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Error with nginx cache: no space left on /tmp

Discussion in 'General Discussion' started by clopezi, Mar 26, 2013.

  1. clopezi

    clopezi Member

    Mar 17, 2013
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    Today our server did something strange, but i solved. I make the post for one question and maybe will be helpfull to other user.

    Suddenly, the server make a error 500, after that, i restart all services but varnish cache don't restart. When i go to check the varnish configuration, the script says: no space left in /tmp/

    I check with df -h and /tmp have around 2GB free (32% of space).

    I remove all session* in /tmp and all in /tmp/nginx_client and now all works perfectly, with a 90% empty in /tmp

    So i have two questions:

    1) Why no space empty if df -h says yes?

    2) Who can i make a cronjob to empty nginx dir and after that restart nginx service every night? The following command in crontab is correct?

    Thank you!
    #1 clopezi, Mar 26, 2013
    Last edited: Mar 26, 2013
  2. Jeff Shotnik

    Jeff Shotnik Well-Known Member

    Oct 10, 2012
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    Denver, Colorado, United States
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    Nginx has a cache manager process that watches the nginx cache and removes inactive files after a certain period or when the cache limit has been reached. In order to keep /tmp from becoming full you'll need to adjust your 'proxy_cache_path' directive to use a smaller cache size. If /tmp is too small for the cache size you need, move nginx cache to /home, or a larger partition.

    Here's a link on how to use proxy_cache_path - HttpProxyModule

    "Why no space empty if df -h says yes?"
    >> You may need to run `sync` to get the correct value to show - changes aren't committed until buffers are flushed.

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