I've noticed that Google Webmaster Tools is reporting a lot of blocked resources in my website.Right now all the blocked resources are .css, .js and images (.jpg, .png) that I serve from Cloudfront CDN.I've spent a lot of time testing and trying to figure out why google doesn't crawl these files and reports a resource block status.Currently I serve these files from several hostnames like: cdn1.example.com, cdn2.example.com, cdn1, cdn2 and the others are CNAME's to the cloudfront distribution name.Test: I've tried to use directly the cloudfront distribution (no CNAME) but the problem persists.Currently my robots.txt looks like this:# Google AdSenseUser-agent: Mediapartners-GoogleDisallow:#Google imagesUser-agent: Googlebot-ImageDisallow: /User-agent: *Disallow: /homepageDisallow: /index.php*Disallow: /uncategorized*Disallow: /tag/*Disallow: *feedDisallow: */page/*Disallow: *author*Disallow: *archive*Disallow: */category*Disallow: *tag=*Disallow: /test*Allow: /And examples of files blocked in one example page:cdn1.example.com/wp-content/plugins/wp-forecast/wp-forecast-default.csscdn9.example.com/wp-content/plugins/bwp-minify/min/?f=wp-content/themes/magazine/css/font-awesome.min.css,wp-content/themes/magazine/css/responsive.csscdn5.example.com/wp-content/themes/magazine/images/nobg.pngcdn6.example.com/wp-content/plugins/floating-social-bar/images/fsb-sprite.pngcdn5.example.com/wp-content/uploads/2013/11/Design-Hotel-3-80x80.jpgcdn5.example.com/wp-content/uploads/2013/11/Marta-Hotel-7-270x225.jpgI've even tried to allow everything in robots.txt but I always have the same result.I've also been looking carefully at CloudFront settings in Amazon and see nothing that could be related (I don't use and never used the option :Restrict Viewer Access (Use Signed URLs or Signed Cookies).Right now I've spent a lot of time looking into this and have no more ideas.Can someone can think of a reason why Googlebot would be blocked from crawling files hosted in Amazon CloudFront?
Google doesn't crawl CDN files
google search console;web crawlers;googlebot;cdn;amazon cloudfront