def get_host_details(self, host):
"""Get Nova capabilities of a single host
:param host: UUID or name of nova-compute host
:return: Dict of capabilities or raise HostNotFound
"""
try:
hypervisor = self.nova.hypervisors.get(host)
except nova_exception.NotFound:
try:
hypervisors_list = self.nova.hypervisors.search(host)
except nova_exception.NotFound:
raise manager_exceptions.HostNotFound(host=host)
if len(hypervisors_list) > 1:
raise manager_exceptions.MultipleHostsFound(host)
else:
hypervisor_id = hypervisors_list[0].id
# NOTE(sbauza): No need to catch the exception as we're sure
# that the hypervisor exists
hypervisor = self.nova.hypervisors.get(hypervisor_id)
try:
return {
'id': hypervisor.id,
'hypervisor_hostname': hypervisor.hypervisor_hostname,
'service_name': hypervisor.service['host'],
'vcpus': hypervisor.vcpus,
'cpu_info': hypervisor.cpu_info,
'hypervisor_type': hypervisor.hypervisor_type,
'hypervisor_version': hypervisor.hypervisor_version,
'memory_mb': hypervisor.memory_mb,
'local_gb': hypervisor.local_gb
}
except AttributeError:
raise manager_exceptions.InvalidHost(host=host)
def get_host_details(self, host):
"""Get Nova capabilities of a single host
:param host: UUID, ID or name of nova-compute host
:return: Dict of capabilities or raise HostNotFound
"""
try:
# NOTE(tetsuro): Only id (microversion < 2.53) or uuid
# (microversion >= 2.53) is acceptable for the
# `novaclient.hypervisors.get` argument. The invalid arguments
# result in NotFound exception for microversion < 2.53 and
# BadRequest exception for microversion >= 2.53
hypervisor = self.nova.hypervisors.get(host)
except (nova_exception.NotFound, nova_exception.BadRequest):
# Name (not id or uuid) is given for the `host` parameter.
try:
hypervisors_list = self.nova.hypervisors.search(host)
except nova_exception.NotFound:
raise manager_exceptions.HostNotFound(host=host)
if len(hypervisors_list) > 1:
raise manager_exceptions.MultipleHostsFound(host=host)
else:
hypervisor_id = hypervisors_list[0].id
# NOTE(sbauza): No need to catch the exception as we're sure
# that the hypervisor exists
hypervisor = self.nova.hypervisors.get(hypervisor_id)
az_name = ''
if CONF.nova.az_aware:
host_name = hypervisor.service['host']
for zone in self.nova.availability_zones.list(detailed=True):
if (zone.hosts and host_name in zone.hosts
and 'nova-compute' in zone.hosts[host_name]):
az_name = zone.zoneName
try:
# NOTE(tetsuro): compute API microversion 2.28 changes cpu_info
# from string to object
cpu_info = str(hypervisor.cpu_info)
return {
'id': hypervisor.id,
'availability_zone': az_name,
'hypervisor_hostname': hypervisor.hypervisor_hostname,
'service_name': hypervisor.service['host'],
'vcpus': hypervisor.vcpus,
'cpu_info': cpu_info,
'hypervisor_type': hypervisor.hypervisor_type,
'hypervisor_version': hypervisor.hypervisor_version,
'memory_mb': hypervisor.memory_mb,
'local_gb': hypervisor.local_gb
}
except AttributeError:
raise manager_exceptions.InvalidHost(host=host)
def get_servers_per_host(self, host):
"""List all servers of a nova-compute host
:param host: Name (not UUID) of nova-compute host
:return: Dict of servers or None
"""
try:
hypervisors_list = self.nova.hypervisors.search(host, servers=True)
except nova_exception.NotFound:
raise manager_exceptions.HostNotFound(host=host)
if len(hypervisors_list) > 1:
raise manager_exceptions.MultipleHostsFound(host=host)
else:
try:
return hypervisors_list[0].servers
except AttributeError:
# NOTE(sbauza): nova.hypervisors.search(servers=True) returns
# a list of hosts without 'servers' attribute if no servers
# are running on that host
return None