Help needed in Replicating pgsql

Hi
I am Hemasekhar K.P
I am trying to replicae pgsql on REDHATLinux 8,
but the site http://gborg.postgresql.org/genpage?replication_72install. is
giving instructions on REDHATLinux 7,
is there any site which gives instructions on how to replicate on
REDHATLinux 8,

Actually in postgresql.conf which is under
/usr/local/pgsql/data/postgresql.conf, I added the following lines

#
# Replication
#

repl_max_remote_processes = 2
repl_mgr_port = 5430
repl_spread_port = 4803
repl_spread_host = 'localhost'
repl_spread_group = 'replicationGroup'
repl_database = 'testing'
repl_user = 'qsip'

when i tried to run the postmaster, it is giving the following error

[qsip(at)ssf pgsql]$ postmaster -i -D /usr/local/pgsql/data/
FATAL 1: 'repl_max_remote_processes' is not a valid option name
[qsip(at)ssf pgsql]$

i tried commenting repl_max_remote_processes ,it is showing error at

[qsip(at)ssf pgsql]$ postmaster -i -D /usr/local/pgsql/data/
FATAL 1: 'repl_mgr_port' is not a valid option name
[qsip(at)ssf pgsql]$.

Please help me in this regard.

Thanks and Regards
Hemasekhar.