如何设置覆盖networking模式的Docker Swarm集群
我在2台Linux机器上创build了一个docker swarm集群，但是当我使用docker-compose up -d启动容器时，发生了一些错误。
这是我的docker信息：
Containers: 4 Running: 4 Paused: 0 Stopped: 0 Images: 28 Server Version: swarm/1.2.5 Role: primary Strategy: spread Filters: health, port, containerslots, dependency, affinity, constraint Nodes: 2 ozcluster01: 192.168.168.41:2375 └ ID: CKCO:JGAA:PIOM:F4PL:6TIH:EQFY:KZ6X:B64Q:HRFH:FSTT:MLJT:BJUY └ Status: Healthy └ Containers: 2 (2 Running, 0 Paused, 0 Stopped) └ Reserved CPUs: 0 / 2 └ Reserved Memory: 0 B / 3.79 GiB └ Labels: executiondriver=native-0.2, kernelversion=3.10.0- 327.13.1.el7.x86_64, operatingsystem=CentOS Linux 7 (Core), storagedriver=devicemapper └ UpdatedAt: 2016-11-04T02:05:08Z └ ServerVersion: 1.10.3 ozcluster02: 192.168.168.42:2375 └ ID: 73GR:6M7W:GMWD:D3DO:UASW:YHJ2:BTH6:DCO5:NJM6:SXPN:PXTY:3NHI └ Status: Healthy └ Containers: 2 (2 Running, 0 Paused, 0 Stopped) └ Reserved CPUs: 0 / 2 └ Reserved Memory: 64 MiB / 3.79 GiB └ Labels: executiondriver=native-0.2, kernelversion=3.10.0-327.10.1.el7.x86_64, operatingsystem=CentOS Linux 7 (Core), storagedriver=devicemapper └ UpdatedAt: 2016-11-04T02:05:06Z └ ServerVersion: 1.10.3 这是我的docker-compose.yml
version: '2' services: rabbitmq: image: rabbitmq ports: - "5672:5672" - "15672:15672" network_mode: "bridge" config-service: image: ozms/config-service ports: - "8888:8888" volumes: - ~/ozms/configs:/var/tmp/ - ~/ozms/log:/log network_mode: "bridge" labels: - "affinity:image==ozms/config-service" eureka-service: image: ozms/eureka-service ports: - "8761:8761" volumes: - ~/ozms/log:/log links: - config-service - rabbitmq environment: - SPRING_RABBITMQ_HOST=rabbitmq network_mode: "bridge"
在执行rabbitmq docker-compose up -d ，服务rabbitmq和config-service可以启动，但是eureka-service导致错误：
[dannil@ozcluster01 ozms]$ docker-compose up -d Creating ozms_config-service_1 Creating ozms_rabbitmq_1 Creating ozms_eureka-service_1 ERROR: Unable to find a node that satisfies the following conditions [port 8761 (Bridge mode)] [available container slots] [--link=ozms_config-service_1:config-service --link=ozms_config-service_1:config-service_1 --link=ozms_config-service_1:ozms_config-service_1 --link=ozms_rabbitmq_1:ozms_rabbitmq_1 --link=ozms_rabbitmq_1:rabbitmq --link=ozms_rabbitmq_1:rabbitmq_1]
我执行docker ps ：
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 871afc8e1eb6 rabbitmq "docker-entrypoint.sh" 2 minutes ago Up 2 minutes 4369/tcp, 192.168.168.41:5672->5672/tcp, 5671/tcp, 25672/tcp, 192.168.168.41:15672->15672/tcp ozcluster01/ozms_rabbitmq_1 8ef3f666a7b9 ozms/config-service "java -Djava.security" 2 minutes ago Up 2 minutes 192.168.168.42:8888->8888/tcp ozcluster02/ozms_config-service_1
我发现rabbitmq在ozculster01机器上ozculster01 ，config-service在机器ozculster02上启动。
当docker-compose启动config-service ，没有links ，所以可以成功启动。 但是当我在机器ozculster02上启动ozculster02 eureka-service时，有一个到rabbitmq的links ，但是服务rabbitmq在机器ozculster01 ，发生了错误。
我怎么能解决这个问题？
在Docker Swarm集群中使用network_mode: "bridge"是否正确？
我自己解决了这个问题。
在swarm模式下，docker容器不能通过network_mode：bridge联系另一个容器。
在群模式下，必须使用network_mode : overlay 。 如果使用组合文件合成版本2，则默认使用覆盖。
查看更多细节： 搭buildnetworking覆盖的Docker Swarm
在overlay模式下，docker-compose.yml文件不需要configurationlikns ，Container可以使用${service_name_in_composeFile}
例：
我可以进入容器config-service ， $ ping eureka-service ，它工作正常！
这是我的compose-file.yml：
version: '2' services: rabbitmq: image: rabbitmq ports: - "5672:5672" - "15672:15672" config-service: image: ozms/config-service ports: - "8888:8888" volumes: - ~/ozms/configs:/var/tmp/ - ~/ozms/log:/log labels: - "affinity:image==ozms/config-service" eureka-service: image: ozms/eureka-service ports: - "8761:8761" volumes: - ~/ozms/log:/log #links: it is no need in overlay mode # - config-service # - rabbitmq environment: - SPRING_RABBITMQ_HOST=rabbitmq