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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Understanding snat rule in iptables from openstack

This is less of an OpenStack question and more of an iptables question. Consider the following chain in the NAT table Chain nova-network-POSTROUTING (1 references) pkts bytes target prot opt in ...
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11 views

Difference between various openstack versions? [on hold]

What's the difference between DevStack, HP Helion Open Stack and Mirantis?
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21 views

Failed floating-ips on Devstack installation [on hold]

I am trying to install Devstack (from git master) on a single vagrant based ubuntu running on Virtualbox. Initially I have only a NAT adapter and running stach.sh as stack user using the following ...
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4 views

Openstack essex instance status is going to pause

We have created a VM in openstack but its status is going to PAUSE and from then VM is freezed and doesnot respond to user actions. Please suggest me ideas as early as possible. Thanks for your time.
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1answer
28 views

Why is module os_keypair not returning private_key?

I am deploying to Rackspace Cloud with the OpenStack ansible module. I am facing an issue with the SSH keypair creation. It creates the public key, and installs it on the host. However I can see that ...
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21 views

OpenStack instances power off by itself

Already asked this over on ask.openstack.org but I figured it would get more views here too. I am running OpenStack Mitaka on a 5 node cluster, 1 controller/network node and 4 compute nodes. I am ...
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13 views

Where to find list of deprecated settings for nova? Juno

Here is the scheduler_default_filters setting I am using my /etc/nova/nova.conf. I think some of these settings are obsolete/deprecated in Juno ... scheduler_default_filters = ...
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20 views

Dockerize Openstack Image for Local Development

In OpenStack I have production images configured with PostgreSQL and some corporate environment specific network configurations. The images are in the QCOW2 Format. I would like the developers to be ...
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99 views

How to install designate and trove on OpenStack Kilo (Ubuntu 14.04) deployed with Mirantis Fuel 7.0

We've set a basic environment using Mirantis Fuel with 3 controller/storage nodes and 3 computes. We've used Fuel to install the base system and then we added some extra components like FWaaS plugin ...
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9 views

How can I use instance discovery with openStack?

I'd like to use a service like TADDM to discover OpenStack instances. Unfortunately, this is tricky since OpenStack instances use private IPs. What are ways I can use to quickly distribute public IPs ...
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19 views

Network issue in Compute node instance

We have two servers with Openstack Essex. Controller node a. nova-compute, nova-network, nova-volume, nova-consoleauth, nova-cert, nova-scheduler installed Compute node a. nova-compute and nova-...
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74 views

httpd service refuse to start after packstack installation

Centos 7 Openstack single machine setup After packstack installation I did reboot my computer and after it turned on, httpd service failed to start httpd.service - The Apache HTTP Server Loaded: ...
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62 views

iscsiadm: No portal found

I am receiving an error saying "Trace nova Stderr:'iscsiadm:No portal found. \n'. Trace nova Command: sudo nova-rootwrap iscsiadm -m node -T iqn.2010-10.org.openstack:volume-0000003 -p :3260 --...
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70 views

OpenStack Juno Live-Migration never completes for instances with high load and size >64GB

I have run into situations where live migrations never seem to complete or error out. Here is how I have been able to reproduce the problem. Here is the instance I am migrating: [root@osc1-mgmt-001 ...
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92 views

OpenStack Mitaka - Instances have no net connectivity

I've followed the Mitaka setup guide for my first OpenStack cloud. This all went ok (2nd time around!), however i'm now having issues with networking. The instance launches ok, and it's assigned an ...
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23 views

Converting VMs from XenServer to OpenStack (KVM)

I'm looking at moving our XenServer cluster (150 VMs) to OpenStack on KVM. After extensive reading it looks like virt-v2v will do this. However I'm confused about it's usage. I was going to copy ...
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23 views

Setting dnsmasq_config_file with Puppet managed OpenStack installation

Our OpenStack installation is rolled out with Puppet. We use the excellent puppetlabs-openstack module for that. Due to the slow turnover cycles we are still stuck with version 5.0.2, right now we ...
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1answer
83 views

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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1answer
25 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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11 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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179 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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1answer
80 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 /opt/stack/devstack/tools/cap-...
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1answer
53 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 openstack-nova-...
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1answer
80 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 [u'...
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21 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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50 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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60 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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242 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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46 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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44 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
42 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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535 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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1answer
63 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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31 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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15 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
41 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
99 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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6 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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14 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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63 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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14 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: root@...
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79 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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62 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
115 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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1answer
89 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
73 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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19 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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72 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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24 views

Connect Open vSwitch to interface in a VM OpenStack

I have single VM in OpenStack, with a single interface eth0. I want that all the traffic that goes in and out is passed trough a Open vSwitch (where I will have some flow rules). I did the following: ...
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141 views

Soft Lockup - CPU Stuck qemu-system-x86

I have a system running: * openstack icehouse * Linux 3.13.0-48-generic #80-Ubuntu SMP Thu Mar 12 11:16:15 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux(Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16) Suddenly ...