docker logs看不到所有的日志咋回事？

Question

我运行最新版本的ES

sudo docker run --name elasticsearch --net elastic -p 9200:9200 -p 9300:9300 -it docker.elastic.co/elasticsearch/elasticsearch:8.4.3

通过这样的命令运行可以看到下面的日志

--------------------------------------------------------------------------------------------------------------------------------------------------------------
-> Elasticsearch security features have been automatically configured!
-> Authentication is enabled and cluster connections are encrypted.

->  Password for the elastic user (reset with `bin/elasticsearch-reset-password -u elastic`):
  8ttM*KCiYhFqKUAkfA07

->  HTTP CA certificate SHA-256 fingerprint:
  42d3370add618542d597a5af94368757cb0cb7962315c87d373737545a8717c4

->  Configure Kibana to use this cluster:
* Run Kibana and click the configuration link in the terminal when Kibana starts.
* Copy the following enrollment token and paste it into Kibana in your browser (valid for the next 30 minutes):
  eyJ2ZXIiOiI4LjQuMyIsImFkciI6WyIxNzIuMjQuMC4yOjkyMDAiXSwiZmdyIjoiNDJkMzM3MGFkZDYxODU0MmQ1OTdhNWFmOTQzNjg3NTdjYjBjYjc5NjIzMTVjODdkMzczNzM3NTQ1YTg3MTdjNCIsImtleSI6Ik5qZWZJb1FCR3V4ZzRZMHhVQ0pOOmhUendKYWZ2UkQ2d25OWG1xUWE2NGcifQ==

-> Configure other nodes to join this cluster:
* Copy the following enrollment token and start new Elasticsearch nodes with `bin/elasticsearch --enrollment-token <token>` (valid for the next 30 minutes):
  eyJ2ZXIiOiI4LjQuMyIsImFkciI6WyIxNzIuMjQuMC4yOjkyMDAiXSwiZmdyIjoiNDJkMzM3MGFkZDYxODU0MmQ1OTdhNWFmOTQzNjg3NTdjYjBjYjc5NjIzMTVjODdkMzczNzM3NTQ1YTg3MTdjNCIsImtleSI6Ik56ZWZJb1FCR3V4ZzRZMHhVQ0pQOlBWRDhNSkNRUk9DYU42cWxHMnh6TGcifQ==

  If you're running in Docker, copy the enrollment token and run:
  `docker run -e "ENROLLMENT_TOKEN=<token>" docker.elastic.co/elasticsearch/elasticsearch:8.4.3`
--------------------------------------------------------------------------------------------------------------------------------------------------------------

现在修改成docker-compose运行

文件内容如下

version: "2"
services:
    elasticsearch:
        image: docker.elastic.co/elasticsearch/elasticsearch:8.4.3
        container_name: elasticsearch
        ports:
            - "9200:9200"
            - "9300:9300"
        restart: always
        networks:
            - default
networks:
    default:
        external:
            name: elastic

然后我这样去查看日志

sudo docker logs elasticsearch

没看到我要的日志，但是有其他的日志。

Answer 1

在 docker-compose.yml 目录下用 docker-compose logs 去看，默认情况下会打印所有已有的日志，且不会持续追踪显示，可以使用 docker-compose logs -f --tail=50 仅打印最新 50 条，并持续追踪关注。