def terminate_pool_instances(self, pool, instances, config, terminateByPool=False):
""" Terminate an instance with the given configuration """
instance_ids_by_region = self.get_instance_ids_by_region(instances)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region, aws_access_key_id=config.aws_access_key_id, aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
logger.exception("[Pool %d] %s: laniakea failure: %s" % (pool.id, "terminate_pool_instances", msg))
return None
try:
if terminateByPool:
boto_instances = cluster.find(filters={"tag:SpotManager-PoolId" : str(pool.pk)})
# Data consistency checks
for boto_instance in boto_instances:
assert ((boto_instance.id in instance_ids_by_region[region])
or (boto_instance.state_code == INSTANCE_STATE['shutting-down']
or boto_instance.state_code == INSTANCE_STATE['terminated']))
cluster.terminate(boto_instances)
else:
logger.info("[Pool %d] Terminating %s instances in region %s" % (pool.id, len(instance_ids_by_region[region]),region))
cluster.terminate(cluster.find(instance_ids=instance_ids_by_region[region]))
except boto.exception.EC2ResponseError as msg:
logger.exception("[Pool %d] %s: boto failure: %s" % (pool.id, "terminate_pool_instances", msg))
return 1
def _terminate_pool_instances(pool, instances, config, terminateByPool=False):
""" Terminate an instance with the given configuration """
from .models import INSTANCE_STATE, PoolStatusEntry, POOL_STATUS_ENTRY_TYPE
instance_ids_by_region = _get_instance_ids_by_region(instances)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = POOL_STATUS_ENTRY_TYPE['unclassified']
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception(
"[Pool %d] terminate_pool_instances: laniakea failure: %s",
pool.id, msg)
return None
try:
if terminateByPool:
boto_instances = cluster.find(
filters={"tag:" + SPOTMGR_TAG + "-PoolId": str(pool.pk)})
# Data consistency checks
for boto_instance in boto_instances:
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
state_code = boto_instance.state_code & 255
if not (
(boto_instance.id in instance_ids_by_region[region]) or
(state_code == INSTANCE_STATE['shutting-down']
or state_code == INSTANCE_STATE['terminated'])):
logger.error(
"[Pool %d] Instance with EC2 ID %s (status %d) "
"is not in region list for region %s", pool.id,
boto_instance.id, state_code, region)
cluster.terminate(boto_instances)
else:
logger.info("[Pool %d] Terminating %s instances in region %s",
pool.id, len(instance_ids_by_region[region]),
region)
cluster.terminate(
cluster.find(instance_ids=instance_ids_by_region[region]))
except (boto.exception.EC2ResponseError,
boto.exception.BotoServerError, ssl.SSLError,
socket.error) as msg:
logger.exception(
"[Pool %d] terminate_pool_instances: boto failure: %s",
pool.id, msg)
return 1
def terminate_pool_instances(self,
pool,
instances,
config,
terminateByPool=False):
""" Terminate an instance with the given configuration """
instance_ids_by_region = self.get_instance_ids_by_region(instances)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(
region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = 0
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception("[Pool %d] %s: laniakea failure: %s" %
(pool.id, "terminate_pool_instances", msg))
return None
try:
if terminateByPool:
boto_instances = cluster.find(
filters={"tag:SpotManager-PoolId": str(pool.pk)})
# Data consistency checks
for boto_instance in boto_instances:
if not ((boto_instance.id
in instance_ids_by_region[region]) or
(boto_instance.state_code
== INSTANCE_STATE['shutting-down']
or boto_instance.state_code
== INSTANCE_STATE['terminated'])):
logger.error(
"[Pool %d] Instance with EC2 ID %s (status %d) is not in region list for region %s"
% (pool.id, boto_instance.id,
boto_instance.state_code, region))
cluster.terminate(boto_instances)
else:
logger.info(
"[Pool %d] Terminating %s instances in region %s" %
(pool.id, len(instance_ids_by_region[region]), region))
cluster.terminate(
cluster.find(
instance_ids=instance_ids_by_region[region]))
except boto.exception.EC2ResponseError as msg:
logger.exception("[Pool %d] %s: boto failure: %s" %
(pool.id, "terminate_pool_instances", msg))
return 1
def terminate_pool_instances(self,
pool,
instances,
config,
terminateByPool=False):
""" Terminate an instance with the given configuration """
instance_ids_by_region = self.get_instance_ids_by_region(instances)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(
region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
logger.exception("[Pool %d] %s: laniakea failure: %s" %
(pool.id, "terminate_pool_instances", msg))
return None
try:
if terminateByPool:
boto_instances = cluster.find(
filters={"tag:SpotManager-PoolId": str(pool.pk)})
# Data consistency checks
for boto_instance in boto_instances:
assert ((boto_instance.id
in instance_ids_by_region[region])
or (boto_instance.state_code
== INSTANCE_STATE['shutting-down']
or boto_instance.state_code
== INSTANCE_STATE['terminated']))
cluster.terminate(boto_instances)
else:
logger.info(
"[Pool %d] Terminating %s instances in region %s" %
(pool.id, len(instance_ids_by_region[region]), region))
cluster.terminate(
cluster.find(
instance_ids=instance_ids_by_region[region]))
except boto.exception.EC2ResponseError as msg:
logger.exception("[Pool %d] %s: boto failure: %s" %
(pool.id, "terminate_pool_instances", msg))
return 1
def terminate_pool_instances(self, pool, instances, config, terminateByPool=False):
""" Terminate an instance with the given configuration """
instance_ids_by_region = self.get_instance_ids_by_region(instances)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region, aws_access_key_id=config.aws_access_key_id, aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = 0
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception("[Pool %d] %s: laniakea failure: %s" % (pool.id, "terminate_pool_instances", msg))
return None
try:
if terminateByPool:
boto_instances = cluster.find(filters={"tag:SpotManager-PoolId" : str(pool.pk)})
# Data consistency checks
for boto_instance in boto_instances:
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
state_code = boto_instance.state_code & 255
if not ((boto_instance.id in instance_ids_by_region[region])
or (state_code == INSTANCE_STATE['shutting-down']
or state_code == INSTANCE_STATE['terminated'])):
logger.error("[Pool %d] Instance with EC2 ID %s (status %d) is not in region list for region %s" % (pool.id, boto_instance.id, state_code, region))
cluster.terminate(boto_instances)
else:
logger.info("[Pool %d] Terminating %s instances in region %s" % (pool.id, len(instance_ids_by_region[region]), region))
cluster.terminate(cluster.find(instance_ids=instance_ids_by_region[region]))
except (boto.exception.EC2ResponseError, boto.exception.BotoServerError, ssl.SSLError, socket.error) as msg:
logger.exception("[Pool %d] %s: boto failure: %s" % (pool.id, "terminate_pool_instances", msg))
return 1
def update_pool_instances(self, pool, config):
""" Check the state of the instances in a pool and update it in the database """
instances = Instance.objects.filter(pool=pool)
instance_ids_by_region = self.get_instance_ids_by_region(instances)
instances_by_ids = self.get_instances_by_ids(instances)
instances_left = []
debug_boto_instance_ids_seen = set()
debug_not_updatable_continue = set()
debug_not_in_region = {}
for instance_id in instances_by_ids:
if instance_id:
instances_left.append(instances_by_ids[instance_id])
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region, aws_access_key_id=config.aws_access_key_id, aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = 0
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception("[Pool %d] %s: laniakea failure: %s" % (pool.id, "update_pool_instances", msg))
return None
try:
boto_instances = cluster.find(filters={"tag:SpotManager-PoolId" : str(pool.pk)})
for boto_instance in boto_instances:
# Store ID seen for debugging purposes
debug_boto_instance_ids_seen.add(boto_instance.id)
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
state_code = boto_instance.state_code & 255
if "SpotManager-Updatable" not in boto_instance.tags or int(boto_instance.tags["SpotManager-Updatable"]) <= 0:
# The instance is not marked as updatable. We must not touch it because
# a spawning thread is still managing this instance. However, we must also
# remove this instance from the instances_left list if it's already in our
# database, because otherwise our code here would delete it from the database.
if boto_instance.id in instance_ids_by_region[region]:
instances_left.remove(instances_by_ids[boto_instance.id])
else:
debug_not_updatable_continue.add(boto_instance.id)
continue
instance = None
# Whenever we see an instance that is not in our instance list for that region,
# make sure it's a terminated instance because we should never have a running
# instance that matches the search above but is not in our database.
if not boto_instance.id in instance_ids_by_region[region]:
if not ((state_code == INSTANCE_STATE['shutting-down']
or state_code == INSTANCE_STATE['terminated'])):
# As a last resort, try to find the instance in our database.
# If the instance was saved to our database between the entrance
# to this function and the search query sent to EC2, then the instance
# will not be in our instances list but returned by EC2. In this
# case, we try to load it directly from the database.
q = Instance.objects.filter(ec2_instance_id=boto_instance.id)
if q:
instance = q[0]
logger.error("[Pool %d] Instance with EC2 ID %s was reloaded from database." % (pool.id, boto_instance.id))
else:
logger.error("[Pool %d] Instance with EC2 ID %s is not in our database." % (pool.id, boto_instance.id))
# Terminate at this point, we run in an inconsistent state
assert(False)
debug_not_in_region[boto_instance.id] = state_code
continue
instance = instances_by_ids[boto_instance.id]
instances_left.remove(instance)
# Check the status code and update if necessary
if instance.status_code != state_code:
instance.status_code = state_code
instance.save()
# If for some reason we don't have a hostname yet,
# update it accordingly.
if not instance.hostname:
instance.hostname = boto_instance.public_dns_name
instance.save()
except (boto.exception.EC2ResponseError, boto.exception.BotoServerError, ssl.SSLError, socket.error) as msg:
logger.exception("%s: boto failure: %s" % ("update_pool_instances", msg))
return 1
if instances_left:
for instance in instances_left:
if not instance.ec2_instance_id in debug_boto_instance_ids_seen:
logger.info("[Pool %d] Deleting instance with EC2 ID %s from our database, has no corresponding machine on EC2." % (pool.id, instance.ec2_instance_id))
if instance.ec2_instance_id in debug_not_updatable_continue:
logger.error("[Pool %d] Deleting instance with EC2 ID %s from our database because it is not updatable but not in our region." % (pool.id, instance.ec2_instance_id))
if instance.ec2_instance_id in debug_not_in_region:
logger.info("[Pool %d] Deleting instance with EC2 ID %s from our database, has state code %s on EC2" % (pool.id, instance.ec2_instance_id, debug_not_in_region[instance.ec2_instance_id]))
logger.info("[Pool %d] Deleting instance with EC2 ID %s from our database." % (pool.id, instance.ec2_instance_id))
instance.delete()
def update_pool_instances(self, pool, config):
""" Check the state of the instances in a pool and update it in the database """
instances = Instance.objects.filter(pool=pool)
instance_ids_by_region = self.get_instance_ids_by_region(instances)
instances_by_ids = self.get_instances_by_ids(instances)
instances_left = []
for instance_id in instances_by_ids:
if instance_id:
instances_left.append(instances_by_ids[instance_id])
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region, aws_access_key_id=config.aws_access_key_id, aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = 0
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception("[Pool %d] %s: laniakea failure: %s" % (pool.id, "update_pool_instances", msg))
return None
try:
boto_instances = cluster.find(filters={"tag:SpotManager-PoolId" : str(pool.pk), "tag:SpotManager-Updatable" : "1"})
for boto_instance in boto_instances:
instance = None
# Whenever we see an instance that is not in our instance list for that region,
# make sure it's a terminated instance because we should never have a running
# instance that matches the search above but is not in our database.
if not boto_instance.id in instance_ids_by_region[region]:
if not ((boto_instance.state_code == INSTANCE_STATE['shutting-down']
or boto_instance.state_code == INSTANCE_STATE['terminated'])):
# As a last resort, try to find the instance in our database.
# If the instance was saved to our database between the entrance
# to this function and the search query sent to EC2, then the instance
# will not be in our instances list but returned by EC2. In this
# case, we try to load it directly from the database.
q = Instance.objects.filter(ec2_instance_id = boto_instance.id)
if q:
instance = q[0]
else:
logger.error("[Pool %d] Instance with EC2 ID %s is not in our database." % (pool.id, boto_instance.id))
# Terminate at this point, we run in an inconsistent state
assert(False)
continue
if not instance:
instance = instances_by_ids[boto_instance.id]
instances_left.remove(instance)
# Check the status code and update if necessary
if instance.status_code != boto_instance.state_code:
instance.status_code = boto_instance.state_code
instance.save()
# If for some reason we don't have a hostname yet,
# update it accordingly.
if not instance.hostname:
instance.hostname = boto_instance.public_dns_name
instance.save()
except boto.exception.EC2ResponseError as msg:
logger.exception("%s: boto failure: %s" % ("update_pool_instances", msg))
return 1
if instances_left:
for instance in instances_left:
logger.info("[Pool %d] Deleting instance with EC2 ID %s from our database, has no corresponding machine on EC2." % (pool.id, instance.ec2_instance_id))
instance.delete()
def update_pool_instances(self, pool, config):
""" Check the state of the instances in a pool and update it in the database """
instances = Instance.objects.filter(pool=pool)
instance_ids_by_region = self.get_instance_ids_by_region(instances)
instances_by_ids = self.get_instances_by_ids(instances)
instances_left = []
debug_boto_instance_ids_seen = set()
debug_not_updatable_continue = set()
debug_not_in_region = {}
for instance_id in instances_by_ids:
if instance_id:
instances_left.append(instances_by_ids[instance_id])
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(
region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = 0
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception("[Pool %d] %s: laniakea failure: %s" %
(pool.id, "update_pool_instances", msg))
return None
try:
boto_instances = cluster.find(
filters={"tag:SpotManager-PoolId": str(pool.pk)})
for boto_instance in boto_instances:
# Store ID seen for debugging purposes
debug_boto_instance_ids_seen.add(boto_instance.id)
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
state_code = boto_instance.state_code & 255
if "SpotManager-Updatable" not in boto_instance.tags or int(
boto_instance.tags["SpotManager-Updatable"]) <= 0:
# The instance is not marked as updatable. We must not touch it because
# a spawning thread is still managing this instance. However, we must also
# remove this instance from the instances_left list if it's already in our
# database, because otherwise our code here would delete it from the database.
if boto_instance.id in instance_ids_by_region[region]:
instances_left.remove(
instances_by_ids[boto_instance.id])
else:
debug_not_updatable_continue.add(boto_instance.id)
continue
instance = None
# Whenever we see an instance that is not in our instance list for that region,
# make sure it's a terminated instance because we should never have a running
# instance that matches the search above but is not in our database.
if not boto_instance.id in instance_ids_by_region[region]:
if not (
(state_code == INSTANCE_STATE['shutting-down']
or state_code == INSTANCE_STATE['terminated'])):
# As a last resort, try to find the instance in our database.
# If the instance was saved to our database between the entrance
# to this function and the search query sent to EC2, then the instance
# will not be in our instances list but returned by EC2. In this
# case, we try to load it directly from the database.
q = Instance.objects.filter(
ec2_instance_id=boto_instance.id)
if q:
instance = q[0]
logger.error(
"[Pool %d] Instance with EC2 ID %s was reloaded from database."
% (pool.id, boto_instance.id))
else:
logger.error(
"[Pool %d] Instance with EC2 ID %s is not in our database."
% (pool.id, boto_instance.id))
# Terminate at this point, we run in an inconsistent state
assert (False)
debug_not_in_region[boto_instance.id] = state_code
continue
instance = instances_by_ids[boto_instance.id]
instances_left.remove(instance)
# Check the status code and update if necessary
if instance.status_code != state_code:
instance.status_code = state_code
instance.save()
# If for some reason we don't have a hostname yet,
# update it accordingly.
if not instance.hostname:
instance.hostname = boto_instance.public_dns_name
instance.save()
except (boto.exception.EC2ResponseError,
boto.exception.BotoServerError, ssl.SSLError,
socket.error) as msg:
logger.exception("%s: boto failure: %s" %
("update_pool_instances", msg))
return 1
if instances_left:
for instance in instances_left:
if not instance.ec2_instance_id in debug_boto_instance_ids_seen:
logger.info(
"[Pool %d] Deleting instance with EC2 ID %s from our database, has no corresponding machine on EC2."
% (pool.id, instance.ec2_instance_id))
if instance.ec2_instance_id in debug_not_updatable_continue:
logger.error(
"[Pool %d] Deleting instance with EC2 ID %s from our database because it is not updatable but not in our region."
% (pool.id, instance.ec2_instance_id))
if instance.ec2_instance_id in debug_not_in_region:
logger.info(
"[Pool %d] Deleting instance with EC2 ID %s from our database, has state code %s on EC2"
% (pool.id, instance.ec2_instance_id,
debug_not_in_region[instance.ec2_instance_id]))
logger.info(
"[Pool %d] Deleting instance with EC2 ID %s from our database."
% (pool.id, instance.ec2_instance_id))
instance.delete()
def _update_pool_instances(pool, config):
"""Check the state of the instances in a pool and update it in the database"""
from .models import Instance, INSTANCE_STATE, PoolStatusEntry, POOL_STATUS_ENTRY_TYPE
instances = Instance.objects.filter(pool=pool)
instance_ids_by_region = _get_instance_ids_by_region(instances)
instances_by_ids = _get_instances_by_ids(instances)
instances_left = []
instances_created = False
debug_boto_instance_ids_seen = set()
debug_not_updatable_continue = set()
debug_not_in_region = {}
for instance in instances_by_ids.values():
if instance.status_code != INSTANCE_STATE['requested']:
instances_left.append(instance)
# set config to this pool for now in case we set tags on fulfilled spot requests
config.ec2_tags[SPOTMGR_TAG + '-PoolId'] = str(pool.pk)
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
# Log this error to the pool status messages
entry = PoolStatusEntry()
entry.type = POOL_STATUS_ENTRY_TYPE['unclassified']
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.exception(
"[Pool %d] update_pool_instances: laniakea failure: %s",
pool.id, msg)
return
try:
# first check status of pending spot requests
requested = []
for instance_id in instance_ids_by_region[region]:
if instances_by_ids[instance_id].status_code == INSTANCE_STATE[
'requested']:
requested.append(instance_id)
if requested:
boto_results = cluster.check_spot_requests(
requested, config.ec2_tags)
for req_id, result in zip(requested, boto_results):
instance = instances_by_ids[req_id]
if isinstance(result, boto.ec2.instance.Instance):
logger.info(
"[Pool %d] spot request fulfilled %s -> %s",
pool.id, req_id, result.id)
# spot request has been fulfilled
instance.hostname = result.public_dns_name
instance.ec2_instance_id = result.id
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
instance.status_code = result.state_code & 255
instance.save()
# update local data structures to use the new instances instead
del instances_by_ids[req_id]
instances_by_ids[result.id] = instance
instance_ids_by_region[region].append(result.id)
# don't add it to instances_left yet to avoid race with adding tags
# Now that we saved the object into our database, mark the instance as updatable
# so our update code can pick it up and update it accordingly when it changes states
result.add_tag(SPOTMGR_TAG + "-Updatable", "1")
instances_created = True
# request object is returned in case request is closed/cancelled/failed
elif isinstance(
result,
boto.ec2.spotinstancerequest.SpotInstanceRequest):
if result.state in {"cancelled", "closed"}:
# this is normal, remove from DB and move on
logger.info("[Pool %d] spot request %s is %s",
pool.id, req_id, result.state)
instances_by_ids[req_id].delete()
elif result.state in {"open", "active"}:
# this should not happen! warn and leave in DB in case it's fulfilled later
logger.warning(
"[Pool %d] Request %s is %s and %s.", pool.id,
req_id, result.status.code, result.state)
else: # state=failed
msg = "Request %s is %s and %s." % (
req_id, result.status.code, result.state)
entry = PoolStatusEntry()
entry.type = POOL_STATUS_ENTRY_TYPE['unclassified']
entry.pool = pool
entry.msg = str(msg)
entry.isCritical = True
entry.save()
logger.error("[Pool %d] %s", pool.id, msg)
instances_by_ids[req_id].delete()
elif result is None:
logger.info("[Pool %d] spot request %s is still open",
pool.pk, req_id)
else:
logger.warning("[Pool %d] spot request %s returned %s",
pool.pk, req_id,
type(result).__name__)
boto_instances = cluster.find(
filters={"tag:" + SPOTMGR_TAG + "-PoolId": str(pool.pk)})
for boto_instance in boto_instances:
# Store ID seen for debugging purposes
debug_boto_instance_ids_seen.add(boto_instance.id)
# state_code is a 16-bit value where the high byte is
# an opaque internal value and should be ignored.
state_code = boto_instance.state_code & 255
if (SPOTMGR_TAG + "-Updatable" not in boto_instance.tags
or int(boto_instance.tags[SPOTMGR_TAG + "-Updatable"])
<= 0):
# The instance is not marked as updatable. We must not touch it because
# a spawning thread is still managing this instance. However, we must also
# remove this instance from the instances_left list if it's already in our
# database, because otherwise our code here would delete it from the database.
if boto_instance.id in instance_ids_by_region[region]:
instances_left.remove(
instances_by_ids[boto_instance.id])
else:
debug_not_updatable_continue.add(boto_instance.id)
continue
instance = None
# Whenever we see an instance that is not in our instance list for that region,
# make sure it's a terminated instance because we should never have a running
# instance that matches the search above but is not in our database.
if boto_instance.id not in instance_ids_by_region[region]:
if state_code not in [
INSTANCE_STATE['shutting-down'],
INSTANCE_STATE['terminated']
]:
# As a last resort, try to find the instance in our database.
# If the instance was saved to our database between the entrance
# to this function and the search query sent to EC2, then the instance
# will not be in our instances list but returned by EC2. In this
# case, we try to load it directly from the database.
q = Instance.objects.filter(
ec2_instance_id=boto_instance.id)
if q:
instance = q[0]
logger.error(
"[Pool %d] Instance with EC2 ID %s was reloaded from database.",
pool.id, boto_instance.id)
else:
logger.error(
"[Pool %d] Instance with EC2 ID %s is not in our database.",
pool.id, boto_instance.id)
# Terminate at this point, we run in an inconsistent state
assert (False)
debug_not_in_region[boto_instance.id] = state_code
continue
instance = instances_by_ids[boto_instance.id]
instances_left.remove(instance)
# Check the status code and update if necessary
if instance.status_code != state_code:
instance.status_code = state_code
instance.save()
# If for some reason we don't have a hostname yet,
# update it accordingly.
if not instance.hostname:
instance.hostname = boto_instance.public_dns_name
instance.save()
except (boto.exception.EC2ResponseError,
boto.exception.BotoServerError, ssl.SSLError,
socket.error) as msg:
if "MaxSpotInstanceCountExceeded" in str(msg):
logger.warning(
"[Pool %d] update_pool_instances: Maximum instance count exceeded for region %s",
pool.id, region)
if not PoolStatusEntry.objects.filter(
pool=pool,
type=POOL_STATUS_ENTRY_TYPE[
'max-spot-instance-count-exceeded']):
entry = PoolStatusEntry()
entry.pool = pool
entry.type = POOL_STATUS_ENTRY_TYPE[
'max-spot-instance-count-exceeded']
entry.msg = "Auto-selected region exceeded its maximum spot instance count."
entry.save()
elif "Service Unavailable" in str(msg):
logger.warning(
"[Pool %d] update_pool_instances: Temporary failure in region %s: %s",
pool.id, region, msg)
entry = PoolStatusEntry()
entry.pool = pool
entry.type = POOL_STATUS_ENTRY_TYPE['temporary-failure']
entry.msg = "Temporary failure occurred: %s" % msg
entry.save()
else:
logger.exception(
"[Pool %d] update_pool_instances: boto failure: %s",
pool.id, msg)
entry = PoolStatusEntry()
entry.type = POOL_STATUS_ENTRY_TYPE['unclassified']
entry.pool = pool
entry.isCritical = True
entry.msg = "Unclassified error occurred: %s" % msg
entry.save()
return
for instance in instances_left:
reasons = []
if instance.ec2_instance_id not in debug_boto_instance_ids_seen:
reasons.append("no corresponding machine on EC2")
if instance.ec2_instance_id in debug_not_updatable_continue:
reasons.append("not updatable")
if instance.ec2_instance_id in debug_not_in_region:
reasons.append("has state code %s on EC2 but not in our region" %
debug_not_in_region[instance.ec2_instance_id])
if not reasons:
reasons.append("?")
logger.info(
"[Pool %d] Deleting instance with EC2 ID %s from our database: %s",
pool.id, instance.ec2_instance_id, ", ".join(reasons))
instance.delete()
if instances_created:
# Delete certain warnings we might have created earlier that no longer apply
# If we ever exceeded the maximum spot instance count, we can clear
# the warning now because we obviously succeeded in starting some instances.
PoolStatusEntry.objects.filter(
pool=pool,
type=POOL_STATUS_ENTRY_TYPE['max-spot-instance-count-exceeded']
).delete()
# The same holds for temporary failures of any sort
PoolStatusEntry.objects.filter(
pool=pool,
type=POOL_STATUS_ENTRY_TYPE['temporary-failure']).delete()
def update_pool_instances(self, pool, config):
""" Check the state of the instances in a pool and update it in the database """
instances = Instance.objects.filter(pool=pool)
instance_ids_by_region = self.get_instance_ids_by_region(instances)
instances_by_ids = self.get_instances_by_ids(instances)
instances_left = []
for instance_id in instances_by_ids:
if instance_id:
instances_left.append(instances_by_ids[instance_id])
for region in instance_ids_by_region:
cluster = Laniakea(None)
try:
cluster.connect(
region=region,
aws_access_key_id=config.aws_access_key_id,
aws_secret_access_key=config.aws_secret_access_key)
except Exception as msg:
logger.exception("[Pool %d] %s: laniakea failure: %s" %
(pool.id, "update_pool_instances", msg))
return None
try:
boto_instances = cluster.find(
filters={
"tag:SpotManager-PoolId": str(pool.pk),
"tag:SpotManager-Updatable": "1"
})
for boto_instance in boto_instances:
instance = None
# Whenever we see an instance that is not in our instance list for that region,
# make sure it's a terminated instance because we should never have a running
# instance that matches the search above but is not in our database.
if not boto_instance.id in instance_ids_by_region[region]:
if not ((boto_instance.state_code
== INSTANCE_STATE['shutting-down']
or boto_instance.state_code
== INSTANCE_STATE['terminated'])):
# As a last resort, try to find the instance in our database.
# If the instance was saved to our database between the entrance
# to this function and the search query sent to EC2, then the instance
# will not be in our instances list but returned by EC2. In this
# case, we try to load it directly from the database.
q = Instance.objects.filter(
ec2_instance_id=boto_instance.id)
if q:
instance = q[0]
else:
logger.error(
"[Pool %d] Instance with EC2 ID %s is not in our database."
% (pool.id, boto_instance.id))
# Terminate at this point, we run in an inconsistent state
assert (False)
continue
if not instance:
instance = instances_by_ids[boto_instance.id]
instances_left.remove(instance)
# Check the status code and update if necessary
if instance.status_code != boto_instance.state_code:
instance.status_code = boto_instance.state_code
instance.save()
# If for some reason we don't have a hostname yet,
# update it accordingly.
if not instance.hostname:
instance.hostname = boto_instance.public_dns_name
instance.save()
except boto.exception.EC2ResponseError as msg:
logger.exception("%s: boto failure: %s" %
("update_pool_instances", msg))
return 1
if instances_left:
for instance in instances_left:
logger.info(
"[Pool %d] Deleting instance with EC2 ID %s from our database, has no corresponding machine on EC2."
% (pool.id, instance.ec2_instance_id))
instance.delete()