191 lines
6.6 KiB
ReStructuredText
191 lines
6.6 KiB
ReStructuredText
.. vagrant-dev-env:
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====================================
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Development Environment with Vagrant
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====================================
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This guide describes how to use `Vagrant <http://vagrantup.com>`__ to assist in
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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** or **multi-node** deployments.
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**all-in-one** is the default.
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In the case of **multi-node** deployment, the Vagrant setup builds a cluster
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with 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 primary NIC
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is behind a NAT interface for connecting with the Internet. The third NIC is
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connected without IP configuration to a public bridge interface. This may be
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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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Install required dependencies as follows:
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On CentOS::
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sudo yum install ruby-devel libvirt-devel zlib-devel libpng-devel gcc \
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qemu-kvm qemu-img libvirt libvirt-python libvirt-client virt-install \
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bridge-utils
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On Ubuntu 16.04 or later::
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sudo apt-get install vagrant ruby-dev ruby-libvirt python-libvirt libvirt-dev nfs-kernel-server zlib1g-dev libpng12-dev gcc git
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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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If you are going to use VirtualBox, then install vagrant-vbguest::
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vagrant plugin install vagrant-vbguest
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Vagrant supports a wide range of virtualization technologies. If VirtualBox is
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used, the vbguest plugin will be required to install the VirtualBox Guest
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Additions in the virtual machine::
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vagrant plugin install vagrant-vbguest
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This documentation focuses on libvirt specifics. To install vagrant-libvirt
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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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To use libvirt from Vagrant with a low privileges user without being asked for
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a password, add the user to the libvirt group::
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sudo gpasswd -a ${USER} libvirt
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newgrp libvirt
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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 CentOS::
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# Add the virtual interfaces to the internal zone
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sudo firewall-cmd --zone=internal --add-interface=virbr0
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sudo firewall-cmd --zone=internal --add-interface=virbr1
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# Enable nfs, rpc-bind and mountd services for firewalld
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sudo firewall-cmd --permanent --zone=internal --add-service=nfs
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sudo firewall-cmd --permanent --zone=internal --add-service=rpc-bind
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sudo firewall-cmd --permanent --zone=internal --add-service=mountd
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sudo firewall-cmd --permanent --zone=internal --add-port=2049/udp
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sudo firewall-cmd --permanent --add-port=2049/tcp
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sudo firewall-cmd --permanent --add-port=111/udp
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sudo firewall-cmd --permanent --add-port=111/tcp
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sudo firewall-cmd --reload
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# Start required services for NFS
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sudo systemctl restart firewalld
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sudo systemctl start nfs-server
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sudo systemctl start rpcbind.service
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Ensure your system has libvirt and associated software installed and setup
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correctly. On CentOS::
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sudo systemctl start libvirtd
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sudo systemctl enable libvirtd
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Find a location in the system's home directory and checkout Kolla repos::
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git clone https://git.openstack.org/openstack/kolla-ansible
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git clone https://git.openstack.org/openstack/kolla
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Both repos must share the same parent directory so the bootstrap code can
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locate them.
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Developers can now tweak the Vagrantfile or bring up the default **all-in-one**
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CentOS 7-based environment::
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cd kolla-ansible/contrib/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 `Building Container Images`_.
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It 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 **all-in-one** with::
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sudo kolla-ansible deploy
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Deploy multinode
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On Centos 7::
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sudo kolla-ansible deploy -i /usr/share/kolla-ansible/ansible/inventory/multinode
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On Ubuntu 16.04 or later::
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sudo kolla-ansible deploy -i /usr/local/share/kolla-ansible/ansible/inventory/multinode
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Validate OpenStack is operational::
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kolla-ansible post-deploy
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. /etc/kolla/admin-openrc.sh
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openstack user list
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Or navigate to http://172.28.128.254/ 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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.. _Building Container Images: https://docs.openstack.org/kolla/latest/image-building.html
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