我在aws弹性beanstalk上启动了一个django应用程序。我想运行后台任务或工作人员以便运行芹菜。
我无法找到是否可能。如果是的话怎么可能实现呢?
这就是我现在正在做的事情,但每次都会产生一个事件类型错误。
container_commands:
01_syncdb:
command: "django-admin.py syncdb --noinput"
leader_only: true
50_sqs_email:
command: "./manage.py celery worker --loglevel=info"
leader_only: true
答案 0 :(得分:67)
正如@ chris-wheadon在评论中所建议的那样,你应该尝试在后台运行芹菜作为一个守护神。 AWS Elastic Beanstalk已使用supervisord运行某些deamon进程。因此,您可以利用它来运行celeryd并避免为此创建自定义AMI。它很适合我。
我所做的是在EB将应用程序部署到实例后以编程方式将celeryd配置文件添加到实例中。棘手的部分是文件需要为守护程序设置所需的环境变量(例如,如果您在应用程序中使用S3或其他服务,则为AWS访问密钥)。
下面是我使用的脚本的副本,将此脚本添加到配置EB环境的.ebextensions
文件夹中。
安装脚本在/opt/elasticbeanstalk/hooks/appdeploy/post/
文件夹(documentation)中创建一个文件,该文件位于所有EB实例上。其中的任何shell脚本都将在部署后执行。放在那里的shell脚本的工作原理如下:
celeryenv
变量中,virutalenv环境存储在
遵循supervisord符号的格式。这是一个逗号
分隔的env变量列表。celeryconf
配置文件为字符串,包括先前解析的
env variables。celeryd.conf
的文件中
celery守护进程的supervisord配置文件。supervisord.conf
文件,如果它还没有。以下是该脚本的副本:
files:
"/opt/elasticbeanstalk/hooks/appdeploy/post/run_supervised_celeryd.sh":
mode: "000755"
owner: root
group: root
content: |
#!/usr/bin/env bash
# Get django environment variables
celeryenv=`cat /opt/python/current/env | tr '\n' ',' | sed 's/export //g' | sed 's/$PATH/%(ENV_PATH)s/g' | sed 's/$PYTHONPATH//g' | sed 's/$LD_LIBRARY_PATH//g'`
celeryenv=${celeryenv%?}
# Create celery configuraiton script
celeryconf="[program:celeryd]
; Set full path to celery program if using virtualenv
command=/opt/python/run/venv/bin/celery worker -A myappname --loglevel=INFO
directory=/opt/python/current/app
user=nobody
numprocs=1
stdout_logfile=/var/log/celery-worker.log
stderr_logfile=/var/log/celery-worker.log
autostart=true
autorestart=true
startsecs=10
; Need to wait for currently executing tasks to finish at shutdown.
; Increase this if you have very long running tasks.
stopwaitsecs = 600
; When resorting to send SIGKILL to the program to terminate it
; send SIGKILL to its whole process group instead,
; taking care of its children as well.
killasgroup=true
; if rabbitmq is supervised, set its priority higher
; so it starts first
priority=998
environment=$celeryenv"
# Create the celery supervisord conf script
echo "$celeryconf" | tee /opt/python/etc/celery.conf
# Add configuration script to supervisord conf (if not there already)
if ! grep -Fxq "[include]" /opt/python/etc/supervisord.conf
then
echo "[include]" | tee -a /opt/python/etc/supervisord.conf
echo "files: celery.conf" | tee -a /opt/python/etc/supervisord.conf
fi
# Reread the supervisord config
supervisorctl -c /opt/python/etc/supervisord.conf reread
# Update supervisord in cache without restarting all services
supervisorctl -c /opt/python/etc/supervisord.conf update
# Start/Restart celeryd through supervisord
supervisorctl -c /opt/python/etc/supervisord.conf restart celeryd
答案 1 :(得分:1)
我试图在PHP中做类似的事情然而无论出于何种原因我无法让工作人员继续运行。我在EC2服务器上切换到AMI,从那时起就取得了成功。
答案 2 :(得分:0)
对于将Elasticbeanstalk与Rails和Sidekiq结合使用的用户。这是一系列的ebextensions最终为我成功了:
https://gist.github.com/ctrlaltdylan/f75b2e38bbbf725acb6d48283fc2f174