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====== Introduction ======

This document contains information about upgrading from previous version of NAV to 3.6.

===== Cricket =====

After the upgrade the following steps are required:
  - Make sure Cricket is not running.
  - **Do a backup of all the rrd-files.**
  - Run ''migrate_cricket.py''. This will:
    * Delete the cricket-entries in the rrd database (the database will be filled again when the new makecricketconfig runs)
    * Remove any temperature oids from the rrd-files. This because they weren't correct in the first place.
  - Before removing any Cricket files make sure you have a backup of them. Especially if you have altered them yourself in any way.
  - Remove old configuration-files from the cricket-config directory. This is only necessary for:
    * Defaults
    * routers/*
    * router-interfaces/*
    * switches/*
    * switch-ports/*
  - Copy new default configuration files to the ''cricket-config'' directory.
  - **Make sure that the datapath in the top level Defaults-file is correct and pointing to the directory where the rrd-files are stored.**
  - Run ''extract_cricket_oids.py'' to extract oids from the Default files and insert them into the snmpoid table.

You can now run mcc.py to create the Cricket config.

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