The document provides an overview of networking in OpenStack with Neutron. It discusses:
- The history of cloud computing and OpenStack.
- An introduction to OpenStack and its core services.
- Neutron architecture and plugins that allow integration with different networking technologies.
- The process of instance creation and how Neutron components work together.
- Tips for troubleshooting common network issues like DHCP failures and connectivity problems.
Best Practice for Deploying Application with HeatEthan Lynn
Long Quan Sha and Ethan Lynn from IBM and Tian Hua Huang from Huawei presented on best practices for Heat resource modules and deployment patterns. They discussed Heat introduction, software deployment options using cloud-init and software deployments, building custom images, and signal transport methods. They also covered creating resource modules based on business concepts to make templates easier to understand and compose common deployment patterns. Finally, they demonstrated resource modules and a load balancing autoscaling group template.
Trabajo de fin de Ciclo Formativo Grado Superior en Administración de Sistemas en red (ASIR/ASIX).
El trabajo consiste en un proyecto de virtualizacion de servidores para dar una alta disponibilidad (HA) mediante el sistema Proxmox. El servicio a dar en cuestión finalmente fue de un servidor proxy y web, por falta de tiempo y problemas con la configuración de Zentyal, fue imposible su instalación.
This document outlines the agenda for a webinar hosted by GLC Networks on Zabbix monitoring. The webinar will include an introduction to GLC Networks and the trainer, a review of prerequisite networking knowledge, an overview of Zabbix monitoring, a live practice session, and a Q&A. Prerequisite topics that will be reviewed include the OSI model, TCP/IP protocols, Ethernet, routing, and network management using FCAPS. The webinar aims to teach participants how to use Zabbix for network monitoring and management.
Kvm performance optimization for ubuntuSim Janghoon
This document discusses various techniques for optimizing KVM performance on Linux systems. It covers CPU and memory optimization through techniques like vCPU pinning, NUMA affinity, transparent huge pages, KSM, and virtio_balloon. For networking, it discusses vhost-net, interrupt handling using MSI/MSI-X, and NAPI. It also covers block device optimization through I/O scheduling, cache mode, and asynchronous I/O. The goal is to provide guidance on configuring these techniques for workloads running in KVM virtual machines.
This document summarizes Lima, an open-source tool for running Linux virtual machines and containers on macOS. Lima provides automatic host filesystem sharing and port forwarding, and integrates with container engines like Docker and container orchestrators like Kubernetes. It uses QEMU or macOS's Virtualization.framework as the hypervisor and supports networking and storage drivers. Templates are provided for common Linux distributions and container tools.
OVN (Open Virtual Network) を用いる事により、OVS (Open vSwitch)が動作する複数のサーバー(Hypervisor/Chassis)を横断する仮想ネットワークを構築する事ができます。
本スライドはOVNを用いた論理ネットワークの構成と設定サンプルのメモとなります。
Using OVN, you can build logical network among multiple servers (Hypervisor/Chassis) running OVS (Open vSwitch).
This slide is describes HOW TO example of OVN configuration to create 2 logical switch connecting 4 VMs running on 2 chassis.
NFV Orchestration for Telcos using OpenStack TackerSridhar Ramaswamy
ETSI MANO NFV Orchestration for Telco Service Providers using OpenStack Tacker project. Showcases integration of Tacker to orchestrate Brocade VNFs like 5600 Virtual Router and Connectem vEPC.
Migrating VMware Infra to KVM Using CloudStack - Nicolas Vazquez - ShapeBlueShapeBlue
In this session, Nicolas presents a new feature, targeted for CloudStack 4.19, which allows administrators to migrate Instances from a VMware environment (external or connected to CloudStack) and import them into a KVM CloudStack-managed environment.
-----------------------------------------
The CloudStack Collaboration Conference 2023 took place on 23-24th November. The conference, arranged by a group of volunteers from the Apache CloudStack Community, took place in the voco hotel, in Porte de Clichy, Paris. It hosted over 350 attendees, with 47 speakers holding technical talks, user stories, new features and integrations presentations and more.
- The document discusses Neutron L3 HA (VRRP) and summarizes a presentation given on the topic.
- Neutron L3 HA uses the VRRP protocol to provide redundancy and failover for virtual routers across multiple network nodes. A heartbeat network is created for each tenant using their tenant network.
- When a router is created, a heartbeat port and interface are created on each L3 agent node using the tenant's heartbeat network to enable communication between the agents for the VRRP implementation.
KVM High Availability Regardless of Storage - Gabriel Brascher, VP of Apache ...ShapeBlue
Having High Availability enabled for KVM Hosts can improve greatly the QoS by handling (fence/recover) a problematic Host as well as re-starting its stopped VMs on healthy hosts. However, there is a limitation on CloudStack HA for KVM; it relies mainly on NFS heartbeat script checks. This Talk illustrates how CloudStack HA works for KVM hosts and it presents a way of improving its implementation in a way that KVM HA works with any storage system pluggable on KVM, not just NFS.
About Gabriel Brasher - https://blogs.apache.org/cloudstack/
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CloudStack European User Group Virtual happened on May 27th. The first CSEUG Virtual proved to be a huge success. It collected people from 23 countries – Germany, the United Kingdom, Switzerland, India, Bulgaria, Greece, Poland, Serbia, Brazil, Chile, Russia, USA, Canada, Japan, France, Uruguay, Korea …
We also had a record number of registrations and attendees for a CloudStack User Group Event. The physical distance was not a stopper for our speakers, who joined the event from 6 different countries.
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About CloudStack: https://cloudstack.apache.org/
2014 OpenStack Summit - Neutron OVS to LinuxBridge MigrationJames Denton
Presentation titled 'Migrating production workloads from OVS to LinuxBridge'. Presented at the Fall 2014 OpenStack summit in Paris, this slide deck introduced the possibility of migrating live workloads from Open vSwitch to LinuxBridge with minimal downtime.
Overview of Distributed Virtual Router (DVR) in Openstack/Neutronvivekkonnect
The document discusses distributed virtual routers (DVR) in OpenStack Neutron. It describes the high-level architecture of DVR, which distributes routing functions from network nodes to compute nodes to improve performance and scalability compared to legacy centralized routing. Key aspects covered include east-west and north-south routing mechanisms, configuration, agent operation modes, database extensions, scheduling, and support for services. Plans are outlined for enhancing DVR in upcoming OpenStack releases.
OpenStack Neutron Havana Overview - Oct 2013Edgar Magana
Presentation about OpenStack Neutron Overview presented during three meet-ups in NYC, Connecticut and Philadelphia during October 2013 by Edgar Magana from PLUMgrid
Interop Tokyo 2014 SDI (Software Defined Infrustructure) ShowCase Seminoar Presentation. The presentation covers Neutron API models (L2/L3 and Advanced Network services), Neutron Icehouse Update and Juno topics.
Quantum - Virtual networks for Openstacksalv_orlando
An overview of Quantum, the soon-to-be default Openstack network service.
These slides introduce Quantum, its design goals, and discusses the API. It also tries to address how quantum relates to Software Defined Networking (SDN)
- OpenStack provides network virtualization and automation capabilities through projects like Neutron, Heat, and plugins like Midonet.
- Neutron evolved networking in OpenStack to allow pluggable networking models beyond the initial Nova networking. It supports overlay technologies and network automation.
- Heat allows you to define infrastructure like servers, networks, and their relationships in templates that can be deployed through the OpenStack API. This provides automation of virtual network deployment.
- Plugins like Midonet provide distributed virtual networking models to improve scalability and performance over overlay approaches like OVS. They also allow automation of physical network configuration.
OpenStack Neutron: What's New In Kilo and a Look Toward Libertymestery
The document summarizes features of OpenStack Neutron networking in the Kilo and Liberty releases. Key points include: Neutron's mission to provide network abstraction; its history starting as Quantum; growth in deployments and rankings; new drivers, plugins, and advanced services in Kilo; plugin decomposition efforts; testing improvements; and new features planned for Liberty like QoS, LBaaS v2, and work on networking for containers and NFV. Looking ahead, the document discusses address scopes, routed networks, BGP announcements, service function chaining, and the OVN virtual networking project.
The document discusses MidoNet, a network virtualization platform that provides a boost to OpenStack Neutron. MidoNet uses a distributed model to avoid single points of failure and bottlenecks seen in the OpenStack OVS plugin. It implements logical L2 and L3 switching, interconnectivity with physical networks, distributed firewalling, load balancing and tunneling using technologies like VxLAN and GRE. MidoNet aligns with Neutron APIs for integration into cloud management software.
The document discusses OpenStack Neutron and Software Defined Networks (SDN). It begins with an agenda for a demonstration of Neutron including creating networks, spawning VMs, testing connectivity, and creating load balancers. It then provides an overview of Neutron components and architecture, including the modular layer 2 plugin. It demonstrates Neutron APIs and network namespaces. It introduces SDN concepts like the control plane and network virtualization. Finally, it discusses how Neutron enforces SDN through plugins like PLUMgrid that implement the functionality on software edges in compute nodes.
This document provides an overview and agenda for a presentation on Red Hat Cloud Infrastructure networking. It discusses challenges with traditional VLAN-based networking and how new technologies like SDN, NFV, and network virtualization are creating exciting opportunities. It covers Red Hat's solutions for hybrid cloud networking which include Red Hat Enterprise Virtualization (RHEV) and Red Hat Enterprise Linux OpenStack Platform with the Neutron networking component. RHEV provides networking functionality within private clouds while Neutron can provide networking for both private and public cloud environments, including integration with RHEV.
OpenStack and OpenDaylight Workshop: ONUG Spring 2014mestery
This was a presentation I gave at the Open Networking Users Group (ONUG), Spring 2014. This talk covers some background on OpenStack and OpenDaylight, walks through Group Based Policy and OpFlex, and ends with a tutorial walk through of installing and using OpenStack with OpenDaylight.
SDN & NFV Introduction - Open Source Data Center NetworkingThomas Graf
This document introduces software defined networking (SDN) and network functions virtualization (NFV) concepts. It discusses challenges with traditional networking and how SDN and NFV address these by decoupling the control and data planes, centralizing network intelligence, and abstracting the underlying network infrastructure. It then provides examples of open source SDN technologies like OpenDaylight, Open vSwitch, and OpenStack that can be used to build programmable software-defined networks and virtualized network functions.
This document introduces software defined networking (SDN) and network functions virtualization (NFV) concepts. It discusses challenges with traditional networking and how SDN and NFV address these by decoupling the control and data planes, making the network programmable through APIs, and virtualizing network functions. It then provides examples of open source SDN platforms like OpenDaylight, Open vSwitch, and OpenStack that enable building virtual networks and service chains.
Building a sdn solution for the deployment of web application stacks in dockerJorge Juan Mendoza
This document discusses building a SDN solution for deploying web application stacks in Docker containers. It proposes developing a wSDN network plugin driver for Docker's libnetwork that implements the Docker plugin API and network driver protocol. This would allow wSDN to manage container networking and provide features like multi-host networking, IP address management, and tenant isolation across multiple data centers. It also discusses Docker's existing networking limitations and outlines requirements for a SDN solution to address Docker's needs for large web application deployments in a multi-tenant environment.
This document provides an overview of OpenStack Neutron, the networking component of OpenStack. It describes Neutron's architecture and components, how it uses Linux networking and Open vSwitch, and how network packets flow through the Neutron distributed virtual router architecture. Key concepts covered include Neutron plugins, agents, GRE tunnels, Linux network namespaces, and east-west vs north-south traffic flows in a DVR configuration.
This presentation was shown at the OpenStack Online Meetup session on August 28, 2014. It is an update to the 2013 sessions, and adds content on Services Plugin, Modular plugins, as well as an Outlook to some Juno features like DVR, HA and IPv6 Support
This document provides an overview of OpenStack, an open source software platform for building private and public clouds. It describes what OpenStack is, its main components (Compute, Image, Dashboard, Identity, Object Store, Block Storage, Network), supported virtualization technologies and drivers, development process, and some example deployments at organizations like CERN, PayPal, and China's Tianhe-2 supercomputer. The document is intended to explain what OpenStack is and how it works at a high level.
MidoNet Overview - OpenStack and SDN integrationAkhilesh Dhawan
The document provides an overview of MidoNet's network virtualization platform. It discusses MidoNet's distributed architecture as an alternative to the single network node approach of the OpenStack Neutron OVS plugin. MidoNet's distributed logical switching, routing, firewalling and load balancing are performed across multiple nodes for high performance, availability and scalability without relying on hardware appliances. The document also demonstrates MidoNet's integration with OpenStack Neutron and its capabilities for overlay networking, distributed logical topologies and load balancing as a service.
This presentations gives basic overview about networking and in depth insights about Openstack Neutron component.
Covers understanding on VLAN,VXLAN,Openstack vSwitch
Open stack networking_101_update_2014-os-meetupsyfauser
This is the latest Update to my OpenStack Networking / Neutron 101 Slides with some more Information and caveats on the new DVR and Gateway HA Features
OpenDaylight Netvirt and Neutron - Mike Kolesnik, Josh Hershberg - OpenStack ...Cloud Native Day Tel Aviv
The document provides an overview and architecture of OpenDaylight Netvirt and its integration with Neutron. It discusses the Neutron/OpenDaylight architectural overview, the new networking_odl v2 architecture and features, and does a deep dive into the OpenDaylight Netvirt networking components and pipeline. It covers topics like external network configuration, the port creation sequence, DHCP ping response, and the OpenDaylight Netvirt service pipeline.
Similar to Networking in Openstack - Neutron 101 (20)
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The advent of social media has revolutionized communication, transforming the way people connect, share, and interact globally. At the forefront of this digital revolution are visionary entrepreneurs who recognized the potential of the internet to foster social connections and create communities. This essay explores the founders of some of the most influential social media platforms, their journeys, and the lasting impact they have made on society.
Mark Zuckerberg, along with his college roommates Eduardo Saverin, Andrew McCollum, Dustin Moskovitz, and Chris Hughes, founded Facebook in 2004. Initially created as a social networking site for Harvard University students, Facebook rapidly expanded to other universities and eventually to the general public. Zuckerberg's vision was to create an online directory that connected people through their real-life social networks.
Twitter, founded in 2006 by Jack Dorsey, Biz Stone, and Evan Williams, brought a new dimension to social media with its microblogging platform. Dorsey envisioned a service that allowed users to share short, real-time updates, limited to 140 characters (now 280). This concise format encouraged rapid sharing of information and fostered a culture of brevity and immediacy.
Kevin Systrom and Mike Krieger co-founded Instagram in 2010, focusing on photo and video sharing. Systrom, who studied photography, wanted to create an app that made mobile photos look professional. The app's unique filters and easy-to-use interface quickly gained popularity, amassing over a million users within two months of its launch.
Instagram's emphasis on visual content has had a significant cultural impact. It has popularized the concept of influencers, giving rise to a new industry where individuals can monetize their popularity and reach. The platform has also revolutionized digital marketing, enabling brands to connect with consumers in more authentic and engaging ways. Acquired by Facebook in 2012, Instagram continues to be a dominant force in social media, shaping trends and cultural norms.
Reid Hoffman founded LinkedIn in 2002 with the goal of creating a professional networking platform. Unlike other social media sites focused on personal connections, LinkedIn was designed to connect professionals, facilitate job searches, and foster business relationships. The platform allows users to create professional profiles, network with colleagues, and share industry insights.
LinkedIn has become an indispensable tool for job seekers, recruiters, and businesses. It has transformed the job market by making it easier to find and connect with potential employers and employees. LinkedIn's influence extends beyond job searches; it has become a hub for professional development, thought leadership, and industry news. Hoffman's vision has significantly impacted how professionals manage their careers and build their networks.
Jan Koum and Brian Acton co-founded WhatsApp in 2009, aiming to create a simple, reliable..
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3. Agenda
• History of cloud computing
• Openstack Introduction
• About Openstack
• Openstack Core Service
• Openstack Neutron
• Neutron Architecture
• Neutron plugin & service
4. The History of cloud computing
Openstack Indonesia Meetup #6
Bandung, 26/10/2019
5. The History of cloud computing
1950
Mainframe
1969
J.C.R.
Licklider
developed the
ARPANET
1970
IBM
released
VMs
1960
John McCarthy,
Douglas Parkhill
“idea of time-
sharing
computing”
1980 - 1990
● Apple launches Macintosh,
Microsoft launches Windows
● FOSS, GNU/Linux
● CERN launches WWW
● Web hosting service provider
began intern infrastructure
2006
AWS launches
S3 & EC2
1999 - 2005 Server Virtualization
- 1999, VMware introduced the x86 virtualization
- 2000, Xen the open-source x86 hypervisor,
- 2005, Intel released two models of Pentium 4 as
the first Intel processors to support VT-x
- 2007, the Kernel-based Virtual Machine (KVM)
hypervisor created included in the Linux kernel
2010
Rackspace Hosting and NASA, launched the
open source cloud initiative OpenStack
Now
Public cloud, big data, machine learning, IOT,
software defined everything and more
10. What is Openstack?
OpenStack is a cloud operating system that
controls large pools of compute, storage,
and networking resources throughout a
datacenter, all managed and provisioned
through APIs with common authentication
mechanisms.
11. Openstack Landscape
OpenStack is broken
up into services to
allow you to plug and
play components
depending on your
needs. The openstack
map gives you an “at
a glance” view of the
openstack landscape
to see where those
services fit and how
they can work
together
12. Network as a service in Openstack
Openstack Indonesia Meetup #6
Bandung, 26/10/2019
13. History of Openstack Networking
● In the first openstack release Austin (Oct 2010) the
networking functionality was hard-coded into Nova
● Networking and compute features could not be updated
independently
● Quantum was added as a separate networking service as
part of the Folsom (Sept 2012) release
● The name of networking project was changed to Neutron
as part Havana (Oct 2013) release
● The name change was due to a trademark conflict
● With Neutron, Networking became modular and could
evolve independently
14. What is Neutron?
● Neutron is networking-as-a-service project in openstack
● Neutron has a server component running on the controller
node
● Neutron has a set of APIs, Plugins, SQL DB and
authentication software
● Neutron has several distributed agent programs
● Neutron enables network devices and technologies to
work together in IaaS environment
16. Basic functions of Neutron
● L2 network
Create L2 network between multiple Nova
Compute
● L3 network
Virtual network routing, external network
connection, SNAT, Floating IP
● DHCP server
DHCP server that assigns IP addresses to
virtual machines
● Metadata
Acts as a proxy for the metadata server
17. Basic functions of Neutron - Cont
● L2 network
Create L2 network between multiple Nova
Compute
● L3 network
Virtual network routing, external network
connection, SNAT, Floating IP
● DHCP server
DHCP server that assigns IP addresses to
virtual machines
● Metadata
Acts as a proxy for the metadata server
18. Type of Network Traffic
● Management
Internal communication
between services
● API
Exposes Openstack APIs
to users of the cloud
● Guest
A network dedicated to
instance traffic
● External
Provides neutron routers
with network access
22. What is ML2 Plugin?
The Modular Layer 2 (ml2) plugin
is a framework allowing
OpenStack Networking to
simultaneously utilize the variety of
layer 2 networking technologies
found in complex real-world data
centers.
23. Neutron ML2 Plugin
● Type Driver
○ Flat
○ VLAN
○ GRE
○ VXLAN
● Mechanism Driver
○ Open vSwitch
○ Linux Bridge
○ L2 Population
○ Specialized (opensource &
vendor)
ML2 Plugin
Type drivers Mechanism drivers
F
L
A
T
V
L
A
N
V
X
L
A
N
G
R
E
OpenvSwitch
LinuxBridge
L2Population
Specialized
25. Neutron ML2 Plugin - Cont
● Type Driver : which tells it what type of L2 technology to use when implementing the networking. For
example, there is an option of using VLANs, VXLAN, or GRE Tunneling
○ Local: A local network is a network that can only be realized on a single host. This is only used in proof-
of-concept or development environments, because just about any other OpenStack environment will
have multiple compute hosts and/or a separate network host
○ Flat: A flat network is a network that does not provide any segmentation options. A traditional L2
ethernet network is a "flat" network. Any servers attached to this network are able to see the same
broadcast traffic and can contact each other without requiring a router. flat networks are often used to
attach Nova servers to an existing L2 network (this is called a "provider network")
○ VLAN: In a VLAN network, tenants are separated because each is assigned to a VLAN. In OpenVSwitch
plugin (or ML2 with OVS driver), OVS will in the virtual switches allocate an internal VLAN for each
tenant
○ GRE: GRE tunnels encapsulate isolated layer 2 network traffic in IP packets that are routed between
compute and networking nodes using the hosts' network connectivity and routing tables
○ VXLAN: gre and vxlan networks are very similar. They are both "overylay" networks that work by
encapsulating network traffic. Like vlan networks, each network you create receives a unique tunnel id
● Mechanism Driver: which specifies what driver to use to implement the technology. You can use the
default Open vSwitch driver (which is what we will cover).
26. Process of Instance creation
1
Sending
API
Request
2
Authentication
request
3
Authentication ACK & validates if
provided data is correct
4
6
5
Update DB
7
Select compute host
8
Update DB
9
Request glance
image
11 Create port (Mac - iP)
10
Glance image
download
12 Notify L2 agent
13 Configure local VLAN and Flows
14 send port up notification (RPC: L2 agent to neutron)
15 port up (RPC: Neutron to NOVA)
16 Instance Booted
L2 Agent
Openstack Nova compute
Openstack glance API
Openstack glance registry
Neutron Server
Neutron L3 Agent
Neutron DHCP agent
28. Debugging network issues
● ip a shows status of all physical and virtual devices
● ovs-vsctl show shows interfaces and bridges in thevirtual switch
● ovs-dpctl show shows datapaths on the switch
● Tcp dump
○ tcpdump -n -i <interface> -w <filename>
○ Set interface to vnet device, instance eth0, bridge device, or host ethernet
device to see where packets are not getting through
○ -i any for all interfaces
● iptables -L to check iptables rules
● ip netns list – lists all known network namespaces
● ip netns exec <namespace id> route -n
○ Shows routing table inside specific namespace
○ Execute arbitrary commands (incl. ssh, ping)
29. Debugging networking issues: DHCP
Scenario: Instance is not getting IP address
Step 1: nova console-log <instance name>, DHCP request sent, no reply received
Step 2: Verify neutron-dhcp-agent is running
Step 3: Check host logs (/var/log/messages and
/var/log/neutron/*)
Step 4: If host is not seeing DHCP traffic: tcpdump -i
all | grep -i dhcp
30. Debugging networking issues:
Access/routingScenario: I can't SSH into an instance
Step 1: Security groups: port 22 TCP & all ICMP
allowed?
Step 2: Is floating IP address routable from client?
● route -n on client
● Verify that public subnet in OpenStack is accessible from client (eg. for local
LAN, that it matches 192.168.0.0/24)
Step 3: Bridges OK?