Most viewed questions in OpenStack

+1 vote
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error: cannot uninstall 'simplejson', not able to install on Ubuntu 18.04,

Hi@akhtar, This error occurs because of pip install ...READ MORE

Mar 20, 2020 in OpenStack by MD
• 95,380 points
6,003 views
0 votes
1 answer

How to Fix OpenStack’s Keystone Authentication Error – HTTP 500?

Hi@akhtar, To avoid this error, you can follow ...READ MORE

Mar 26, 2020 in OpenStack by MD
• 95,380 points
5,343 views
0 votes
1 answer

How to reset error state of a instance into active in OpenStack env?

Hi@akhtar, There are some scenarios where some instances ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
5,273 views
0 votes
1 answer

Instance is not pingable from outside in OpenStack!

Ho@akhtar, There is nothing wrong. But when you ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
3,815 views
0 votes
1 answer

Does AWS uses openstack?

No, AWS does not use any publicly ...READ MORE

Jan 31, 2019 in OpenStack by Ritwik
3,697 views
0 votes
1 answer

ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500)

Hi@akhtar, You can try the bellow given command ...READ MORE

Mar 24, 2020 in OpenStack by MD
• 95,380 points
3,169 views
0 votes
1 answer

What is the difference between AWS and OpenStack?

Hi@akhtar, Both these technologies is a platform of ...READ MORE

Feb 26, 2020 in OpenStack by MD
• 95,380 points
2,567 views
0 votes
1 answer

How to get openstack version using Horizon or Openstack client?

Hi@akhtar, You can get the idea of the ...READ MORE

Sep 23, 2020 in OpenStack by MD
• 95,380 points
2,541 views
0 votes
1 answer
0 votes
1 answer

What is Ingress and Egress rule in OpenStack?

Hi@akhtar, Ingress means when traffic comes inside your ...READ MORE

Mar 3, 2020 in OpenStack by MD
• 95,380 points
2,355 views
0 votes
1 answer

How to create a public network in OpenStack?

Hi@akhtar,  In OpenStack you are the admin of ...READ MORE

Mar 18, 2020 in OpenStack by MD
• 95,380 points
2,353 views
0 votes
2 answers

What is the difference between the Red Hat OpenStack and Red Hat Virtualization, and how can they work together?

Hello, Red Hat OpenStack Platform is a commercially supported ...READ MORE

Jul 18, 2020 in OpenStack by Lily
• 260 points
2,292 views
0 votes
1 answer

fedora Image is booted and active, but what is the username and password to login to the terminal in OpenStack?

Hi@akhtar, When you launched an instance in OpenStack ...READ MORE

Mar 26, 2020 in OpenStack by MD
• 95,380 points
2,206 views
+1 vote
1 answer
0 votes
1 answer

How to create an image in OpenStack?

Hi@akhtar, Actually this is the fun in OpenStack. ...READ MORE

Mar 16, 2020 in OpenStack by MD
• 95,380 points
2,000 views
0 votes
1 answer

How to delete image in OpenStack?

Hi@akhtar, There are two ways to delete an ...READ MORE

Mar 16, 2020 in OpenStack by MD
• 95,380 points
1,965 views
0 votes
1 answer

If OpenStack is free, then why do people use the cloud of other cloud vendors considering they are paid?

Hi@akhtar, Though Openstack is free and open, it has ...READ MORE

Mar 19, 2020 in OpenStack by MD
• 95,380 points
1,840 views
0 votes
1 answer

Difference between openstack and redhat openstack ?

Hi, There are no difference between RedHat OpenStack ...READ MORE

Mar 13, 2020 in OpenStack by MD
• 95,380 points
1,800 views
0 votes
1 answer

Error on exit World dumping… see /opt/stack/logs/worlddump-2018-08-13-070106.txt for details df: ‘/run/user/1000/gvfs’: Permission denied

Hi@akhtar, To avoid this error kindly include the ...READ MORE

Mar 30, 2020 in OpenStack by MD
• 95,380 points
1,726 views
0 votes
1 answer

How do I install OpenStack in RHEL 7/CentOS 7?

Hi@akhtar, Follow the below steps to install OpenStack. IP ...READ MORE

Mar 13, 2020 in OpenStack by MD
• 95,380 points
1,703 views
0 votes
1 answer

ERROR: Quota exceeded for instances: Requested 1, but already used 10 of 10 instances (HTTP 413)

Hi@akhtar,  You should change the default quota limit ...READ MORE

Mar 26, 2020 in OpenStack by MD
• 95,380 points
1,685 views
0 votes
1 answer

How can I do SSH inside my instance in OpenStack?

Hi@akhtar, Yes, there is nothing wrong with your ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
1,606 views
0 votes
1 answer

ERROR: (‘Connection aborted.’, error(111, ‘Connection refused’))

Hi@akhtar, There may be various reason behind this. ...READ MORE

Mar 27, 2020 in OpenStack by MD
• 95,380 points
1,537 views
0 votes
1 answer

Can we install OpenStack inside docker container?

Hi@akhtar, Yes, you can install OpenStack inside docker ...READ MORE

Mar 13, 2020 in OpenStack by MD
• 95,380 points
1,471 views
0 votes
1 answer

Can I use OpenStack Swift instead of Amazon S3?

Hi@akhtar, Yes, You can use Swift service also. ...READ MORE

Mar 19, 2020 in OpenStack by MD
• 95,380 points
1,304 views
0 votes
1 answer

How to create an instance in OpenStack?

Hi@akhtar, When we try to launch an instance ...READ MORE

Mar 17, 2020 in OpenStack by anonymous
• 95,380 points
1,215 views
0 votes
1 answer

openstack Connection to neutron failed.

Hi@akhtar, For the above issue, there may be multiple cause ...READ MORE

Mar 24, 2020 in OpenStack by MD
• 95,380 points
1,135 views
+1 vote
1 answer

Why do we need to disable firewalld and NetworkManager in OpenStack?

Hi@akhtar, By default in Linux there are security ...READ MORE

Mar 13, 2020 in OpenStack by akhtar
• 38,240 points
1,133 views
0 votes
1 answer

Error: neutron-server failed to start and no log was written – neutron dead but pid file exists.

Hi@akhtar, Generally, after installing keystone, glance, nova services, ...READ MORE

Mar 24, 2020 in OpenStack by MD
• 95,380 points
1,037 views
0 votes
1 answer

[Errno 111] Connection refused | Error: INFO nova.wsgi [-] Stopping WSGI server | INFO nova.openstack.common.service [-] Caught SIGTERM, exiting

Hi@akhtar, Whenever you see “Connection refused” error, it’s ...READ MORE

Mar 26, 2020 in OpenStack by MD
• 95,380 points
1,036 views
0 votes
1 answer

Explain what hypervisor is and what type of hypervisor does OpenStack supports?

Hi@akhtar, The Hypervisor is defined as firmware or ...READ MORE

Mar 16, 2020 in OpenStack by MD
• 95,380 points
1,033 views
0 votes
1 answer

How to launch an instance in OpenStack using Terraform?

Hi@akhtar, You need to use openstack_compute_instance_v2 resource to launch ...READ MORE

Jul 5, 2020 in OpenStack by MD
• 95,380 points
884 views
0 votes
2 answers

What is packstack in OpenStack?

Packstack is a utility that uses Puppet ...READ MORE

Apr 5, 2020 in OpenStack by anonymous
867 views
0 votes
1 answer

How to create an image in OpenStack from CLI?

Hi@akhtar, You have to first download one preinstalled ...READ MORE

Jul 6, 2020 in OpenStack by MD
• 95,380 points
865 views
0 votes
1 answer

Failed to attach a volume after detaching the same volume in OpenStack!

Hi@akhtar, You must change the device name on ...READ MORE

Mar 24, 2020 in OpenStack by MD
• 95,380 points
860 views
0 votes
1 answer

What is basic OpenStack Architecture?

Hi@akhtar, Basic Architecture of OpenStack is given below. OpenStack ...READ MORE

Mar 16, 2020 in OpenStack by MD
• 95,380 points
860 views
0 votes
1 answer

Not able to launch an instance in OpenStack?

Hi@akhtar, You might get this error because you ...READ MORE

Mar 20, 2020 in OpenStack by MD
• 95,380 points
816 views
0 votes
1 answer

Error: compute driver option required but not specified.

Hi@akhtar, I guess you didn't add compute_driver property. ...READ MORE

Mar 27, 2020 in OpenStack by MD
• 95,380 points
800 views
0 votes
1 answer

What's the difference between the OpenStack Networking (neutron) and the Legacy Networking (nova-network)?

Hi@akhtar, It depends on your requirement. Let's discuss ...READ MORE

Mar 18, 2020 in OpenStack by MD
• 95,380 points
791 views
0 votes
1 answer

What are the three different components of the modular OpenStack architecture model?

Hi@akhtar, There are three different types of modular OpenStack ...READ MORE

Mar 16, 2020 in OpenStack by MD
• 95,380 points
791 views
0 votes
1 answer

How can I configure docker service inside OpenStack?

Hi@akhtar, The first requirement is to install Docker on ...READ MORE

Mar 23, 2020 in OpenStack by MD
• 95,380 points
777 views
0 votes
1 answer

Can anyone explain, how nova works internally?

Hi@akhtar, Nova is comprised of multiple server process, ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
759 views
0 votes
1 answer

How do I configure Block Storage to use an NFS storage back end in OpenStack?

Hi@akhtar, You can use NFS technology for your ...READ MORE

Mar 19, 2020 in OpenStack by MD
• 95,380 points
729 views
0 votes
1 answer

Error parsing /opt/stack/cinder/setup.cfg: SyntaxError: '<' operator not allowed in environment markers"

Hi@akhtar, I think you are using previous version ...READ MORE

Mar 30, 2020 in OpenStack by MD
• 95,380 points
728 views
0 votes
1 answer

fatal:unable to connect to git.openstack.org: git.openstack.org errno=Network is unreachable

Hi@akhtar, You need to change the GIT_BASE installation ...READ MORE

Sep 23, 2020 in OpenStack by MD
• 95,380 points
690 views
0 votes
1 answer

How to execute command inside network namespace in OpenStack?

Hi@akhtar, Let’s assume you want to execute “ifconfig” command ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
678 views
0 votes
1 answer

How to config Ceph as backend for OpenStack Swift?

Hi@MD, To use Ceph, follow the below given ...READ MORE

Mar 20, 2020 in OpenStack by akhtar
• 38,240 points
670 views
0 votes
1 answer

How To Migrate Running Instances From One Openstack Compute Server To Another Openstack Compute Server ?

Hi@akhtar, You can migrate your instance in OpenStack ...READ MORE

Mar 17, 2020 in OpenStack by MD
• 95,380 points
662 views
0 votes
1 answer

How to assign public IP to OpenStack instances?

You can have a look at this ...READ MORE

Feb 25, 2019 in OpenStack by Priyaj
• 58,100 points
661 views
0 votes
1 answer

Can anyone explain me the Architecture of Glance service in OpenStack?

Hi, OpenStack Glance has a client-server architecture that ...READ MORE

Mar 16, 2020 in OpenStack by akhtar
• 38,240 points
656 views