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author | Pedro Alvarez <pedro.alvarez@codethink.co.uk> | 2013-08-29 16:35:26 +0000 |
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committer | Pedro Alvarez <pedro.alvarez@codethink.co.uk> | 2013-09-11 10:14:46 +0100 |
commit | 04c0e1f4e7ae5b0fe9eeadf68cfcc5645b3399ea (patch) | |
tree | 91e03c019cd7114e7b630d719c817e1db44f060a /morphlib/exts/openstack.write | |
parent | 0d1c1e0905a627df60b925e9508d4ebfb08a9415 (diff) | |
download | morph-04c0e1f4e7ae5b0fe9eeadf68cfcc5645b3399ea.tar.gz |
exts: Add openstack configure/write exts
openstackssh.write: Write extension which deploy a raw image of baserock
directly to an OpenStack machine using python-glanceclient. The raw image
deployed has modified its bootloader to use virtio disks.
vdaboot.configure: Configuration extension to change the mount point of
"/" to use virtio disks (/dev/vda).
Diffstat (limited to 'morphlib/exts/openstack.write')
-rwxr-xr-x | morphlib/exts/openstack.write | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/morphlib/exts/openstack.write b/morphlib/exts/openstack.write new file mode 100755 index 00000000..8ee8767e --- /dev/null +++ b/morphlib/exts/openstack.write @@ -0,0 +1,140 @@ +#!/usr/bin/python +# Copyright (C) 2013 Codethink Limited +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + + +'''A Morph deployment write extension for deploying to OpenStack.''' + + +import cliapp +import os +import tempfile +import urlparse + +import morphlib.writeexts + + +class OpenStackWriteExtension(morphlib.writeexts.WriteExtension): + + '''Configure a raw disk image into an OpenStack host. + + The raw disk image is created during Morph's deployment and the + image is deployed in OpenStack using python-glanceclient. + + The location command line argument is the authentification url + of the OpenStack server using the following syntax: + + http://HOST:PORT/VERSION + + where + + * HOST is the host running OpenStack + * PORT is the port which is using OpenStack for authentifications. + * VERSION is the authentification version of OpenStack (Only v2.0 + supported) + + This extension needs in the environment the following variables: + + * OPENSTACK_USER is the username to use in the deployment. + * OPENSTACK_TENANT is the project name to use in the deployment. + * OPENSTACK_IMAGENAME is the name of the image to create. + * OPENSTACK_PASSWORD is the password of the user. + + + The extension will connect to OpenStack using python-glanceclient + to configure a raw image. + + ''' + + def process_args(self, args): + if len(args) != 2: + raise cliapp.AppException('Wrong number of command line args') + + temp_root, location = args + self.check_location(location) + + os_params = self.get_openstack_parameters() + + fd, raw_disk = tempfile.mkstemp() + os.close(fd) + self.create_local_system(temp_root, raw_disk) + self.status(msg='Temporary disk image has been created at %s' + % raw_disk) + + self.set_extlinux_root_to_virtio(raw_disk) + + self.configure_openstack_image(raw_disk, location, os_params) + + def set_extlinux_root_to_virtio(self, raw_disk): + '''Re-configures extlinux to use virtio disks''' + self.status(msg='Updating extlinux.conf') + mp = self.mount(raw_disk) + try: + path = os.path.join(mp, 'extlinux.conf') + + with open(path) as f: + extlinux_conf = f.read() + + extlinux_conf = extlinux_conf.replace('root=/dev/sda', + 'root=/dev/vda') + with open(path, "w") as f: + f.write(extlinux_conf) + + finally: + self.unmount(mp) + + def get_openstack_parameters(self): + '''Check the environment variables needed and returns all. + + The environment variables are described in the class documentation. + ''' + + keys = ('OPENSTACK_USER', 'OPENSTACK_TENANT', + 'OPENSTACK_IMAGENAME', 'OPENSTACK_PASSWORD') + for key in keys: + if key not in os.environ: + raise cliapp.AppException(key + ' was not given') + return (os.environ[key] for key in keys) + + def check_location(self, location): + x = urlparse.urlparse(location) + if x.scheme != 'http': + raise cliapp.AppException('URL schema must be http in %s' \ + % location) + if (x.path != '/v2.0' and x.path != '/v2.0/'): + raise cliapp.AppException('API version must be v2.0 in %s'\ + % location) + + def configure_openstack_image(self, raw_disk, auth_url, os_params): + '''Configure the image in OpenStack using glance-client''' + self.status(msg='Configuring OpenStack image...') + + username, tenant_name, image_name, password = os_params + cmdline = ['glance', + '--os-username', username, + '--os-tenant-name', tenant_name, + '--os-password', password, + '--os-auth-url', auth_url, + 'image-create', + '--name=%s' % image_name, + '--disk-format=raw', + '--container-format', 'bare', + '--file', raw_disk] + cliapp.runcmd(cmdline) + + self.status(msg='Image configured.') + +OpenStackWriteExtension().run() + |