我有一个简单的Docker撰写文件,如下所示:
version: '3'
services:
server:
build: ./server
networks:
- common
ports:
- "4840:4840"
container_name: open62541_server
hostname: open62541-server
client:
build: ./client
depends_on:
- server
container_name: open62541_client
networks:
- common
networks:
common:
运行它时,出现以下错误:
Attaching to open62541_server, open62541_client
open62541_server | [2019-06-27 12:19:54.864 (UTC+0000)] info/network TCP network layer listening on opc.tcp://open62541-server:4840/
open62541_client | [2019-06-27 12:19:55.590 (UTC+0000)] warn/network DNS lookup of open62541-server failed with error Name or service not known
open62541_client exited with code 0
即使指定了容器属于公共网络,为什么仍会收到此错误?我有什么想念的吗?
答案 0 :(得分:1)
您应该使用server
(服务名称)作为在docker-compose网络内连接的主机,而不是open62541-server
,因为docker文件中的container_name和hostname部分都不会影响docker-compose的内部DNS。 / p>
答案 1 :(得分:1)
您可能在配置文件中有错字。 msg1 db 'enter 4 characters'
是hostname
,而open62541-server
是container_name
(带下划线)。您应该能够使用服务名称(即open62541_server
)或container_name(即server
)连接到服务器