DNS resolution failure for [NodeAddrDNS "todo.defaultDnsDomain.com" Nothing]: [NameError]

hi,when i build Cardano SL

$ nix-build -A cardano-sl-node-static --out-link master

and start by

$ ./master/bin/cardano-node-simple --system-start 1495462345

i got this output

[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:47.39 UTC] using configurations: ConfigurationOptions {cfoFilePath = “lib/configuration.yaml”, cfoKey = “default”, cfoSystemStart = Just 1495462345000000, cfoSeed = Nothing}
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:48.07 UTC] System start time is 1495462345000000
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:48.07 UTC] Current time is 1550043648078844
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:48.07 UTC] initalizing user secret
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:48.20 UTC] Allocating node resources…
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:48.20 UTC] DB path not specified, defaulting to “node-db”
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:48.69 UTC] Opened DB, created some futures, going to run InitMode
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Initialized DB
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Initialized block/epoch consolidation
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created EKG store
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Allocating node context…
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Got logger config
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created a StateLock
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created StateLock metrics
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created LRC sync
[cardano-sl.consolidate:Info:ThreadId 16] [2019-02-13 07:40:49.34 UTC] current tip epoch is 0, 0 epochs consolidated
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created slotting variable
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created slotting context
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Filled slotting future
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created UserPublic variable
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created UserSecret variable
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created block retrieval queue, recovery and progress headers
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created last known header and shutdown flag variables
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created context for update
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created context for ssc
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created context for slog
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created peersVar
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Dequeue policy to relay: Dequeue {deqRateLimit = MaxMsgPerSec 1, deqMaxInFlight = MaxInFlight 2}
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Finished allocating node context!
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Filled LRC Context future
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created DLG var
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Loading SSC global state
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Loaded SSC state: certificates from: [df4901e8f6abd96a, f83e9e0270abcc74, c96ac1e118c0d384, 81713ef44a946310]

[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Created SSC var
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] JSON configuration initialized
[cardano-sl.production:Debug:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Finished allocating node resources!
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:49.34 UTC] bracketWithLogging:before `NodeResources’
[cardano-sl.production:warning:ThreadId 4] [2019-02-13 07:40:49.34 UTC] notifyReady failed to notify systemd.
[cardano-sl.production:Info:ThreadId 4] [2019-02-13 07:40:49.34 UTC] Wallet is disabled, because software is built w/o it
[cardano-sl.diffusion:Debug:ThreadId 18] [2019-02-13 07:40:49.34 UTC] startNode, we are NodeId 4d41d560-102e-4bc6-8e3f-9c3819f37b71
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.34 UTC] Built with: Compile time info: git revision ‘d35bfbf4789a6be7aad604e69e752a5f72558229’
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.34 UTC] Application: cardano-sl:0, last known block version 0.0.0, systemTag: linux64
[cardano-sl.diffusion:Notice:ThreadId 25] [2019-02-13 07:40:49.34 UTC] dnsSubscriptionWorker: valency 1
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.34 UTC] Genesis stakeholders (4 addresses, dust threshold 4 coin(s)): GenesisWStakeholders: {1a1ff7035103d8a9: 1, 281e5ae9e357970a: 1, 44283ce5c44e6e00: 1, 5f53e01e1366aeda: 1}
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.34 UTC] GenesisDelegation (stakeholder ids): [44283ce5c44e6e00 -> 81713ef44a946310, 1a1ff7035103d8a9 -> df4901e8f6abd96a, 281e5ae9e357970a -> c96ac1e118c0d384, 5f53e01e1366aeda -> f83e9e0270abcc74]
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.35 UTC] First genesis block hash: b8143c075d5e96e5, genesis seed is 736b6f766f726f64612047677572646120626f726f64612070726f766f646120
[cardano-sl.node:Info:ThreadId 23] [2019-02-13 07:40:49.35 UTC] Current tip header: GenesisBlockHeader:
hash: b8143c075d5e96e595fb8d03376acb74d8ae02f2e81d7cebca8f07d81c3a2d05
previous block: 791f4256e14c67b9035c3b80a0826adf719d3636c18eef16c98b84b833723d51
epoch: #0
difficulty: 0

[cardano-sl.node:Info:ThreadId 41] [2019-02-13 07:40:49.35 UTC] Starting retrievalWorker loop
[cardano-sl.node:Debug:ThreadId 41] [2019-02-13 07:40:49.35 UTC] Waiting on the block queue or recovery header var
[cardano-sl.node:Info:ThreadId 51] [2019-02-13 07:40:49.35 UTC] Update trigger worker is locked
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.53 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.53 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.56 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.56 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.59 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.59 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.62 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.62 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.65 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.65 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.68 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.68 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.71 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.71 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.74 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.74 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.77 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.77 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.80 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.80 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.83 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.83 UTC] DNS resolution failure for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing]: [NameError]
[cardano-sl.diffusion:Error:ThreadId 27] [2019-02-13 07:40:49.86 UTC] DNS resolution for [NodeAddrDNS “todo.defaultDnsDomain.com” Nothing] gave no results

:sweat_smile:

Try asking here too. They have been responding pretty quickly.

You ran the node without a configuration. The best way to run the node is to build the connectScripts.mainnet.wallet (or testnet) using nix. More details can be found in the docs/exchange-onboarding.md file in the repo.