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 backends.

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Openstack Services Status Ubuntu

i installed openstack on Ubuntu server LTS 20.4 . in centos 7.9 usually i install a package openstack-utils which let me run openstack-status and i can see all services status at same time. how should ...
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Can't boot arm64 cloud image with qemu

I first downloaded ubuntu-22.04-server-cloudimg-arm64.img, then I started it with qemu qemu-system-aarch64 -m 2G -M virt -cpu max -bios /usr/share/qemu-efi-aarch64/QEMU_EFI.fd -drive if=none,file=...
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Installing Openstack using kolla Ansible : Internal Server Error

I am installing Openstack (all-in-one) on a ubuntu 20.04 vm with 16GB Ram, 4 vCPUs and 40GB memory. I am following this tutorial. After all steps carried out succesfully, the last one for actual ...
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why ping result get request timed out intermittently

With the same subnet in openstack and on the same hypervisor, only one IP(*.*.65.250) get "Request timed out."(as the Chinese say: "请求超时") by ping intermittently which in the ...
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Most Stable/efficient method for OpenStack Deployment using Debain

I was wondering witch method to use for deploy openstack I read guides of openstack but there is no focusing on Debian. so what it's most stable method to deploy openstack on Debian? Thanks
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start rabbitmq-server ERROR

I tried starting rabbitmq-server when installing rabbitmq on Ubuntu and I get the following Error: Job for rabbitmq-server.service failed because the control process exited with error code. See "...
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openstack nova compute vm delete operation

We are trying to troubleshoot the stuck vm issue in openstack nova. sometimes when we try to delete VM, it gets in deleting state in DB and never get deleted from compute node.we are suspecting it has ...
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-4 votes
2 answers
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Linux as a router to forward

How to make an OpenStack instance to forward route to another Linux machine which is not OpenStack instance but in the same LAN? PC_A has 192.168.1.133/27. PC_B has 192.168.1.140/27. PC_A has 10.26....
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OpenStack machine mounting first volume as /dev/vdc

I have a virtual machine in an internal OpenStack environment. Today, it started misbehaving when a volume is removed and re-attached. In the following, the first two are correct, but the third is not:...
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rsyslog not sending nova, neutron logs from openstack controller

I have my rsyslog server setup and I want to collect logs from my OpenStack controller. I have followed these steps, https://wiki.openstack.org/wiki/OpsGuide-Logging-RSysLog but I am not able to see ...
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1k views

qemu-img compress image from stdin / gunzip

because of low space i would like to gunzip a zipped "glance image-download" and compress it with qemu-img to a "qcow2" formatted file. tried this: gunzip -c file.gz |qemu-img convert -f raw /dev/...
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PXE boot a computer using Ironic Bifrost

I am using Openstack Ironic standalone using Bifrost. I followed this link link https://docs.openstack.org/bifrost/latest/install/index.html#introduction to install Bifrost on CentOS system in ...
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1 answer
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OpenStack Cloud Instance can't get metadata

I'm actually setting up a private cloud for my company with OpenStack (Stein). I followed the tutorial from the official website and everything seems to work well... except getting metadata from ...
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How to expand the root volume after attach new volume?

I create new virtual machine in OpenStack Project. After I want to add size free space in VM. I added new Volume and attached to VM. After start VM I tryed to check status HDD. fdisk -l Disk /dev/...
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Difference between openstack keypair create and ssh-keygen

I want to understand how exactly does the openstack keypair create command differs from ssh-keygen(both create a keypair ,right?). Also, what exactly happens when I provide a public key to the ...
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1 answer
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Can the timeout of conjure-up/juju operations be configured?

I'm trying to install OpenStack with NovaLXD on localhost via conjure-up and it keeps timing out... (at home for dev/learning purposes) My hardware is ancient... it's an old Dell poweredge 2850 (...
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Partitioning existing LVM physical volume and Create new LVM physical volume

My goal is to create new LVM physical volume named sda3. I installed the Centos 7.5 in such partitioning: Device Boot Start End Blocks Id System /dev/sda1 * 2048 ...
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Nested Virtualization [closed]

I want to deploy openstack with nested virtualization enabled. Here is the scenario, on physical machine (Ubuntu 16.04) I have 2 VMs running, 1. kvm01 and, 2. cmp001 Kvm01: has 7 VMs up and running ...
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openstack modify libvirt xml configuration

I am experimenting some options and trying to ad following option in openstack running instance. <driver name='vhost' queues='5' rx_queue_size='512' tx_queue_size='512'/> I did following steps ...
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How to ssh into CentOS instance on Openstack with pregenerated PEM private key using Cygwin

I am missing something simple here. Can someone help determine why I can't ssh into this remote CentOS instance on Openstack using the pre-generated private key. I created a public/private key in ...
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1 answer
732 views

openstack live migration issue

I have two compute node1 and node2 with Ceph shared storage (RBD), I am trying to setup live migration but its failing with following error, not sure what is wrong. I am using Openstack pike 16.0.16 ...
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Creating VLAN Bridge for KVM Virtual Machines

Original Question: I need to run a KVM based VM with a few VLANs going through a single vNIC. How to create a bridge on a Ubuntu/CentOS host machine that can handle VLAN tagged traffic (i.e. ...
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Script fails and says unexpected token >' [duplicate]

While running the following script, I get the errors. How to solve this? 1 #!/bin/bash 2 # Show colored output if running interactively 3 if [ -t 1 ] ; then 4 export ANSIBLE_FORCE_COLOR=...
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2 answers
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Permission denied (publickey) on ubuntu 16.04

$ ssh mykey.pem ubuntu@10.128.2.7 -v OpenSSH_7.3p1, OpenSSL 1.0.2j 26 Sep 2016 debug1: Reading configuration data /c/Users/works/.ssh/config debug1: Reading configuration data /etc/ssh/ssh_config ...
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3 votes
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How I can improve openstack swift replication speed?

I am using openstack object storage in my production, and faced with big problem - low replication speed. I have cluster with replication factor 3, with 3 zones and 25 hdds per zone. My container ...
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1 answer
856 views

Passwordless SSH using pem file or ppk file not working anymore

I have an instance on OpenStack installed with CentOS-7-x86_64 that is accessed using putty, the pem file which was converted to ppk file using the puttygen, worked fine and provided passwordless ...
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3 votes
2 answers
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Error during installation over pip

I am tring to install openstack client on Centos 7 virtual machines over pip via this command: pip install python-openstackclient At the end of installation I receive this error: Command "/usr/bin/...
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1 vote
1 answer
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"Network unreachable" after adding ovs bridge

I'm deploying openstack cloud on centos 7 and during installation, I'd added an external bridge to one of my interfaces that is connected to the internet by using these commands: $ ovs-vsctl add-br ...
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2 votes
1 answer
6k views

traceroute have error bind: Cannot assign requested address

I have the below error: [root@~]# traceroute -s 'publicIP' 8.8.8.8 traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets **bind: Cannot assign requested address** But when i did not enter ...
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yumdownloder option required for only 64bit packages

What would be the command if I want to download only 64bit rpm of the packages via the yumdownloader command? Example : I have 64bit arch centos6.5 and i want to upgrade some of the packages thourgh ...
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6 votes
2 answers
11k views

Script in cron cannot find command

I have a script which dumps out database and uploads the SQL file to Swift. I've run into the issue where the script runs fine in terminal but fails in cron. A bit of debugging and I found that the ...
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1 vote
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759 views

creating multiple server & attaching volume in openstack

i need to deploy multiple server using Heat template in openstack mitaka, and also this server should have newly created cinder volumes and they should get attached at server creation time, i.e one ...
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0 votes
1 answer
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Why does /proc/cpuinfo list 0 cores in processor 1 on Openstack?

I create a VM with Openstack Ocata. When I use the command cat /proc/cpuinfo, it shows messages: processor : 0 physical id : 0 siblings : 1 core id : 0 cpu cores : 1 processor : 1 physical id : 0 ...
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2 answers
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sed? - Insert line after a string with special characters to Neutron service

I am attempting to write a bash script that will insert a string after matching on a string in /usr/lib/systemd/system/neutron-server.service I have been able to do this on other files easily as I ...
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0 votes
1 answer
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How can I config the floating IP to a public ip in OpenStack?

In the dashboard: Under the Project -> Compute -> Instances: I created a instance, named test02, and its IP address is 10.0.0.7 and the floating IP is 172.24.4.12. I want to know can I config the ...
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Error: Package: python-netifaces-0.10.4-1.el7.x86_64 (openstack-ocata) Requires: python(abi) = 2.7 when I install the `packstack`

When I install the packstack: sudo yum install -y openstack-packstack I get the below errors: Error: Package: python-netifaces-0.10.4-1.el7.x86_64 (openstack-ocata) Requires: python(abi) ...
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Use a different NIC with packstack

I'm installing openstack in VirtualBox, The VM has two NICs, a NAT one and a Host-Only one. Looks like packstack automatically selected the NAT one, which is unwanted. 10.0.2.15_prescript.pp: ...
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Extend OpenStack Volume

I am trying to extend a Volume in an OpenStack instance abd checked the docs from openstack . But there is no extending documented. Managing with lvm is not really possible. Do you have an idea how ...
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1 answer
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Multiple puppetmaster behind load balancer

We build two puppet master on openstack cloud and put them behind LBaasV2 (haproxy) load balancer, also we have separate puppetDB and PuppetCA server to handle certificate. |-...
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1 vote
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Virtual Lab on a server. What hypervisor? Proxmox, OpenStack, ESXi?

I would like to run a virtual lab to show a piece of software - imagine 10 students, each using 3 VMs (somehow students shouldn't be able to touch each other's machines). It's going to be a small ...
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2 votes
0 answers
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How to create an OVS Bridge in centos (Openstack) ipv6 interface

I am trying to create an ovs bridge network for openstack(packstack) . I am encountering an issue as per documentation i need to create interface as shown below. /etc/sysconfig/network-scripts/ifcfg-...
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2 votes
3 answers
5k views

ethtool with virtual NIC shows nothing - print the current settings of the NIC in OpenStack VM

On a OpenStack VM I see only # ethtool eth0 Settings for eth0: Link detected: yes On RHEV VM the same small output. Tried it on Ubuntu and RHEL7 VM. I wish to see something like (the speed ...
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1 vote
1 answer
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Multiple VLAN range on Liberty Openstack

We have 3 VLAN (10,20 & 30) in our physical network on Liberty so how do i define three VLAN set in my configuration should i do following in ml2 plugin? is following method is right? /etc/...
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1 vote
2 answers
191 views

Live migration of VMs in openstack

Is it possible to live migrate a virtual machine running on KVM host to Hyper-V based host in open-stack?
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Ubuntu 14.04 Openstack single, error: Top-level container OS did not initialize correctly

I install fresh copy of Ubuntu server 14.04 x64 on my laptop ram:16GB, i7 quadcore, ssd:1TB. etc. I follow this instruction to install openstack as single on my laptop ubuntu user have sudo ...
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port forwarding VBox VMs [closed]

I have an Ubuntu Server 14.04 running VirtualBox with some machines. These machines are OpenStack Fuel installed and I cannot change the NIC interfaces infra ( two hostonly and one NAT ). One of ...
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1 answer
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Can't see floating IP within Virtual machine

When we spin a VM in cloud based environment ( in my case , open-stack) , and assign it a floating ip to access it from outside , we can't see that IP with standard Linux commands for networking, ...
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3 votes
2 answers
4k views

Authentication error in openstack with new domain

My openstack was working fine with the default domain. Today I created another domain domainTwo using openstack create doamin domainTwo created a new project domainTwoProject openstack project ...
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Remove devstack dependencies Ununtu 14.04 (32 Bit Dell Lattitude 5500)

I installed devstack in my old laptop. After installation when I try to access OpenStack, my laptop became very slow. Then I realized, that laptop had only 2 GB RAM. I ran unstack.sh and delete ...
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  • 215
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Nova instance missing after reboot

I had an instance today which appeared to be stuck booting, I did a hard reboot and then the hypervisor lost power. After turning back on the instance was still in hard reboot, however it appears ...
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