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Add support in nomad for supporting raft 3 protocol peers.json #5629

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May 3, 2019
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Add support in nomad for supporting raft 3 protocol peers.json #5629

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7 changes: 6 additions & 1 deletion nomad/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1169,7 +1169,12 @@ func (s *Server) setupRaft() error {
}
} else if _, err := os.Stat(peersFile); err == nil {
s.logger.Info("found peers.json file, recovering Raft configuration...")
configuration, err := raft.ReadPeersJSON(peersFile)
var configuration raft.Configuration
if s.config.RaftConfig.ProtocolVersion < 3 {
configuration, err = raft.ReadPeersJSON(peersFile)
} else {
configuration, err = raft.ReadConfigJSON(peersFile)
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@notnoop notnoop May 3, 2019 •
edited
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Now that I think about it - when running under version 3 - we may need to attempt to read in both formats. I'll double check the raft track - but I suspect at version 2 - it starts writing peers file in new format. Nevermind, this matches consul implementation in https://github.com/hashicorp/consul/pull/3007/files . Thanks!

}
if err != nil {
return fmt.Errorf("recovery failed to parse peers.json: %v", err)
}
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