Advertise Raft on the Fully Qualified Domain Name

Distributed Services with Go — by Travis Jeffery (77 / 84)

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Currently, we configure Raft’s address as the transport’s local address, and the server will advertise its address as ::8400. We want to use the fully qualified domain name instead so the node will properly advertise itself to its cluster and to its clients.

In internal/log/config.go, change your Config to this:

DeployLocally/internal/log/config.go

​ ​type​ Config ​struct​ {
​         Raft ​struct​ {
​                 raft.Config
»                BindAddr ​string​
​                 StreamLayer *StreamLayer
​                 Bootstrap   ​bool​
​         }
​         Segment ​struct​ {
​                 MaxStoreBytes ​uint64​
​                 MaxIndexBytes ​uint64​
​                 InitialOffset ​uint64​
​         }
​ }

Change your DistributedLog’s bootstrap code to use the configured bind address:

DeployLocally/internal/log/distributed.go

​ ​if​ l.config.Raft.Bootstrap && !hasState {
​         config := raft.Configuration{
​                 Servers: []raft.Server{{
​                         ID:      config.LocalID,
»                        Address: raft.ServerAddress(l.config.Raft.BindAddr),
​                 }},
​         }
​         err = l.raft.BootstrapCluster(config).Error()…