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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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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 ...
Blair Zajac's user avatar
4 votes
2 answers
17k views

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 ...
Olivier's user avatar
  • 415
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 ...
TieDad's user avatar
  • 274
2 votes
1 answer
2k 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 ...
loewexy's user avatar
  • 33
2 votes
1 answer
131 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 ...
Franck Dernoncourt's user avatar
1 vote
1 answer
596 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 ...
aairey's user avatar
  • 310
1 vote
1 answer
1k 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 ...
csamu's user avatar
  • 21
1 vote
1 answer
148 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?
Franck Dernoncourt's user avatar
0 votes
0 answers
64 views

Instance and restore volume by backup openstack

I try to restore volume with backup_id using rest api and it was successful. But while the restore is in progress, I call the api to create another instance. I don't understand why the instance is not ...
unLimit's user avatar
  • 11
0 votes
1 answer
670 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-...
gotha's user avatar
  • 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 ...
curuba's user avatar
  • 123