安装、部署超级账本(hyperledger 2.2)遇到的坑
安装部署是按照官方文档的步骤进行的
官方文档连接：https://hyperledger-fabric.readthedocs.io/zh_CN/release-2.2
以下列出我在安装时遇到的问题及解决办法
curl: (7) Failed to connect to xxx port 443: Connection refused
解决办法：
（1）打开网站https://www.ipaddress.com/
搜索xxx，我这里演示的是Bit.ly，得到ip地址：67.199.248.10（选一个即可）
（2）替换系统的host文件
这里由于是系统文件需要复制一份出来修改。
把 67.199.248.10 bit.ly 放在文件最后保存，最后再替换掉原本的。
（3）执行你要执行的命令就可以了
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下载镜像很慢或者总是不成功，可以配置镜像加速器
这里推荐阿里镜像加速器：https://cr.console.aliyun.com/cn-hangzhou/mirrors
进入网站后需要注册登陆，搜索容器镜像服务，点击镜像中心>>镜像加速器
就可以看到如何配置的教程了。 -
Error: chaincode install failed with status: 500 - failed to invoke backing implementation of 'InstallChaincode': chaincode already successfully installed
获取已添加到通道分类账中的汽车列表，在test-network目录下执行
peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'时，出现
Error: chaincode install failed with status: 500 - failed to invoke backing implementation of 'InstallChaincode': chaincode already successfully installed
解决办法：查看报错信息，我们可以知道，链码 fabcar 没有在通道上被定义，所以我们进入对应目录，执行启动指令：cd /your path/fabric-samples/fabcar后，执行./startFabric.sh，等待完成即可。
最后再继续运行之前的指令 peer chaincode query -C mychannel -n fabcar -c '{"Args":["queryAllCars"]}'，可以得到如下结果：
[{ "Key":"CAR0","Record":{ "make":"Toyota","model":"Prius","colour":"blue","owner":"Tomoko"}},{ "Key":"CAR1","Record":{ "make":"Ford","model":"Mustang","colour":"red","owner":"Brad"}},{ "Key":"CAR2","Record":{ "make":"Hyundai","model":"Tucson","colour":"green","owner":"Jin Soo"}},{ "Key":"CAR3","Record":{ "make":"Volkswagen","model":"Passat","colour":"yellow","owner":"Max"}},{ "Key":"CAR4","Record":{ "make":"Tesla","model":"S","colour":"black","owner":"Adriana"}},{ "Key":"CAR5","Record":{ "make":"Peugeot","model":"205","colour":"purple","owner":"Michel"}},{ "Key":"CAR6","Record":{ "make":"Chery","model":"S22L","colour":"white","owner":"Aarav"}},{ "Key":"CAR7","Record":{ "make":"Fiat","model":"Punto","colour":"violet","owner":"Pari"}},{ "Key":"CAR8","Record":{ "make":"Tata","model":"Nano","colour":"indigo","owner":"Valeria"}},{ "Key":"CAR9","Record":{ "make":"Holden","model":"Barina","colour":"brown","owner":"Shotaro"}}]
