netdata/system/netdata.conf

# netdata configuration
#
# You can get the latest version of this file, using:
#
#  netdatacli dumpconfig > /etc/netdata/netdata.conf
#
# You can also download it using:
#
#  wget -O /etc/netdata/netdata.conf http://localhost:19999/netdata.conf
# or
#  curl -o /etc/netdata/netdata.conf http://localhost:19999/netdata.conf
#
# You can uncomment and change any of the options below.
# The value shown in the commented settings, is the default value.
#

[global]
    run as user = netdata

    # default storage size - increase for longer data retention
    page cache size = 32
    dbengine multihost disk space = 256