Qemu. My domains are configured to use the virtualport type openvswitch, so when I start a VM it creates a port in the ovs bridge. Nothing too complicated. My problem is if I…
user165222
  • 125
  • 3
  • 9
3
votes
1 answer

How to make a linux VM working as a router

I have access to an openstack account where I can create Linux 14.04 VMs. I have created two network interfaces. "public-net" which is connected to the internet through a router "private-net" which is not exposed the internet Now, I have created…
psaha4
  • 31
  • 1
  • 1
  • 3
3
votes
1 answer

How cleanup openstack orphan stuff and manage trash?

We start use Openstack some months ago, and realize that delete projects does not delete project content! we periodically create projects for users groups and delete when are not needed anymore, but there are orphan vms, keypairs and other stuff…
martinkenneth
  • 31
  • 2
1 2
3
…
44 45