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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.

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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 ...
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  • 405
6 votes
1 answer
6k views

Why does host swap out VMs when there are 16GB of buffer cache and swappiness = 0? [duplicate]

I have a desktop running Ubuntu Quantal using OpenStack Folsom on an Intel i5 with 32 GB RAM and 2 GB swap. I'm running 7 VMs each sized like a EC2 m1.small, so 1.7 GB RAM each. I'm using KVM. As I ...
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3 votes
1 answer
9k views

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 ...
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  • 31
3 votes
4 answers
5k views

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 ...
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  • 264
2 votes
1 answer
818 views

Login to Openstack Horizon Failed

I setup Openstack Horizon using the official Guide https://docs.openstack.org/horizon/ussuri/install/install-ubuntu.html But now I can not login. I checked the credentials with the CLI client and they ...
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  • 33
2 votes
1 answer
120 views

Finding exact amount of used RAM in OpenStack's web interface Horizon

In OpenStack's web interface Horizon I can see: Is there any way to have a more precise figure on how much RAM is being used? The best I have found so far is to look at the page source: but it only ...
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1 vote
1 answer
156 views

OpenStack – Instance not respoding

I have an issue with OpenStack. I'm using OpenStack as a Service and trying to get an instance to respond to ping. Can someone help getting the connection to work? I've tried to ping and SSH to the ...
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  • 21
1 vote
1 answer
550 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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  • 310
1 vote
1 answer
132 views

What does the "1" state mean in OpenStack's web interface Horizon CSV Summary?

In OpenStack's web interface Horizon, under Project Overview we can Download CSV Summary: What does state 1 mean?
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0 votes
1 answer
408 views

openstack rest API start/stop server

I have created server via the web UI of my hosting provider. I want to be able to stop (shutdown) and start this server on demand from another server via their Openstack API. I am using php-...
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  • 135
0 votes
1 answer
2k 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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