performa/os-faults
Code Issues Proposed changes
os-faults/os_faults/drivers/devstack.py
Anton Studenov 2fafe5f9b9 Add serial parameter to cloud drivers 
'serial' parameter defines how many hosts Ansible should
manage at a single time.

Change-Id: I363ffda9cebd6533d58c23ba795b702b7431301d
2017-04-25 08:49:28 +00:00

281 lines
8.9 KiB
Python
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from os_faults.ansible import executor
from os_faults.api import cloud_management
from os_faults.api import node_collection
from os_faults.api import node_discover
from os_faults.common import service
LOG = logging.getLogger(__name__)
class DevStackNode(node_collection.NodeCollection):
def connect(self, network_name):
raise NotImplementedError
def disconnect(self, network_name):
raise NotImplementedError
class ServiceInScreen(service.ServiceAsProcess):
"""Service in Screen
This driver controls service that is started in a window of
`screen` tool.
**Example configuration:**
.. code-block:: yaml
services:
app:
driver: screen
args:
window_name: app
grep: my_app
port: ['tcp', 4242]
parameters:
- **window_name** - name of a service
- **grep** - regexp for grep to find process PID
- **port** - tuple with two values - potocol, port number (optional)
"""
NAME = 'screen'
DESCRIPTION = 'Service in screen'
CONFIG_SCHEMA = {
'type': 'object',
'properties': {
'window_name': {'type': 'string'},
'grep': {'type': 'string'},
'port': service.PORT_SCHEMA,
},
'required': ['grep', 'window_name'],
'additionalProperties': False,
}
def __init__(self, *args, **kwargs):
super(ServiceInScreen, self).__init__(*args, **kwargs)
self.window_name = self.config['window_name']
# sends ctr+c, arrow up key, enter key
self.restart_cmd = (
"screen -S stack -p {window_name} -X "
"stuff $'\\003'$'\\033[A'$(printf \\\\r)").format(
window_name=self.window_name)
# sends ctr+c
self.terminate_cmd = (
"screen -S stack -p {window_name} -X "
"stuff $'\\003'").format(
window_name=self.window_name)
# sends arrow up key, enter key
self.start_cmd = (
"screen -S stack -p {window_name} -X "
"stuff $'\\033[A'$(printf \\\\r)").format(
window_name=self.window_name)
class DevStackManagement(cloud_management.CloudManagement,
node_discover.NodeDiscover):
"""Devstack driver.
This driver requires devstack installed in screen mode (USE_SCREEN=True).
Supports discovering of node MAC addreses.
**Example configuration:**
.. code-block:: yaml
cloud_management:
driver: devstack
args:
address: 192.168.1.10
username: ubuntu
password: ubuntu_pass
private_key_file: ~/.ssh/id_rsa_devstack
slaves:
- 192.168.1.11
- 192.168.1.12
iface: eth1
parameters:
- **address** - ip address of any devstack node
- **username** - username for all nodes
- **password** - password for all nodes (optional)
- **private_key_file** - path to key file (optional)
- **slaves** - list of ips for additional nodes (optional)
- **iface** - network interface name to retrive mac address (optional)
- **serial** - how many hosts Ansible should manage at a single time.
(optional) default: 10
"""
NAME = 'devstack'
DESCRIPTION = 'DevStack management driver'
NODE_CLS = DevStackNode
SERVICES = {
'keystone': {
'driver': 'process',
'args': {
'grep': 'keystone-',
'restart_cmd': 'sudo service apache2 restart',
'terminate_cmd': 'sudo service apache2 stop',
'start_cmd': 'sudo service apache2 start',
}
},
'mysql': {
'driver': 'process',
'args': {
'grep': 'mysqld',
'restart_cmd': 'sudo service mysql restart',
'terminate_cmd': 'sudo service mysql stop',
'start_cmd': 'sudo service mysql start',
'port': ['tcp', 3307],
}
},
'rabbitmq': {
'driver': 'process',
'args': {
'grep': 'rabbitmq-server',
'restart_cmd': 'sudo service rabbitmq-server restart',
'terminate_cmd': 'sudo service rabbitmq-server stop',
'start_cmd': 'sudo service rabbitmq-server start',
}
},
'nova-api': {
'driver': 'screen',
'args': {
'grep': 'nova-api',
'window_name': 'n-api',
}
},
'glance-api': {
'driver': 'screen',
'args': {
'grep': 'glance-api',
'window_name': 'g-api',
}
},
'nova-compute': {
'driver': 'screen',
'args': {
'grep': 'nova-compute',
'window_name': 'n-cpu',
}
},
'nova-scheduler': {
'driver': 'screen',
'args': {
'grep': 'nova-scheduler',
'window_name': 'n-sch',
}
},
'ironic-api': {
'driver': 'screen',
'args': {
'grep': 'ironic-api',
'window_name': 'ir-api',
}
},
'ironic-conductor': {
'driver': 'screen',
'args': {
'grep': 'ironic-conductor',
'window_name': 'ir-cond',
}
},
}
SUPPORTED_NETWORKS = ['all-in-one']
CONFIG_SCHEMA = {
'type': 'object',
'$schema': 'http://json-schema.org/draft-04/schema#',
'properties': {
'address': {'type': 'string'},
'username': {'type': 'string'},
'password': {'type': 'string'},
'private_key_file': {'type': 'string'},
'slaves': {
'type': 'array',
'items': {'type': 'string'},
},
'iface': {'type': 'string'},
'serial': {'type': 'integer', 'minimum': 1},
},
'required': ['address', 'username'],
'additionalProperties': False,
}
def __init__(self, cloud_management_params):
super(DevStackManagement, self).__init__()
self.node_discover = self # supports discovering
self.address = cloud_management_params['address']
self.username = cloud_management_params['username']
self.private_key_file = cloud_management_params.get('private_key_file')
self.slaves = cloud_management_params.get('slaves', [])
self.iface = cloud_management_params.get('iface', 'eth0')
self.serial = cloud_management_params.get('serial')
self.cloud_executor = executor.AnsibleRunner(
remote_user=self.username, private_key_file=self.private_key_file,
password=cloud_management_params.get('password'),
become=False, serial=self.serial)
self.hosts = [self.address]
if self.slaves:
self.hosts.extend(self.slaves)
self.nodes = None
def verify(self):
"""Verify connection to the cloud."""
nodes = self.get_nodes()
task = {'shell': 'screen -ls | grep -P "\\d+\\.stack"'}
results = self.execute_on_cloud(nodes.get_ips(), task)
hostnames = [result.host for result in results]
LOG.debug('DevStack hostnames: %s', hostnames)
LOG.info('Connected to cloud successfully')
def execute_on_cloud(self, hosts, task, raise_on_error=True):
"""Execute task on specified hosts within the cloud.
:param hosts: List of host FQDNs
:param task: Ansible task
:param raise_on_error: throw exception in case of error
:return: Ansible execution result (list of records)
"""
if raise_on_error:
return self.cloud_executor.execute(hosts, task)
else:
return self.cloud_executor.execute(hosts, task, [])
def discover_hosts(self):
if self.nodes is None:
get_mac_cmd = 'cat /sys/class/net/{}/address'.format(self.iface)
task = {'command': get_mac_cmd}
results = self.execute_on_cloud(self.hosts, task)
# TODO(astudenov): support fqdn
self.nodes = [node_collection.Host(ip=r.host,
mac=r.payload['stdout'],
fqdn='')
for r in results]
return self.nodes
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