Docker exec timeout

[uqpik]

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Hi,

all docker exec commands that are executed via the API, return an error if they are running longer than exact 30 minutes.
I would be very grateful for any help.

Best regards

[uqpik]

It seems the problem is related to the portainer agent. Using the docker socket connection, there is no timeout.

[Nick-Portainer]

Hi @uqpik Can you please give me an example of the API calls you are using, also is your Portainer environment behind a proxy?

[uqpik]

There is no proxy involved.

Sample shell script:

#!/bin/bash

# Wait for 31 minutes (1860 seconds)
sleep 1860

echo "31 minutes have passed."

Code Fragment:

    String envId = DockerAccessor.getEnviromentId(url, environment, accessToken);
    
    // create exe command
    URI uri = new URI(url+"/api/endpoints/"+envId+"/docker/containers/"+URLEncoder.encode(container, StandardCharsets.UTF_8) + "/exec");
    JSONObject rdata = new JSONObject()  
      .element("AttachStdin", false)  
      .element("AttachStdout", true)
      .element("AttachStderr", true)
      .element("Cmd", new String[]{"sh","-c", command});
    
    String execId = JSONObject.fromObject(doRequest(uri, accessToken, BodyPublishers.ofString(rdata.toString()), BodyHandlers.ofString(), "Exec", null)).getString("Id");
    
    // start exec command using the id from the latest response
    uri = new URI(url+"/api/endpoints/"+envId+"/docker/exec/" + execId + "/start");
    rdata = new JSONObject()  
      .element("Detach", false);  
    InputStream is = (InputStream) doRequest(uri, accessToken, BodyPublishers.ofString(rdata.toString()), BodyHandlers.ofInputStream(), "Start", null);
    
    DockerMultiplexedInputStream mis = new DockerMultiplexedInputStream(is);
    String res = new String(mis.readAllBytes(), StandardCharsets.UTF_8);

[Nick-Portainer]

Can you please check the agent as well as your Portainer server for any logs that may have additional information you can share?

[uqpik]

I searched all logs, no helpfull message.

[Nick-Portainer]

Could you try using the websocket instead? For example create exec instance, like you already are then websocket on wss://domain/api/websocket/exec https://app.swaggerhub.com/apis/portainer/portainer-ce/2.21.5#/websocket/get_websocket_exec