Hi! Whenever I try to connect to my node (it is running on a ubuntu machine) it gives me the error highlighted in the screenshot. Why is that? I changed the config.json so that connections are accepted from 0.0.0.0:8080 in node config.json file.
- Did you stop and start the node after changing the config.json file?
- Can you show the output of (on the server):
(you may need to installsudo netstat -tulpn | grep algodnetstat:sudo apt install net-tools) - Can you check you don’t have any firewall rules blocking it on the server:
sudo ufw status?
Hi Fabrice!
1 - yes, I restarted it
2 -
nick@nick-ThinkPad-T530:~/node$ sudo netstat -tulpn | grep algod
tcp 0 0 127.0.0.1:8080 0.0.0.0:* LISTEN 2929/algod
3 -
nick@nick-ThinkPad-T530:~/node$ sudo ufw status
Status: inactive
I guess you need to set it in the config to listen on 0.0.0.0 instead of 127.0.0.1
This is what I get now when I try to run the command Fabrice mentioned:
nick@nick-ThinkPad-T530:~/node$ sudo netstat -tulpn | grep algod
[sudo] password for nick:
tcp6 0 0 :::8080 :::* LISTEN 13220/algod
The program still gives me the same error as before, so it refuses to connect
Try to access it using ipv6 or disable ipv6 ?
I’m going to sound pretty stupid, but I’m going to say it anyway -
try to change the X.X.X.X in the above code with 127.0.0.1; same goes for the token that can be grabbed from algod.token in your data directory.
Also, I’m not sure if the http:// prefix in the algod_address is needed.
Can you copy-paste your config.json here?
In your first netstat, you’re only listening on localhost as @scholtz pointed out. So that could not work.
And in the second netstat, you only have ipv6 which is very strange.
Yes already done! I was writing X.X.X.X because I thought it was something private. It doesn’t work. Now I’m going to let you see what Fabrice suggested me
This is what I have inside the config.json
{
"Version": 16,
"AccountUpdatesStatsInterval": 5000000000,
"AccountsRebuildSynchronousMode": 1,
"AnnounceParticipationKey": true,
"Archival": false,
"BaseLoggerDebugLevel": 4,
"BlockServiceCustomFallbackEndpoints": "",
"BroadcastConnectionsLimit": -1,
"CadaverSizeTarget": 1073741824,
"CatchpointFileHistoryLength": 365,
"CatchpointInterval": 10000,
"CatchpointTracking": 0,
"CatchupBlockDownloadRetryAttempts": 1000,
"CatchupBlockValidateMode": 0,
"CatchupFailurePeerRefreshRate": 10,
"CatchupGossipBlockFetchTimeoutSec": 4,
"CatchupHTTPBlockFetchTimeoutSec": 4,
"CatchupLedgerDownloadRetryAttempts": 50,
"CatchupParallelBlocks": 16,
"ConnectionsRateLimitingCount": 60,
"ConnectionsRateLimitingWindowSeconds": 1,
"DNSBootstrapID": "<network>.algorand.network",
"DNSSecurityFlags": 1,
"DeadlockDetection": 0,
"DisableLocalhostConnectionRateLimit": true,
"DisableNetworking": false,
"DisableOutgoingConnectionThrottling": false,
"EnableAccountUpdatesStats": false,
"EnableAgreementReporting": false,
"EnableAgreementTimeMetrics": false,
"EnableAssembleStats": false,
"EnableBlockService": false,
"EnableBlockServiceFallbackToArchiver": true,
"EnableCatchupFromArchiveServers": false,
"EnableDeveloperAPI": false,
"EnableGossipBlockService": true,
"EnableIncomingMessageFilter": false,
"EnableLedgerService": false,
"EnableMetricReporting": false,
"EnableOutgoingNetworkMessageFiltering": true,
"EnablePingHandler": true,
"EnableProcessBlockStats": false,
"EnableProfiler": false,
"EnableRequestLogger": false,
"EnableTopAccountsReporting": false,
"EndpointAddress": "0.0.0.0:8080",
"FallbackDNSResolverAddress": "",
"ForceRelayMessages": false,
"GossipFanout": 4,
"IncomingConnectionsLimit": 10000,
"IncomingMessageFilterBucketCount": 5,
"IncomingMessageFilterBucketSize": 512,
"IsIndexerActive": false,
"LedgerSynchronousMode": 2,
"LogArchiveMaxAge": "",
"LogArchiveName": "node.archive.log",
"LogSizeLimit": 1073741824,
"MaxCatchpointDownloadDuration": 7200000000000,
"MaxConnectionsPerIP": 30,
"MinCatchpointFileDownloadBytesPerSecond": 20480,
"NetAddress": "",
"NetworkMessageTraceServer": "",
"NetworkProtocolVersion": "",
"NodeExporterListenAddress": ":9100",
"NodeExporterPath": "./node_exporter",
"OptimizeAccountsDatabaseOnStartup": false,
"OutgoingMessageFilterBucketCount": 3,
"OutgoingMessageFilterBucketSize": 128,
"ParticipationKeysRefreshInterval": 60000000000,
"PeerConnectionsUpdateInterval": 3600,
"PeerPingPeriodSeconds": 0,
"PriorityPeers": {},
"PublicAddress": "",
"ReconnectTime": 60000000000,
"ReservedFDs": 256,
"RestReadTimeoutSeconds": 15,
"RestWriteTimeoutSeconds": 120,
"RunHosted": false,
"SuggestedFeeBlockHistory": 3,
"SuggestedFeeSlidingWindowSize": 50,
"TLSCertFile": "",
"TLSKeyFile": "",
"TelemetryToLog": true,
"TxPoolExponentialIncreaseFactor": 2,
"TxPoolSize": 15000,
"TxSyncIntervalSeconds": 60,
"TxSyncServeResponseSize": 1000000,
"TxSyncTimeoutSeconds": 30,
"UseXForwardedForAddressField": "",
"VerifiedTranscationsCacheSize": 30000
}
- Can you replace your config.json so it only contains the fields that changed, just to be on the safe side.
Something like:
{
"EndpointAddress": "0.0.0.0:8080"
}
- Can you check on the algod machine if everything works properly? E.g.:
curl -s -H "X-Algo-API-Token: thetoken" http://127.0.0.1/v2/status
-
Do the same as above except using the address of the algod machine instead of
127.0.0.1. Does it still work? -
If the above works and the same command does not work from another machine, the issue is most likely that there is a firewall somewhere on your network.