vim /var/lib/pgsql/daselement-munich/postgres.conf

# uncomment and change the line:
listen_addresses = '*'

# and change the port to 5433 to avoid conflicts with production port 5432
port = 5433

# start the databasePostgres server
pg_ctl -D /var/lib/pgsql/daselement-data start

# create replication user
psql -- port 5433 postgres

[local]:5433 postgres=# create user repuser replication;

vim /var/lib/pgsql/daselement-data/pg_hba.conf

# TYPE  DATABASE        USER            CIDR-ADDRESS            METHOD
# IPv4 local connections
host    all             repuser             localhost               trust

# restart the databasePostgres server
pg_ctl -D /var/lib/pgsql/daselement-munich restart

# create the replica databasePostgres server
# this command pg_basebackup copies the files from the primary database

pg_basebackup -h db-munich -U repuser --checkpoint=fast -D /var/lib/pgsql/daselement-munich-replica/ -R --slot=daselement_munich -C --port 5433