.. vagrant-dev-env: ==================================== Development Environment with Vagrant ==================================== This guide describes how to use `Vagrant `__ to assist in developing for Kolla. Vagrant is a tool to assist in scripted creation of virtual machines. Vagrant takes care of setting up CentOS-based VMs for Kolla development, each with proper hardware like memory amount and number of network interfaces. Getting Started =============== The Vagrant script implements **all-in-one** or **multi-node** deployments. **all-in-one** is the default. In the case of **multi-node** deployment, the Vagrant setup builds a cluster with the following nodes by default: * 3 control nodes * 1 compute node * 1 storage node (Note: ceph requires at least 3 storage nodes) * 1 network node * 1 operator node The cluster node count can be changed by editing the Vagrantfile. Kolla runs from the operator node to deploy OpenStack. All nodes are connected with each other on the secondary NIC. The primary NIC is behind a NAT interface for connecting with the Internet. The third NIC is connected without IP configuration to a public bridge interface. This may be used for Neutron/Nova to connect to instances. Start by downloading and installing the Vagrant package for the distro of choice. Various downloads can be found at the `Vagrant downloads `__. Install required dependencies as follows: On CentOS:: sudo yum install ruby-devel libvirt-devel zlib-devel libpng-devel gcc \ qemu-kvm qemu-img libvirt libvirt-python libvirt-client virt-install \ bridge-utils On Ubuntu 16.04 or later:: sudo apt-get install vagrant ruby-dev ruby-libvirt python-libvirt libvirt-dev nfs-kernel-server zlib1g-dev libpng12-dev gcc git .. note:: Many distros ship outdated versions of Vagrant by default. When in doubt, always install the latest from the downloads page above. Next install the hostmanager plugin so all hosts are recorded in ``/etc/hosts`` (inside each vm):: vagrant plugin install vagrant-hostmanager If you are going to use VirtualBox, then install vagrant-vbguest:: vagrant plugin install vagrant-vbguest Vagrant supports a wide range of virtualization technologies. If VirtualBox is used, the vbguest plugin will be required to install the VirtualBox Guest Additions in the virtual machine:: vagrant plugin install vagrant-vbguest This documentation focuses on libvirt specifics. To install vagrant-libvirt plugin:: vagrant plugin install --plugin-version ">= 0.0.31" vagrant-libvirt Some Linux distributions offer vagrant-libvirt packages, but the version they provide tends to be too old to run Kolla. A version of >= 0.0.31 is required. To use libvirt from Vagrant with a low privileges user without being asked for a password, add the user to the libvirt group:: sudo gpasswd -a ${USER} libvirt newgrp libvirt Setup NFS to permit file sharing between host and VMs. Contrary to the rsync method, NFS allows both way synchronization and offers much better performance than VirtualBox shared folders. On CentOS:: # Add the virtual interfaces to the internal zone sudo firewall-cmd --zone=internal --add-interface=virbr0 sudo firewall-cmd --zone=internal --add-interface=virbr1 # Enable nfs, rpc-bind and mountd services for firewalld sudo firewall-cmd --permanent --zone=internal --add-service=nfs sudo firewall-cmd --permanent --zone=internal --add-service=rpc-bind sudo firewall-cmd --permanent --zone=internal --add-service=mountd sudo firewall-cmd --permanent --zone=internal --add-port=2049/udp sudo firewall-cmd --permanent --add-port=2049/tcp sudo firewall-cmd --permanent --add-port=111/udp sudo firewall-cmd --permanent --add-port=111/tcp sudo firewall-cmd --reload # Start required services for NFS sudo systemctl restart firewalld sudo systemctl start nfs-server sudo systemctl start rpcbind.service Ensure your system has libvirt and associated software installed and setup correctly. On CentOS:: sudo systemctl start libvirtd sudo systemctl enable libvirtd Find a location in the system's home directory and checkout Kolla repos:: git clone https://git.openstack.org/openstack/kolla-ansible git clone https://git.openstack.org/openstack/kolla Both repos must share the same parent directory so the bootstrap code can locate them. Developers can now tweak the Vagrantfile or bring up the default **all-in-one** CentOS 7-based environment:: cd kolla-ansible/contrib/dev/vagrant && vagrant up The command ``vagrant status`` provides a quick overview of the VMs composing the environment. Vagrant Up ========== Once Vagrant has completed deploying all nodes, the next step is to launch Kolla. First, connect with the **operator** node:: vagrant ssh operator To speed things up, there is a local registry running on the operator. All nodes are configured so they can use this insecure repo to pull from, and use it as a mirror. Ansible may use this registry to pull images from. All nodes have a local folder shared between the group and the hypervisor, and a folder shared between **all** nodes and the hypervisor. This mapping is lost after reboots, so make sure to use the command ``vagrant reload `` when reboots are required. Having this shared folder provides a method to supply a different Docker binary to the cluster. The shared folder is also used to store the docker-registry files, so they are save from destructive operations like ``vagrant destroy``. Building images --------------- Once logged on the **operator** VM call the ``kolla-build`` utility:: kolla-build ``kolla-build`` accept arguments as documented in `Building Container Images`_. It builds Docker images and pushes them to the local registry if the **push** option is enabled (in Vagrant this is the default behaviour). Deploying OpenStack with Kolla ------------------------------ Deploy **all-in-one** with:: sudo kolla-ansible deploy Deploy multinode On Centos 7:: sudo kolla-ansible deploy -i /usr/share/kolla-ansible/ansible/inventory/multinode On Ubuntu 16.04 or later:: sudo kolla-ansible deploy -i /usr/local/share/kolla-ansible/ansible/inventory/multinode Validate OpenStack is operational:: kolla-ansible post-deploy . /etc/kolla/admin-openrc.sh openstack user list Or navigate to http://172.28.128.254/ with a web browser. Further Reading =============== All Vagrant documentation can be found at `docs.vagrantup.com `__. .. _Building Container Images: http://docs.openstack.org/developer/kolla/image-building.html