Created question in FIWARE Q/A platform on 27-05-2018 at 16:05
Please, ANSWER this question AT https://stackoverflow.com/questions/50553119/econnreset-when-opening-a-large-number-of-connection-in-small-time-period

Question:
ECONNRESET when opening a large number of connection in small time period

Description:
I have situation where i want to create large number of entities on orion. I am using docker version of orion and mongo with this docker-compose.

version: "3"
services:
mongo:
image: mongo:3.4
volumes:

• /data/docker-mongo/db:/data/db
• /data/docker-mongo/log/mongodb.log:/var/log/mongodb/mongod.log
  command: --nojournal
  orion:
  image: fiware/orion
  volumes:
• /data/docker-mongo/log/contextBroker.log:/tmp/contextBroker.log
  links:
• mongo
  ports:
• "1026:1026"
  command: -dbhost mongo

Now problems happens when i want to upload 2000 entities ( opening new connection for each, i know it can be done different but for now this is request), i successfully create no more than 600 (or less never exact number) of them rest fail to create with error:

"error":

,

So i assume this issue has something to do with maxConnections, reqPoolSize etc settings in Orion. But in docker i failed to locate Orion config file, i have no way of knowing when i type commands like contextBroker -maxConnections 123456 that setting is being accepted by Orion and docker container.

Also log of Orion is empty, and i cannot determined what is causing this issue when Orion is running on docker.

So main questions:

• Can Orion running on docker be used in same manner as Orion running on VM (are there some fallbacks)
• And how do i check this problem when Orion is running in docker, because i read a lot of docs/issues but no luck ( or i missed something).

If u have some advice/soultion it would really help.
Thanks