Listing 2. subscribe.sh

#!/bin/sh

CLUSTER=sql_cluster
DB1=contactdb
DB2=contactdb_slave
H1=localhost
H2=localhost
U=postgres

slonik <<_EOF_

cluster name = $CLUSTER;

node 1 admin conninfo = 'dbname=$DB1 host=$H1 user=$U';
node 2 admin conninfo = 'dbname=$DB2 host=$H2 user=$U';

subscribe set (id = 1, provider = 1, receiver = 2, forward = yes);