我用nginx、elasticsearch和kibana设置了docker compose，如下所示：

web:
    build:
      context: .
      dockerfile: ./system/docker/development/web.Dockerfile
    depends_on:
      - app
    volumes:
      - './system/ssl:/etc/ssl/certs'
    networks:
      - mynet
    ports:
      - 80:80
      - 443:443

  elasticsearch_1:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.7.0
    container_name: "${COMPOSE_PROJECT_NAME:-service}_elasticsearch_1"
    environment:
      - node.name=elasticsearch_1
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=elasticsearch_2,elasticsearch_3
      - cluster.initial_master_nodes=elasticsearch_1,elasticsearch_2,elasticsearch_3
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - es_volume_1:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
    networks:
      - mynet

  elasticsearch_2:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.7.0
    container_name: "${COMPOSE_PROJECT_NAME:-service}_elasticsearch_2"
    environment:
      - node.name=elasticsearch_2
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=elasticsearch_1,elasticsearch_3
      - cluster.initial_master_nodes=elasticsearch_1,elasticsearch_2,elasticsearch_3
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - es_volume_2:/usr/share/elasticsearch/data
    ports:
      - 9201:9201
    networks:
      - mynet

  elasticsearch_3:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.7.0
    container_name: "${COMPOSE_PROJECT_NAME:-service}_elasticsearch_3"
    environment:
      - node.name=elasticsearch_3
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=elasticsearch_1,elasticsearch_2
      - cluster.initial_master_nodes=elasticsearch_1,elasticsearch_2,elasticsearch_3
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - es_volume_3:/usr/share/elasticsearch/data
    ports:
      - 9202:9202
    networks:
      - mynet

  kibana:
    image: docker.elastic.co/kibana/kibana:7.7.0
    container_name: "${COMPOSE_PROJECT_NAME:-service}_kibana"
    ports:
      - 5601:5601
    environment:
      ELASTICSEARCH_URL: http://elasticsearch_1:9200
      ELASTICSEARCH_HOSTS: http://elasticsearch_1:9200
    networks:
      - mynet

volumes:
  es_volume_1: null
  es_volume_2: null
  es_volume_3: null

networks:
  mynet:
    driver: bridge
    ipam:
      config:
      - subnet: 172.18.0.0/24
        gateway: 172.18.0.1

当我使用 docker-compose up 我可以通过url访问kibana http://localhost:5601/ 但是，当我尝试使用nginx为相同的设置反向代理时，我得到了一个502坏网关错误。这是我的nginx配置文件：

server {
   listen 80;
   listen 443 ssl http2;

   ssl_certificate /ssl/localhost.crt;
   ssl_certificate_key /ssl/localhost.key;

  ...

  location /app/kibana {
     proxy_pass http://localhost:5601;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection 'upgrade';
     proxy_set_header Host $host;
     proxy_cache_bypass $http_upgrade;
  }

   location ~ /\. {    
      deny all;  
   }

   ...
}

我想做的是能够像这样访问kibana http://localhost/app/kibana . 我读过的文章（像这样）似乎更侧重于通过nginx（使用basic auth）保护kibana访问，而不是在端口80的特定路径上访问。
更新
所以，我改变了 localhost 至 kibana （正如@mikezter所建议的）现在它似乎至少能够找到kibana服务（因此没有更多的502错误）。
但是，我在浏览器调试控制台中遇到了一个空白页，其中有一些错误。经过搜索，我发现了这个位置指令：

location ~ (/app|/translations|/node_modules|/built_assets/|/bundles|/es_admin|/plugins|/api|/ui|/elasticsearch|/spaces/enter) {
         proxy_pass          http://kibana:5601;
         proxy_set_header    Host $host;
         proxy_set_header    X-Real-IP $remote_addr;
         proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header    X-Forwarded-Proto $scheme;
         proxy_set_header    X-Forwarded-Host $http_host;
         proxy_set_header    Authorization "";
         proxy_hide_header   Authorization;
  }

现在页面加载了，并且有一些ui，但是脚本仍然有一些问题，所以页面不能用于用户交互。