docker - docker-compose副本主机名

Question

我正在尝试使用docker-compose scale graylog-es-slave=2添加具有副本的群集，但对于版本3的Dockerfile，与Docker compose and hostname不同

我正在尝试做的工作ix弄清楚如何获取副本集中的特定节点

这是我尝试过的

D:\p\liberty-docker>docker exec 706814bf33b2 ping graylog-es-slave -c 2
PING graylog-es-slave (172.19.0.4): 56 data bytes
64 bytes from 172.19.0.4: icmp_seq=0 ttl=64 time=0.067 ms
64 bytes from 172.19.0.4: icmp_seq=1 ttl=64 time=0.104 ms
--- graylog-es-slave ping statistics ---
2 packets transmitted, 2 packets received, 0% packet loss
round-trip min/avg/max/stddev = 0.067/0.085/0.104/0.000 ms

D:\p\liberty-docker>docker exec 706814bf33b2 ping graylog-es-slave.1 -c 2
ping: unknown host

D:\p\liberty-docker>docker exec 706814bf33b2 ping graylog-es-slave_1 -c 2
ping: unknown host

docker-compose.yml

version: 3
service:
  graylog-es-slave:
    image: elasticsearch:2
    command: "elasticsearch -Des.cluster.name='graylog'"
    environment:
      ES_HEAP_SIZE: 2g
    deploy:
      replicas: 2 <-- this is ignored on docker-compose just putting it here for completeness

Answer 1

代替.，使用_(下划线)，并添加项目名称的前缀(保存您的docker-compose.yml的目录，我假设它是liberty-docker_graylog):

ping liberty-docker_graylog-es-slave_1

您会看到这样做 network ls，搜索正确的网络，然后搜索 docker network inspect network_id。