上篇博客介紹了在一臺電腦上配置多個geth節點,同時再最後也有個問題,多臺電腦之間連接沒有成功,後來多方研究之後,搭建成功了。防火牆沒關!!!
Ubuntu系統關閉防火牆命令:sudo ufw disable
現在三臺電腦:電腦一 219.216.65.127(Ubuntu)、電腦二 219.216.65.139(Windows)、電腦三 219.216.64.144(Ubuntu)
三臺電腦上的genesis.json文件要相同,創建一樣的創世區塊;然後networkid要相同,屬於同一個網絡。genesis.json文件如下:
{
"nonce": "0x0000000000000042",
"timestamp": "0x00",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"extraData": "0x00",
"gasLimit": "0x80000000",
"difficulty": "0x01",
"mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"coinbase": "0x3333333333333333333333333333333333333333",
"alloc": { }
}
好了,現在來在三臺電腦上各自創建一個節點
電腦一
//創建創世區塊
$ geth --datadir ~/ether/n1 init genesis.json
# 啓動console
$ geth --identity "hello" --datadir ~/ether/n1 --port 30301 --rpcport 8101 --networkid 12345 console 2>> ~/ether/n1/geth.log
啓動成功,獲取節點信息,方便後面連接。
> admin.nodeInfo
{
enode: "enode://2c196b02b23598426f3915dbd7a1e8e178b067b3e9921af6849e42027ec41f73f6febc27b52da7e77c0edf69412b0231b886904c750167de335ead2798de12ff@[::]:30301",
id: "2c196b02b23598426f3915dbd7a1e8e178b067b3e9921af6849e42027ec41f73f6febc27b52da7e77c0edf69412b0231b886904c750167de335ead2798de12ff",
ip: "::",
listenAddr: "[::]:30301",
name: "Geth/v1.4.5-stable-a269a713/linux/go1.4.2/hello",
ports: {
discovery: 30301,
listener: 30301
},
protocols: {
eth: {
difficulty: 5290384,
genesis: "0x6099b65e564bd511f49e8f39ba27b6a68b6b78fd1481592257f06bbf93abe624",
head: "0x337f2059a1a6d82aee1afba91828d86a8a3b6f85d83b8cb2f8a9210af3b29c1c",
network: 12345
}
}
}
同樣地,在電腦二、三上創建創世區塊,啓動console,獲取它們的節點信息,然後在電腦一上連接另外兩臺電腦上的節點。
電腦二的enode:
"enode://54b7b1dccbe37148cda6e0c9889d23ffb8e2efc905f3c2d001cd66b3b513210a4a426706bab795d83d0c236b9b1647f46947d86c48ac8faf7f802aff318c4aa1@[::]:30301"
電腦三的enode:
"enode://07954219f1a52acfa7562ac841e77860505bb6f6cc948bc540b94326606679d33e805a21b21cb105eaf58f449b0acc84893560919afee00bbc01b8a3fc0213af@[::]:30301"
電腦一連接電腦二和電腦三:
>admin.addPeer("enode://54b7b1dccbe37148cda6e0c9889d23ffb8e2efc905f3c2d001cd66b3b513210a4a426706bab795d83d0c236b9b1647f46947d86c48ac8faf7f802aff318c4aa1@219.216.65.139:30301")
>admin.addPeer("enode://07954219f1a52acfa7562ac841e77860505bb6f6cc948bc540b94326606679d33e805a21b21cb105eaf58f449b0acc84893560919afee00bbc01b8a3fc0213af@219.216.64.144:30301")
現在可以看見連接的數量:
> net.peerCount
2
> admin.peers
[{
caps: ["eth/61", "eth/62", "eth/63"],
id: "07954219f1a52acfa7562ac841e77860505bb6f6cc948bc540b94326606679d33e805a21b21cb105eaf58f449b0acc84893560919afee00bbc01b8a3fc0213af",
name: "Geth/v1.4.5-stable-a269a713/linux/go1.6.2/hello",
network: {
localAddress: "219.216.65.127:30301",
remoteAddress: "219.216.64.144:36332"
},
protocols: {
eth: {
difficulty: 5290384,
head: "337f2059a1a6d82aee1afba91828d86a8a3b6f85d83b8cb2f8a9210af3b29c1c",
version: 63
}
}
}, {
caps: ["eth/61", "eth/62", "eth/63"],
id: "54b7b1dccbe37148cda6e0c9889d23ffb8e2efc905f3c2d001cd66b3b513210a4a426706bab795d83d0c236b9b1647f46947d86c48ac8faf7f802aff318c4aa1",
name: "Geth/v1.4.5-stable/windows/go1.6.2/hello",
network: {
localAddress: "219.216.65.127:30301",
remoteAddress: "219.216.65.139:50911"
},
protocols: {
eth: {
difficulty: 5290384,
head: "337f2059a1a6d82aee1afba91828d86a8a3b6f85d83b8cb2f8a9210af3b29c1c",
version: 63
}
}
}]
現在可以看見兩個節點都連接成功。主要是防火牆的問題!