High Cpu node 100%

[maxthetor]

Description:

from time to time our rocket stops working.
today analyzing better, we noticed an abnormal traffic
coming from the IP address 51.81.47.27.

when blocking this address and restarting the rocket everything is normal.
When we unlock this IP, the node returns to 100% cpu. when this happens the rocket stops working.

this IP address seems to be from the rocket cloud.
what's the logic?

de vez em quando nosso rocket para de funcionar.
hoje analisando melhor, percebemos um trafego anormal
vindo do endereco IP 51.81.47.27.

ao bloquear esse endereco e reiniciar o rocket tudo fica normal.
qunado desbloqueamos esse IP, o node volta a ficar com 100% de cpu. quando isso acontece o rocket para de funcionar.

esse endereco IP parece ser do rocket cloud.
qual a logica?

Steps to reproduce:

1. if the rocket stops working, and the node is at 100%
2. tcpdump -n -i eth0 net 51.81.0.0/16
3. netstat -anp | grep 51.81.47.27 | cat -n
   (69 tcp 0 0 177.22.32.247:443 51.81.47.27:31706 ESTABELECIDA 3842/nginx: worker)

Expected behavior:

rocket stops working

Server Setup Information:

• Version of Rocket.Chat Server: 3.18.3
• Operating System: Ubuntu 16.04.4 LTS
• Deployment Method: snap
• Number of Running Instances: 1
• DB Replicaset Oplog:
• NodeJS Version: 12.22.1 - x64
• MongoDB Version: 3.6.14

Relevant logs:

when the node is at 100% cpu, no log is generated

[LuluGO]

Hello, thanks for reporting this, do you use any omnichannel app in your server? for example facebook, twitter, instagram, whatsapp, etc.

[maxthetor]

yes

[nileshA-addweb]

+1

We are also getting same issue where RC server and client versions are as below. We are using Docker based RC setup in single EC2 (2vCPU, 8GB RAM, 80G SSD Disk)

Server Setup Information:

Version of Rocket.Chat Server: 6.2.2
Operating System: Ubuntu 20.04.6 LTS
Deployment Method: Docker
Number of Running Instances: 1
DB Replicaset Oplog: Yes
NodeJS Version: 14.21.2 - x64
MongoDB Version: 5.0.15
MongoDB Engine: wiredTiger
USE_NATIVE_OPLOG=true

Client Setup Information

Desktop App: App 3.8.13
Operating System: Ubuntu 22.04.2 LTS

[nileshA-addweb]

Can anyone help here to overcome this issue which is happening anytime on random basis?