Starting today I found a lot of PU02 errors in the logs

[alejandro963]

2025-11-28T19:12:20Z app[e784e771b29ed8] dfw [info]I, [2025-11-28T19:12:20.009498 #654]  INFO – : [60ad5cd9-ae71-4ce6-8a29-e3fe8bf67ac8] Completed 200 OK in 25ms (Views: 9.6ms | ActiveRecord: 6.5ms (6 queries, 0 cached) | GC: 0.8ms)
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:55Z proxy[e784e771b29ed8] gru [error][PU02] could not complete HTTP request to instance: connection error: connection reset
2025-11-28T19:12:58Z app[e784e771b29ed8] dfw [info]I, [2025-11-28T19:12:58.303151 #708]  INFO – : [46ea0cf3-42eb-4a8c-9ddb-824bab6c1412] Started GET “/counterparty_accounts/16/suppliers” for 186.127.89.125 at 2025-11-28 19:12:58 +0000
2025-11-28T19:12:58Z app[e784e771b29ed8] dfw [info]I, [2025-11-28T19:12:58.305429 #708]  INFO – : [46ea0cf3-42eb-4a8c-9ddb-824bab6c1412] Processing by Finance::CounterpartyAccountsController#show as HTML

Any suggestion is welcome.

ty

Alejandro.

[halfer]

Possibly related: Sometimes we have PU02 errors without any reason

[alejandro963]

Thanks for taking time to review this issue. In my case the toml file seems to be correct.

# fly.toml app configuration file generated for simple-erp on 2023-06-12T23:58:09-03:00
#
# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
#

app = "simple-erp"
primary_region = "dfw"
console_command = "/rails/bin/rails console"

[processes]
  app = "bin/rails server -b 0.0.0.0"
  job = "bundle exec good_job start"

[http_service]
  processes = ["app"]
  internal_port = 3000
  force_https = true
  auto_stop_machines = "suspend"
  auto_start_machines = true
  min_machines_running = 0

[[statics]]
  guest_path = "/rails/public"
  url_prefix = "/"

[deploy]
  release_command = "./bin/rails db:prepare"

[[vm]]
  cpu_kind = "shared"
  cpus = 1
  memory_mb = 1024

It seems to be a network issue because it is reported in a proxy running in gru region