Hey everyone,
I’m encountering a persistent issue with the “Code in Python (Native) (Beta)” node in n8n, and I’d greatly appreciate some help troubleshooting it.
Problem Description:
After deploying and setting up a task runner alongside my n8n instance, I consistently receive the following error message in the n8n UI when trying to execute a “Code in Python (Native) (Beta)” node:
Problem in node ‘Code in Python (Native) (Beta)‘ To use native Python, please use runners by setting N8N_RUNNERS_ENABLED=true.
This is baffling because I already have a functioning n8n worker, and I’ve explicitly set the environment variable N8N_RUNNERS_ENABLED to true on both the main n8n instance and the worker.
To further confirm, I’ve checked the worker logs, and I can see this line:
To use native Python, please use runners by setting `N8N_RUNNERS_ENABLED=true`.
It seems like the worker is somehow not recognizing that the N8N_RUNNERS_ENABLED flag is indeed set to true, even though it’s present in the environment.
Below is the redacted Zeabur (a PaaS hosting/deployment platform) YAML file template for my project, which details the deployment configuration. This may help pinpoint any missed configurations or potential conflicts.
Could anyone provide some insights or suggestions on what might be causing this issue? Is there a common pitfall I might be missing, or a specific way N8N_RUNNERS_ENABLED needs to be configured in a distributed setup with task runners?
Thanks so much in advance for your help!
# yaml-language-server: $schema=https://schema.zeabur.app/template.json
apiVersion: zeabur.com/v1
kind: Template
metadata:
name: n8n-with-worker-aticne
spec:
description: Exported from project 691ae13042a1e8e7978949a6
icon: https://i.imgur.com/KUcP61Z.png
services:
- name: n8n-main
icon: https://i.imgur.com/KUcP61Z.png
template: PREBUILT_V2
spec:
source:
image: docker.io/n8nio/n8n:latest
ports:
- id: web
port: 5678
type: HTTP
- id: port-5679
port: 5679
type: HTTP
volumes:
- id: data
dir: /root/.n8n
instructions:
- title: N8N ENCRYPTION KEY
content: ${N8N_ENCRYPTION_KEY}
env:
DB_POSTGRESDB_DATABASE:
default: ${POSTGRES_DB}
expose: false
DB_POSTGRESDB_HOST:
default: ${POSTGRES_HOST}
expose: false
DB_POSTGRESDB_PASSWORD:
default: ${POSTGRES_PASSWORD}
expose: false
DB_POSTGRESDB_PORT:
default: ${POSTGRES_PORT}
expose: false
DB_POSTGRESDB_USER:
default: ${POSTGRES_USERNAME}
expose: false
DB_TYPE:
default: postgresdb
expose: false
EXECUTIONS_MODE:
default: queue
expose: false
EXPRESS_TRUST_PROXY:
default: "true"
expose: false
GENERIC_TIMEZONE:
default: "****"
expose: false
N8N_ENCRYPTION_KEY:
default: ${PASSWORD}
expose: false
N8N_ENCRYPTION_KEY_WORKER:
default: ${N8N_ENCRYPTION_KEY}
expose: true
N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS:
default: "true"
expose: false
N8N_EXPRESS_TRUST_PROXY:
default: "true"
expose: false
N8N_HOST:
default: ${ZEABUR_WEB_DOMAIN}
expose: false
N8N_NATIVE_PYTHON_RUNNER:
default: "true"
expose: false
N8N_RUNNERS_AUTH_TOKEN:
default: "****"
expose: false
N8N_RUNNERS_BROKER_LISTEN_ADDRESS:
default: 0.0.0.0
expose: false
N8N_RUNNERS_BROKER_LOG_LEVEL:
default: info
expose: false
N8N_RUNNERS_BROKER_PORT:
default: "5679"
expose: false
N8N_RUNNERS_ENABLED:
default: "true"
expose: true
N8N_RUNNERS_MODE:
default: external
expose: false
NODE_ENV:
default: production
expose: false
NODE_FUNCTION_ALLOW_BUILTIN:
default: "*"
expose: false
OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS:
default: "true"
expose: false
PUBLIC_DOMAIN:
default: automatus
expose: false
QUEUE_BULL_REDIS_HOST:
default: ${REDIS_HOST}
expose: false
QUEUE_BULL_REDIS_PASSWORD:
default: ${REDIS_PASSWORD}
expose: false
QUEUE_BULL_REDIS_PORT:
default: ${REDIS_PORT}
expose: false
REDIS_PASSWORD:
default: "****"
expose: false
TZ:
default: "****"
expose: false
WEBHOOK_URL:
default: "****"
expose: false
configs: []
portForwarding:
enabled: false
- name: n8n-worker
icon: https://i.imgur.com/KUcP61Z.png
template: PREBUILT_V2
spec:
source:
image: docker.io/n8nio/n8n:latest
command:
- /bin/sh
args:
- -c
- n8n worker
volumes:
- id: data
dir: /root/.n8n
env:
DB_POSTGRESDB_DATABASE:
default: ${POSTGRES_DB}
expose: false
DB_POSTGRESDB_HOST:
default: ${POSTGRES_HOST}
expose: false
DB_POSTGRESDB_PASSWORD:
default: ${POSTGRES_PASSWORD}
expose: false
DB_POSTGRESDB_PORT:
default: ${POSTGRES_PORT}
expose: false
DB_POSTGRESDB_USER:
default: ${POSTGRES_USERNAME}
expose: false
DB_TYPE:
default: postgresdb
expose: false
EXECUTIONS_MODE:
default: queue
expose: false
GENERIC_TIMEZONE:
default: "****"
expose: false
N8N-MAIN_PASSWORD:
default: "****"
expose: false
N8N_ENCRYPTION_KEY:
default: ${N8N_ENCRYPTION_KEY_WORKER}
expose: false
N8N_ENFORCE_SETTINGS_FILE_PERMISSIONS:
default: "true"
expose: false
N8N_HOST:
default: ${ZEABUR_WEB_DOMAIN}
expose: false
N8N_RUNNERS_AUTH_TOKEN:
default: "****"
expose: false
N8N_RUNNERS_ENABLED:
default: "true"
expose: false
N8N_RUNNERS_MODE:
default: external
expose: false
NODE_ENV:
default: production
expose: false
NODE_FUNCTION_ALLOW_BUILTIN:
default: "*"
expose: false
PUBLIC_DOMAIN:
default: "****"
expose: false
QUEUE_BULL_REDIS_HOST:
default: ${REDIS_HOST}
expose: false
QUEUE_BULL_REDIS_PASSWORD:
default: ${REDIS_PASSWORD}
expose: false
QUEUE_BULL_REDIS_PORT:
default: ${REDIS_PORT}
expose: false
REDIS_PASSWORD:
default: "****"
expose: false
WEBHOOK_URL:
default: ${ZEABUR_WEB_URL}
expose: false
configs: []
- name: Redis
icon: https://raw.githubusercontent.com/zeabur/service-icons/main/marketplace/redis.svg
template: PREBUILT_V2
spec:
source:
image: redis/redis-stack-server:latest
ports:
- id: database
port: 6379
type: TCP
volumes:
- id: data
dir: /data
instructions:
- title: Command to connect to your Redis
content: redis-cli -h ${PORT_FORWARDED_HOSTNAME} -p ${DATABASE_PORT_FORWARDED_PORT} -a ${REDIS_PASSWORD}
- title: Redis Connection String
content: redis://:${REDIS_PASSWORD}@${PORT_FORWARDED_HOSTNAME}:${DATABASE_PORT_FORWARDED_PORT}
- title: Redis password
content: ${REDIS_PASSWORD}
- title: Redis host
content: ${PORT_FORWARDED_HOSTNAME}
- title: Redis port
content: ${DATABASE_PORT_FORWARDED_PORT}
env:
PUBLIC_DOMAIN:
default: "****"
expose: false
REDIS_ARGS:
default: --requirepass ${REDIS_PASSWORD}
expose: false
REDIS_CONNECTION_STRING:
default: redis://:${REDIS_PASSWORD}@${REDIS_HOST}:${REDIS_PORT}
expose: true
REDIS_HOST:
default: ${CONTAINER_HOSTNAME}
expose: true
REDIS_PASSWORD:
default: ${PASSWORD}
expose: true
REDIS_PORT:
default: ${DATABASE_PORT}
expose: true
REDIS_URI:
default: ${REDIS_CONNECTION_STRING}
expose: true
configs: []
portForwarding:
enabled: true
- name: postgresql
icon: https://raw.githubusercontent.com/zeabur/service-icons/main/marketplace/postgresql.svg
template: PREBUILT_V2
spec:
source:
image: postgres:17
command:
- docker-entrypoint.sh
- -c
- config_file=/etc/postgresql/postgresql.conf
ports:
- id: database
port: 5432
type: TCP
volumes:
- id: data
dir: /var/lib/postgresql/data
instructions:
- title: Connection String
content: postgresql://${POSTGRES_USERNAME}:${POSTGRES_PASSWORD}@${PORT_FORWARDED_HOSTNAME}:${DATABASE_PORT_FORWARDED_PORT}/${POSTGRES_DATABASE}
- title: PostgreSQL Connect Command
content: psql "postgresql://${POSTGRES_USERNAME}:${POSTGRES_PASSWORD}@${PORT_FORWARDED_HOSTNAME}:${DATABASE_PORT_FORWARDED_PORT}/${POSTGRES_DATABASE}"
- title: PostgreSQL username
content: ${POSTGRES_USERNAME}
- title: PostgresSQL password
content: ${POSTGRES_PASSWORD}
- title: PostgresSQL database
content: ${POSTGRES_DATABASE}
- title: PostgreSQL host
content: ${PORT_FORWARDED_HOSTNAME}
- title: PostgreSQL port
content: ${DATABASE_PORT_FORWARDED_PORT}
env:
N8N-MAIN_PASSWORD:
default: "****"
expose: false
N8N-WORKER_PASSWORD:
default: "****"
expose: false
N8N_MAIN_HOST:
default: "****"
expose: false
N8N_WORKER_HOST:
default: "****"
expose: false
PGDATA:
default: /var/lib/postgresql/data/pgdata
expose: false
POSTGRES_CONNECTION_STRING:
default: postgresql://${POSTGRES_USERNAME}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DATABASE}
expose: false
POSTGRES_DATABASE:
default: ${POSTGRES_DB}
expose: true
POSTGRES_DB:
default: zeabur
expose: true
POSTGRES_HOST:
default: ${CONTAINER_HOSTNAME}
expose: true
POSTGRES_PASSWORD:
default: ${PASSWORD}
expose: true
POSTGRES_PORT:
default: ${DATABASE_PORT}
expose: true
POSTGRES_URI:
default: ${POSTGRES_CONNECTION_STRING}
expose: true
POSTGRES_USER:
default: root
expose: false
POSTGRES_USERNAME:
default: ${POSTGRES_USER}
expose: true
PUBLIC_DOMAIN:
default: "****"
expose: false
REDIS_HOST:
default: "****"
expose: false
REDIS_PASSWORD:
default: "****"
expose: false
configs:
- path: /etc/postgresql/postgresql.conf
template: |
# https://github.com/postgres/postgres/blob/master/src/backend/utils/misc/postgresql.conf.sample
listen_addresses = '*'
max_connections = 100
shared_buffers = 128MB
dynamic_shared_memory_type = posix
max_wal_size = 1GB
min_wal_size = 80MB
log_timezone = 'Etc/UTC'
datestyle = 'iso, mdy'
timezone = 'Etc/UTC'
lc_messages = 'en_US.utf8'
lc_monetary = 'en_US.utf8'
lc_numeric = 'en_US.utf8'
lc_time = 'en_US.utf8'
default_text_search_config = 'pg_catalog.english'
permission: null
envsubst: null
portForwarding:
enabled: true
- name: n8n-runner
icon: https://cdn.zeabur.com/prebuilt.svg
template: PREBUILT_V2
spec:
source:
image: n8nio/runners:latest
env:
N8N_RUNNERS_AUTH_TOKEN:
default: "****"
expose: false
N8N_RUNNERS_BROKER_HOST:
default: "****"
expose: false
N8N_RUNNERS_BROKER_PORT:
default: "5679"
expose: false
N8N_RUNNERS_TASK_BROKER_URI:
default: "****"
expose: false
configs: []
