Common Problems

Whether the node is running normally after the deployment is complete

After the deployment is complete, check whether the block height increases normally. If the block height is greater than 1, it means that the node is running normally.

• Command

  Calling the following command（For example, the IP is 127.0.0.1 and the port is 18002.）：

  [root@zetrix ~]# curl 127.0.0.1:18002/getLedger

• Result

  The results are as follows:

  {
    "error_code" : 0,
    "result" : {
      "header" : {
        "account_tree_hash" : "bf337b72bb5ab150f25a4e665259049cd94fa70966a1c0f56f79a44969980ccb",
        "close_time" : 1558595960522453,
        "consensus_value_hash" : "04c172793d72b14ce2da8c5a9f9b7366edf75bc3c81aaf9f3069e6af3af1c857",
        "fees_hash" : "916daa78d264b3e2d9cff8aac84c943a834f49a62b7354d4fa228dab65515313",
        "hash" : "7349292089a68b134c03aefceed8a3ce0bf69960a21a6ca41467a672d3e2c3ce",
        "previous_hash" : "5d86cc2bb4a97831c4f8bbb1bbb8a09289337c42c33fa64bc7c1aa352b17b2ba",
        "seq" : 3,
        "validators_hash" : "9ff25c4231deb81c44eec379fd2467156d2389c5d69edf308d38f7b5ac53705b",
        "version" : 1002
      }
    }
  }

  Note: Here seq is the block height, it is 3, and it continues to grow, indicating that the node is running normally.

The node is running normally, but the transaction commit always fails

Check to see if the node is synchronized. For nodes that are not synchronized, the sent transaction cannot be executed normally.

• Command

  View the current node status, the command is as follows:

  [root@zetrix ~]# curl 127.0.0.1:18002/getModulesStatus

• Result

  The partial results are shown below:

  ...
  "ledger_manager" : {
        "account_count" : 117,
        "chain_max_ledger_seq" : 3185646,
        "hash_type" : "sha256",
        "ledger_context" : {
           "completed_size" : 0,
           "running_size" : 0
        },
        "ledger_sequence" : 65017,
  },
  ...

  Note: The chain_max_ledger_seq indicates the latest block height of the current blockchain. The ledger_sequence indicates the block height of the current node. Since the ledger_sequence is smaller than the chain_max_ledger_seq, it indicates that the current block has not been synchronized yet, and the transaction sent through the node cannot be executed normally.