前言
这是一个罕见问题，发生在私有链ETH环境下，当执行truffle migrate --network development
Error: *** Deployment Failed ***
"Migrations" exceeded the block limit (with a gas value you set).
* Block limit: 0x31d836
* Gas sent: 6721975
* Try:
+ Sending less gas.
+ Setting a higher network block limit if you are on a
private network or test client (like ganache).
问题的原因是block limit小于gas花费。
> eth.getBlock(583)
{
difficulty: 173805,
extraData: "0xd883010907846765746888676f312e31332e34856c696e7578",
gasLimit: 5548767,
gasUsed: 0,
hash: "0x18b004737ac869ceb16a80a29072bdabb2557601a166153d155b6add2f42f1c5",
logsBloom: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
miner: "0xde18b50eb2eb9d718f857b05af9d823ec09bb3d6",
mixHash: "0x5830b3e71f46c55920a4e42337fc27f7217fdd7fe13e2a62116ab0cc1125550b",
nonce: "0x096ee30294dc378f",
number: 583,
parentHash: "0x92514cf81550666e2355329841b6181a19cc2b814a5224bf8ab1c007819b501a",
receiptsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
sha3Uncles: "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
size: 538,
stateRoot: "0x065c4b9884d690673241e9a38658d41f4d7ab8dc7fdd1f25e90526f2eb9be077",
timestamp: 1574494459,
totalDifficulty: 88415771,
transactions: [],
transactionsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
uncles: []
}
当时，我才挖出来583个，那个时候 gasLimit: 5548767，但是部署合约消耗，6721975。于是，我就各种查资料，然后，又再一次执行了部署程序，神奇的通过了。
truffle migrate --network development
Compiling your contracts...
===========================
> Everything is up to date, there is nothing to compile.
Starting migrations...
======================
> Network name: 'development'
> Network id: 96574
> Block gas limit: 0x732323
1_initial_migration.js
======================
Deploying 'Migrations'
----------------------
> transaction hash: 0x1f0ef48bf22d7acf4414ed7a3291bd42ae85fa9db245816302aed800ce7374ed
> Blocks: 0 Seconds: 0
> contract address: 0x01Ad2c65798768f15BdA034350a96e8A3b16508F
> block number: 899
> block timestamp: 1574494923
> account: 0xDE18B50EB2eB9d718F857B05af9D823EC09bB3D6
> balance: 4505
> gas used: 277462
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.00554924 ETH
> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.00554924 ETH
2_deploy_contracts.js
=====================
Deploying 'RCT'
---------------
> transaction hash: 0x29e38fe815ad5931272dbc26cfd843def5efeb60d02c96ac97162766635688bd
> Blocks: 0 Seconds: 0
> contract address: 0xC0398b54898aeAC946966b845b2693544Bd34DF4
> block number: 904
> block timestamp: 1574494931
> account: 0xDE18B50EB2eB9d718F857B05af9D823EC09bB3D6
> balance: 4525
> gas used: 2471410
> gas price: 20 gwei
> value sent: 0 ETH
> total cost: 0.0494282 ETH
> Saving migration to chain.
> Saving artifacts
-------------------------------------
> Total cost: 0.0494282 ETH
Summary
=======
> Total deployments: 2
> Final cost: 0.05497744 ETH
此时的block limit 是
> eth.getBlock(864)
{
difficulty: 199208,
extraData: "0xd883010907846765746888676f312e31332e34856c696e7578",
gasLimit: 7299375,
gasUsed: 0,
hash: "0xd13863e0d5a7ac29f5635352c2b43c40e79f195137bbb4b45b400827f455b337",
logsBloom: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
miner: "0xde18b50eb2eb9d718f857b05af9d823ec09bb3d6",
mixHash: "0xcb800a3cdf5430eef2a03ba7256cd741f1574839ee147d3a1542417a2ca9ccc4",
nonce: "0x0523739c86f08ba8",
number: 864,
parentHash: "0x2bbe6987e43d5366918c2a4dce2d62311d25bfacdcfc5d87742030c5c305e7de",
receiptsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
sha3Uncles: "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
size: 538,
stateRoot: "0x5d38b3f52b2cf219ac0ee1ed02c107a102e35033c71ab72a8e90e9b165af8475",
timestamp: 1574494869,
totalDifficulty: 140755143,
transactions: [],
transactionsRoot: "0x56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
uncles: []
}
解决问题了。这个问题的解决方案就是等一会.....
