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Mads Kiilerich

celery: upgrade to Celery 3

Celery 3 is more than 2 and is the future and should be more stable than Celery 2.

There might be problems like
PRECONDITION_FAILED - cannot redeclare exchange 'celeryresults' in vhost 'kallithea' with different type, durable, internal or autodelete value
when celery is upgraded and it tries to upgrade existing tasks.

One way to avoid that problem:
- make sure celery has run to completion and there are no important pending tasks,
- delete the old vhost,
- upgrade celery,
- create new vhost
- set permissions for vhost
- profit

.. _backup:

====================
Backing up Kallithea
====================


Settings
--------

Just copy your .ini file, it contains all Kallithea settings.


Whoosh index
------------

The Whoosh index is located in the ``data/index`` directory where you installed
Kallithea, i.e., the same place where the ini file is located


Database
--------

When using sqlite just copy kallithea.db.
Any other database engine requires a manual backup operation.

A database backup will contain all gathered statistics.