Ubuntu 18.04:
apt install pmacct
service nfacctd start
root@pmacct:/etc/pmacct# cat nfacctd.conf
! nfacctd configuration
!
!
!
daemonize: true
pidfile: /var/run/nfacctd.pid
syslog: daemon
!
! interested in in and outbound traffic
aggregate: src_host,dst_host
! on this network
!pcap_filter: net 127.0.0.0/8
!pcap_filter: net 192.168.1.0/24
! on this interface
interface: eth0
nfacctd_port: 1234
!
plugins: print
print_refresh_time: 300
!print_refresh_time: 900
print_output: csv
print_output_file: /root/PMACCT/ipfix-%Y%m%d-%H%M.csv
print_latest_file: /root/PMACCT/latest
!print_time_roundoff: m
! storage methods
!plugins: pgsql
!sql_host: localhost
!sql_passwd:
! refresh the db every minute
!sql_refresh_time: 60
! reduce the size of the insert/update clause
!sql_optimize_clauses: true
! accumulate values in each row for up to an hour
!sql_history: 1h
! create new rows on the minute, hour, day boundaries
!sql_history_roundoff: mhd
! in case of emergency, log to this file
!sql_recovery_logfile: /var/lib/pmacct/nfacctd_recovery_log