Sync DB mainnet stuck

Question

I used the great guidance on https://developers.cardano.org/docs/get-started/running-cardano to step by step sync with the Cardano mainnet.

Everything went fine and i was almost done untill 2 weekish ago when synching slowed down dramatically (practically halted) on Epoch 289.

Any idea what i can do to resume the final epochs to fully sync with the mainnet?

Thanks

[LAPTOP-0:cardano.node.DnsSubscription:Error:254524] [2021-10-02 21:22:51.50 UTC] Domain: "relays-new.cardano-mainnet.iohk.io" Application Exception: 18.159.65.82:3001 MuxError MuxBearerClosed "<socket: 45> closed when reading data, waiting on next header True" [LAPTOP-0:cardano.node.ErrorPolicy:Warning:108] [2021-10-02 21:22:51.50 UTC] IP 18.159.65.82:3001 ErrorPolicySuspendPeer (Just (ApplicationExceptionTrace (MuxError MuxBearerClosed "<socket: 45> closed when reading data, waiting on next header True"))) 20s 20s [LAPTOP-0:cardano.node.DnsSubscription:Error:254541] [2021-10-02 21:22:51.59 UTC] Domain: "relays-new.cardano-mainnet.iohk.io" Application Exception: 3.127.133.53:3001 MuxError MuxBearerClosed "<socket: 49> closed when reading data, waiting on next header True" [LAPTOP-0:cardano.node.ErrorPolicy:Warning:108] [2021-10-02 21:22:51.59 UTC] IP 3.127.133.53:3001 ErrorPolicySuspendPeer (Just (ApplicationExceptionTrace (MuxError MuxBearerClosed "<socket: 49> closed when reading data, waiting on next header True"))) 20s 20s

Answer 1

Hmm have you looked into your firewall settings? Has anything changed on your local machine?

The timing of the issue would tell me it's a version issue but the instructions you followed would suggest otherwise. Run:

cardano-cli --version

Should be atleast 1.29 to proceed. Also check the version of DB sync as protocol has been extended post-Alonzo.

Answer 2

Hi I also had the same issue weeks ago,

it got fixed by following this guide: https://forum.cardano.org/t/solving-the-cardano-node-huge-memory-usage-done/67032

Another thing I also noticed is that it can also be fixed by increasing your swap mem.

However, now I am also having problems with epoch 299 from my db sync.

Upon further inspection it has 570k transactions, which is worse than the epoch you have.

Edit: or it could be your version, since there was the alonzo hardfork as patrick mentioned.