c94cc4a61a
There seems to be a bug in Galera that causes TASK [mariadb : Check MariaDB service WSREP sync status] to fail. One (in case of 3-node cluster) or more (possible with more-than-3-node clusters) nodes may "lose the race" and get stuck in the "initialized" state of WSREP. This is entirely random as is the case with most race issues. MariaDB service restart on that node will fix the situation but it's unwieldy. The above may happen because Kolla Ansible starts and waits for all new nodes at once. This did not bother the old galera (galera 3) which figured out the ordering for itself and let each node join the cluster properly. The proposed workaround is to start and wait for nodes serially. Change-Id: I449d4c2073d4e3953e9f09725577d2e1c9d563c9 Closes-Bug: #1947485
Kolla Ansible
The Kolla Ansible is a deliverable project separated from Kolla project.
Kolla Ansible deploys OpenStack services and infrastructure components in Docker containers.
Kolla's mission statement is:
To provide production-ready containers and deployment tools for operating
OpenStack clouds.Kolla is highly opinionated out of the box, but allows for complete customization. This permits operators with little experience to deploy OpenStack quickly and as experience grows modify the OpenStack configuration to suit the operator's exact requirements.
Getting Started
Learn about Kolla Ansible by reading the documentation online Kolla Ansible.
Get started by reading the Developer Quickstart.
OpenStack services
Kolla Ansible deploys containers for the following OpenStack projects:
- Aodh
- Barbican
- Bifrost
- Blazar
- Ceilometer
- Cinder
- CloudKitty
- Cyborg
- Designate
- Freezer
- Glance
- Heat
- Horizon
- Ironic
- Keystone
- Kuryr
- Magnum
- Manila
- Masakari
- Mistral
- Monasca
- Murano
- Neutron
- Nova
- Octavia
- Sahara
- Senlin
- Solum
- Swift
- Tacker
- Trove
- Vitrage
- Vmtp
- Watcher
- Zun
Infrastructure components
Kolla Ansible deploys containers for the following infrastructure components:
- Collectd, Telegraf, InfluxDB, Prometheus, and Grafana for performance monitoring.
- Elasticsearch and Kibana to search, analyze, and visualize log messages.
- Etcd a distributed reliable key-value store.
- Fluentd as an open source data collector for unified logging layer.
- Gnocchi A time-series storage database.
- HAProxy and Keepalived for high availability of services and their endpoints.
- MariaDB and Galera Cluster for highly available MySQL databases.
- Memcached a distributed memory object caching system.
- Open vSwitch and Linuxbridge backends for Neutron.
- RabbitMQ as a messaging backend for communication between services.
- Redis an in-memory data structure store.
- Zookeeper an open-source server which enables highly reliable distributed coordination.
Directories
ansible- Contains Ansible playbooks to deploy OpenStack services and infrastructure components in Docker containers.contrib- Contains demos scenarios for Heat, Magnum and Tacker and a development environment for Vagrantdoc- Contains documentation.etc- Contains a reference etc directory structure which requires configuration of a small number of configuration variables to achieve a working All-in-One (AIO) deployment.kolla_ansible- Contains password generation script.releasenotes- Contains releasenote of all features added in Kolla Ansible.specs- Contains the Kolla Ansible communities key arguments about architectural shifts in the code base.tests- Contains functional testing tools.tools- Contains tools for interacting with Kolla Ansible.zuul.d- Contains project gate job definitions.
Getting Involved
Need a feature? Find a bug? Let us know! Contributions are much appreciated and should follow the standard Gerrit workflow.
- We communicate using the #openstack-kolla irc channel.
- File bugs, blueprints, track releases, etc on Launchpad.
- Attend weekly meetings.
- Contribute code.
Contributors
Check out who's contributing code and contributing reviews.
Notices
Docker and the Docker logo are trademarks or registered trademarks of Docker, Inc. in the United States and/or other countries. Docker, Inc. and other parties may also have trademark rights in other terms used herein.