尝试使用systemd

问题描述

我正在尝试将celery用作我的ec2服务器上的守护程序，并且到目前为止一直在遵循this教程。每次我尝试启动celery worker守护程序时，日志都会返回以下错误：

systemd[1]: celery.service: Failed to load environment files: No such file or directory
systemd[1]: celery.service: Failed to run 'start' task: No such file or directory
systemd[1]: celery.service: Failed with result 'resources'.
systemd[1]: Failed to start Celery Service.

当我使用运行工人时

celery -A project_name worker --loglevel=INFO

celery可以按预期运行，但是当我注销服务器时会关闭。我在这里是一个完整的初学者，希望能帮助您解决此错误。下面提供了所有相关文件：

celery.conf

# celery.conf

CELERYD_NODES="w1"
CELERY_BIN="path/to/project/directory/env/bin/celery"
CELERY_APP="project_name"
CELERYD_MULTI="multi"
CELERYD_PID_FILE="/var/run/celery/%n.pid"
CELERYD_LOG_FILE="/var/log/celery/%n%I.log"
CELERYD_LOG_LEVEL="INFO"

celery.service

[Unit]
Description=Celery Service
After=network.target

[Service]
Type=forking
User=username
Group=groupname
EnvironmentFile=/path/to/environmentfile/celery.conf
WorkingDirectory=path/to/project/directory/env/bin/
ExecStart=/bin/sh -c '${CELERY_BIN} -A ${CELERY_APP} multi start ${CELERYD_NODES} \
  --pidfile=${CELERYD_PID_FILE} \
  --logfile=${CELERYD_LOG_FILE} --loglevel=${CELERYD_LOG_LEVEL} ${CELERYD_OPTS}'
ExecStop=/bin/sh -c '${CELERY_BIN} multi stopwait ${CELERYD_NODES} \
  --pidfile=${CELERYD_PID_FILE}'
ExecReload=/bin/sh -c '${CELERY_BIN} -A ${CELERY_APP} multi restart ${CELERYD_NODES} \
  --pidfile=${CELERYD_PID_FILE} \
  --logfile=${CELERYD_LOG_FILE} --loglevel=${CELERYD_LOG_LEVEL} ${CELERYD_OPTS}'

[Install]
WantedBy=multi-user.target

Django设置：

INSTALLED_APPS = [
    'django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','rest_framework','rest_framework.authtoken','profiles_api',"push_notifications",]

REST_FRAMEWORK = {
    'DEFAULT_RENDERER_CLASSES': [
        'rest_framework.renderers.JSONRenderer','rest_framework.renderers.browsableAPIRenderer',]
}


MIDDLEWARE = [
    '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',]

ROOT_URLconf = 'profiles_project.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates','Dirs': [],'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',],},]

Wsgi_APPLICATION = 'profiles_project.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.0/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.MysqL','NAME': 'name','USER': 'name','PASSWORD': '***','HOST': '',# Or an IP Address that your DB is hosted on
        'PORT': '',}
#

# Password validation
# https://docs.djangoproject.com/en/3.0/ref/settings/#auth-password-validators

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',]


# Internationalization
# https://docs.djangoproject.com/en/3.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS,JavaScript,Images)
# https://docs.djangoproject.com/en/3.0/howto/static-files/

STATIC_URL = '/static/'

AUTH_USER_MODEL = 'profiles_api.UserProfile'

STATIC_ROOT = 'static/'

# celery
broKER_URL = 'redis://localhost:5555'
RESULT_BACKEND = 'redis://localhost:5555'
ACCEPT_CONTENT = ['application/json']
RESULT_SERIALIZER = 'json'
TASK_SERIALIZER = 'json'

解决方法

我已通过编辑celery.service文件使其看起来像这样来解决此问题

celery.service

[Unit]
Description=Celery Service
After=network.target

    [Service]
    #Type=forking
    User=username
    Group=groupname
    KillMode=control-group
    RemainAfterExit=yes
    WorkingDirectory=path/to/project/directory
    Restart=yes
    #PassEnvironment=CELERYD_NODES CELERY_BIN CELERY_APP CELERYD_MULTI CELERYD_PID_FILE CELERYD_LOG_FILE CELERYD_LOG_LEVEL
    
    ExecStart=path/to/project/directory/env/bin/celery -A project_name worker --loglevel=INFO
    
    ExecStop=path/to/project/directory/env/bin/celery -A project_name worker --loglevel=INFO
    
    
    
    ExecReload=path/to/project/directory/env/bin/celery -A project_name worker --loglevel=INFO
    
    
    [Install]
    WantedBy=multi-user.target