hashicorp/nomad · error

Failed to parse Serf address %q: %v

Error message

Failed to parse Serf address %q: %v

What it means

Same resolution failure as RPC but for the Serf (gossip) bind address: net.ResolveTCPAddr cannot parse/resolve the configured Serf address, so the memberlist configuration cannot be built and server startup aborts.

Source

Thrown at command/agent/agent.go:402

	conf.JobMaxCount = jobMaxCount

	if agentConfig.Server.JobTrackedVersions != nil {
		if *agentConfig.Server.JobTrackedVersions <= 0 {
			return nil, fmt.Errorf("job_tracked_versions must be greater than 0")
		}
		conf.JobTrackedVersions = *agentConfig.Server.JobTrackedVersions
	}

	conf.OIDCIssuer = agentConfig.Server.OIDCIssuer

	// Set up the bind addresses
	rpcAddr, err := net.ResolveTCPAddr("tcp", agentConfig.normalizedAddrs.RPC)
	if err != nil {
		return nil, fmt.Errorf("Failed to parse RPC address %q: %v", agentConfig.normalizedAddrs.RPC, err)
	}
	serfAddr, err := net.ResolveTCPAddr("tcp", agentConfig.normalizedAddrs.Serf)
	if err != nil {
		return nil, fmt.Errorf("Failed to parse Serf address %q: %v", agentConfig.normalizedAddrs.Serf, err)
	}
	conf.RPCAddr.Port = rpcAddr.Port
	conf.RPCAddr.IP = rpcAddr.IP
	conf.SerfConfig.MemberlistConfig.BindPort = serfAddr.Port
	conf.SerfConfig.MemberlistConfig.BindAddr = serfAddr.IP.String()
	conf.SerfConfig.RejoinAfterLeave = agentConfig.Server.RejoinAfterLeave

	// Set up the advertise addresses
	rpcAddr, err = net.ResolveTCPAddr("tcp", agentConfig.AdvertiseAddrs.RPC)
	if err != nil {
		return nil, fmt.Errorf("Failed to parse RPC advertise address %q: %v", agentConfig.AdvertiseAddrs.RPC, err)
	}
	serfAddr, err = net.ResolveTCPAddr("tcp", agentConfig.AdvertiseAddrs.Serf)
	if err != nil {
		return nil, fmt.Errorf("Failed to parse Serf advertise address %q: %v", agentConfig.AdvertiseAddrs.Serf, err)
	}

	// Server address is the serf advertise address and rpc port. This is the

View on GitHub (pinned to 482b49bf1a)

Solutions

1. Correct the Serf bind address in the server config
2. Use a valid IP or resolvable hostname with a port

When it happens

Trigger: Thrown at command/agent/agent.go:402 when the library encounters an invalid state.

Common situations: See trigger scenarios.

Understand the failure class

• Parsing and encoding errors: unexpected token, malformed input — why parsers reject input and how to find the real culprit.

AI-assisted analysis of hashicorp/nomad@482b49bf1a (2026-09-04). Data as JSON: /api/errors/e55a4a8a30d6a9d7. Report an issue: GitHub.