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"...kolla-ansible.git" did not exist on "ed3b27cc923144a9f437e931a5af3571e801ea33"

etcd: Add support for more scenarios

Jan Gutter authored 1 year ago

This commit addresses a few shortcomings in the etcd service:
  * Adding or removing etcd nodes required manual intervention.

  * The etcd service would have brief outages during upgrades or
    reconfigures because restarts weren't always serialised.

This makes the etcd service follow a similar pattern to mariadb:
  * There is now a distiction between bootstrapping the cluster
    and adding / removing another member.

  * This more closely follows etcd's upstream bootstrapping
    guidelines.

  * The etcd role now serialises restarts internally so the
    kolla_serial pattern is no longer appropriate (or necessary).

This does not remove the need for manual intervention in all
failure modes: the documentation has been updated to address the
most common issues.

Note that there's repetition in the container specifications: this
is somewhat deliberate. In a future cleanup, it's intended to reduce
the duplication.

Change-Id: I39829ba0c5894f8e549f9b83b416e6db4fafd96f

ed3b27cc

ed3b27cc 1 year ago

Name	Last commit	Last update
ansible
contrib
deploy-guide/source
doc
etc/kolla
kolla_ansible
releasenotes
roles
specs
tests
tools
zuul.d
.ansible-lint
.gitignore
.gitreview
.stestr.conf
.yamllint
CONTRIBUTING.rst
LICENSE
README.rst
lint-requirements.txt
requirements-core.yml
requirements.txt
requirements.yml
setup.cfg
setup.py
test-requirements.txt
tox.ini

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:

Infrastructure components

Kolla Ansible deploys containers for the following infrastructure components:

Collectd, Telegraf, InfluxDB, Prometheus, and Grafana for performance monitoring.
OpenSearch and OpenSearch Dashboards 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 for use with Neutron.
RabbitMQ as a messaging backend for communication between services.
Redis an in-memory data structure store.

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 Vagrant
doc - 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.