如何更改在docker下运行的Logstash的默认URL ?

Question

我正在尝试使用docker-compose运行一个具有Kibana和Logstash的elasticsearch集群。

我遇到的问题是，Logstash一直在寻找弹性搜索DB主机名http://elasticsearch:9200。下面是logstash输出的一个示例:

logstash    | [2021-08-23T15:30:03,534][WARN ][logstash.licensechecker.licensereader] Marking url as dead. Last error: [LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError] Elasticsearch Unreachable: [http://elasticsearch:9200/][Manticore::ResolutionFailure] elasticsearch {:url=>http://elasticsearch:9200/, :error_message=>"Elasticsearch Unreachable: [http://elasticsearch:9200/][Manticore::ResolutionFailure] elasticsearch", :error_class=>"LogStash::Outputs::ElasticSearch::HttpClient::Pool::HostUnreachableError"}
logstash    | [2021-08-23T15:30:03,540][ERROR][logstash.licensechecker.licensereader] Unable to retrieve license information from license server {:message=>"Elasticsearch Unreachable: [http://elasticsearch:9200/][Manticore::ResolutionFailure] elasticsearch"}

我也附上我的docker-compose。yml文件。

version: '2.2'
services:
es01:
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
container_name: es01
environment:
- node.name=es01
- cluster.name=es-docker-cluster
- discovery.seed_hosts=es02,es03
- cluster.initial_master_nodes=es01,es02,es03
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- data01:/usr/share/elasticsearch/data
ports:
- 9200:9200
networks:
- elastic
es02:
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
container_name: es02
environment:
- node.name=es02
- cluster.name=es-docker-cluster
- discovery.seed_hosts=es01,es03
- cluster.initial_master_nodes=es01,es02,es03
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- data02:/usr/share/elasticsearch/data
networks:
- elastic
es03:
image: docker.elastic.co/elasticsearch/elasticsearch:7.14.0
container_name: es03
environment:
- node.name=es03
- cluster.name=es-docker-cluster
- discovery.seed_hosts=es01,es02
- cluster.initial_master_nodes=es01,es02,es03
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- data03:/usr/share/elasticsearch/data
networks:
- elastic
kib01:
image: docker.elastic.co/kibana/kibana:7.14.0
container_name: kib01
ports:
- 5601:5601
environment:
ELASTICSEARCH_URL: http://es01:9200
ELASTICSEARCH_HOSTS: '["http://es01:9200","http://es02:9200","http://es03:9200"]'
networks:
- elastic
logstash:
image: logstash:7.14.0
environment:
ELASTICSEARCH_HOST: localhost
container_name: logstash
hostname: localhost
ports: 
- 9600:9600
- 8089:8089
volumes:
- ./logstash/logstash.yml
- ./logstash/pipelines.yml
- ./logstash/data
command: --config.reload.automatic
environment:
LS_JAVA_OPTS: "-Xmx1g -Xms1g"
links:
- es01:es01
depends_on:
- es01
networks:
- elastic
volumes:
data01:
driver: local
data02:
driver: local
data03:
driver: local
networks:
elastic:
driver: bridge

由于某些原因，将主机放入docker撰写yaml文件似乎不起作用。我应该去哪里指向logstash localhost而不是'elasticsearch'?

感谢

Answer 1

我不认为Logstash有任何这样的变量ELASTICSEARCH_HOST…另外，localhost将引用Logstash容器本身，而不是其他东西。并且不要为容器设置hostname: localhost…

您没有名为elasticsearch的容器/服务，您有es01-3，因此为什么它无法连接，(注意Kibana使用正确的地址)，并且您将在Logstash配置/管道文件中修改该地址