
upgrading from 1.4.[01] -> 1.4.2
-----------------------------
 no special requirements needed, except ones mentioned in CHANGELOG or Installation142 guide

upgrading from 1.3.x -> 1.4.0
-----------------------------
 no special requirements needed, except ones mentioned in CHANGELOG or Installation410 guide

upgrading from 1.3beta -> 1.3
-----------------------------
 no difference as far as functionality is concerned 

upgrading from 1.2 -> 1.3beta
-----------------------------
assume CONF_DIR = /etc/n2rrd
       TOP_DIR  = the extracted source directory

1) copy TOP_DIR/templates/dist-environment.t to CONF_DIR/templates/environment.t
   comment/reorder/remove variables the way you like

2) check if your configuration file has following variable
   e.g: /etc/n2rrd/n2rrd.conf
   SAVE_NAGIOS_ENVIRONMENT_VARS = 0

   enable it by passing value "1" to save NAGIOS_* environment variables


upgrading from 1.1 -> 1.2beta
-----------------------------

1)
well the only thing you have to change are variables
in n2rrd.conf, following are the ones you need to check

CONF_DIR = /etc/n2rrd

following variables are prepended with CONF_DIR
 SERVICE_NAME_MAPS = templates/maps/service_name_maps
     TEMPLATES_DIR = templates

2) check CHANGELOG 
