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Fixed: Nginx WebSocket configuration causing Single User Servers to miss out api requests

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DerGrumpf
2025-09-15 21:14:54 +02:00
parent a5688c071d
commit 6606b874e5
4 changed files with 26 additions and 7 deletions
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3
.env_example
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@@ -14,13 +14,14 @@ ENABLE_LAB=1
SPAWNER_DEFAULT_URL=/lab SPAWNER_DEFAULT_URL=/lab
NOTEBOOK_MEMORY_LIMIT=500M NOTEBOOK_MEMORY_LIMIT=500M
NOTEBOOK_CPU_LIMIT=1.0 NOTEBOOK_CPU_LIMIT=1.0
NOTEBOOK_IMAGE=jupyter/base-notebook:latest
HUB_IP=jupyterhub # Name of the Docker container HUB_IP=jupyterhub # Name of the Docker container
DOCKER_NOTEBOOK_DIR=/home/jovyan/work DOCKER_NOTEBOOK_DIR=/home/jovyan/work
DOCKER_SPAWNER_DEBUG=0 # Set to non Zero to enable DOCKER_SPAWNER_DEBUG=0 # Set to non Zero to enable
# Docker # Docker
COMPOSE_PROJECT_NAME=ifn_stack COMPOSE_PROJECT_NAME=ifn_stack
DOCKER_NETWORK_NAME=jupyter_network DOCKER_NETWORK_NAME=jupyterhub-network
POSTGRES_PORT=5432 POSTGRES_PORT=5432
JUPYTERHUB_PORT=8000 JUPYTERHUB_PORT=8000
NGINX_HTTP_PORT=8080 NGINX_HTTP_PORT=8080

16
jupyterhub/jupyterhub_config.py
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@@ -65,16 +65,24 @@ port = int(os.environ.get("JUPYTERHUB_PORT", "8000"))
base_url = os.environ.get("JUPYTERHUB_BASE_URL", "/jupyter/") base_url = os.environ.get("JUPYTERHUB_BASE_URL", "/jupyter/")
c.JupyterHub.bind_url = f"http://0.0.0.0:{port}{base_url}" c.JupyterHub.bind_url = f"http://0.0.0.0:{port}{base_url}"
# Database configuration # Mission Critical this should be the service name not the container name
c.JupyterHub.db_url = f"postgresql://{os.environ['POSTGRES_USER']}:{os.environ['POSTGRES_PASSWORD']}@{os.environ['POSTGRES_HOST']}:5432/{os.environ['POSTGRES_DB']}" # without this option containers cant reach the api endpoint
# c.JupyterHub.db_url = 'sqlite:///jupyterhub.sqlite' # this is due to nginx external rounting and might help
# migration this project to a cluster setup
c.JupyterHub.hub_connect_ip = "jupyterhub"
# Database configuration
p_user = os.environ["POSTGRES_USER"]
p_pass = os.environ["POSTGRES_PASSWORD"]
p_host = os.environ["POSTGRES_HOST"]
p_db = os.environ["POSTGRES_DB"]
c.JupyterHub.db_url = f"postgresql://{p_user}:{p_pass}@{p_host}:5432/{p_db}"
# c.JupyterHub.db_url = 'sqlite:///jupyterhub.sqlite'
# Authenticator configuration - NativeAuthenticator # Authenticator configuration - NativeAuthenticator
c.JupyterHub.authenticator_class = NativeAuthenticator c.JupyterHub.authenticator_class = NativeAuthenticator
# Native Authenticator settings # Native Authenticator settings
# c.NativeAuthenticator.create_system_users = True
c.NativeAuthenticator.minimum_password_length = int( c.NativeAuthenticator.minimum_password_length = int(
os.environ.get("NATIVE_AUTH_MIN_PASSWORD_LENGTH", "8") os.environ.get("NATIVE_AUTH_MIN_PASSWORD_LENGTH", "8")
) )

7
nginx/conf.d/jupyterhub.conf
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@@ -1,4 +1,3 @@
# nginx/conf.d/jupyterhub.conf
server { server {
listen 80; listen 80;
server_name _; # Respond to all hostnames server_name _; # Respond to all hostnames
@@ -14,8 +13,12 @@ server {
# WebSocket support (crucial for Jupyter) # WebSocket support (crucial for Jupyter)
proxy_http_version 1.1; proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade; proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade"; proxy_set_header Connection $connection_upgrade;
proxy_read_timeout 86400; proxy_read_timeout 86400;
proxy_send_timeout 86400;
# Disable buffering for WebSocket
proxy_buffering off;
# Handle large file uploads # Handle large file uploads
client_max_body_size 100M; client_max_body_size 100M;

7
nginx/nginx.conf
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@@ -11,6 +11,13 @@ http {
include /etc/nginx/mime.types; include /etc/nginx/mime.types;
default_type application/octet-stream; default_type application/octet-stream;
# WebSocket connection mapping
map $http_upgrade $connection_upgrade {
default upgrade;
'' close;
}
# Log format # Log format
log_format main '$remote_addr - $remote_user [$time_local] "$request" ' log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" ' '$status $body_bytes_sent "$http_referer" '