found a tool to do pg replication

howto/postgresql.md

@@ -1866,3 +1866,8 @@ It's written in Perl, with [a license similar to the PostgreSQL
 license](https://github.com/omniti-labs/omnipitr/blob/master/doc/LICENSE).
 
 I do not believe it is a suitable replacement for our backup system.
+
+## Replication
+
+We don't do high availability right now, but if we would, we might
+want to consider [pg_easy_replicate](https://github.com/shayonj/pg_easy_replicate).