docker 实现应用的容器化 consul 集群实现服务的注册、发现 traefik 处理外部流量的负载均衡与路由
启动 consul 集群与 docker 通过 vagrant 起三台虚拟机实现基本的 consul 集群环境（为了节约资源把 docker 也运行在这上面了）。 consul 的 vagrant 配置文件如下：
# -*- mode: ruby -*- # vi: set ft=ruby : # All Vagrant configuration is done below. The "2" in Vagrant.configure # configures the configuration version (we support older styles for # backwards compatibility). Please don't change it unless you know what # you're doing. Vagrant.configure("2") do |config| $script = <<SCRIPT echo "Installing" yum install -y wget wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo yum clean all yum makecache yum install -y jq unzip vim wget net-tools bind-utils dnsmasq sudo cp /vagrant/consul /usr/bin/consul echo "Installing docker.." sudo yum install -y yum-utils device-mapper-persistent-data lvm2 sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo sudo yum install -y docker-ce docker-ce-cli containerd.io sudo systemctl start docker echo "success" SCRIPT # The most common configuration options are documented and commented below. # For a complete reference, please see the online documentation at # https://docs.vagrantup.com. # Every Vagrant development environment requires a box. You can search for # boxes at https://vagrantcloud.com/search. config.vm.box = "centos/7" config.vm.provision "shell", inline: $script config.vm.define "node1" do |node1| node1.vm.hostname = "node1" node1.vm.network "private_network", ip: "172.17.17.11" end config.vm.define "node2" do |node2| node2.vm.hostname = "node2" node2.vm.network "private_network", ip: "172.17.17.12" end config.vm.define "node3" do |node3| node3.vm.hostname = "node3" node3.vm.network "private_network", ip: "172.17.17.13" end # Disable automatic box update checking. If you disable this, then # boxes will only be checked for updates when the user runs # `vagrant box outdated`. This is not recommended. config.vm.box_check_update = false # Create a forwarded port mapping which allows access to a specific port # within the machine from a port on the host machine. In the example below, # accessing "localhost:8080" will access port 80 on the guest machine. # NOTE: This will enable public access to the opened port # config.vm.network "forwarded_port", guest: 80, host: 8080 # Create a forwarded port mapping which allows access to a specific port # within the machine from a port on the host machine and only allow access # via 127.0.0.1 to disable public access # config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1" # Create a private network, which allows host-only access to the machine # using a specific IP. # config.vm.network "private_network", ip: "192.168.33.10" # Create a public network, which generally matched to bridged network. # Bridged networks make the machine appear as another physical device on # your network. # config.vm.network "public_network" # Share an additional folder to the guest VM. The first argument is # the path on the host to the actual folder. The second argument is # the path on the guest to mount the folder. And the optional third # argument is a set of non-required options. # config.vm.synced_folder "../data", "/vagrant_data" # Provider-specific configuration so you can fine-tune various # backing providers for Vagrant. These expose provider-specific options. # Example for VirtualBox: # config.vm.provider "virtualbox" do |vb| # # Display the VirtualBox GUI when booting the machine # vb.gui = true # # # Customize the amount of memory on the VM: vb.memory = "1024" end # # View the documentation for the provider you are using for more # information on available options. # Enable provisioning with a shell script. Additional provisioners such as # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the # documentation for more information about their specific syntax and use. # config.vm.provision "shell", inline: <<-SHELL # apt-get update # apt-get install -y apache2 # SHELL end 为了节省时间我直接下载好了 consul 的可执行文件放到了 vagrant 配置文件同目录下，vagrant 会把当前目录下的文件都复制进虚拟机的 /vagrant 目录下，还有三个节点的 consul 配置文件。
...