Yuyu

Yuyu provide ability to manage openstack billing by listening to every openstack event. Yuyu is a required component to use Yuyu Dashboard. There are 3 main component in Yuyu: API, Cron, Event Monitor

Yuyu API

Main component to communicate with Yuyu Dashboard.

Yuyu Cron

Provide invoice calculation and rolling capabilities that needed to run every month.

Yuyu Event Monitor

Monitor event from openstack to calculate billing spent.

System Requirement

• Python 3
• Openstack
• Virtualenv
• Linux environment with Systemd

Pre-Installation

Virtualenv

Make sure you installed virtualenv before installing Yuyu

pip3 install virtualenv

Timezone

Billing is a time sensitive application, please make sure you set a correct time and timezone on you machine.

Openstack Service Notification

You need to enable notification for this openstack service:

• Nova (nova.conf)
• Cinder (cinder.conf)
• Neutron (neutron.conf)

Nova

Add configuration below on [oslo_messaging_notifications]

driver = messagingv2 
topics = notifications

Add configuration below on [notifications]

notify_on_state_change = vm_and_task_state
notification_format = unversioned

Cinder & Neutron

Add configuration below on [oslo_messaging_notifications]

driver = messagingv2 
topics = notifications

Kolla Note

If you using Kolla, please add configuration above on all service container. For example on Nova you should put the config on nova-api, nova-scheduler, etc.

Installation

Clone the latest source code and put it on any directory you want. Here i assume you put it on /var/yuyu/

cd /var/yuyu/
git clone {repository}
cd yuyu

Then create virtualenv and activate it

virtualenv env --python=python3.8
source env/bin/activate
pip install -r requirements.txt

Then create a configuration file, just copy from sample file and modify as your preference.

cp yuyu/local_settings.py.sample yuyu/local_settings.py

Please read Local Setting Configuration to get to know about what configuration you should change.

Then run the database migration

python manage.py migrate

Then create first superuser

python manage.py createsuperuser

Local Setting Configuration

YUYU_NOTIFICATION_URL (required)

A Messaging Queue URL that used by Openstack, usually it is a RabbitMQ URL.

Example:

YUYU_NOTIFICATION_URL = "rabbit://openstack:password@127.0.0.1:5672/"

YUYU_NOTIFICATION_TOPICS (required)

A list of topic notification topic that is configured on each openstack service

Example:

YUYU_NOTIFICATION_TOPICS = ["notifications"]

DATABASE

By default, it will use Sqlite. If you want to change it to other database please refer to Django Setting documentation.

• https://docs.djangoproject.com/en/3.2/ref/settings/#databases
• https://docs.djangoproject.com/en/3.2/ref/databases/

API Installation

To install Yuyu API, you need to execute this command.

./bin/setup_api.sh

This will install yuyu_api service

To start the service use this command

systemctl enable yuyu_api
systemctl start yuyu_api

An API server will be open on port 8182.

Event Monitor Installation

To install Yuyu API, you need to execute this command.

./bin/setup_event_monitor.sh

This will install yuyu_event_monitor service

To start the service use this command

systemctl enable yuyu_event_monitor
systemctl start yuyu_event_monitor

Cron Installation

There is a cronjob that needed to be run every month on 00:01 AM. This cronjob will finish all in progress invoice and start new invoice for the next month.

To install it, you can use crontab -e.

Put this expression on the crontab

1 0 1 * * $yuyu_dir/bin/process_invoice.sh 

Replace $yuyu_dir with the directory of where yuyu is located. Example

1 0 1 * * /var/yuyu/bin/process_invoice.sh