Trending questions in OpenStack

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1 answer

How to call invocable method from flow ?

To call an invocable method from a ...READ MORE

Nov 7 in OpenStack by Deepa
 • 125 views
0 votes
0 answers

Why do I see the error "INSUFFICIENT_ACCESS_ON_CROSS_REFERENCE_ENTITY"?

’m getting the error 'INSUFFICIENT_ACCESS_ON_CROSS_REFERENCE_ENTITY' when trying ...READ MORE

Oct 27 in OpenStack by Priyanka
 • 4,500 points • 182 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
 • 95,460 points • 5,032 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
 • 95,460 points • 10,560 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
 • 95,460 points • 1,775 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
 • 95,460 points • 9,729 views
+1 vote
1 answer

ERROR (Forbidden): Policy doesn't allow os_compute_api:os-services to be performed. (HTTP 403) (Request-ID: req-ee295dfe-b3c7-440c-911d-10043355a606)

Hi@akhtar, You need to use an admin account ...READ MORE

Jul 3, 2020 in OpenStack by MD
 • 95,460 points • 3,632 views
+1 vote
1 answer

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
 • 95,460 points • 8,142 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
 • 95,460 points • 2,094 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 • 4,054 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
 • 95,460 points • 6,499 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
 • 95,460 points • 1,716 views
0 votes
1 answer

How to connect OpenStack Cloud with Terraform?

Hi@akhtar, To connect any Cloud, Terraform has a ...READ MORE

Jul 5, 2020 in OpenStack by MD
 • 95,460 points • 1,108 views
0 votes
1 answer

How to launch one instance in OpenStack from CLI?

Hi@akhtar, You need to login to your OpenStack ...READ MORE

Jul 5, 2020 in OpenStack by MD
 • 95,460 points • 1,101 views
0 votes
1 answer

How to login with demo account in OpenStack from CLI?

Hi@akhtar, Packstack program will generate to file when ...READ MORE

Jul 3, 2020 in OpenStack by MD
 • 95,460 points • 986 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
 • 95,460 points • 5,172 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
 • 95,460 points • 4,633 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
 • 95,460 points • 4,394 views
0 votes
1 answer

ERROR: Cannot 'reboot' instance e54b5d26-2918-4ab6-8210-94e827bf2a94 while it is in vm_state error (HTTP 409) (Request-ID: req-88efe1d4-37c3-409e-89a9-844f537e51eb)

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

Mar 24, 2020 in OpenStack by MD
 • 95,460 points • 4,019 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
 • 95,460 points • 3,681 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
 • 95,460 points • 3,924 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
 • 95,460 points • 3,535 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
 • 95,460 points • 2,971 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
 • 95,460 points • 3,052 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
 • 95,460 points • 2,539 views
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
 • 95,460 points • 3,575 views
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
 • 95,460 points • 2,929 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
 • 95,460 points • 2,434 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
 • 95,460 points • 2,689 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
 • 95,460 points • 2,784 views
0 votes
1 answer

Why AWS or OpenStack launch instances so fast?

Hi@akhtar, Actually AWS or Openstack uses pre-installed image. ...READ MORE

Jun 4, 2020 in OpenStack by MD
 • 95,460 points • 926 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
 • 95,460 points • 2,735 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
 • 38,260 points • 2,692 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
 • 95,460 points • 2,083 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
 • 95,460 points • 2,423 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
 • 95,460 points • 1,949 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
 • 95,460 points • 2,397 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
 • 95,460 points • 1,995 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
 • 95,460 points • 1,477 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
 • 95,460 points • 2,064 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
 • 95,460 points • 3,220 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
 • 95,460 points • 2,033 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
 • 1,624 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
 • 95,460 points • 1,743 views
0 votes
1 answer

"Failed to schedule_prep_resize: No valid host was found." when trying to resize an instance

Hi@akhtar, To avoid this error you have to ...READ MORE

Mar 30, 2020 in OpenStack by MD
 • 95,460 points • 1,300 views
0 votes
1 answer

TRACE nova.openstack.common.threadgroup OSError: [Errno 2] No such file or directory: ‘/usr/lib/python2.6/site-packages/instances’

Hi@akhtar, As the error shows No such file or ...READ MORE

Mar 27, 2020 in OpenStack by MD
 • 95,460 points • 1,393 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
 • 95,460 points • 1,767 views
0 votes
1 answer

openstack-nova-metadata-api dead but pid file exists.

Hi@akhtar, Surprisingly, the service ‘openstack-nova-metadata-api‘ was already running. ...READ MORE

Mar 27, 2020 in OpenStack by MD
 • 95,460 points • 1,359 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
 • 95,460 points • 1,751 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
 • 95,460 points • 1,423 views
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