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Description:

oslo.config.comparator 0.3.1

Overview
Whenever you have to upgrade your OpenStack clusters, you have to
rewrite your config files like nova.conf, cinder.conf, neutron.conf,
etc.
Although
oslo.config.generator
helps you generate new config files automatically, there is no feature
to migrate existed config data to newly generated config.
This program deals with the tedious task that compares the old config to
new config line by line, and updates the config value old config had.

Features

Check two OpenStack configuration files. It shows set of attributes
which are categorized to 5 types. This distinction is based on the
old config file and commented attributes which means to have default
value does not appear.

Added Newly added attributes. Old config does not have these
attributes.
Removed Removed attributes. Old config had but new config does
not have.
Unchanged Unchanged attributes. Both of new and old config
have.
Changed Changed attributes. Group or name is changed at new
release.
Ambiguous Ambiguous attributes. These attributes are changed
but cannot be categorized since the name is duplicated.

Upgrade new config file with new contents based on existed config
file. It fills out the new config file with the old config data which
belongs to Changed and Unchanged attributes. Note that
Ambigouos attributes should be treated by manual.

Installation
pip3 install oslo.config.comparator

Usage

Check two OpenStack configuration files.
oslo-config-comparator check [FILE1] [FILE2] (-v)

FILE1 Base config file which has old data.
FILE2 New config file which generated by
oslo-config-generator.
-v Show datails.

Upgrade new config file with new contents based on existed config
file.
oslo-config-comparator upgrade [FILE1] [FILE2] (-o OUTPUT)

-o OUTPUT File to be written. Defaults to stdout.

Limitation

It only parses “key = value” formatted string, so if the config file
has template engine syntax such as Jinja, ruby ERB, additional
content surrounding the attributes must be written manually.

Licenses
MIT