HTTP Status Code Monitoring

Context

When an external system accesses Elasticsearch through the HTTP protocol, a response and the corresponding status code are returned. The open-source Elasticsearch server does not collect the status code, so users cannot monitor Elasticsearch APIs status or cluster request status. CSS allows you to monitor the HTTP status codes of clusters.

Prerequisites

Currently, only clusters of versions 7.6.2 support HTTP status code monitoring.

Obtaining Status Codes

1. Log in to the CSS management console.
2. Choose Clusters in the navigation pane. On the Clusters page, locate the target cluster and click Access Kibana in the Operation column.
3. In the navigation tree on the left, choose Dev Tools.
4. On the console page of Dev Tools, run commands based on the cluster version.
   • For clusters of version 7.6.2, run the following command to obtain the status code statistics:

     GET /_nodes/http_stats

     Example response:

     {   
         "_nodes" : {     
           "total" : 1,    
           "successful" : 1,     
           "failed" : 0   },  
          "cluster_name" : "css-8362",   
          "nodes" : {     
           "F9IFdQPARaOJI7oL7HOXtQ" : {       
              "http_code" : {        
                 "200" : 114,        
                 "201" : 5,        
                 "429" : 0,       
                 "400" : 7,         
                 "404" : 0,        
                 "405" : 0      
                }     
              }   
           }
      }

   • For clusters of version 7.10.2, run the following command to obtain the status code statistics:

     GET _nodes/stats/http 

     Example response:

     {
     // ...
       "cluster_name" : "css-2985",
       "nodes" : {
     // ...
         "omvR9_W-TsGApraMApREjA" : {
     
     // ...
           "http" : {
             "current_open" : 4,
             "total_opened" : 37,
             "http_code" : {
               "200" : 25,
               "201" : 7,
               "429" : 0,
               "400" : 3,
               "404" : 0,
               "405" : 0
             }
           }
         }
       }
     }