path /var/log/httpd-access.log #...or where you placed your Apache access log
pos_file /var/log/td-agent/httpd-access.log.pos # This is where you record file position
tag nginx.access #fluentd tag!
format nginx # Do you have a custom format? You can write your own regex.
apikey <Treasure Data API key> # You get your API key by signing up for Treasure Data
buffer_path /var/log/td-agent/buffer/td