为了使每个容器都成为默认桥的一部分，我在每个服务中添加了network_mode: bridge。这些已成为网桥的一部分，但容器未附加主机名。下面是配置。
docker-compose.yml
version: '2'
services:
elasticsearch:
build:
context: elasticsearch/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro
ports:
- "9200:9200"
- "9300:9300"
environment:
ES_JAVA_OPTS: "-Xmx256m -Xms256m"
network_mode: bridge
hostname: elasticsearch
logstash:
build:
context: logstash/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./logstash/config/logstash.yml:/usr/share/logstash/config/logstash.yml:ro
- ./logstash/pipeline:/usr/share/logstash/pipeline:ro
ports:
- "5000:5000"
- "9600:9600"
environment:
LS_JAVA_OPTS: "-Xmx256m -Xms256m"
network_mode: bridge
depends_on:
- elasticsearch
kibana:
build:
context: kibana/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./kibana/config/:/usr/share/kibana/config:ro
ports:
- "5601:5601"
network_mode: bridge
depends_on:
- elasticsearch
Docker组成
$ docker-compose up -d
Creating docker-elk_elasticsearch_1 ... done
Creating docker-elk_kibana_1 ... done
Creating docker-elk_logstash_1 ... done
Docker网络检查
$ docker network inspect bridge
[
{
"Name": "bridge",
"Id": "f561a85fb2b22bbf251545c7021d57020cf152bd3a5c3c061c7d6b0cb4e267e5",
"Created": "2018-09-19T07:02:49.36259364Z",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.17.0.0/16",
"Gateway": "172.17.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"0aedc2ce900b8a51f028e58a85c8db9480fd2816874a608540a899a4daab32fd": {
"Name": "docker-elk_kibana_1",
"EndpointID": "df3af338e0accb880ccc44323e5581064ee8ef84574485f1928d12dc415b598e",
"MacAddress": "02:42:ac:11:00:05",
"IPv4Address": "172.17.0.5/16",
"IPv6Address": ""
},
"3f2088847bd8e958a047093b1af879c91c4071f57f0105bb7bf80fb8df832d41": {
"Name": "docker-elk_logstash_1",
"EndpointID": "6588b7eece43144833ae2f9ffe753e3cc6c70d0891a587c3e9a4e9ca84993532",
"MacAddress": "02:42:ac:11:00:06",
"IPv4Address": "172.17.0.6/16",
"IPv6Address": ""
},
"ace35bb6fadd50823f64e9075b5972e6e3b24e8b73273a41e7a48f9eeff89da1": {
"Name": "roach",
"EndpointID": "dd058e3e9f46b2459f14a2e5bdf96eae277e81dcf7ac2e6ac1c97d8220ead30d",
"MacAddress": "02:42:ac:11:00:03",
"IPv4Address": "172.17.0.3/16",
"IPv6Address": ""
},
"f90378063d2a0157110b77af39f2526347f1ea9634839e0d2c0c584fb14ff957": {
"Name": "docker-elk_elasticsearch_1",
"EndpointID": "294a2f67196788135f370bbf83526395ba4401afb25db9eb0b59fba7fd358912",
"MacAddress": "02:42:ac:11:00:04",
"IPv4Address": "172.17.0.4/16",
"IPv6Address": ""
},
"f954c218e5ab15c83c2a0e2c848549c18879613f6f46d07f7ebf71cc89b6e55b": {
"Name": "rabbitmq",
"EndpointID": "e675ddc6076fe2256553e8b367a82aa36f488457e06ae6cf969c2e04feeb9fb8",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"IPv6Address": ""
}
},
"Options": {
"com.docker.network.bridge.default_bridge": "true",
"com.docker.network.bridge.enable_icc": "true",
"com.docker.network.bridge.enable_ip_masquerade": "true",
"com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
"com.docker.network.bridge.name": "docker0",
"com.docker.network.driver.mtu": "1500"
},
"Labels": {}
}
]
Docker检查elasticsearch
$ docker inspect docker-elk_elasticsearch_1
"NetworkSettings": {
"Bridge": "",
"SandboxID": "31a438f8fcb3dd8efca37260e77d346f21239b36d8bb30f5f08db4b79880a5c9",
"HairpinMode": false,
"LinkLocalIPv6Address": "",
"LinkLocalIPv6PrefixLen": 0,
"Ports": {
"9200/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "9200"
}
],
"9300/tcp": [
{
"HostIp": "0.0.0.0",
"HostPort": "9300"
}
]
},
"SandboxKey": "/var/run/docker/netns/31a438f8fcb3",
"SecondaryIPAddresses": null,
"SecondaryIPv6Addresses": null,
"EndpointID": "294a2f67196788135f370bbf83526395ba4401afb25db9eb0b59fba7fd358912",
"Gateway": "172.17.0.1",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"IPAddress": "172.17.0.4",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"MacAddress": "02:42:ac:11:00:04",
"Networks": {
"bridge": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "f561a85fb2b22bbf251545c7021d57020cf152bd3a5c3c061c7d6b0cb4e267e5",
"EndpointID": "294a2f67196788135f370bbf83526395ba4401afb25db9eb0b59fba7fd358912",
"Gateway": "172.17.0.1",
"IPAddress": "172.17.0.4",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:11:00:04",
"DriverOpts": null
}
}
}
Kibana记录无法进行弹性搜索的地方：
$ docker logs docker-elk_kibana_1
{"type":"log","@timestamp":"2018-09-20T05:27:05Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"Unable to revive connection: http://elasticsearch:9200/"}
{"type":"log","@timestamp":"2018-09-20T05:27:05Z","tags":["warning","elasticsearch","admin"],"pid":1,"message":"No living connections"}
但是，在没有提供任何与网络相关的配置的配置下，一切都可以正常工作。
version: '2'
services:
elasticsearch:
build:
context: elasticsearch/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro
ports:
- "9200:9200"
- "9300:9300"
environment:
ES_JAVA_OPTS: "-Xmx256m -Xms256m"
logstash:
build:
context: logstash/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./logstash/config/logstash.yml:/usr/share/logstash/config/logstash.yml:ro
- ./logstash/pipeline:/usr/share/logstash/pipeline:ro
ports:
- "5000:5000"
- "9600:9600"
environment:
LS_JAVA_OPTS: "-Xmx256m -Xms256m"
depends_on:
- elasticsearch
kibana:
build:
context: kibana/
args:
ELK_VERSION: $ELK_VERSION
volumes:
- ./kibana/config/:/usr/share/kibana/config:ro
ports:
- "5601:5601"
depends_on:
- elasticsearch
答案 0 :(得分：3)
默认网桥网络上的容器不能通过主机名相互引用，只能通过IP相互引用。您可以在https://docs.docker.com/network/bridge/#differences-between-user-defined-bridges-and-the-default-bridge这里的文档中找到它。
默认网桥网络上的容器只能通过IP地址互相访问，除非您使用--link选项（这被认为是旧的）。在用户定义的网桥网络上，容器可以通过名称或别名相互解析。
解决方案是按照https://docs.docker.com/compose/compose-file/#networks所述，使用networks在Compose文件中定义您的自定义网桥网络，并将每个容器添加到该用户定义的网络中。在此网络上，容器可以按名称相互解析。