ACLs: /etc/varnish/default.vcl Memory usage: grep VARNISH_STORAGE_SIZE /etc/sysconfig/varnish Check how much memory can use: (check last parameter in the output line) # ps aux | grep varnish root 27093 0.0 0.1 112304 1140 ? Ss 16:28 0:00 /usr/sbin/varnishd -P /var/run/varnish.pid -a :80 -f /etc/varnish/default.vcl -T 127.0.0.1:6082 -t 120 -w 50,1000,120 -u varnish -g varnish -S /etc/varnish/secret -s file,/var/lib/varnish/varnish_storage.bin,256M varnish 27094 0.1 0.9 21760528 9240 ? Sl 16:28 0:02 /usr/sbin/varnishd -P /var/run/varnish.pid -a :80 -f /etc/varnish/default.vcl -T 127.0.0.1:6082 -t 120 -w 50,1000,120 -u varnish -g varnish -S /etc/varnish/secret -s file,/var/lib/varnish/varnish_storage.bin,256M >> Test VCL # varnishd -C -f /etc/varnish/default.vcl >> Test if varnish works # varnishstat