In the Juno release of OpenStack, the Neutron community introduced two methods of attaining high availability in routing. This chapter focuses on a method that uses the Virtual Routing Redundancy Protocol, also known as VRRP, to implement redundancy between two or more Neutron routers. High availability using distributed virtual routers, otherwise known as DVR, will be discussed in Chapter 12, Distributed Virtual Routers.
In the previous chapter, we explored the concept of standalone routers and how they allow users to route traffic between project networks and external networks as well as provide network address translation for instances managed by the user. In this chapter, we will cover the following topics:
- High availability of routing using keepalived and VRRP
- Installing and configuring additional L3 agents
- Demonstrating the creation and management...