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Questions tagged [openstack-neutron]

Neutron is an OpenStack project to provide "networking as a service" between interface devices.

Neutron enables Network-Connectivity-as-a-Service for other services, such as . Provides an API for users to define networks and the attachments into them. Has a pluggable architecture that supports many popular networking vendors and technologies.

Main plugins included in neutron are

Open vSwitch Plugin

Cisco UCS/Nexus Plugin

Cisco Nexus1000v Plugin

Linux Bridge Plugin

Modular Layer 2 Plugin

296 questions
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Can't ping/ssh Openstack VM internal instance from controller

I have a working single-node centos Openstack instance which is working in most regards nicely, except for one problem which has me tearing my hair out. The problem is this: when I create new VM instances, I am unable to ping/ssh them from the…
user1943819
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What is the difference between provider network and self-service network in OpenStack?

I can't understand what is the difference between these types of networks. When I reed about it: http://docs.openstack.org/mitaka/install-guide-rdo/neutron-controller-install.html I just see that self-service network it is provider network but…
Oleksandr
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liberty openstack ubuntu install guide fails to ping router

I followed the install guide for liberty launching instances on private networks (option 2) but I am unable to ping the virtual router neutron router-port-list…
Angelinux
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How to Check whether dhcp-server exists for that subnet before creating a subnet

I am stuck with a neutron issue. I have two nodes namely controller and compute neutron component is installed in controller node. Restarted DHCP, L3 Agent services. we are using namespaces for dhcp agent. Created a private network by specifying…
user3492421
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Openstack in hosted environment

I am trying to configure OpenStack in a hosted environment where I don't have access to network equipment. That's why I want to use GRE tunnels to create an internal OpenStack network. The environment The host is Softlayer where the servers provided…
Maciej Malesa
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ERROR: Socket /var/run/openvswitch/ovnnb_db.sock not found

I have read this link about the problem mentioned in topic, but because it is patched in new version of openstack, it does not work. Any ideas guys? Cheers
samsam114
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Curl (56) Recv failure: Connection reset by peer [TCP Retransmission]

Network topology PC1: Env: Centos 8.2 Linux compute-31 4.18.0-240.22.1.el8_3.x86_64 #1 SMP Thu Apr 8 19:01:30 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux IP: 10.0.0.31 ping is ok [root@compute-31 ~]# ping 10.10.10.82 PING 10.10.10.82 (10.10.10.82)…
JefferyLuo
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Error: Build of instance c1192e0a-e815-4f4e-b995-05d0c6bd2dfc aborted: Failed to allocate the network(s), not rescheduling?

`enter code here's get this error when building a machine in OpenStack I checked Nova service logs and received this error Error: Build of instance c1192e0a-e815-4f4e-b995-05d0c6bd2dfc aborted: Failed to allocate the network(s), not rescheduling
Reza Bojnordi
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Neutron error: oslo_privsep.daemon.FailedToDropPrivileges: privsep helper command exited non-zero (1

during the configuration of Neutron (OpenStack Stein), I found this error oslo_privsep.daemon.FailedToDropPrivileges: privsep helper command exited non-zero (1) All services are running but this error still appears as you can see…
jbacelo
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Openstack Multi-region deployment

I've been trying to deploy Openstack on a multi region setup, with two nodes, one for RegionOne and one for RegionTwo, with the Horizon and Keystone services shared (they both are hosted in RegionOne). I'm using Ubuntu server Bionic on virtualbox,…
Chiara S
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Which security rule should be used to restrict communication between two instances in the same network in Openstack?

I've installed Openstack Queens v. in my CentOS VM. I'm trying to restrict the communication between two instances in the same network. I know that a security rule can do it. Can any one tell me which rule should be used or we need to create a new…
Vamsee Bond
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404: PecanNotFound OpenStack Neutron

I am seeing this error during a neutron server restart, I am not using pecan at all, so I would like to get rid of this warning, any idea how to solve it? I am running queens release timestamp id WARNING neutron.pecan_wsgi.controllers.root…
Iago Santos
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Use more than one physical interface on devstack ocata

I have a barebones PC with 6 physical interfaces to 'play' around with devstack. I'd like to deploy VMs on it and connect them to different Ethernet interfaces. Currently, I'm only able to use the interface associated to the br-ex bridge. I've tried…
Pedro A. Aranda
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"Error: No valid host was found. There are not enough hosts available"+Newton

I have installed openstack (Newton release) on Ubuntu 16.04 (all in one). every service is running well, but when I try to launch an instance, an error occurs: Error: Failed to perform requested operation on instance "test1", the instance has an…
Fatemeh Abdollahei
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Why does “Watchdog: BUG: Soft lockup CPU” errors occur when running openstack containers in docker.

I just deployed openstack using kolla and kolla-ansible stable/pike version. I deployed on one control node and one compute node. It worked but while I try to use the horizon dashboard, the control node is very slow and locks up and the terminal…
Joey Corkey
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