美图DPOS以太坊教程（Docker版） (2)

移除geth目录，便于移除旧的无效数据，因为节点刚启动的时候，使用的是默认创世配置，而自定义的又不一样，因此需要移除。

sudo rm -rf ~/data/meitu/node1/geth sudo rm -rf ~/data/meitu/node2/geth sudo rm -rf ~/data/meitu/node3/geth 2. 拷贝创世配置到数据目录

将创世配置拷贝到数据目录中，便于容器内能访问，至于这个目录跟docker-compose.yml映射的目录有关。
因此，命令也要相应的变更。

cp genesis.json ~/data/meitu/node1 cp genesis.json ~/data/meitu/node2 cp genesis.json ~/data/meitu/node3 3. 初始化创世配置

进入容器，并执行初始化命令。

# 节点1 docker exec -it meitu_node_1 /bin/sh geth init /root/.ethereum/genesis.json # 节点2 docker exec -it meitu_node_2 /bin/sh geth init /root/.ethereum/genesis.json # 节点3 docker exec -it meitu_node_3 /bin/sh geth init /root/.ethereum/genesis.json

**loop：重复在node2、node3上分别执行init

6. 重启节点网络

以下命令需要在docker-compose.yml文件的当前目录方可运行。

# 移除容器 docker-compose down # 启动容器 docker-compose up -d 7. 查看验证人是否设置成功 1. 进入容器 docker exec -it meitu_node_3 /bin/sh 2. 进入geth JavaScript控制台 geth attach ipc:/root/.ethereum/geth.ipc 3. 执行获取验证人列表命令 dpos.getValidators() ["0x849f9442198282fb21539351edb0378463e4c251", "0x2c08f54d5b324c0175ea53b997f5ce1f61a7e4ed", "0xc4118320f3d3c37a2ca8dad5c2f2a40f2a23ba02"] 8. 节点互联 1. 查看节点是否互联 admin.peers []

返回的数据为[]，说明节点之间没有互相发现。

2. 设置节点互联 1. 查看每个节点信息 admin.nodeInfo

确认：enode都不一样，protocols都一样。
记下三个enode

"enode://7f2f1a5818b4bb7e756036ab08834386534807bbf5c5a305ddcbefa1ff9ea99028feb00cb78322ac39340501d5b7c6147e169aadbb028daf20f8d73dbdfea98e@[::]:30303" "enode://6ab4f74058b9c1e43d2d0c6f55f538ea7f2f366dd9f8f560024f14603333f017d3404b9c9711538289fa76504fecf33cf0e36cce7b0414604f673abe93012413@[::]:30303" "enode://e82fecab04e5e902a9e4ea491527ea958d2cdeb83383dfa36562e32a51eedb204a541e00ef0b497704ec0e91017799a73283e53f6dffdeef492a4230626b10b6@[::]:30303" 2. 查看docker容器网络信息 # 显示docker所有网络信息 docker network ls # 查看具体网络信息 docker network inspect [网络名称] # 例子 docker network inspect docker_default

执行查看网络信息命令后，会返回一下内容

[ { "Name": "docker_default", "Id": "984fabf7e51b07c1984114720f98f305cc61cc26546cf9da4bcbbbc36a591351", "Created": "2018-12-05T06:06:13.435067024Z", "Scope": "local", "Driver": "bridge", "EnableIPv6": false, "IPAM": { "Driver": "default", "Options": null, "Config": [ { "Subnet": "172.20.0.0/16", "Gateway": "172.20.0.1" } ] }, "Internal": false, "Attachable": true, "Ingress": false, "ConfigFrom": { "Network": "" }, "ConfigOnly": false, "Containers": { "263f1553108cc8ea00b76598adb6d66649287943c7d0f50d0be02963863ff45c": { "Name": "meitu_node_2", "EndpointID": "9f4114a81133bd490b501ac45fd50fe512309f9096b5468054bd074bad45a07d", "MacAddress": "02:42:ac:14:00:03", "IPv4Address": "172.20.0.3/16", "IPv6Address": "" }, "3acd943c8e0759dc241d7cc623b1a1ca45096480dcd2fd0daa8b951407eb40bf": { "Name": "meitu_node_3", "EndpointID": "0480296c4e8217862358143a084da2d1563cd4f60105e6020434f222320681a5", "MacAddress": "02:42:ac:14:00:04", "IPv4Address": "172.20.0.4/16", "IPv6Address": "" }, "416fe5eb074c24f032d5bd49a6be68cf293a30af17780133b9fa63663e4b7097": { "Name": "meitu_node_1", "EndpointID": "0dc00e9c6f63f844502525b34e87baf62f4de852ac46907951d4b689dd89635f", "MacAddress": "02:42:ac:14:00:02", "IPv4Address": "172.20.0.2/16", "IPv6Address": "" } }, "Options": {}, "Labels": { "com.docker.compose.network": "default", "com.docker.compose.project": "docker", "com.docker.compose.version": "1.23.1" } } ]

找到不同容器中，相应的IP地址。
记录下每个节点的IP，也可以用127.0.0.1加节点映射到本机的不同网络端口。

meitu_node_1 172.20.0.2 meitu_node_2 172.20.0.3 meitu_node_3 172.20.0.4 3. 添加监视器

进入节点1 geth JavaScript 控制台后，执行以下命令：

# 添加节点2的监视器 admin.addPeer("enode://6ab4f74058b9c1e43d2d0c6f55f538ea7f2f366dd9f8f560024f14603333f017d3404b9c9711538289fa76504fecf33cf0e36cce7b0414604f673abe93012413@[172.20.0.3]:30303") # 添加节点3的监视器 admin.addPeer("enode://e82fecab04e5e902a9e4ea491527ea958d2cdeb83383dfa36562e32a51eedb204a541e00ef0b497704ec0e91017799a73283e53f6dffdeef492a4230626b10b6@[172.20.0.4]:30303") 4.查看节点网络