When a highly-available router is created, Neutron creates a VRRP group composed of at least two router namespaces by default. The namespaces are spread across multiple hosts running the Neutron L3 agent, and each runs the keepalived service with an automatically generated configuration. Traffic between the routers uses a dedicated network interface, which is discussed in the following section.
Networking of highly available routers
by James Denton
Learning OpenStack Networking - Third Edition
- Title Page
- Copyright and Credits
- Packt Upsell
- Contributors
- Preface
- Introduction to OpenStack Networking
- Installing OpenStack
- System requirements
- Initial network configuration
- Initial steps
- Installing OpenStack
- Installing and configuring the MySQL database server
- Installing and configuring the messaging server
- Installing and configuring memcached
- Installing and configuring the identity service
- Installing Keystone
- Installing and configuring the image service
- Installing and configuring the Compute service
- Installing the OpenStack Dashboard
- Summary
- Installing Neutron
- Virtual Network Infrastructure Using Linux Bridges
- Building a Virtual Switching Infrastructure Using Open vSwitch
- Using the Open vSwitch driver
- Basic OpenvSwitch commands
- Visualizing traffic flow when using Open vSwitch
- Configuring the ML2 networking plugin
- Configuring the Open vSwitch driver and agent
- Summary
- Building Networks with Neutron
- Network management in OpenStack
- Subnet management in OpenStack
- Managing network ports in OpenStack
- Summary
- Attaching Instances to Networks
- Managing Security Groups
- Security groups in OpenStack
- An introduction to iptables
- Working with security groups
- Managing security groups in the CLI
- Creating security groups in the CLI
- Deleting security groups in the CLI
- Listing security groups in the CLI
- Showing the details of a security group in the CLI
- Updating security groups in the CLI
- Creating security group rules in the CLI
- Deleting security group rules in the CLI
- Listing security group rules in the CLI
- Showing the details of a security group rule in the CLI
- Managing security groups in the CLI
- Applying security groups to instances and ports
- Implementing security group rules
- Working with security groups in the dashboard
- Disabling port security
- Allowed address pairs
- Summary
- Role-Based Access Control
- Creating Standalone Routers with Neutron
- Routing traffic in the cloud
- Installing and configuring the Neutron L3 agent
- Router management in the CLI
- Creating routers in the CLI
- Listing routers in the CLI
- Displaying router attributes in the CLI
- Updating router attributes in the CLI
- Working with router interfaces in the CLI
- Listing interfaces attached to routers
- Deleting internal interfaces
- Clearing the gateway interface
- Deleting routers in the CLI
- Network address translation
- Floating IP management
- Demonstrating traffic flow from an instance to the internet
- Setting the foundation
- Creating an external provider network
- Creating a Neutron router
- Attaching the router to an external network
- Testing gateway connectivity
- Creating an internal network
- Attaching the router to the internal network
- Creating instances
- Verifying instance connectivity
- Observing default NAT behavior
- Assigning floating IPs
- Reassigning floating IPs
- Router management in the dashboard
- Summary
- Router Redundancy Using VRRP
- Distributed Virtual Routers
- Load Balancing Traffic to Instances
- Fundamentals of load balancing
- Integrating load balancers into the network
- Installing LBaaS v2
- Load balancer management in the CLI
- Building a load balancer
- Load balancer management in the dashboard
- Summary
- Advanced Networking Topics
- Other Books You May Enjoy
Networking of highly available routers
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