############################################################################## # Copyright (c) 2017 Tim Rozet (trozet@redhat.com) and others. # # All rights reserved. This program and the accompanying materials # are made available under the terms of the Apache License, Version 2.0 # which accompanies this distribution, and is available at # http://www.apache.org/licenses/LICENSE-2.0 ############################################################################## import libvirt import logging import os import platform import shutil import subprocess import time from apex.virtual import utils as virt_utils from apex.virtual import configure_vm as vm_lib from apex.common import constants from apex.common import utils class ApexUndercloudException(Exception): pass class Undercloud: """ This class represents an Apex Undercloud VM """ def __init__(self, image_path, template_path, root_pw=None, external_network=False): self.ip = None self.root_pw = root_pw self.external_net = external_network self.volume = os.path.join(constants.LIBVIRT_VOLUME_PATH, 'undercloud.qcow2') self.image_path = image_path self.template_path = template_path self.vm = None if Undercloud._get_vm(): logging.error("Undercloud VM already exists. Please clean " "before creating") raise ApexUndercloudException("Undercloud VM already exists!") self.create() @staticmethod def _get_vm(): conn = libvirt.open('qemu:///system') try: vm = conn.lookupByName('undercloud') return vm except libvirt.libvirtError: logging.debug("No undercloud VM exists") def create(self): networks = ['admin'] if self.external_net: networks.append('external') console = 'ttyAMA0' if platform.machine() == 'aarch64' else 'ttyS0' self.vm = vm_lib.create_vm(name='undercloud', image=self.volume, baremetal_interfaces=networks, direct_boot='overcloud-full', kernel_args=['console={}'.format(console), 'root=/dev/sda'], default_network=True, template_dir=self.template_path) self.setup_volumes() self.inject_auth() def _set_ip(self): ip_out = self.vm.interfaceAddresses( libvirt.VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE, 0) if ip_out: for (name, val) in ip_out.items(): for ipaddr in val['addrs']: if ipaddr['type'] == libvirt.VIR_IP_ADDR_TYPE_IPV4: self.ip = ipaddr['addr'] return True def start(self): """ Start Undercloud VM :return: None """ if self.vm.isActive(): logging.info("Undercloud already started") else: logging.info("Starting undercloud") self.vm.create() # give 10 seconds to come up time.sleep(10) # set IP for x in range(5): if self._set_ip(): logging.info("Undercloud started. IP Address: {}".format( self.ip)) break logging.debug("Did not find undercloud IP in {} " "attempts...".format(x)) time.sleep(10) else: logging.error("Cannot find IP for Undercloud") raise ApexUndercloudException( "Unable to find IP for undercloud. Check if VM booted " "correctly") def configure(self, net_settings, playbook, apex_temp_dir): """ Configures undercloud VM :param net_setings: Network settings for deployment :param playbook: playbook to use to configure undercloud :param apex_temp_dir: temporary apex directory to hold configs/logs :return: None """ logging.info("Configuring Undercloud...") # run ansible ansible_vars = Undercloud.generate_config(net_settings) ansible_vars['apex_temp_dir'] = apex_temp_dir try: utils.run_ansible(ansible_vars, playbook, host=self.ip, user='stack') except subprocess.CalledProcessError: logging.error( "Failed to install undercloud..." "please check log: {}".format(os.path.join( apex_temp_dir, 'apex-undercloud-install.log'))) raise ApexUndercloudException('Failed to install undercloud') logging.info("Undercloud installed!") def setup_volumes(self): for img_file in ('overcloud-full.vmlinuz', 'overcloud-full.initrd', 'undercloud.qcow2'): src_img = os.path.join(self.image_path, img_file) dest_img = os.path.join(constants.LIBVIRT_VOLUME_PATH, img_file) if not os.path.isfile(src_img): raise ApexUndercloudException( "Required source file does not exist:{}".format(src_img)) if os.path.exists(dest_img): os.remove(dest_img) shutil.copyfile(src_img, dest_img) # TODO(trozet):check if resize needed right now size is 50gb # there is a lib called vminspect which has some dependencies and is # not yet available in pip. Consider switching to this lib later. # execute ansible playbook def inject_auth(self): virt_ops = list() # virt-customize keys/pws if self.root_pw: pw_op = "password:{}".format(self.root_pw) virt_ops.append({constants.VIRT_PW: pw_op}) # ssh key setup virt_ops.append({constants.VIRT_RUN_CMD: 'mkdir -p /root/.ssh'}) virt_ops.append({constants.VIRT_UPLOAD: '/root/.ssh/id_rsa.pub:/root/.ssh/authorized_keys'}) run_cmds = [ 'chmod 600 /root/.ssh/authorized_keys', 'restorecon /root/.ssh/authorized_keys', 'cp /root/.ssh/authorized_keys /home/stack/.ssh/', 'chown stack:stack /home/stack/.ssh/authorized_keys', 'chmod 600 /home/stack/.ssh/authorized_keys' ] for cmd in run_cmds: virt_ops.append({constants.VIRT_RUN_CMD: cmd}) virt_utils.virt_customize(virt_ops, self.volume) @staticmethod def generate_config(ns): """ Generates a dictionary of settings for configuring undercloud :param ns: network settings to derive undercloud settings :return: dictionary of settings """ ns_admin = ns['networks']['admin'] intro_range = ns['apex']['networks']['admin']['introspection_range'] config = dict() config['undercloud_config'] = [ "enable_ui false", "undercloud_update_packages false", "undercloud_debug false", "undercloud_hostname undercloud.{}".format(ns['dns-domain']), "local_ip {}/{}".format(str(ns_admin['installer_vm']['ip']), str(ns_admin['cidr']).split('/')[1]), "network_gateway {}".format(str(ns_admin['installer_vm']['ip'])), "network_cidr {}".format(str(ns_admin['cidr'])), "dhcp_start {}".format(str(ns_admin['dhcp_range'][0])), "dhcp_end {}".format(str(ns_admin['dhcp_range'][1])), "inspection_iprange {}".format(','.join(intro_range)) ] config['ironic_config'] = [ "disk_utils iscsi_verify_attempts 30", "disk_partitioner check_device_max_retries 40" ] config['nova_config'] = [ "dns_domain {}".format(ns['dns-domain']), "dhcp_domain {}".format(ns['dns-domain']) ] config['neutron_config'] = [ "dns_domain {}".format(ns['dns-domain']), ] # FIXME(trozet): possible bug here with not using external network ns_external = ns['networks']['external'][0] config['external_network'] = { "vlan": ns_external['installer_vm']['vlan'], "ip": ns_external['installer_vm']['ip'], "prefix": str(ns_external['cidr']).split('/')[1], "enabled": ns_external['enabled'] } # Check if this is an ARM deployment config['aarch64'] = platform.machine() == 'aarch64' return config