class DrainStatusPoller(BaseWorkerThread):
"""
Collects information related to the agent drain status
"""
# class variable that contains drain statistics
drainStats = {}
def __init__(self, config):
"""
initialize properties specified from config
"""
BaseWorkerThread.__init__(self)
self.config = config
self.drainAPI = DrainStatusAPI()
@timeFunction
def algorithm(self, parameters):
"""
Update drainStats if agent is in drain mode
"""
if isDrainMode(self.config):
logging.info("Checking agent drain status...")
try:
DrainStatusPoller.drainStats = self.drainAPI.collectDrainInfo()
logging.info("Finished collecting agent drain status.")
logging.info("Drain stats: " + str(DrainStatusPoller.drainStats))
except Exception as ex:
msg = "Error occurred, will retry later:\n"
msg += str(ex)
logging.exception(msg)
else:
logging.info("Agent not in drain mode. Skipping drain check...")
@classmethod
def getDrainInfo(cls):
"""
Return drainStats class variable
"""
return cls.drainStats
class DrainStatusPoller(BaseWorkerThread):
"""
Collects information related to the agent drain status
"""
# class variable that contains drain statistics
drainStats = {}
def __init__(self, config):
"""
initialize properties specified from config
"""
BaseWorkerThread.__init__(self)
self.config = config
self.drainAPI = DrainStatusAPI()
def algorithm(self, parameters):
"""
Update drainStats if agent is in drain mode
"""
if isDrainMode(self.config):
logging.info("Checking agent drain status...")
try:
DrainStatusPoller.drainStats = self.drainAPI.collectDrainInfo()
logging.info("Finished collecting agent drain status.")
logging.info("Drain stats: " + str(DrainStatusPoller.drainStats))
except Exception as ex:
msg = "Error occurred, will retry later:\n"
msg += str(ex)
logging.exception(msg)
else:
logging.info("Agent not in drain mode. Skipping drain check...")
@classmethod
def getDrainInfo(cls):
"""
Return drainStats class variable
"""
return cls.drainStats
class DrainStatusPoller(BaseWorkerThread):
"""
Collects information related to the agent drain status
"""
# class variable that contains drain statistics
drainStats = {}
def __init__(self, config):
"""
initialize properties specified from config
"""
BaseWorkerThread.__init__(self)
self.config = config
self.drainAPI = DrainStatusAPI()
self.condorAPI = PyCondorAPI()
self.agentConfig = {}
self.validSpeedDrainConfigKeys = [
'CondorPriority', 'NoJobRetries', 'EnableAllSites'
]
self.reqAuxDB = ReqMgrAux(self.config.General.ReqMgr2ServiceURL)
@timeFunction
def algorithm(self, parameters):
"""
Update drainStats if agent is in drain mode
"""
logging.info("Running agent drain algorithm...")
self.agentConfig = self.reqAuxDB.getWMAgentConfig(
self.config.Agent.hostName)
if isDrainMode(self.config):
# check to see if the agent hit any speed drain thresholds
thresholdsHit = self.checkSpeedDrainThresholds()
if thresholdsHit:
logging.info("Updating agent configuration for speed drain...")
self.updateAgentSpeedDrainConfig(thresholdsHit)
try:
DrainStatusPoller.drainStats = self.drainAPI.collectDrainInfo()
logging.info("Finished collecting agent drain status.")
logging.info("Drain stats: " +
str(DrainStatusPoller.drainStats))
except Exception as ex:
msg = "Error occurred, will retry later:\n"
msg += str(ex)
logging.exception(msg)
else:
logging.info(
"Agent not in drain mode. Resetting flags and skipping drain check..."
)
self.resetAgentSpeedDrainConfig()
@classmethod
def getDrainInfo(cls):
"""
Return drainStats class variable
"""
return cls.drainStats
def updateAgentSpeedDrainConfig(self, thresholdsHit):
"""
Takes a list of speed drain configuration keys and updates the agent configuration
"""
updateConfig = False
condorPriorityFlag = False
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
if 'CondorPriority' in thresholdsHit:
logging.info(
"Bumping condor job priority to 999999 for Production/Processing pending jobs."
)
self.condorAPI.editCondorJobs(
"JobStatus=?=1 && (CMS_JobType =?= \"Production\" || CMS_JobType =?= \"Processing\")",
"JobPrio", "999999")
condorPriorityFlag = True
if condorPriorityFlag != speedDrainConfig['CondorPriority']['Enabled']:
# CondorPriority setting is irreversible so the flag only indicates weather
# priority is increased or not. It is not checked by other components
logging.info("Enabling CondorPriority flag.")
speedDrainConfig['CondorPriority']['Enabled'] = condorPriorityFlag
updateConfig = True
if 'NoJobRetries' in thresholdsHit:
logging.info(
"Enabling NoJobRetries flag: Error Handler won't retry the jobs"
)
# ErrorHandler will pick this up and set max retries to 0
speedDrainConfig['NoJobRetries']['Enabled'] = True
updateConfig = True
if 'EnableAllSites' in thresholdsHit:
logging.info(
"Enabling EnableAllSites flag: Updating agent to submit to all sites."
)
# setting this value to True makes JobSubmitterPoller ignore site status
speedDrainConfig['EnableAllSites']['Enabled'] = True
updateConfig = True
# update the aux db speed drain config with any changes
if updateConfig:
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName,
"SpeedDrainMode", True)
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName,
"SpeedDrainConfig",
speedDrainConfig)
return
def resetAgentSpeedDrainConfig(self):
"""
resetting SpeedDrainMode to False and SpeedDrainiConfig Enabled to False
"""
if self.agentConfig.get("SpeedDrainMode"):
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName,
"SpeedDrainMode", False)
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
for key, v in speedDrainConfig.items():
if key in self.validSpeedDrainConfigKeys and v['Enabled']:
speedDrainConfig[key]['Enabled'] = False
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName,
"SpeedDrainConfig",
speedDrainConfig)
return
def checkSpeedDrainThresholds(self):
"""
Check the current number of jobs in Condor and create a list of agent configuration parameters
that need updated for speed draining
"""
enableKeys = []
# get the current speed drain status
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
# get condor jobs
jobs = self.condorAPI.getCondorJobs("", [])
if jobs is None:
logging.warning(
"There was an error querying the schedd. Not checking speed drain thresholds."
)
return []
# loop through the speed drain configuration and make a list of what thresholds have been hit
for k, v in speedDrainConfig.items():
# make sure keys in the speed drain config are valid
if k in self.validSpeedDrainConfigKeys and isinstance(
v['Threshold'], int) and isinstance(v['Enabled'], bool):
# we always want to apply the condor priority change if the threshold is hit
if not v['Enabled'] or k == 'CondorPriority':
logging.info("Checking speed drain threshold for %s. ", k)
if len(jobs) < v['Threshold']:
logging.info(
"Agent will update speed drain configuration for %s. ",
k)
enableKeys.append(k)
else:
logging.warning(
"Speed drain configuration error for %s. Please check aux db contents.",
k)
return enableKeys
class DrainStatusPoller(BaseWorkerThread):
"""
Collects information related to the agent drain status
"""
# class variable that contains drain statistics
drainStats = {}
def __init__(self, config):
"""
initialize properties specified from config
"""
BaseWorkerThread.__init__(self)
self.config = config
self.drainAPI = DrainStatusAPI(config)
self.condorAPI = PyCondorAPI()
self.agentConfig = {}
self.previousConfig = {}
self.validSpeedDrainConfigKeys = [
'CondorPriority', 'NoJobRetries', 'EnableAllSites'
]
self.reqAuxDB = ReqMgrAux(self.config.General.ReqMgr2ServiceURL)
self.emailAlert = EmailAlert(config.EmailAlert.dictionary_())
self.condorStates = ("Running", "Idle")
@timeFunction
def algorithm(self, parameters):
"""
Update drainStats if agent is in drain mode
"""
logging.info("Running agent drain algorithm...")
if self.agentConfig:
# make a copy of the previous agent aux db configuration to compare against later
self.previousConfig = copy.deepcopy(self.agentConfig)
# grab a new copy of the agent aux db configuration
self.agentConfig = self.reqAuxDB.getWMAgentConfig(
self.config.Agent.hostName)
if not self.agentConfig:
logging.error(
"Failed to fetch agent configuration from the auxiliary DB")
return
try:
# see if the agent is in drain mode
if self.agentConfig["UserDrainMode"] or self.agentConfig[
"AgentDrainMode"]:
# check to see if the agent hit any speed drain thresholds
thresholdsHit = self.checkSpeedDrainThresholds()
if thresholdsHit:
logging.info(
"Updating agent configuration for speed drain...")
self.updateAgentSpeedDrainConfig(thresholdsHit)
# now collect drain statistics
DrainStatusPoller.drainStats = self.drainAPI.collectDrainInfo()
logging.info("Finished collecting agent drain status.")
logging.info("Drain stats: %s",
str(DrainStatusPoller.drainStats))
else:
logging.info(
"Agent not in drain mode. Resetting flags and skipping drain check..."
)
self.resetAgentSpeedDrainConfig()
# finally, check for any changes in drain status
self.checkDrainStatusChanges()
except Exception as ex:
msg = "Error occurred, will retry later:\n"
msg += str(ex)
logging.exception(msg)
@classmethod
def getDrainInfo(cls):
"""
Return drainStats class variable
"""
return cls.drainStats
def checkDrainStatusChanges(self):
"""
Check to see if any drain statuses have changed in the auxiliary db
If yes, send email notification and update local drain thread variables
"""
message = ""
drainStatusKeys = ['UserDrainMode', 'AgentDrainMode', 'SpeedDrainMode']
if not self.previousConfig:
return
for key in drainStatusKeys:
if self.previousConfig[key] != self.agentConfig[key]:
message += "Agent had a drain status transition to %s = %s\n" % (
str(key), str(self.agentConfig[key]))
if message:
self.emailAlert.send(
"DrainMode status change on " +
getattr(self.config.Agent, "hostName"), message)
logging.info("Drain mode status change: %s", message)
return
def updateAgentSpeedDrainConfig(self, thresholdsHit):
"""
Takes a list of speed drain configuration keys and updates the agent configuration
"""
updateConfig = False
condorPriorityFlag = False
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
if 'CondorPriority' in thresholdsHit:
logging.info(
"Bumping condor job priority to 999999 for Production/Processing pending jobs."
)
self.condorAPI.editCondorJobs(
"JobStatus=?=1 && (CMS_JobType =?= \"Production\" || CMS_JobType =?= \"Processing\")",
"JobPrio", "999999")
condorPriorityFlag = True
if condorPriorityFlag != speedDrainConfig['CondorPriority']['Enabled']:
# CondorPriority setting is irreversible so the flag only indicates weather
# priority is increased or not. It is not checked by other components
logging.info("Enabling CondorPriority flag.")
speedDrainConfig['CondorPriority']['Enabled'] = condorPriorityFlag
updateConfig = True
if 'NoJobRetries' in thresholdsHit:
logging.info(
"Enabling NoJobRetries flag: Error Handler won't retry the jobs"
)
# ErrorHandler will pick this up and set max retries to 0
speedDrainConfig['NoJobRetries']['Enabled'] = True
updateConfig = True
if 'EnableAllSites' in thresholdsHit:
logging.info(
"Enabling EnableAllSites flag: Updating agent to submit to all sites."
)
# setting this value to True makes JobSubmitterPoller ignore site status
speedDrainConfig['EnableAllSites']['Enabled'] = True
updateConfig = True
# update the aux db speed drain config with any changes
if updateConfig:
self.agentConfig['SpeedDrainMode'] = True
self.reqAuxDB.updateWMAgentConfig(self.config.Agent.hostName,
self.agentConfig)
return
def resetAgentSpeedDrainConfig(self):
"""
resetting SpeedDrainMode to False and SpeedDrainConfig Enabled to False
"""
if self.agentConfig.get("SpeedDrainMode"):
self.agentConfig['SpeedDrainMode'] = False
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
for key, v in viewitems(speedDrainConfig):
if key in self.validSpeedDrainConfigKeys and v['Enabled']:
speedDrainConfig[key]['Enabled'] = False
self.reqAuxDB.updateWMAgentConfig(self.config.Agent.hostName,
self.agentConfig)
return
def checkSpeedDrainThresholds(self):
"""
Check the current number of jobs in Condor and create a list of agent configuration parameters
that need updated for speed draining
"""
enableKeys = []
# first, update our summary of condor jobs
totalJobs = self.getTotalCondorJobs()
if totalJobs is None:
msg = "Cannot check speed drain because there was an error fetching job summary from HTCondor."
msg += " Will retry again in the next cycle."
logging.warning(msg)
return []
# get the current speed drain status
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
# loop through the speed drain configuration and make a list of what thresholds have been hit
for k, v in viewitems(speedDrainConfig):
# make sure keys in the speed drain config are valid
if k in self.validSpeedDrainConfigKeys and isinstance(
v['Threshold'], int) and isinstance(v['Enabled'], bool):
# we always want to apply the condor priority change if the threshold is hit
if not v['Enabled'] or k == 'CondorPriority':
logging.info("Checking speed drain threshold for %s. ", k)
if totalJobs < v['Threshold']:
logging.info(
"Agent will update speed drain configuration for %s. ",
k)
enableKeys.append(k)
else:
logging.warning(
"Speed drain configuration error for %s. Please check aux db contents.",
k)
return enableKeys
def getTotalCondorJobs(self):
"""
Retrieve a summary of the jobs in condor and return an absolute number
of the jobs in Idle and Running states.
:return: returns an integer with the total number of jobs, or None if it failed.
"""
jobs = self.condorAPI.getCondorJobsSummary()
if not jobs:
return None
results = 0
if jobs:
for state in self.condorStates:
results += int(jobs[0].get(state))
return results
class DrainStatusPoller(BaseWorkerThread):
"""
Collects information related to the agent drain status
"""
# class variable that contains drain statistics
drainStats = {}
def __init__(self, config):
"""
initialize properties specified from config
"""
BaseWorkerThread.__init__(self)
self.config = config
self.drainAPI = DrainStatusAPI(config)
self.condorAPI = PyCondorAPI()
self.agentConfig = {}
self.validSpeedDrainConfigKeys = ['CondorPriority', 'NoJobRetries', 'EnableAllSites']
self.reqAuxDB = ReqMgrAux(self.config.General.ReqMgr2ServiceURL)
@timeFunction
def algorithm(self, parameters):
"""
Update drainStats if agent is in drain mode
"""
logging.info("Running agent drain algorithm...")
self.agentConfig = self.reqAuxDB.getWMAgentConfig(self.config.Agent.hostName)
if not self.agentConfig:
logging.error("Failed to fetch agent configuration from the auxiliary DB")
return
if isDrainMode(self.config):
# check to see if the agent hit any speed drain thresholds
thresholdsHit = self.checkSpeedDrainThresholds()
if thresholdsHit:
logging.info("Updating agent configuration for speed drain...")
self.updateAgentSpeedDrainConfig(thresholdsHit)
# now collect drain statistics
try:
DrainStatusPoller.drainStats = self.drainAPI.collectDrainInfo()
logging.info("Finished collecting agent drain status.")
logging.info("Drain stats: " + str(DrainStatusPoller.drainStats))
except Exception as ex:
msg = "Error occurred, will retry later:\n"
msg += str(ex)
logging.exception(msg)
else:
logging.info("Agent not in drain mode. Resetting flags and skipping drain check...")
self.resetAgentSpeedDrainConfig()
@classmethod
def getDrainInfo(cls):
"""
Return drainStats class variable
"""
return cls.drainStats
def updateAgentSpeedDrainConfig(self, thresholdsHit):
"""
Takes a list of speed drain configuration keys and updates the agent configuration
"""
updateConfig = False
condorPriorityFlag = False
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
if 'CondorPriority' in thresholdsHit:
logging.info("Bumping condor job priority to 999999 for Production/Processing pending jobs.")
self.condorAPI.editCondorJobs(
"JobStatus=?=1 && (CMS_JobType =?= \"Production\" || CMS_JobType =?= \"Processing\")",
"JobPrio", "999999")
condorPriorityFlag = True
if condorPriorityFlag != speedDrainConfig['CondorPriority']['Enabled']:
# CondorPriority setting is irreversible so the flag only indicates weather
# priority is increased or not. It is not checked by other components
logging.info("Enabling CondorPriority flag.")
speedDrainConfig['CondorPriority']['Enabled'] = condorPriorityFlag
updateConfig = True
if 'NoJobRetries' in thresholdsHit:
logging.info("Enabling NoJobRetries flag: Error Handler won't retry the jobs")
# ErrorHandler will pick this up and set max retries to 0
speedDrainConfig['NoJobRetries']['Enabled'] = True
updateConfig = True
if 'EnableAllSites' in thresholdsHit:
logging.info("Enabling EnableAllSites flag: Updating agent to submit to all sites.")
# setting this value to True makes JobSubmitterPoller ignore site status
speedDrainConfig['EnableAllSites']['Enabled'] = True
updateConfig = True
# update the aux db speed drain config with any changes
if updateConfig:
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName, "SpeedDrainMode", True)
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName, "SpeedDrainConfig", speedDrainConfig)
return
def resetAgentSpeedDrainConfig(self):
"""
resetting SpeedDrainMode to False and SpeedDrainiConfig Enabled to False
"""
if self.agentConfig.get("SpeedDrainMode"):
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName, "SpeedDrainMode", False)
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
for key, v in speedDrainConfig.items():
if key in self.validSpeedDrainConfigKeys and v['Enabled']:
speedDrainConfig[key]['Enabled'] = False
self.reqAuxDB.updateAgentConfig(self.config.Agent.hostName, "SpeedDrainConfig", speedDrainConfig)
return
def checkSpeedDrainThresholds(self):
"""
Check the current number of jobs in Condor and create a list of agent configuration parameters
that need updated for speed draining
"""
enableKeys = []
# get the current speed drain status
speedDrainConfig = self.agentConfig.get("SpeedDrainConfig")
# get condor jobs
jobs = self.condorAPI.getCondorJobs("", [])
if jobs is None:
logging.warning("There was an error querying the schedd. Not checking speed drain thresholds.")
return []
# loop through the speed drain configuration and make a list of what thresholds have been hit
for k, v in speedDrainConfig.items():
# make sure keys in the speed drain config are valid
if k in self.validSpeedDrainConfigKeys and isinstance(v['Threshold'], int) and isinstance(v['Enabled'], bool):
# we always want to apply the condor priority change if the threshold is hit
if not v['Enabled'] or k == 'CondorPriority':
logging.info("Checking speed drain threshold for %s. ", k)
if len(jobs) < v['Threshold']:
logging.info("Agent will update speed drain configuration for %s. ", k)
enableKeys.append(k)
else:
logging.warning("Speed drain configuration error for %s. Please check aux db contents.", k)
return enableKeys