139 lines
4.5 KiB
ReStructuredText
139 lines
4.5 KiB
ReStructuredText
Development Environment with Vagrant
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====================================
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This guide describes how to use `Vagrant <http://vagrantup.com>`__ to
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assist in developing for Kolla.
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Vagrant is a tool to assist in scripted creation of virtual machines. Vagrant
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takes care of setting up CentOS-based VMs for Kolla development, each with
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proper hardware like memory amount and number of network interfaces.
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Getting Started
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---------------
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The Vagrant script implements All-in-One (AIO) or multi-node deployments. AIO
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is the default.
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In the case of multi-node deployment, the Vagrant setup builds a cluster with
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the following nodes by default:
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- 3 control nodes
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- 1 compute node
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- 1 storage node (Note: ceph requires at least 3 storage nodes)
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- 1 network node
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- 1 operator node
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The cluster node count can be changed by editing the Vagrantfile.
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Kolla runs from the operator node to deploy OpenStack.
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All nodes are connected with each other on the secondary NIC. The
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primary NIC is behind a NAT interface for connecting with the Internet.
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The third NIC is connected without IP configuration to a public bridge
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interface. This may be used for Neutron/Nova to connect to instances.
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Start by downloading and installing the Vagrant package for the distro of
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choice. Various downloads can be found at the `Vagrant downloads
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<https://www.vagrantup.com/downloads.html>`__.
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On Fedora 22 it is as easy as::
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sudo dnf install vagrant ruby-devel libvirt-devel
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**Note:** Many distros ship outdated versions of Vagrant by default. When in
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doubt, always install the latest from the downloads page above.
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Next install the hostmanager plugin so all hosts are recorded in /etc/hosts
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(inside each vm)::
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vagrant plugin install vagrant-hostmanager
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Vagrant supports a wide range of virtualization technologies. This
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documentation describes libvirt. To install vagrant-libvirt plugin::
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vagrant plugin install --plugin-version ">= 0.0.31" vagrant-libvirt
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Some Linux distributions offer vagrant-libvirt packages, but the version they
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provide tends to be too old to run Kolla. A version of >= 0.0.31 is required.
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Setup NFS to permit file sharing between host and VMs. Contrary to the rsync
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method, NFS allows both way synchronization and offers much better performance
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than VirtualBox shared folders. On Fedora 22::
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sudo systemctl start nfs-server
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firewall-cmd --permanent --add-port=2049/udp
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firewall-cmd --permanent --add-port=2049/tcp
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firewall-cmd --permanent --add-port=111/udp
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firewall-cmd --permanent --add-port=111/tcp
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Find a location in the system's home directory and checkout the Kolla repo::
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git clone https://github.com/openstack/kolla.git
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Developers can now tweak the Vagrantfile or bring up the default AIO
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Centos7-based environment::
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cd kolla/dev/vagrant && vagrant up
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The command ``vagrant status`` provides a quick overview of the VMs composing
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the environment.
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Vagrant Up
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----------
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Once Vagrant has completed deploying all nodes, the next step is to launch
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Kolla. First, connect with the *operator* node::
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vagrant ssh operator
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To speed things up, there is a local registry running on the operator. All
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nodes are configured so they can use this insecure repo to pull from, and use
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it as a mirror. Ansible may use this registry to pull images from.
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All nodes have a local folder shared between the group and the hypervisor, and
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a folder shared between *all* nodes and the hypervisor. This mapping is lost
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after reboots, so make sure to use the command ``vagrant reload <node>`` when
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reboots are required. Having this shared folder provides a method to supply
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a different docker binary to the cluster. The shared folder is also used to
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store the docker-registry files, so they are save from destructive operations
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like ``vagrant destroy``.
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Building images
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^^^^^^^^^^^^^^^
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Once logged on the *operator* VM call the ``kolla-build`` utility::
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kolla-build
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``kolla-build`` accept arguments as documented in :doc:`image-building`. It
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builds Docker images and pushes them to the local registry if the *push*
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option is enabled (in Vagrant this is the default behaviour).
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Deploying OpenStack with Kolla
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Deploy AIO with::
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sudo kolla-ansible deploy
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Deploy multinode with::
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sudo kolla-ansible deploy -i /usr/share/kolla/ansible/inventory/multinode
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Validate OpenStack is operational::
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source ~/openrc
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openstack user list
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Or navigate to http://10.10.10.254/ with a web browser.
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Further Reading
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---------------
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All Vagrant documentation can be found at
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`docs.vagrantup.com <http://docs.vagrantup.com>`__.
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