perfSONAR User Q&A and Other Discussion

[Tim Chown <>]

Hi,

We recently noticed seeing such errors when looking at a specific result (square) in a mesh.  It seems that this error happens when the destination server has no results in its own mesh row:

“Error loading data. Error retrieving data. Error contacting esmond archive” 

If the destination has populated its own data, then it’s fine, which would imply it’s not an http/https thing, rather to do with availability of results.

Tim

On 7 Nov 2023, at 14:54, Andrew Lake <> wrote:

Hi Phil,

That is usually due to a mixture of HTTP and HTTPS. I think it might be due to the fact your esmond URL is http:// whereas you are likely visiting MaDDash using an https address. It’s usually either the esmond URL or the graph URL…but the graph URL is a relative path by default so that suavely only breaks if someone changes it. 

Hope that helps,

Andy

On November 6, 2023 at 5:57:21 PM, Phil Reese () wrote:

Hi, 

I feel like this has been asked a number of times but I couldn't easily  
find the answer. 

My perfSONAR 5 MaDDash grid is working well, reflecting real up/down  
state of the net.  Using Archive, I can see the history graphs between  
various hosts. 

BUT, when I click on one of the small green squares, The graphs page  
opens, as it should, but in the lower portion of the page is a red  
banner, with Error Loading Data. (and no graphs appear).  Also the  
Source and Destination blocks are empty. 

Things tried, disable selinux, checked opensearch is happy, tried it on  
a different OS version, (both R9 and D10 have the same issue). 

Suggestions anyone? 

Phil 

A minimized json file only looking at RTT, this file is 'published' and  
'remote add' on MaDDash server.  Archive and MaDDash are on the same system 
{ 
  "_meta": { 
    "display-name": "ps-v5-grid" 
  }, 
  "archives": { 
    "opensearch-archive": { 
      "archiver": "http", 
      "data": { 
        "schema": 3, 
        "_url": "http://192.168.0.34/logstash", 
        "verify-ssl": false, 
        "op": "put", 
        "_headers": { 
          "x-ps-observer": "{% scheduled_by_address %}", 
          "content-type": "application/json" 
        } 
      }, 
      "_meta": { 
        "esmond_url": "http://192.168.0.34/esmond/perfsonar/archive/" 
      } 
    } 
  }, 
  "addresses": { 
    "ps1": { 
      "address": "192.168.0.31" 
    }, 
    "ps2": { 
      "address": "192.168.0.32" 
    }, 
    "ps3": { 
      "address": "192.168.0.33" 
    } 
  }, 
  "groups": { 
    "Home_group_mesh": { 
      "type": "mesh", 
      "addresses": [ 
        { 
          "name": "ps1" 
        }, 
        { 
          "name": "ps2" 
        }, 
        { 
          "name": "ps3" 
        } 
      ] 
    } 
  }, 
  "tests": { 
    "test_rtt": { 
      "type": "rtt", 
      "spec": { 
        "source": "{% address[0] %}", 
        "dest": "{% address[1] %}", 
        "count": 10, 
        "interval": "PT1S", 
        "length": 1000 
      } 
    } 
  }, 
  "schedules": { 
    "Home_schedule_PT10M": { 
      "repeat": "PT10M", 
      "sliprand": true, 
      "slip": "PT10M" 
    } 
  }, 
  "tasks": { 
    "MD-PS5-task_rtt": { 
      "group": "Home_group_mesh", 
      "test": "test_rtt", 
      "schedule": "Home_schedule_PT10M", 
      "archives": [ 
        "opensearch-archive" 
      ], 
      "_meta": { 
        "display-name": "MD-PS5-All to All-2" 
      } 
    } 
  } 
} 

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