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Spring-Cloud-Consul-Based-Demo

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1 Consul

1.1 安装

方式1：下载二进制程序

  1. consul install

方式2：直接用包管理工具下载，以macOS为例

  1. brew install consul
  2. 其他Linux操作系统类似，比如yum、apt-get等

1.2 run

dev模式

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consul agent -dev

# 得到如下输出
==> Starting Consul agent...
==> Consul agent running!
           Version: 'v1.2.1'
           Node ID: 'ba0ffb9c-6483-6641-aaa6-70568b58a674'
         Node name: 'hechenfengdeMacBook-Pro.local'
        Datacenter: 'dc1' (Segment: '<all>')
            Server: true (Bootstrap: false)
       Client Addr: [127.0.0.1] (HTTP: 8500, HTTPS: -1, DNS: 8600)
      Cluster Addr: 127.0.0.1 (LAN: 8301, WAN: 8302)
           Encrypt: Gossip: false, TLS-Outgoing: false, TLS-Incoming: false

==> Log data will now stream in as it occurs:

server模式

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# 以下命令是官方文档提供的
consul agent -data-dir=/tmp/consul

# 启动失败，得到以下输出
==> No private IPv4 address found

# ifconfig发现确实不存在私有ip，于是通过bind指定一个ip
consul agent -server -data-dir=/tmp/consul -bind=<my ip>

# 启动成功，得到以下输出
==> Starting Consul agent...
==> Consul agent running!
           Version: 'v1.2.1'
           Node ID: 'e5d57d8e-5d28-89b7-8aeb-ef89cd55bba5'
         Node name: 'hechenfengdeMacBook-Pro.local'
        Datacenter: 'dc1' (Segment: '<all>')
            Server: true (Bootstrap: false)
       Client Addr: [127.0.0.1] (HTTP: 8500, HTTPS: -1, DNS: 8600)
      Cluster Addr: <my ip> (LAN: 8301, WAN: 8302)
           Encrypt: Gossip: false, TLS-Outgoing: false, TLS-Incoming: false