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diff --git a/agents/evacuate/fence_evacuate.py b/agents/evacuate/fence_evacuate.py
index 88837dd8..53d6fd15 100644
--- a/agents/evacuate/fence_evacuate.py
+++ b/agents/evacuate/fence_evacuate.py
@@ -1,428 +1,428 @@
#!@PYTHON@ -tt
import sys
import time
import atexit
import logging
import inspect
import requests.exceptions
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *
from fencing import fail_usage, is_executable, run_command, run_delay
EVACUABLE_TAG = "evacuable"
TRUE_TAGS = ['true']
def get_power_status(connection, options):
status = "unknown"
logging.debug("get action: " + options["--action"])
if connection:
try:
services = connection.services.list(host=options["--plug"], binary="nova-compute")
for service in services:
logging.debug("Status of %s is %s, %s" % (service.binary, service.state, service.status))
if service.state == "up" and service.status == "enabled":
# Up and operational
status = "on"
elif service.state == "down" and service.status == "disabled":
# Down and fenced
status = "off"
elif service.state == "down":
# Down and requires fencing
status = "failed"
elif service.state == "up":
# Up and requires unfencing
status = "running"
else:
logging.warning("Unknown status detected from nova for %s: %s, %s" % (options["--plug"], service.state, service.status))
status = "%s %s" % (service.state, service.status)
break
except requests.exception.ConnectionError as err:
logging.warning("Nova connection failed: " + str(err))
return status
# NOTE(sbauza); We mimic the host-evacuate module since it's only a contrib
# module which is not stable
def _server_evacuate(connection, server, on_shared_storage):
success = False
error_message = ""
try:
logging.debug("Resurrecting instance: %s" % server)
(response, dictionary) = connection.servers.evacuate(server=server, on_shared_storage=on_shared_storage)
if response == None:
error_message = "No response while evacuating instance"
elif response.status_code == 200:
success = True
error_message = response.reason
else:
error_message = response.reason
except Exception as e:
error_message = "Error while evacuating instance: %s" % e
return {
"uuid": server,
"accepted": success,
"reason": error_message,
}
def _is_server_evacuable(server, evac_flavors, evac_images):
reason = "flavor "+server.flavor.get('id')
if server.flavor.get('id') in evac_flavors:
return True
if hasattr(server.image, 'get'):
if server.image.get('id') in evac_images:
return True
reason = reason +" and image "+server.image.get('id')
logging.debug("Instance is not evacuable: no match for %s" % reason)
return False
def _get_evacuable_flavors(connection):
result = []
- flavors = connection.flavors.list()
+ flavors = connection.flavors.list(is_public=None)
# Since the detailed view for all flavors doesn't provide the extra specs,
# we need to call each of the flavor to get them.
for flavor in flavors:
tag = flavor.get_keys().get(EVACUABLE_TAG)
if tag and tag.strip().lower() in TRUE_TAGS:
result.append(flavor.id)
return result
def _get_evacuable_images(connection):
result = []
images = []
if hasattr(connection, "images"):
images = connection.images.list(detailed=True)
elif hasattr(connection, "glance"):
# OSP12+
images = connection.glance.list()
for image in images:
if hasattr(image, 'metadata'):
tag = image.metadata.get(EVACUABLE_TAG)
if tag and tag.strip().lower() in TRUE_TAGS:
result.append(image.id)
elif hasattr(image, 'tags'):
# OSP12+
if EVACUABLE_TAG in image.tags:
result.append(image.id)
return result
def _host_evacuate(connection, options):
result = True
images = _get_evacuable_images(connection)
flavors = _get_evacuable_flavors(connection)
servers = connection.servers.list(search_opts={'host': options["--plug"], 'all_tenants': 1 })
if options["--instance-filtering"] == "False":
logging.debug("Not evacuating anything")
evacuables = []
elif len(flavors) or len(images):
logging.debug("Filtering images and flavors: %s %s" % (repr(flavors), repr(images)))
# Identify all evacuable servers
logging.debug("Checking %s" % repr(servers))
evacuables = [server for server in servers
if _is_server_evacuable(server, flavors, images)]
logging.debug("Evacuating %s" % repr(evacuables))
else:
logging.debug("Evacuating all images and flavors")
evacuables = servers
if options["--no-shared-storage"] != "False":
on_shared_storage = False
else:
on_shared_storage = True
for server in evacuables:
logging.debug("Processing %s" % server)
if hasattr(server, 'id'):
response = _server_evacuate(connection, server.id, on_shared_storage)
if response["accepted"]:
logging.debug("Evacuated %s from %s: %s" %
(response["uuid"], options["--plug"], response["reason"]))
else:
logging.error("Evacuation of %s on %s failed: %s" %
(response["uuid"], options["--plug"], response["reason"]))
result = False
else:
logging.error("Could not evacuate instance: %s" % server.to_dict())
# Should a malformed instance result in a failed evacuation?
# result = False
return result
def set_attrd_status(host, status, options):
logging.debug("Setting fencing status for %s to %s" % (host, status))
run_command(options, "attrd_updater -p -n evacuate -Q -N %s -U %s" % (host, status))
def set_power_status(connection, options):
logging.debug("set action: " + options["--action"])
if not connection:
return
if options["--action"] == "off" and not _host_evacuate(options):
sys.exit(1)
sys.exit(0)
def get_plugs_list(connection, options):
result = {}
if connection:
services = connection.services.list(binary="nova-compute")
for service in services:
longhost = service.host
shorthost = longhost.split('.')[0]
result[longhost] = ("", None)
result[shorthost] = ("", None)
return result
def create_nova_connection(options):
nova = None
try:
from novaclient import client
from novaclient.exceptions import NotAcceptable
except ImportError:
fail_usage("Nova not found or not accessible")
from keystoneauth1 import loading
from keystoneauth1 import session
from keystoneclient import discover
# Prefer the oldest and strip the leading 'v'
keystone_versions = discover.available_versions(options["--auth-url"])
keystone_version = keystone_versions[0]['id'][1:]
kwargs = dict(
auth_url=options["--auth-url"],
username=options["--username"],
password=options["--password"]
)
if discover.version_match("2", keystone_version):
kwargs["tenant_name"] = options["--tenant-name"]
elif discover.version_match("3", keystone_version):
kwargs["project_name"] = options["--tenant-name"]
kwargs["user_domain_name"] = options["--user-domain"]
kwargs["project_domain_name"] = options["--project-domain"]
loader = loading.get_plugin_loader('password')
keystone_auth = loader.load_from_options(**kwargs)
keystone_session = session.Session(auth=keystone_auth, verify=not "--insecure" in options)
versions = [ "2.11", "2" ]
for version in versions:
clientargs = inspect.getargspec(client.Client).varargs
# Some versions of Openstack prior to Ocata only
# supported positional arguments for username,
# password, and tenant.
#
# Versions since Ocata only support named arguments.
#
# So we need to use introspection to figure out how to
# create a Nova client.
#
# Happy days
#
if clientargs:
# OSP < 11
# ArgSpec(args=['version', 'username', 'password', 'project_id', 'auth_url'],
# varargs=None,
# keywords='kwargs', defaults=(None, None, None, None))
nova = client.Client(version,
None, # User
None, # Password
None, # Tenant
None, # Auth URL
insecure="--insecure" in options,
region_name=options["--region-name"],
endpoint_type=options["--endpoint-type"],
session=keystone_session, auth=keystone_auth,
http_log_debug="--verbose" in options)
else:
# OSP >= 11
# ArgSpec(args=['version'], varargs='args', keywords='kwargs', defaults=None)
nova = client.Client(version,
region_name=options["--region-name"],
endpoint_type=options["--endpoint-type"],
session=keystone_session, auth=keystone_auth,
http_log_debug="--verbose" in options)
try:
nova.hypervisors.list()
return nova
except NotAcceptable as e:
logging.warning(e)
except Exception as e:
logging.warning("Nova connection failed. %s: %s" % (e.__class__.__name__, e))
logging.warning("Couldn't obtain a supported connection to nova, tried: %s\n" % repr(versions))
return None
def define_new_opts():
all_opt["endpoint_type"] = {
"getopt" : "e:",
"longopt" : "endpoint-type",
"help" : "-e, --endpoint-type=[endpoint] Nova Endpoint type (publicURL, internalURL, adminURL)",
"required" : "0",
"shortdesc" : "Nova Endpoint type",
"default" : "internalURL",
"order": 1,
}
all_opt["tenant_name"] = {
"getopt" : "t:",
"longopt" : "tenant-name",
"help" : "-t, --tenant-name=[name] Keystone v2 Tenant or v3 Project Name",
"required" : "0",
"shortdesc" : "Keystone Admin Tenant or v3 Project",
"default" : "",
"order": 1,
}
all_opt["user-domain"] = {
"getopt" : "u:",
"longopt" : "user-domain",
"help" : "-u, --user-domain=[name] Keystone v3 User Domain",
"required" : "0",
"shortdesc" : "Keystone v3 User Domain",
"default" : "Default",
"order": 2,
}
all_opt["project-domain"] = {
"getopt" : "P:",
"longopt" : "project-domain",
"help" : "-P, --project-domain=[name] Keystone v3 Project Domain",
"required" : "0",
"shortdesc" : "Keystone v3 Project Domain",
"default" : "Default",
"order": 2,
}
all_opt["auth_url"] = {
"getopt" : "k:",
"longopt" : "auth-url",
"help" : "-k, --auth-url=[url] Keystone Admin Auth URL",
"required" : "0",
"shortdesc" : "Keystone Admin Auth URL",
"default" : "",
"order": 1,
}
all_opt["region_name"] = {
"getopt" : ":",
"longopt" : "region-name",
"help" : "--region-name=[region] Region Name",
"required" : "0",
"shortdesc" : "Region Name",
"default" : "",
"order": 1,
}
all_opt["insecure"] = {
"getopt" : "",
"longopt" : "insecure",
"help" : "--insecure Explicitly allow agent to perform \"insecure\" TLS (https) requests",
"required" : "0",
"shortdesc" : "Allow Insecure TLS Requests",
"order": 2,
}
all_opt["domain"] = {
"getopt" : "d:",
"longopt" : "domain",
"help" : "-d, --domain=[string] DNS domain in which hosts live, useful when the cluster uses short names and nova uses FQDN",
"required" : "0",
"shortdesc" : "DNS domain in which hosts live",
"order": 5,
}
all_opt["instance_filtering"] = {
"getopt" : "",
"longopt" : "instance-filtering",
"help" : "--instance-filtering Allow instances created from images and flavors with evacuable=true to be evacuated (or all if no images/flavors have been tagged)",
"required" : "0",
"shortdesc" : "Allow instances to be evacuated",
"default" : "True",
"order": 5,
}
all_opt["no_shared_storage"] = {
"getopt" : "",
"longopt" : "no-shared-storage",
"help" : "--no-shared-storage Disable functionality for shared storage",
"required" : "0",
"shortdesc" : "Disable functionality for dealing with shared storage",
"default" : "False",
"order": 5,
}
all_opt["compute-domain"] = {
"getopt" : ":",
"longopt" : "compute-domain",
"help" : "--compute-domain=[string] Replaced by --domain",
"required" : "0",
"shortdesc" : "Replaced by domain",
"order": 6,
}
def main():
atexit.register(atexit_handler)
device_opt = ["login", "passwd", "tenant_name", "auth_url",
"no_login", "no_password", "port", "domain", "compute-domain",
"project-domain", "user-domain", "no_shared_storage",
"endpoint_type", "instance_filtering", "insecure", "region_name"]
define_new_opts()
all_opt["shell_timeout"]["default"] = "180"
options = check_input(device_opt, process_input(device_opt))
docs = {}
docs["shortdesc"] = "Fence agent for the automatic resurrection of OpenStack compute instances"
docs["longdesc"] = "Used to reschedule flagged instances"
docs["vendorurl"] = ""
show_docs(options, docs)
run_delay(options)
# workaround to avoid regressions
if "--compute-domain" in options and options["--compute-domain"]:
options["--domain"] = options["--compute-domain"]
del options["--domain"]
# Disable insecure-certificate-warning message
if "--insecure" in options:
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
connection = create_nova_connection(options)
# Un-evacuating a server doesn't make sense
if options["--action"] in ["on"]:
logging.error("Action %s is not supported by this agent" % (options["--action"]))
sys.exit(1)
if options["--action"] in ["off", "reboot"]:
status = get_power_status(connection, options)
if status != "off":
logging.error("Cannot resurrect instances from %s in state '%s'" % (options["--plug"], status))
sys.exit(1)
elif not _host_evacuate(connection, options):
logging.error("Resurrection of instances from %s failed" % (options["--plug"]))
sys.exit(1)
logging.info("Resurrection of instances from %s complete" % (options["--plug"]))
sys.exit(0)
result = fence_action(connection, options, set_power_status, get_power_status, get_plugs_list, None)
sys.exit(result)
if __name__ == "__main__":
main()

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