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fabric之msp和锚节点
再来说一下 搭建fabric网络的步骤
1.生成证书,相当于账号
组织,节点,用户
yaml配置文件
2.创建生成创始区块和通道的文件
运行在docker中
3.启动节点
orderer,peer,客户端
运行在docker中
为了方便管理,编写docker-compose配置文件,批量启动节点
4.通过当前组织的客户端,依次连接到当前组织的peer节点上
创建通道-创建一次
加入到通道中
每个节点都需要加入
安装链码,每个节点都需要安装
对链码初始化,只需要做一次,在任意节点上做
初始化完成,才可以调用
测试->链码调用(客户端)
读数据
写数据
我们现在来搭建一个fabric网络
网络结构如下:
1.排序节点1个
hostname:orderer
2.组织个数2个
aaa组织
-peer节点2个
-用户3个
bbb组织
-peer节点2个
-用户3个
首先需要生成证书文件
那么需要设置
1.组织信息
1.orderer组织
组织名
组织域名
组织内节点的访问域名
2.peer组织
组织名
组织域名
是否生成config.yaml在msp目录中
peer节点的个数(生成peer节点的访问域名)
用户的个数(生成了指定个数的客户端账号)
现在我们来通过cyptogen根据配置文件来生成用户账号
我们先通过showtemplate来生成一个模板文件
cryptogen showtemplate > crypto-config.yaml
然后我们vi crypto-config.yaml
来修改一下这个配置文件
OrdererOrgs:
- Name: Orderer
Domain: abc.com
Specs:
- Hostname: orderer
PeerOrgs
- Name: aaa
Domain: aaa.abc.com
EnableNoeOUs: true
Template:
Count: 2
Users:
Count: 3
- Name: bbb
Domain: bbb.abc.com
EnableNoeOUs: true
Template:
Count: 2
Users:
Count: 3
修改完成,看一下配置文件
# ---------------------------------------------------------------------------
# "OrdererOrgs" - Definition of organizations managing orderer nodes
# ---------------------------------------------------------------------------
OrdererOrgs:
# ---------------------------------------------------------------------------
# Orderer
# ---------------------------------------------------------------------------
- Name: Orderer
Domain: abc.com
# ---------------------------------------------------------------------------
# "Specs" - See PeerOrgs below for complete description
# ---------------------------------------------------------------------------
Specs:
- Hostname: orderer
# ---------------------------------------------------------------------------
# "PeerOrgs" - Definition of organizations managing peer nodes
# ---------------------------------------------------------------------------
PeerOrgs:
# ---------------------------------------------------------------------------
# Org1
# ---------------------------------------------------------------------------
- Name: aaa
Domain: aaa.abc.com
EnableNodeOUs: true
# ---------------------------------------------------------------------------
# "CA"
# ---------------------------------------------------------------------------
# Uncomment this section to enable the explicit definition of the CA for this
# organization. This entry is a Spec. See "Specs" section below for details.
# ---------------------------------------------------------------------------
# CA:
# Hostname: ca # implicitly ca.org1.example.com
# Country: US
# Province: California
# Locality: San Francisco
# OrganizationalUnit: Hyperledger Fabric
# StreetAddress: address for org # default nil
# PostalCode: postalCode for org # default nil
# ---------------------------------------------------------------------------
# "Specs"
# ---------------------------------------------------------------------------
# Uncomment this section to enable the explicit definition of hosts in your
# configuration. Most users will want to use Template, below
#
# Specs is an array of Spec entries. Each Spec entry consists of two fields:
# - Hostname: (Required) The desired hostname, sans the domain.
# - CommonName: (Optional) Specifies the template or explicit override for
# the CN. By default, this is the template:
#
# "{{.Hostname}}.{{.Domain}}"
#
# which obtains its values from the Spec.Hostname and
# Org.Domain, respectively.
# - SANS: (Optional) Specifies one or more Subject Alternative Names
# to be set in the resulting x509. Accepts template
# variables {{.Hostname}}, {{.Domain}}, {{.CommonName}}. IP
# addresses provided here will be properly recognized. Other
# values will be taken as DNS names.
# NOTE: Two implicit entries are created for you:
# - {{ .CommonName }}
# - {{ .Hostname }}
# ---------------------------------------------------------------------------
# Specs:
# - Hostname: foo # implicitly "foo.org1.example.com"
# CommonName: foo27.org5.example.com # overrides Hostname-based FQDN set above
# SANS:
# - "bar.{{.Domain}}"
# - "altfoo.{{.Domain}}"
# - "{{.Hostname}}.org6.net"
# - 172.16.10.31
# - Hostname: bar
# - Hostname: baz
# ---------------------------------------------------------------------------
# "Template"
# ---------------------------------------------------------------------------
# Allows for the definition of 1 or more hosts that are created sequentially
# from a template. By default, this looks like "peer%d" from 0 to Count-1.
# You may override the number of nodes (Count), the starting index (Start)
# or the template used to construct the name (Hostname).
#
# Note: Template and Specs are not mutually exclusive. You may define both
# sections and the aggregate nodes will be created for you. Take care with
# name collisions
# ---------------------------------------------------------------------------
Template:
Count: 2
# Start: 5
# Hostname: {{.Prefix}}{{.Index}} # default
# SANS:
# - "{{.Hostname}}.alt.{{.Domain}}"
# ---------------------------------------------------------------------------
# "Users"
# ---------------------------------------------------------------------------
# Count: The number of user accounts _in addition_ to Admin
# ---------------------------------------------------------------------------
Users:
Count: 3
# ---------------------------------------------------------------------------
# Org2: See "Org1" for full specification
# ---------------------------------------------------------------------------
- Name: bbb
Domain: bbb.abc.com
EnableNodeOUs: true
Template:
Count: 2
Users:
Count: 3
注释看着有点烦人,把注释删掉看一下吧
OrdererOrgs:
- Name: Orderer
Domain: abc.com
Specs:
- Hostname: orderer
PeerOrgs:
- Name: aaa
Domain: aaa.abc.com
EnableNodeOUs: true
Template:
Count: 2
Users:
Count: 3
- Name: bbb
Domain: bbb.abc.com
EnableNodeOUs: true
Template:
Count: 2
Users:
Count: 3
现在配置文件改好了
我们来根据配置文件来生成证书
crypto generate --config=crypto-config.yaml
执行成功,输出了
aaa.abc.com
bbb.abc.com
ls一下,
crypto-config crypto-config.yaml
有配置文件和生成了一个crypto-config文件夹
我们来看一下目录
/test$ tree -L 3
.
├── crypto-config
│ ├── ordererOrganizations
│ │ └── abc.com
│ └── peerOrganizations
│ ├── aaa.abc.com
│ └── bbb.abc.com
└── crypto-config.yaml
6 directories, 1 file
里面有orderer组织和peer组织
然后下面是
abc.com
aaa.abc.com
bbb.abc.com
生成了很多账号
组织的orderer组织,n个peer组织
每个orderer节点,每个peer节点,都有一个账号
然后我们来说一下msp
msp
Membership service provider MSP
成员服务提供者
是一个用来提供成员操作体系结构抽象的组件
MSP抽象出发布和验证证书以及用户身份验证背后的所有加密机制和协议
MSP可以定义他们自己的身份概念
以及管理这些身份(身份验证)和身份验证(签名生成和验证)的规则
简单来说
比如在生成证书的时候,在证书目录中有msp子目录
之后在设置配置文件的时候,也会有msp目录的设置
我们可以把msp理解为账号
账号包括
1.证书
2.秘钥
然后我们来说一下锚节点
锚节点是一个peer节点
那么锚节点和普通peer节点的区别就是
在一个网络中,有多个组织,每个组织有多个peer节点
组织和组织之间需要通信
那么每个组织中选取一个peer节点作为代表
这个peer节点的代表就是锚节点
锚节点的职责就是代表当前这个组织
和其他的组织进行通信
我们可以在配置文件中指定锚节点
任意的peer节点都有资格成为锚节点
一个组织最多有一个锚节点