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View Code? Open in Web Editor NEWHPC clusters data guzzler for usage statistics and metrics
Home Page: http://edf-hpc.github.io/hpcstats/
License: GNU General Public License v2.0
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Retry several times on failed MySQL requests
HPCStats should try mysql requests several times, eventually restarting the connection, to avoid failing this way during long runs:
Traceback (most recent call last):
File "/usr/bin/hpcstats", line 39, in <module>
launcher.run()
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsLauncher.py", line 154, in run
self.app.run()
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsImporter.py", line 93, in run
self.import_cluster_data(db, cluster_name)
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsImporter.py", line 142, in import_cluster_data
self.jobs.load_update_window()
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 166, in load_update_window
batch_id = self.load_window(batch_id) + 1
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 181, in load_window
return self.get_jobs_after_batchid(batch_id, self.window_size)
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 222, in get_jobs_after_batchid
old_schema = self._is_old_schema()
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 198, in _is_old_schema
self.cur.execute(req)
File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
self.errorhandler(self, exc, value)
File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (2006, 'MySQL server has gone away')
or :
Traceback (most recent call last):
File "/usr/bin/hpcstats", line 39, in <module>
launcher.run()
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsLauncher.py", line 152, in run
self.app.run()
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsImporter.py", line 91, in run
self.import_cluster_data(db, cluster_name)
File "/usr/lib/python2.6/dist-packages/HPCStats/CLI/HPCStatsImporter.py", line 140, in import_cluster_data
self.jobs.load_update_window()
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 166, in load_update_window
batch_id = self.load_window(batch_id) + 1
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 181, in load_window
return self.get_jobs_after_batchid(batch_id, self.window_size)
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 222, in get_jobs_after_batchid
old_schema = self._is_old_schema()
File "/usr/lib/python2.6/dist-packages/HPCStats/Importer/Jobs/JobImporterSlurm.py", line 198, in _is_old_schema
self.cur.execute(req)
File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
self.errorhandler(self, exc, value)
File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (1213, 'Deadlock found when trying to get lock; try restarting transaction')
Handle missing private key in launcher
Example of backtrace:
Traceback (most recent call last):
File "/usr/share/hpcstats/bin/launch-jobstats", line 92, in <module>
main()
File "/usr/share/hpcstats/bin/launch-jobstats", line 89, in main
ssh_launch(user, frontend, privkey, script)
File "/usr/share/hpcstats/bin/launch-jobstats", line 70, in ssh_launch
ssh.connect(frontend, username=user, key_filename=privkey)
File "/usr/lib/pymodules/python2.6/paramiko/client.py", line 332, in connect
self._auth(username, password, pkey, key_filenames, allow_agent, look_for_keys)
File "/usr/lib/pymodules/python2.6/paramiko/client.py", line 436, in _auth
key = pkey_class.from_private_key_file(key_filename, password)
File "/usr/lib/pymodules/python2.6/paramiko/pkey.py", line 198, in from_private_key_file
key = cls(filename=filename, password=password)
File "/usr/lib/pymodules/python2.6/paramiko/rsakey.py", line 51, in __init__
self._from_private_key_file(filename, password)
File "/usr/lib/pymodules/python2.6/paramiko/rsakey.py", line 163, in _from_private_key_file
data = self._read_private_key_file('RSA', filename, password)
File "/usr/lib/pymodules/python2.6/paramiko/pkey.py", line 279, in _read_private_key_file
f = open(filename, 'r')
IOError: [Errno 2] No such file or directory: '/path/to/file'
SlurmDBD >= 15.08 schema changes
New SlurmDBD schema use multivalues TRES fields that replace several other fields, such as cpu_count in event tables. Many SQL requests accross JobImporterSlurm and EventImporterSlurm must be adapted to use these new fields when needed.
Increase event_type field to 200 chars
Currently, event_type field in DB is 50 chars long. It can be too short for some event type. It should be increased to 200 chars to avoid issues when importing events.
Fix unit tests following devs for slurmdbd 15.08 support
Some code has been developed to support SlurmDBD 15.08. This new code make 9 unit tests fail, and the new code is not covered by the tests. This must be fixed.
Avoid checking runs on new jobs
The Slurm job importer checks if runs exist even for new jobs, but this is useless since the DB model prevents runs from existing for new jobs. There might be a great optimization here by avoiding the check for new jobs.
Handle failed hostname resolution in the launcher
Example of backtrace:
File "/usr/share/hpcstats/bin/launch-jobstats", line 92, in <module>
main()
File "/usr/share/hpcstats/bin/launch-jobstats", line 89, in main
ssh_launch(user, frontend, privkey, script)
File "/usr/share/hpcstats/bin/launch-jobstats", line 70, in ssh_launch
ssh.connect(frontend, username=user, key_filename=privkey)
File "/usr/lib/pymodules/python2.6/paramiko/client.py", line 282, in connect
for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port, socket.AF_UNSPEC, socket.SOCK_STREAM):
socket.gaierror: [Errno -2] Name or service not known
ldap parameter TLS_CACERT ignored
HPCStats returns an error if "TLS_REQCERT ALLOW" is not set /etc/ldap/ldap.conf:
ERROR: HPCStatsLauncher: Source Error: unable to connect to LDAP server: {'info': '(unknown error code)', 'desc': "Can't contact LDAP server"}
Add mechanism to avoid simultaneous and concurrent import of same cluster
Currently, there is nothing to prevent multiple concurrent import runs on the same cluster. This systematically result on failed transaction. A mechanism might be added in HPCStats too avoid such concurrent runs.
Avoid full stop of importer app on first cluster fail
Currently, the importer app stops as soon as a source error is encountered. If a source error happens on a cluster, on the data from the other cluster (even if they work perfectly) are not imported. This behaviour should be avoided. The data must be imported for all working clusters and cluster encountering source error must simply be ignored.
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