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POHow can I communicate with Celery on Cloud Foundry?
 

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  1. POHow can I communicate with Celery on Cloud Foundry?
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    <p>I have a wsgi app with a celery component. Basically, when certain requests come in they can hand off relatively time-consuming tasks to celery. I have a working version of this product on a server I set up myself, but our client recently asked me to deploy it to Cloud Foundry. Since Celery is not available as a service on Cloud Foundry, we (me and the client's deployment team) decided to deploy the app <em>twice</em> – once as a wsgi app and once as a standalone celery app, sharing a rabbitmq service.</p> <p>The code between the apps is identical. The wsgi app responds correctly, returning the expected web pages. <code>vmc logs celeryapp</code> shows that celery is to be up-and-running, but when I send requests to wsgi that should become celery tasks, they disappear as soon as they get to a <code>.delay()</code> statement. They neither appear in the celery logs nor do they appear as an error.</p> <h2>Attempts to debug:</h2> <ul> <li>I can't use <code>celery.contrib.rdb</code> in Cloud Foundry (to supply a telnet interface to pdb), as each app is sandboxed and port-restricted.</li> <li>I don't know how to find the specific rabbitmq instance these apps are supposed to share, so I can see what messages it's passing.</li> </ul> <p>Update: to corroborate the above statement about finding rabbitmq, here's what happens when I try to access the node that should be sharing celery tasks:</p> <pre><code>root@cf:~# export RABBITMQ_NODENAME=eecef185-e1ae-4e08-91af-47f590304ecc root@cf:~# export RABBITMQ_NODE_PORT=57390 root@cf:~# ~/cloudfoundry/.deployments/devbox/deploy/rabbitmq/sbin/rabbitmqctl list_queues Listing queues ... =ERROR REPORT==== 18-Jun-2012::11:31:35 === Error in process &lt;0.36.0&gt; on node 'rabbitmqctl17951@cf' with exit value: {badarg,[{erlang,list_to_existing_atom,["eecef185-e1ae-4e08-91af-47f590304ecc@localhost"]},{dist_util,recv_challenge,1},{dist_util,handshake_we_started,1}]} Error: unable to connect to node 'eecef185-e1ae-4e08-91af-47f590304ecc@cf': nodedown diagnostics: - nodes and their ports on cf: [{'eecef185-e1ae-4e08-91af-47f590304ecc',57390}, {rabbitmqctl17951,36032}] - current node: rabbitmqctl17951@cf - current node home dir: /home/cf - current node cookie hash: 1igde7WRgkhAea8fCwKncQ== </code></pre> <p>How can I debug this and/or why are my tasks vanishing? </p>
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