My website occasionally loses images due to the image url being set to http://default/sites/files/XXXX.jpg. The "default" baseurl is the issue and as i understand drupal 8 has no way of setting this manually.

As this seems to happen sporadically i am assuming it is related to a cron job running under baseurl of "default" and then the page being saved to the cache.

Anyone have any ideas how to diagnose or possible causes? i was thinking something like SimpleSiteMap could be affecting this.


UPDATE After some testing it seems likely that its a cron job accessing the pages and the image urls being cached incorrectly.

The cron jobs run under base url of 'http://default' so the chain of events seems to be: cron starts clears caches a cron job attempts to render the page causing the img urls to be cache incorrecly

If i then clear the cache again and navigate to the pages the urls are re-written and cached correctly now.

  • 1
    How are you running the cron job? If you are using Drush cron you need the --uri parameter.
    – CG Monroe
    Oct 3, 2017 at 19:44
  • 1
    Ah I forgot/didnt know about that parameter. I am not actually sure how the CRON on our production site is being called but i am pretty sure that the uri parameter has not been set yet. I am expecting this to solve my issues, will update once this is confirmed. thanks CG Monroe!
    – penance
    Oct 4, 2017 at 8:19

1 Answer 1


Have you tried setting

$settings['file_public_base_url'] = 'http://sitename.local/sites/default/files';

In sites/default/settings.php?

I do this for all of my sites both in dev and production and haven't had any issues.

I realise that you may have solved the issue, but just so you know you can set the base url for your files through that setting :)

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