前章回顾
上一章使用了docker命令部署consul集群，但是每次都敲命令太麻烦了，可以使用docker-compose简化。
docker-compose简介
本章内容参考官网：https://docs.docker.com/compose/
Compose是一个用于定义和运行多容器Docker应用程序的工具。使用Compose，您可以使用YAML文件来配置应用程序的服务。然后，使用单个命令，您可以从配置中创建并启动所有服务。
docker-compose安装
进入官网，https://docs.docker.com/compose/install/，选择linux，可以找到安装命令
#运行此命令以下载Docker Compose的当前稳定版本：
sudo curl -L "https://github.com/docker/compose/releases/download/1.24.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
#对二进制文件应用可执行权限：
sudo chmod +x /usr/local/bin/docker-compose
#可以移到到你需要的目录下，也可以不移动，如果移动，例如
mv /usr/local/bin/docker-compose /docker/docker-compose
#可以再创建一个链接就行
sudo ln -s /docker/docker-compose /usr/bin/docker-compose
#测试安装
$ docker-compose --version
docker-compose version 1.24.1, build 1110ad01
编写docker-compose.yml
version: '3'
services:
#服务名
consul_server_1:
#容器名
container_name: consul_server_1
#使用的镜像
image: consul:1.6.0
#映射的端口
ports:
- "8500:8500"
#使用的网络
networks:
- consul
#映射的目录
volumes:
- /docker/consul/server1/config:/consul/config
- /docker/consul/server1/data:/consul/data
#需要导入的环境变量
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
#是否伴随docker重启
restart: always
#执行的命令
command: [
'agent'
]
#使用自定义网络，这样每次启动就不会创建新的网络了，ip相对固定
networks:
consul:
docker-compose启动
#启动/停止都需要进入到docker-compose.yml目录下
#启动命令-前台运行
docker-compose up
#启动命令-后台运行
docker-compose up -d
#停止命令
docker-compose stop
#更多命令进入官网学习：https://docs.docker.com/compose/
注意网络问题
docker-compose使用的是docker网络
#查看现有docker网络
docker network ls
#删除一个网络
docker network rm +name
#查看一个网络的详情
docker network inspect +name
#docker-compose网络设置
#自定义网络
networks:
frontend:
backend:
#使用默认网络
networks:
default:
# Use a custom driver
driver: custom-driver-1
#使用现有网络
networks:
default:
external:
name: my-pre-existing-network
#更多参考官网：https://docs.docker.com/compose/networking/
修改consul另外节点的join IP
获取consul_server_1的ip，可以根据启动日志，或者运行完之后执行docker exec consul_server_1 consul members查看IP
或
修改其余consul配置的join ip
在docker-compose.yml中增加其他节点服务，完整配置如下：
version: '3'
services:
consul_server_1:
container_name: consul_server_1
image: consul:1.6.0
ports:
- "8500:8500"
networks:
- consul
volumes:
- /docker/consul/server1/config:/consul/config
- /docker/consul/server1/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_server_2:
container_name: consul_server_2
image: consul:1.6.0
networks:
- consul
volumes:
- /docker/consul/server2/config:/consul/config
- /docker/consul/server2/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_server_3:
container_name: consul_server_3
image: consul:1.6.0
networks:
- consul
volumes:
- /docker/consul/server3/config:/consul/config
- /docker/consul/server3/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_client_1:
container_name: consul_client_1
image: consul:1.6.0
networks:
- consul
volumes:
- /docker/consul/client1/config:/consul/config
- /docker/consul/client1/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
networks:
consul:
启动，查看
服务均正常，以后启动只需要docker-compose up -d 和 docker-compose stop即可，大大方便！
增加固定IP部署配置
version: '3'
services:
consul_server_1:
container_name: consul_server_1
image: consul:1.6.0
ports:
- "8500:8500"
networks:
consul:
ipv4_address: 172.20.0.2
volumes:
- /docker/consul/server1/config:/consul/config
- /docker/consul/server1/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_server_2:
container_name: consul_server_2
image: consul:1.6.0
networks:
consul:
ipv4_address: 172.20.0.3
volumes:
- /docker/consul/server2/config:/consul/config
- /docker/consul/server2/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_server_3:
container_name: consul_server_3
image: consul:1.6.0
networks:
consul:
ipv4_address: 172.20.0.4
volumes:
- /docker/consul/server3/config:/consul/config
- /docker/consul/server3/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
consul_client_1:
container_name: consul_client_1
image: consul:1.6.0
networks:
consul:
ipv4_address: 172.20.0.5
volumes:
- /docker/consul/client1/config:/consul/config
- /docker/consul/client1/data:/consul/data
environment:
- CONSUL_BIND_INTERFACE=eth0
- TZ=Asia/Shanghai
restart: always
command: [
'agent'
]
networks:
consul:
ipam:
config:
- subnet: 172.20.0.0/16
