当尝试在magento 2.4中搜索产品时，返回以下错误
异常#0（elasticsearch\common\exceptions\nonodesavailableexception）：在集群中找不到活动节点
以下配置：
php 7.4.1版
nginx 1.14型
mysql 8版
ElasticSearch7.9
/etc/nginx/conf.d/100-magento2.conf文件

upstream fastcgi_backend {
    server   unix:/run/php-fpm/www.sock;
}
server {
  listen 80;
  server_name _;

  set $MAGE_ROOT /var/www/magento2;
  include /var/www/magento2/nginx.conf.sample;

}

/etc/nginx/conf.d/90-es.conf文件

upstream   elasticsearch {
   server 127.0.0.1:9200;
}

server {
   server_name _;
   listen 8080;
   location / {
     limit_except HEAD {
        auth_basic "Restricted";
        auth_basic_user_file  /etc/nginx/passwd/.esnginx;
     }
     proxy_pass http://127.0.0.1:9200;
     proxy_redirect off;
     proxy_set_header Host $host;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  location /_aliases {
   auth_basic "Restricted";
   auth_basic_user_file  /etc/nginx/passwd/.esnginx;
   proxy_pass http://127.0.0.1:9200;
   proxy_redirect off;
   proxy_set_header Host $host;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }

  include /etc/nginx/auth/*.conf;
}

如果尝试：bin/magentoconfig:show catalog/search/engine
结果：elasticsearch7
如果尝试：curl-ilocalhost:9200/_cluster/health?pretty

HTTP/1.1 200 OK
content-type: application/json; charset=UTF-8
content-length: 461

{
  "cluster_name" : "magento2",
  "status" : "yellow",
  "timed_out" : false,
  "number_of_nodes" : 1,
  "number_of_data_nodes" : 1,
  "active_primary_shards" : 3,
  "active_shards" : 3,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 3,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 50.0
}

如果在网上试一试：
按web配置
elasticsearch.yml:ElasticSearch.yml