postgres-xl notes

source/resources/apps/postgres-xl/README.md

@@ -94,6 +94,7 @@ Set up user postgres to ssh to all nodes on database ethernet interface.
 
 chown postgres:postgres /usr/local/pgsql
 
+
 https://www.postgres-xl.org/documentation/pgxc-ctl.html
 
 Log into pgxl1, run:
@@ -103,6 +104,12 @@ At PGXC promt run:
 prepare config empty
 
 
+
+GTM master, GTM slave, GTM proxy, Coordinator master/slave and Datanode master/slave need its own port to listen to. Coordinators and Datanodes also need a pooler port to pool connections to Datanodes.
+
+While adding a Coordinator master and a Datanode master, extra server configuration and extra pg_hba configuration parameters can be specified in a file.
+
+
 add gtm         master name host port        dir
 add gtm         slave  name host port        dir
 add gtm_proxy          name host port        dir