Linux, Nginx, ZFS, PHP-FPM and systems howtos
Updated August 2026: ZFS ARC using “all the RAM” is still expected behaviour. Cap ARC with zfs_arc_max (module param or /etc/modprobe.d/), watch arc_summary, and size for your workload instead of fighting ZFS with random sysctl...
Updated August 2026: Invalid rel values on category/tag links were an HTML5 validation issue in older themes/plugins. If you still see “Bad value … for attribute rel”, inspect the theme or a SEO plugin’s breadcrumb/link...
Windows 7/8/2008/2012 causing high CPU loads on KVM If Windows 7/8/2008/2012 causing high CPU loads on KVM it could be a Clock Timing Error which causing this. To use the KVM Platform Clock you...
WordPress wrong comment IP Having trouble with WordPress wrong comment IP behind a Loadbalancing environment or especially Varnish / HAProxy? Getting local IP address in comment posts e.g.? Solutions is here! If you have...
Cloudstack cant find the distribution version wondering about cloud-setup-management error message Cloudstack cant find the distribution version when running cloud-setup-management on Debian Squeeze/Wheezy Linux? Getting this error? cloud-setup-management Starting to configure CloudStack Management Server: Can’t...
