Grepping log for errors (and ignoring ones between my relay and my producer), this is what I get:
{"thread":"38","loc":null,"data":{"kind":"TraceAddBlockEvent.AddBlockValidation.InvalidBlock","block":{"kind":"Point","hash":"448a53bfbb7aa2671d426e01c6a5e7ade16ab14af8d18417aa8b73c3a000397d","slot":17020941},"error":"ExtValidationErrorLedger (HardForkLedgerErrorFromEra S (S (Z (WrapLedgerErr {unwrapLedgerErr = BBodyError (BlockTransitionError [LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"e1f6cb9f65d11425be3aefc5ff5ac2f2d33f885ddfde3c258c4b23f5\")},Coin 351635274)])))),LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"a16b3e08f2ee91cf9b62075e45e3908f523014f9eba3ca188dd3c1b7\")},Coin 1018419043)]))))])}))))"},"sev":"Error","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ChainDB"],"at":"2021-06-02T17:31:33.87Z"}
{"thread":"128365","loc":null,"data":{"kind":"ChainSyncClientEvent.TraceException","peer":{"remote":{"addr":"51.145.240.140","port":"17654"},"local":{"addr":"172.16.0.153","port":"42047"}},"exception":"InvalidBlock (At (Block {blockPointSlot = SlotNo 17020941, blockPointHash = 448a53bfbb7aa2671d426e01c6a5e7ade16ab14af8d18417aa8b73c3a000397d})) (ValidationError (ExtValidationErrorLedger (HardForkLedgerErrorFromEra S (S (Z (WrapLedgerErr {unwrapLedgerErr = BBodyError (BlockTransitionError [LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"e1f6cb9f65d11425be3aefc5ff5ac2f2d33f885ddfde3c258c4b23f5\")},Coin 351635274)])))),LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"a16b3e08f2ee91cf9b62075e45e3908f523014f9eba3ca188dd3c1b7\")},Coin 1018419043)]))))])}))))))"},"sev":"Warning","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ChainSyncClient"],"at":"2021-06-02T17:31:33.88Z"}
{"thread":"128316","loc":null,"data":{"kind":"ChainSyncClientEvent.TraceException","peer":{"remote":{"addr":"110.174.184.26","port":"3001"},"local":{"addr":"172.16.0.153","port":"41377"}},"exception":"InvalidBlock (At (Block {blockPointSlot = SlotNo 17020941, blockPointHash = 448a53bfbb7aa2671d426e01c6a5e7ade16ab14af8d18417aa8b73c3a000397d})) (ValidationError (ExtValidationErrorLedger (HardForkLedgerErrorFromEra S (S (Z (WrapLedgerErr {unwrapLedgerErr = BBodyError (BlockTransitionError [LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"e1f6cb9f65d11425be3aefc5ff5ac2f2d33f885ddfde3c258c4b23f5\")},Coin 351635274)])))),LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"a16b3e08f2ee91cf9b62075e45e3908f523014f9eba3ca188dd3c1b7\")},Coin 1018419043)]))))])}))))))"},"sev":"Warning","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ChainSyncClient"],"at":"2021-06-02T17:31:33.88Z"}
{"thread":"128330","loc":null,"data":{"kind":"ChainSyncClientEvent.TraceException","peer":{"remote":{"addr":"14.201.73.146","port":"3001"},"local":{"addr":"172.16.0.153","port":"39649"}},"exception":"InvalidBlock (At (Block {blockPointSlot = SlotNo 17020941, blockPointHash = 448a53bfbb7aa2671d426e01c6a5e7ade16ab14af8d18417aa8b73c3a000397d})) (ValidationError (ExtValidationErrorLedger (HardForkLedgerErrorFromEra S (S (Z (WrapLedgerErr {unwrapLedgerErr = BBodyError (BlockTransitionError [LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"e1f6cb9f65d11425be3aefc5ff5ac2f2d33f885ddfde3c258c4b23f5\")},Coin 351635274)])))),LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"a16b3e08f2ee91cf9b62075e45e3908f523014f9eba3ca188dd3c1b7\")},Coin 1018419043)]))))])}))))))"},"sev":"Warning","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ChainSyncClient"],"at":"2021-06-02T17:31:33.88Z"}
{"thread":"139602","loc":null,"data":{"kind":"ChainSyncClientEvent.TraceException","peer":{"remote":{"addr":"61.69.254.98","port":"3001"},"local":{"addr":"172.16.0.153","port":"36303"}},"exception":"InvalidBlock (At (Block {blockPointSlot = SlotNo 17020941, blockPointHash = 448a53bfbb7aa2671d426e01c6a5e7ade16ab14af8d18417aa8b73c3a000397d})) (ValidationError (ExtValidationErrorLedger (HardForkLedgerErrorFromEra S (S (Z (WrapLedgerErr {unwrapLedgerErr = BBodyError (BlockTransitionError [LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"e1f6cb9f65d11425be3aefc5ff5ac2f2d33f885ddfde3c258c4b23f5\")},Coin 351635274)])))),LedgersFailure (LedgerFailure (DelegsFailure (WithdrawalsNotInRewardsDELEGS (fromList [(RewardAcnt {getRwdNetwork = Mainnet, getRwdCred = KeyHashObj (KeyHash \"a16b3e08f2ee91cf9b62075e45e3908f523014f9eba3ca188dd3c1b7\")},Coin 1018419043)]))))])}))))))"},"sev":"Warning","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ChainSyncClient"],"at":"2021-06-02T17:31:33.89Z"}
{"thread":"64","loc":null,"data":{"address":"203.159.80.226:45726","kind":"ErrorPolicyTrace","event":"ErrorPolicySuspendPeer (Just (ApplicationExceptionTrace (MuxError MuxBearerClosed \"<socket: 34> closed when reading data, waiting on next header True\"))) 20s 20s"},"sev":"Warning","env":"1.27.0:98a06","msg":"","app":[],"host":"sm3","pid":"3267799","ns":["cardano.node.ErrorPolicy"],"at":"2021-06-02T20:03:50.60Z"}
this looks for me like protocol or blockchain error, not really specific to my deployment. Can anyone confirm or provide some guidance how to read that?