Unable to load image layer via localhost in Angular

arahman_mdmajid

 

I am trying to add three layer with different capability in a map viewer. All layers were loading just fine. The other day serving the code again two layer are unable to load and getting image load error and internal server error.

let layer1 = new MapImageLayer({
  //Public
  url: "https://<domain-url>:6443/arcgis/rest/services/Governorates/<layer1>/MapServer"
});
map.add(layer1);
let layer2 = new FeatureLayer({
  //Public
  url: "https://<domain-url>:6443/arcgis/rest/services/Governorates/<layer2>/FeatureServer/0"
});
map.add(layer2);
urlUtils.addProxyRule({
  urlPrefix: "https://<domain-url>:6443/arcgis/rest/services/Public/<layer3>/MapServer",
  proxyUrl: "https://<app-hosting-url>/Proxy/proxy.ashx"
});
const layer3 = new FeatureLayer({
  //Private
  url: "https://<domain-url>:6443/arcgis/rest/services/Public/<layer3>/MapServer"
});
map.add(layer3);

 

Layer 1 and layer 3 are giving the following error

[esri.views.2d.layers.MapImageLayerView2D]
{name: 'mapimagelayer:image-fetch-error', details: {…}, message: 'Unable to load image: https://<domain-url>:6…st/services/Governorates/<layer1>/MapServer/export'} 

While layer 2 is loading just fine. I restarted ArcGIS Server also an the problem went away momentarily but its happening again.

arahman_mdmajid

After a lengthy discussion and diligent investigation by the ESRI Saudi Arabia team and another system analyst from ESRI, we were able to solve the problem.

The main issue was that too many unnecessary services were running, and the default minimum instance setting inside pooling was set to 1. So the server was reaching its maximum capacity and was crashing during midnight and was unable to instantiate the services. At max, were running around 180 ArcSOC services, so you can imagine the load on the CPU. I used the following command in Windows's Command Prompt to find the number of processes running.

tasklist | find /I /C "ArcSOC.exe"

Two main articles helped us in understanding the problem in detail. I have linked them below,

Introducing shared instances in ArcGIS Server 

Anticipating and accommodating users 

Since we were using the ArcGIS Server version 10.6, we could not use the shared instance pool.

To solve the issue, we determined the critical services by analyzing their demand from Server statistics. We set the Minimum number of instances per machine to 0 for unimportant services. After configuring all the services, our ArcSOC count looked something like this,

 

Thank you to everyone who helped with the process, including @DebendraBiswas