Cloudflare causing logout
And I'm finding when a site using C188.8.131.52 with Cloudflare gets the admin user logged out after just a minute or two. I've tested every possible factor, such as APC enable/disable, various browsers, and the only factor that actually fixes the problem is turning off CloudFlare. I'd prefer to keep it if possible, but the site is edited on a daily basis, so turning it on and off isn't really viable.
Also I'd prefer not to setup a "direct" subdomain as recommended in the "how to" for SEO/duplicate content reasons, plus it does confuse the site editors a little.
Anyone else had the same issue and any suggested workarounds?
To handle the issue of confusing site editors you can setup a redirect for the login page to take the editors to the direct subdomain.
As for the SEO issues, I've not experienced that. Modify robots to prevent crawling and make sure that editors do not link to the direct subdomain and you should be fine.
Any updates on how you resolved the issue? We are also experiencing the same problem now.
With 5.7+ I actually never found a good solution for one site but another seems fine, there are so many variables, whether you are using their ssl redirects (page rules), the apache mod, what level of security in cloudflare, what minification you are using and then what level of minification and cacheing in C5 etc. It's a real pain actually I'm considering never using CloudFlare again with C5 for these reasons it's just too much of a headache to have another proxy/cache in the middle of a dynamic CMS.
Definitely don't use the js minification that seems to break the admin also.
One tip that may help it seemed to help with me is to use their rules to ignore all requests to the /concrete directories/paths so it doesn't munge the c5 js libraries and so on.
Good luck wish I had more to add but really it's like shooting ducks in a gallery like they say :)