502 Bad Gateway in GAE with Django, & Log say "libBLT.2.5.so.8.6 No such file or directory"
Question:
- Django 4.0.4
- Python 3.8.9
I deployed Django App to GAE.
But I got "502 Bad Gateway" error. And I checked server logs. That is below.
Traceback (most recent call last):
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
worker.init_process()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/workers/base.py", line 134, in init_process
self.load_wsgi()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
self.wsgi = self.app.wsgi()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
return util.import_app(self.app_uri)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/util.py", line 359, in import_app
mod = importlib.import_module(module)
File "/opt/python3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/workspace/SakeMarksV1/wsgi.py", line 16, in <module>
application = get_wsgi_application()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
django.setup(set_prefix=False)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/apps/registry.py", line 116, in populate
app_config.import_models()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/apps/config.py", line 304, in import_models
self.models_module = import_module(models_module_name)
File "/opt/python3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/workspace/website/models.py", line 1, in <module>
import turtledemo.nim
File "/opt/python3.8/lib/python3.8/turtledemo/nim.py", line 13, in <module>
import turtle
File "/opt/python3.8/lib/python3.8/turtle.py", line 107, in <module>
import tkinter as TK
File "/opt/python3.8/lib/python3.8/tkinter/__init__.py", line 36, in <module>
import _tkinter # If this fails your Python may not be configured for Tk
ImportError: libBLT.2.5.so.8.6: cannot open shared object file: No such file or directory
I’m thinking that GAE instance has no TK or gunicorn is not working.
Do anyone know about this kind of problem?
Thank you.
— app.yaml —
runtime: python38
instance_class: F1
env: standard
entrypoint: gunicorn -b :$PORT <PROJECT_NAME>.wsgi:application
includes:
- secret.yaml
handlers:
- url: /static
static_dir: static/
- url: /.*
script: auto
secure: always
automatic_scaling:
max_instances: 2
— settings/base.py —
from pathlib import Path
import os
from dotenv import load_dotenv
load_dotenv()
BASE_DIR = Path(__file__).resolve().parent.parent.parent
AUTH_USER_MODEL = 'website.User'
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'website',
'widget_tweaks',
'social_django',
'corsheaders',
'django_cleanup',
'stdimage',
'storages',
]
MIDDLEWARE = [
'django.middleware.gzip.GZipMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'social_django.middleware.SocialAuthExceptionMiddleware',
]
CORS_ORIGIN_ALLOW_ALL = True
ROOT_URLCONF = '<PROJECT_NAME>.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [BASE_DIR / 'templates']
,
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
'social_django.context_processors.backends',
'social_django.context_processors.login_redirect',
],
},
},
]
WSGI_APPLICATION = '<PROJECT_NAME>.wsgi.application'
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
AUTHENTICATION_BACKENDS = (
'social_core.backends.open_id.OpenIdAuth',
'social_core.backends.google.GoogleOAuth2',
'social_core.backends.facebook.FacebookOAuth2',
'django.contrib.auth.backends.ModelBackend',
)
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
LANGUAGE_CODE = 'ja'
TIME_ZONE = 'Asia/Tokyo'
USE_I18N = True
USE_TZ = True
PROJECT_NAME = os.path.basename(BASE_DIR)
STATIC_URL = 'static/'
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
STATIC_ROOT = f'var/www/{PROJECT_NAME}/static'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
LOGIN_REDIRECT_URL = 'index'
LOGOUT_REDIRECT_URL = 'index'
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
— settings/production.py —
from .base import *
SECRET_KEY = os.getenv('SECRET_KEY')
DEBUG = False
ALLOWED_HOSTS = ['<CUSTOM_DOMAIN>']
# データベース
import pymysql
pymysql.install_as_MySQLdb()
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'HOST': '/cloudsql/' + os.getenv('DB_CONNECTION_NAME'),
'USER': os.getenv('DB_USER'),
'PASSWORD': os.getenv('DB_PASSWORD'),
'NAME': os.getenv('DB_NAME'),
}
}
# ストレージ
from google.oauth2 import service_account
GS_CREDENTIALS = service_account.Credentials.from_service_account_file(
os.path.join(BASE_DIR, '<PROJECT_NAME>/settings/<CREDENTIAL_FILE>.json')
)
DEFAULT_FILE_STORAGE = 'storages.backends.gcloud.GoogleCloudStorage'
STATICFILES_STORAGE = 'storages.backends.gcloud.GoogleCloudStorage'
GS_BUCKET_NAME = os.getenv('GS_BUCKET_NAME')
GS_PROJECT_ID = '<PROJECT_NAME>'
# ソーシャルログイン
SOCIAL_AUTH_GOOGLE_OAUTH2_KEY = os.getenv('SOCIAL_AUTH_GOOGLE_OAUTH2_KEY')
SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET = os.getenv('SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET')
SOCIAL_AUTH_FACEBOOK_KEY = os.getenv('SOCIAL_AUTH_FACEBOOK_KEY')
SOCIAL_AUTH_FACEBOOK_SECRET = os.getenv('SOCIAL_AUTH_FACEBOOK_SECRET')
Answers:
Like you mentioned, the error might be from tkinter, try this:
Updated
Change your entrypoint to just
entrypoint: gunicorn -b :$PORT <PROJECT_NAME>.wsgi
Since you have an entrypoint in your app.yaml file which is run via gunicorn, you must explicitly include gunicorn in requirements.txt file
I solved this problem by myself.
There was the code import turtledemo on views.py and the library needs TK. That was the cause of the error.
PyCharm automatically added this code.
Thank you, Supun Kaihara and NoCommandLine.
- Django 4.0.4
- Python 3.8.9
I deployed Django App to GAE.
But I got "502 Bad Gateway" error. And I checked server logs. That is below.
Traceback (most recent call last):
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/arbiter.py", line 589, in spawn_worker
worker.init_process()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/workers/base.py", line 134, in init_process
self.load_wsgi()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/workers/base.py", line 146, in load_wsgi
self.wsgi = self.app.wsgi()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
self.callable = self.load()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 58, in load
return self.load_wsgiapp()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 48, in load_wsgiapp
return util.import_app(self.app_uri)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/gunicorn/util.py", line 359, in import_app
mod = importlib.import_module(module)
File "/opt/python3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/workspace/SakeMarksV1/wsgi.py", line 16, in <module>
application = get_wsgi_application()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
django.setup(set_prefix=False)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/apps/registry.py", line 116, in populate
app_config.import_models()
File "/layers/google.python.pip/pip/lib/python3.8/site-packages/django/apps/config.py", line 304, in import_models
self.models_module = import_module(models_module_name)
File "/opt/python3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
File "<frozen importlib._bootstrap>", line 991, in _find_and_load
File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 843, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/workspace/website/models.py", line 1, in <module>
import turtledemo.nim
File "/opt/python3.8/lib/python3.8/turtledemo/nim.py", line 13, in <module>
import turtle
File "/opt/python3.8/lib/python3.8/turtle.py", line 107, in <module>
import tkinter as TK
File "/opt/python3.8/lib/python3.8/tkinter/__init__.py", line 36, in <module>
import _tkinter # If this fails your Python may not be configured for Tk
ImportError: libBLT.2.5.so.8.6: cannot open shared object file: No such file or directory
I’m thinking that GAE instance has no TK or gunicorn is not working.
Do anyone know about this kind of problem?
Thank you.
— app.yaml —
runtime: python38
instance_class: F1
env: standard
entrypoint: gunicorn -b :$PORT <PROJECT_NAME>.wsgi:application
includes:
- secret.yaml
handlers:
- url: /static
static_dir: static/
- url: /.*
script: auto
secure: always
automatic_scaling:
max_instances: 2
— settings/base.py —
from pathlib import Path
import os
from dotenv import load_dotenv
load_dotenv()
BASE_DIR = Path(__file__).resolve().parent.parent.parent
AUTH_USER_MODEL = 'website.User'
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'website',
'widget_tweaks',
'social_django',
'corsheaders',
'django_cleanup',
'stdimage',
'storages',
]
MIDDLEWARE = [
'django.middleware.gzip.GZipMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'social_django.middleware.SocialAuthExceptionMiddleware',
]
CORS_ORIGIN_ALLOW_ALL = True
ROOT_URLCONF = '<PROJECT_NAME>.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [BASE_DIR / 'templates']
,
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
'social_django.context_processors.backends',
'social_django.context_processors.login_redirect',
],
},
},
]
WSGI_APPLICATION = '<PROJECT_NAME>.wsgi.application'
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
AUTHENTICATION_BACKENDS = (
'social_core.backends.open_id.OpenIdAuth',
'social_core.backends.google.GoogleOAuth2',
'social_core.backends.facebook.FacebookOAuth2',
'django.contrib.auth.backends.ModelBackend',
)
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
LANGUAGE_CODE = 'ja'
TIME_ZONE = 'Asia/Tokyo'
USE_I18N = True
USE_TZ = True
PROJECT_NAME = os.path.basename(BASE_DIR)
STATIC_URL = 'static/'
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]
STATIC_ROOT = f'var/www/{PROJECT_NAME}/static'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
LOGIN_REDIRECT_URL = 'index'
LOGOUT_REDIRECT_URL = 'index'
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
— settings/production.py —
from .base import *
SECRET_KEY = os.getenv('SECRET_KEY')
DEBUG = False
ALLOWED_HOSTS = ['<CUSTOM_DOMAIN>']
# データベース
import pymysql
pymysql.install_as_MySQLdb()
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql',
'HOST': '/cloudsql/' + os.getenv('DB_CONNECTION_NAME'),
'USER': os.getenv('DB_USER'),
'PASSWORD': os.getenv('DB_PASSWORD'),
'NAME': os.getenv('DB_NAME'),
}
}
# ストレージ
from google.oauth2 import service_account
GS_CREDENTIALS = service_account.Credentials.from_service_account_file(
os.path.join(BASE_DIR, '<PROJECT_NAME>/settings/<CREDENTIAL_FILE>.json')
)
DEFAULT_FILE_STORAGE = 'storages.backends.gcloud.GoogleCloudStorage'
STATICFILES_STORAGE = 'storages.backends.gcloud.GoogleCloudStorage'
GS_BUCKET_NAME = os.getenv('GS_BUCKET_NAME')
GS_PROJECT_ID = '<PROJECT_NAME>'
# ソーシャルログイン
SOCIAL_AUTH_GOOGLE_OAUTH2_KEY = os.getenv('SOCIAL_AUTH_GOOGLE_OAUTH2_KEY')
SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET = os.getenv('SOCIAL_AUTH_GOOGLE_OAUTH2_SECRET')
SOCIAL_AUTH_FACEBOOK_KEY = os.getenv('SOCIAL_AUTH_FACEBOOK_KEY')
SOCIAL_AUTH_FACEBOOK_SECRET = os.getenv('SOCIAL_AUTH_FACEBOOK_SECRET')
Like you mentioned, the error might be from tkinter, try this:
Updated
Change your entrypoint to just
entrypoint: gunicorn -b :$PORT <PROJECT_NAME>.wsgi
Since you have an entrypoint in your app.yaml file which is run via gunicorn, you must explicitly include gunicorn in requirements.txt file
I solved this problem by myself.
There was the code import turtledemo on views.py and the library needs TK. That was the cause of the error.
PyCharm automatically added this code.
Thank you, Supun Kaihara and NoCommandLine.