DialContext error: dial tcp & Serve tunnel error Cloudflare Tunnels

Hello,

I am getting errors like below on few tunnels, sometimes web apps returning errors in browser - any idea how debug this issue?

Our infra:

web browser <-> Cloudflare edge <-> cloudflared on EC2 in AWS VPS <-> internal apps

cloudflared version 2022.2.0 (built 2022-02-04-1115 UTC)

no QUIC enabled

Errors every 1-2 hours, sometimes every 10-20 minutes if a lot of users use web apps:

{“level”:“warn”,“connIndex”:3,“error”:“DialContext error: dial tcp 198.41.192.47:7844: i/o timeout”,“time”:“2022-02-18T21:14:43Z”,“message”:“Unable to establish connection with Cloudflare edge”}
{“level”:“warn”,“connIndex”:3,“error”:“DialContext error: dial tcp 198.41.192.47:7844: i/o timeout”,“time”:“2022-02-18T21:14:43Z”,“message”:“Serve tunnel error”}
{“level”:“info”,“connIndex”:3,“time”:“2022-02-18T21:14:43Z”,“message”:“Retrying connection in up to 4s seconds”}
{“level”:“info”,“connIndex”:3,“location”:“FRA”,“time”:“2022-02-18T21:14:48Z”,“message”:“Connection 92ee812b-de85-4164-a19f-13bf514ea060 registered”}

{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T09:36:37Z”,“message”:“Lost connection with the edge”}
{“level”:“warn”,“connIndex”:1,“error”:“connection with edge closed”,“time”:“2022-02-19T09:36:37Z”,“message”:“Serve tunnel error”}
{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T09:36:37Z”,“message”:“Retrying connection in up to 1s seconds”}
{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T09:36:37Z”,“message”:“Unregistered tunnel connection”}
{“level”:“info”,“connIndex”:1,“location”:“FRA”,“time”:“2022-02-19T09:36:38Z”,“message”:“Connection 72b7d026-10c1-4f8b-b88f-4c720993cbb9 registered”}
{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T11:39:20Z”,“message”:“Lost connection with the edge”}
{“level”:“warn”,“connIndex”:1,“error”:“connection with edge closed”,“time”:“2022-02-19T11:39:20Z”,“message”:“Serve tunnel error”}
{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T11:39:20Z”,“message”:“Retrying connection in up to 1s seconds”}
{“level”:“info”,“connIndex”:1,“time”:“2022-02-19T11:39:20Z”,“message”:“Unregistered tunnel connection”}
{“level”:“info”,“connIndex”:1,“location”:“FRA”,“time”:“2022-02-19T11:39:21Z”,“message”:“Connection b52241c4-aedb-40f4-b206-1754751f29f4 registered”}

Config.yml:

logfile: /var/log/cloudflared/APPlog

tunnel: APP
credentials-file: /root/.cloudflared/APP.json
grace-period: 5s
ingress:

Hello any ideas?

This is best suited for a support ticket, since we cannot diagnose a specific error in a generic way without the account, tunnel ID and cloudflared logs.