mongoDB node connection problem

General
1

It seems mongoDB node doesn't close connection properly.
Is there any fix or way to use connection pool ?

azureuser@VM-ivision-ubuntu-16:~$ netstat -a | grep 27017
tcp 0 0 *:27017 : LISTEN
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:42632 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:50134 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:47632 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:46454 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:47164 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:44194 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:52002 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:43160 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:42634 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:41814 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:36608 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:55438 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:47800 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:46132 ESTABLISHED
.....
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:47808 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:51494 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:44590 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:49948 ESTABLISHED
tcp 0 0 vm-ivision-ubuntu:27017 52.231.166.176:43086 ESTABLISHED
unix 2 [ ACC ] STREAM LISTENING 11166903 /tmp/mongodb-27017.sock

azureuser@VM-ivision-ubuntu-16:~$ netstat -a | grep 27017 | wc -l
258

I'm using following node for mongoDB
image

2

[Solved]
by replacing node-red-node-mongodb by node-red-contrib-mongodb
Now I could see constant connection count as following.

image

image
image932×543 15.2 KB

network traffic is really goingdown.

image
image1606×621 24.6 KB

3

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