OpenStack (http://openstack.org) 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.

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How to completely remove volumes/instances from OpenStack Kilo database

We're having some troubles deploying Kilo on a system with 3 controllers and 3 computes, through mirantis fuel 7.0. The problems involve creation and attaching of volumes, specially the ones stored ...
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11 views

QCOW2 virtual size lowering

I'm trying to get the virtual size of a qcow2 container down so that it can fit in a openstack flavor with 10GB disk. root@node-10:~# qemu-img info zztop.qcow image: zztop.qcow file format: qcow2 ...
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32 views

Openstack Neutron - Connection Refused when Creating Instance - I'm Out of Ideas

I've setup OpenStack - my first time. I've followed the installation guide (on Ubuntu 14.04) and I believe I've got everything correct. However, when trying to create an instance I get the error: ...
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10 views

Having Trouble Understanding Affinity/Anti-Affinity in OpenStack

I am new to OpenStack and virtualization in general. I believe that if 2 VMs have "affinity" they will reside on the same compute node/hypervisor and if they have "anti-affinity" they will reside on ...
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28 views

unable to install devstack on rhel 7

On RHEL 7 when I try to install devstack I get the following error. +tools/install_pip.sh:install_get_pip:79 sudo -H -E python /opt/stack/devstack/files/get-pip.py -c ...
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2k views

Upload OVA with multiple vmdk's to OpenStack via Glance

I am trying to upload a OVA file to Openstack. The ova file contains 5 files: volume1.vmdk volume2.vmdk volume3.vmdk server.mf server.ovf I uploaded the files with the following command: glance ...
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4k views

openstack installation on ubuntu. Neutron connection issue

I try to configure on a single node openstack by following this tutorial: http://docs.openstack.org/juno/install-guide/install/apt/content/neutron-controller-node.html My installation is done in a ...
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43 views

Nova Computer Service WIll Not Start: libvirtError: XML error: Missing CPU model name

I am having a problem with the Nova compute service not starting. I found tons of other people with this question, but nobody seems to have figured out the problem: systemctl status ...
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16 views

Missing credentials for roles in Heat orchestration on OpenStack?

I am trying out Heat orchestration on OpenStack. When setting up a single instance stack using the configuration below, I am getting this error: Error: ERROR: Missing required credential: roles ...
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3answers
3k views

Cannot connect to Openstack Instance via horizon, but SSH works?

I've got an OpenStack deployment running inside a VM for testing purposes. My setup is as follows: Host Ubuntu x64 with Virtualbox -> Guest Ubuntu x64 with OpenStack -> Ubuntu X64 Server Test ...
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3k views

OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
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15 views

NFS client latency spikes on KVM host machine

We run a small OpenStack environment with KVM hypervisors and shared NFS storage. The problem is: guest KVM machines' CPU usage spikes make NFS client latency grow. For example: same NFS volume ...
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33 views

openstack-ansible stuck on ssh

I'm being brave on deploying OpenStack using Ansible. Finally stage of punching commands except I'm running into ssh error. This seems to be either forked or customized ansible for OpenStack. In the ...
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1answer
96 views

Windows port forwarding, local machine to server

I'm working on Windows 8. I'm trying to connect to an OpenStack cloud which is hosted on a remote server but has a public IP to the API. However, making API calls require calls to additional services ...
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1answer
73 views

s3ql mount seems disconnected

I'm trying to mount a runabove object storage, witch is based on openstack-swift, into my file system, thanks to S3QL. I'm using Ubuntu server 14.04 LTS. So I've mounted my object storage with: $ ...
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48 views

Access Docker port from host's host

I've set up a simple "Hello world" node server on a docker container running on a Kubernetes pod running on Magnum on a virtual machine. I created the container so that its output is forwarded to a ...
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142 views

How to resolve UDP packets being dropped given netstat reporting SndbufErrors

I have a server instance on an OpenStack that at a pretty high load starts loosing UDP packets. I captured all outgoing packets using tcpdump and some of them are missing, even though application logs ...
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141 views

Openstack: What the difference between nova migrate and nova evacuate?

On liberty, I've been searching for a way to "empty" a hypervisor from all its VMs. At the nova client docs, I've found the following commands related to this: nova evacuate : Evacuate server from ...
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26 views

In OpenStack, what is the equivalent an Amazon AWS snapshot?

I'm an Amazon Web Services specialist. (AWS = Amazon's cloud computing platform.) I understand the workflow for taking backups in AWS. What's the equivalent in OpenStack, and is it as robust? Here is ...
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38 views

Multiple DNS records with different networks

So I have Ubuntu 14.04 VMs running in an OpenStack environmnet. The DNS machine has an external IP (10.14.6.3) and an internal IP (192.168.1.3). I have two other machines within the same project [h1] ...
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1answer
40 views

Openstack cluster for parallel execution?

I want to try Ubuntu OpenStack with Metal-as-a-Service (MaaS) for web application purposes. I would be using Apache2, PHP, MySQL and Postgres. If I got 5 or more machines setup and installed all ...
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1answer
38 views

Create a VM image that's OpenStack compatible

I need to create a image of a CentOS VM which would be OpenStack compatible. I'm having trouble determining on Google what the requirements for OpenStack are. Can someone please help? My node is on ...
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1answer
45 views

VMware Integrated OpenStack with a single cluster

I'm currently in the process of deploying VMware Integrated OpenStack for a testing installation which will move into production later. In the current stage we have three ESXi hosts, more will be ...
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2answers
30 views

Alternative ways to detect hung OpenStack/Linux services?

I have noticed on some of my linux servers that a linux service will be hung. The only way I know that it is hung is operations that rely on the service fails and when I restart the service it fails ...
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18 views

Ipsec one way traffic (libreswan / openstack)

'm currently trying to setup an IPSEC tunnel to allow communications between my on site subnet 192.168.1.0/24 and my openstack cloud subnet 192.168.4.0/24. To do so, I have a Debian jessie with ...
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1k views

Object storage: when to choose OpenStack (Swift) vs. Ceph

Swift (OpenStack) and Ceph are both open source projects that implement object storage. What are the factors to consider when trying to decide which one to deploy? Under what scenarios would you ...
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189 views

(centOS) cloud-init not pulling ssh

Trying to build CentOS 6 qcow2 image with OpenStack guide[http://docs.openstack.org/image-guide/content/centos-image.html]. I'm using "cloud-init" instead of the "/etc/rc.d/rc.local" script but I ...
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14 views

OpenStack SingleNode on existing Infrastructure

We currently have one server which isn't needed for anything else, so we wanted to install an openstack single node configuration to get some hands on time. Everything is finde except for the external ...
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1answer
92 views

Should I regard openstack cloud servers as just another type of virtualization?

If I were to set up physical servers for running a business critical website, I would absolutely build redundancy into that environment. I would strive for no single point of failure and as a minimum ...
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5 views

Mirantis Openstack mount storage from another

I have to increase storage size on my openstack. How to mount storage in the OpenStack from another machine or linux outside OpenStack?
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10 views

Does OpenStack (Nova) Support VM migration of LOCAL virtual disk images (not just Cinder)?

Using OpenStack (Nova) KVM instances, we periodically need to perform maintenance on the underlying bare metal. What's the easiest way (via command line or the OpenStack APIs) to clear all the VMs ...
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1answer
56 views

Access service on subdomain in Kubernetes

I have following setup: Private OpenStack Cloud - o̲n̲l̲y̲ Web UI (Horizon) is accessible (API is restricted but maybe I could get access) I have used CoreOS with a setup of ...
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486 views

Can't ssh into Centos vm in Openstack

In Openstack, I can spawn ubuntu and fedora images and ssh into them. But when I am trying the same with Centos image (6.5 or 7), then my key is refused (or even ignored) and I am proposed to use ...
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1answer
2k views

Promiscuous mode in KVM

I have cloud system based on Openstack Icehouse-version. Now I want to test newer version of Openstack (Juno) inside my existing cloud. All hosts and guests use Ubuntu 14.04 as their OS. KVM is ...
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124 views

What's the most reliable way to determine an OpenStack host's own UUID?

I would like to be able to reliably determine the UUID associated with an OpenStack guest from within the guest. A klugey way to do it would be something like: # nova show `hostname` | grep ' id ' | ...
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53 views

How to configure netflow on linux bridges(“docker0” Bridge)

I have Openstack setup which one of the compute node has docker and if I want to monitor the traffic, how to configure netflow on "docker0" bridge/Linux Bridge. I can see the bridge name and ID with ...
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13 views

OpenStack Swift: PID files don't correspond to running processes' PIDs; can't restart services - port already bound

I am running a Docker container with Swift ("Swift all-in-one") on a CentOS 7 host. I noticed that the PIDs in /var/run/swift/*.pid files differ from the actual PIDs running in the system: ...
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2answers
531 views

Joining variables in an openstack heat template

Say I want to name a a resource based on 2 variables so I have something like: heat_template_version: 2013-05-23 description: Create network with parameters: client_code: type: string ...
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68 views

Internal Server Error (HTTP 500) when issuing an authentication token for OpenStack's demo user

Trying to install OpenStack on a VM (host Win10, guest UbuntuServer14.04.3) I'm following the installation guide (docs.openstack.org/liberty/install-guide-ubuntu). When trying to issue the ...
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57 views

Openstack on Ubuntu Server on Xenserver 6.5

I'm trying to install OpenStack on Ubuntu Server 14.04. Ubuntu server is a virtual machine on XenServer 6.5. When I try to install OpenStack: $ sudo openstack-install I get the following error ...
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1answer
58 views

Duplicate host records in Foreman when VM is created by Foreman in OpenStack

I managed to connect Foreman and OpenStack, so that I can create VMs in OpenStack using Foreman web interface. I am using cloud-init, or how Foreman calls it, user data provisioning template in order ...
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1answer
75 views

Difference between cloud computing , grid computing and parallel computing [closed]

There are many definitions out there on the internet , but I am asking here , just because someone may answer it briefly from his/her practical experience with these technologies. How does cloud ...
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2answers
64 views

OpenStack Juno: Is it possible to keep instance on same compute host after resizing?

I have OpenStack Juno setup with 1 controller and 3 compute nodes. I have enabled password less authentication between compute nodes for re-sizing to work. Instance re-sizing is working fine up till ...
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1answer
639 views

Changing XenServer from LVM SR to EXT SR

I'm trying to setup openstack using this page: https://wiki.openstack.org/wiki/XenServer/PostInstall Unfortunately I think when I setup xenserver it setup the local SR as LVM (which the page above ...
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15 views

Error create VM in Glance in centos-7

I'm facing an issue while installing a VM in Glance-Openstack. Here it is [root@parkst ~(keystone)]# virt-install \ --name centos7 \ --ram 2048 \ --disk path=/var/kvm/images/centos7.img,format=qcow2 ...
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51 views

Authentication error in openStack's Horizon dashboard

I'm trying to setup an openStack controller from a VirtualBox VM. My VirtualBox host is Windows 10 and the guest is Ubuntu Server 14. The guest should (someday) function as an openStack controller, ...
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1answer
138 views

OpenStack: Create multiple instances using Horizon?

I have been reading up on deploying an OpenStack cluster in order to create a large number of instances. I haven't been able to find a script/blog/template guide on how to spin up 100+ instances at ...
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2answers
555 views

Openstack: Starting multiple shutoff intances

I am using Openstack Icehouse running on Ubuntu. After rebooting Compute node all instances that were running there will be in shutoff state. Is there way to restart them all at once? Only thing I ...
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1answer
6k views

Vagrant (Virtualbox) host-only multiple node networking issue

I'm trying to use a multi-VM vagrant environment as a testbed for deploying OpenStack, and I've run into a networking problem with trying to communicate from one VM, to a VM-inside-of-a-VM. I have ...