Gestion automatique des groupes pour ident via droits nounou

Python/etc/postgresql/9.1/main/pg_hba.conf

@@ -89,6 +89,11 @@ out("""# PostgreSQL Client Authentication Configuration File
 # a SIGHUP signal.  If you edit the file on a running system, you have
 # to SIGHUP the postmaster for the changes to take effect.  You can
 # use "pg_ctl reload" to do that.
+
+#Attention; do not REMOVE this line
+# Database administrative login by Unix domain socket
+local   all             postgres                                peer
+
 # TYPE  DATABASE        USER            ADDRESS                 METHOD
 host    Syslog           rsyslog             127.0.0.1/32            md5