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ceph-sls.py
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#!/usr/bin/env python
#
# ceph-sls.py
#
# Produce an XML file reporting the service level status of Ceph
#
# Author: Dan van der Ster ([email protected])
#
import argparse
import subprocess
import cephinfo
import socket
from datetime import datetime
CARBON_SERVER = 'filer-carbon.cern.ch'
CARBON_PORT = 2003
def get_status(pg_stats_sum, latency_ms):
health = subprocess.check_output(['timeout', '10', 'ceph', 'health'])
if health.startswith('HEALTH_ERR'):
return ('unavailable', health)
if health == 'HEALTH_OK':
return ('available', health)
if pg_stats_sum['num_objects'] > 1 and \
pg_stats_sum['num_objects_degraded'] / \
pg_stats_sum['num_objects'] > 0.01:
return ('degraded', health)
if latency_ms > 100:
return ('degraded', health)
return ('available', health)
def write_xml(slsid='Ceph'):
osd_states = cephinfo.get_osd_states()
osd_stats_sum = cephinfo.get_osd_stats_sum()
pg_stats_sum = cephinfo.get_pg_stats_sum()['stat_sum']
# pg_map = cephinfo.stat_data['pgmap']
try:
latency = cephinfo.get_write_latency()
read_latency = cephinfo.get_read_latency()
cephinfo.rados_cleanup(latency[0])
except IndexError:
latency = ['', [0, 0, 0]]
read_latency = [0, 0, 0]
pg_states = cephinfo.get_pg_states()
osd_df = cephinfo.osd_df_data['nodes']
activity = cephinfo.get_smooth_activity(10)
status, availabilityinfo = get_status(pg_stats_sum, latency[1][0]*1000)
context = {
"slsid": slsid,
"timestamp": datetime.strftime(datetime.now(), '%Y-%m-%dT%H:%M:%S'),
"status": status,
"availabilityinfo": availabilityinfo,
"n_mons": cephinfo.get_n_mons(),
"n_quorum": cephinfo.get_n_mons_quorum(),
"n_pools": cephinfo.get_n_pools(),
"n_osds": cephinfo.get_n_osds(),
"n_osds_up": osd_states['up'],
"n_osds_in": osd_states['in'],
"n_pgs": cephinfo.get_n_pgs(),
"n_osd_gb_total": osd_stats_sum['kb'] / 1024 / 1024,
"n_osd_gb_used": osd_stats_sum['kb_used'] / 1024 / 1024,
"n_osd_gb_avail": osd_stats_sum['kb_avail'] / 1024 / 1024,
"n_pg_gbytes": pg_stats_sum['num_bytes'] / 1024 / 1024 / 1024,
"n_objects": pg_stats_sum['num_objects'],
"n_object_copies": pg_stats_sum['num_object_copies'],
"n_objects_degraded": pg_stats_sum['num_objects_degraded'],
"n_objects_unfound": pg_stats_sum['num_objects_unfound'],
"n_objects_misplaced": pg_stats_sum['num_objects_misplaced'],
"n_read_gb": pg_stats_sum['num_read_kb'] / 1024 / 1024,
"n_write_gb": pg_stats_sum['num_write_kb'] / 1024 / 1024,
"latency_ms": latency[1][0]*1000,
"latency_max_ms": latency[1][1]*1000,
"latency_min_ms": latency[1][2]*1000,
"read_latency_ms": read_latency[0]*1000,
"read_latency_max_ms": read_latency[1]*1000,
"read_latency_min_ms": read_latency[2]*1000,
"n_openstack_volumes": cephinfo.get_n_openstack_volumes(),
"n_openstack_images": cephinfo.get_n_openstack_images(),
"op_per_sec": activity[0],
"read_mb_sec": activity[1],
"write_mb_sec": activity[2],
"graphite_prefix": slsid.replace('_', '.').lower() + '.sls',
"graphite_osd_prefix": slsid.replace('_', '.').lower() + '.osds',
"graphite_timestamp": int(datetime.time()),
}
for state in pg_states.keys():
context['n_pgs_%s' % state] = pg_states[state]
template = """
<?xml version="1.0" encoding="utf-8"?>
<serviceupdate xmlns="http://sls.cern.ch/SLS/XML/update">
<id>{slsid}</id>
<contact>[email protected]</contact>
<webpage>https://twiki.cern.ch/twiki/bin/viewauth/DSSGroup/CephProject</webpage>
<availabilitydesc>Status is available, degraded, or unavailable when the Ceph status is HEALTH_OK, HEALTH_WARN, or HEALTH_ERR, respectively.</availabilitydesc>
<timestamp>{timestamp}</timestamp>
<status>{status}</status>
<availabilityinfo>{availabilityinfo}</availabilityinfo>
<data>
<numericvalue name="n_mons" desc="Num Mons">{n_mons}</numericvalue>
<numericvalue name="n_quorum" desc="Num Mons in Quorum">{n_quorum}</numericvalue>
<numericvalue name="n_pools" desc="Num Pools">{n_pools}</numericvalue>
<numericvalue name="n_osds" desc="Num OSDs">{n_osds}</numericvalue>
<numericvalue name="n_osds_up" desc="Num OSDs Up">{n_osds_up}</numericvalue>
<numericvalue name="n_osds_in" desc="Num OSDs In">{n_osds_in}</numericvalue>
<numericvalue name="n_pgs" desc="Num PGs">{n_pgs}</numericvalue>
"""
for state in pg_states.keys():
template = template + ' <numericvalue name="n_pgs_%s" desc="Num PGs %s">{n_pgs_%s}</numericvalue>\n' % (state, state, state)
template = template + """ <numericvalue name="n_osd_gb_total" desc="OSD Gigabytes Total">{n_osd_gb_total}</numericvalue>
<numericvalue name="n_osd_gb_used" desc="OSD Gigabytes Used">{n_osd_gb_used}</numericvalue>
<numericvalue name="n_osd_gb_avail" desc="OSD Gigabytes Avail">{n_osd_gb_avail}</numericvalue>
<numericvalue name="n_pg_gbytes" desc="PG Gigabytes">{n_pg_gbytes}</numericvalue>
<numericvalue name="n_objects" desc="Num Objects">{n_objects}</numericvalue>
<numericvalue name="n_object_copies" desc="Num Object Copies">{n_object_copies}</numericvalue>
<numericvalue name="n_objects_degraded" desc="Num Objects Degraded">{n_objects_degraded}</numericvalue>
<numericvalue name="n_objects_unfound" desc="Num Objects Unfound">{n_objects_unfound}</numericvalue>
<numericvalue name="n_objects_misplaced" desc="Num Objects Misplaced">{n_objects_misplaced}</numericvalue>
<numericvalue name="n_read_gb" desc="Total Read (GB)">{n_read_gb}</numericvalue>
<numericvalue name="n_write_gb" desc="Total Write (GB)">{n_write_gb}</numericvalue>
<numericvalue name="latency_ms" desc="Average">{latency_ms}</numericvalue>
<numericvalue name="latency_max_ms" desc="Max">{latency_max_ms}</numericvalue>
<numericvalue name="latency_min_ms" desc="Min">{latency_min_ms}</numericvalue>
<numericvalue name="read_latency_ms" desc="Average">{read_latency_ms}</numericvalue>
<numericvalue name="read_latency_max_ms" desc="Max">{read_latency_max_ms}</numericvalue>
<numericvalue name="read_latency_min_ms" desc="Min">{read_latency_min_ms}</numericvalue>
<numericvalue name="n_openstack_volumes" desc="Num OpenStack Volumes">{n_openstack_volumes}</numericvalue>
<numericvalue name="n_openstack_images" desc="Num OpenStack Images">{n_openstack_images}</numericvalue>
<numericvalue name="read_mb_sec" desc="Read MB/s">{read_mb_sec}</numericvalue>
<numericvalue name="write_mb_sec" desc="Write MB/s">{write_mb_sec}</numericvalue>
<numericvalue name="op_per_sec" desc="Operations Per Second">{op_per_sec}</numericvalue>
</data>
</serviceupdate>
"""
print(template.format(**context))
# generate Graphite update
graphite = """
{graphite_prefix}.n_mons {n_mons} {graphite_timestamp}
{graphite_prefix}.n_quorum {n_quorum} {graphite_timestamp}
{graphite_prefix}.n_pools {n_pools} {graphite_timestamp}
{graphite_prefix}.n_osds {n_osds} {graphite_timestamp}
{graphite_prefix}.n_osds_up {n_osds_up} {graphite_timestamp}
{graphite_prefix}.n_osds_in {n_osds_in} {graphite_timestamp}
{graphite_prefix}.n_pgs {n_pgs} {graphite_timestamp}
"""
for state in pg_states.keys():
graphite = graphite + "{graphite_prefix}.n_pgs_%s {n_pgs_%s} {graphite_timestamp}\n" % (state, state)
graphite = graphite + """{graphite_prefix}.n_osd_gb_total {n_osd_gb_total} {graphite_timestamp}
{graphite_prefix}.n_osd_gb_used {n_osd_gb_used} {graphite_timestamp}
{graphite_prefix}.n_osd_gb_avail {n_osd_gb_avail} {graphite_timestamp}
{graphite_prefix}.n_pg_gbytes {n_pg_gbytes} {graphite_timestamp}
{graphite_prefix}.n_objects {n_objects} {graphite_timestamp}
{graphite_prefix}.n_object_copies {n_object_copies} {graphite_timestamp}
{graphite_prefix}.n_objects_degraded {n_objects_degraded} {graphite_timestamp}
{graphite_prefix}.n_objects_unfound {n_objects_unfound} {graphite_timestamp}
{graphite_prefix}.n_objects_misplaced {n_objects_misplaced} {graphite_timestamp}
{graphite_prefix}.n_read_gb {n_read_gb} {graphite_timestamp}
{graphite_prefix}.n_write_gb {n_write_gb} {graphite_timestamp}
{graphite_prefix}.latency_ms {latency_ms} {graphite_timestamp}
{graphite_prefix}.latency_max_ms {latency_max_ms} {graphite_timestamp}
{graphite_prefix}.latency_min_ms {latency_min_ms} {graphite_timestamp}
{graphite_prefix}.read_latency_ms {read_latency_ms} {graphite_timestamp}
{graphite_prefix}.read_latency_max_ms {read_latency_max_ms} {graphite_timestamp}
{graphite_prefix}.read_latency_min_ms {read_latency_min_ms} {graphite_timestamp}
{graphite_prefix}.n_openstack_volumes {n_openstack_volumes} {graphite_timestamp}
{graphite_prefix}.n_openstack_images {n_openstack_images} {graphite_timestamp}
{graphite_prefix}.read_mb_sec {read_mb_sec} {graphite_timestamp}
{graphite_prefix}.write_mb_sec {write_mb_sec} {graphite_timestamp}
{graphite_prefix}.op_per_sec {op_per_sec} {graphite_timestamp}
"""
for osd in osd_df:
graphite = graphite + "{graphite_osd_prefix}.%s.crush_weight %s {graphite_timestamp}\n" % (osd['id'], osd['crush_weight'])
graphite = graphite + "{graphite_osd_prefix}.%s.reweight %s {graphite_timestamp}\n" % (osd['id'], osd['reweight'])
graphite = graphite + "{graphite_osd_prefix}.%s.kb %s {graphite_timestamp}\n" % (osd['id'], osd['kb'])
graphite = graphite + "{graphite_osd_prefix}.%s.kb_used %s {graphite_timestamp}\n" % (osd['id'], osd['kb_used'])
graphite = graphite + "{graphite_osd_prefix}.%s.kb_avail %s {graphite_timestamp}\n" % (osd['id'], osd['kb_avail'])
graphite = graphite + "{graphite_osd_prefix}.%s.utilization %s {graphite_timestamp}\n" % (osd['id'], osd['utilization'])
graphite = graphite + "{graphite_osd_prefix}.%s.var %s {graphite_timestamp}\n" % (osd['id'], osd['var'])
update = graphite.format(**context)
sock = socket.socket()
sock.connect((CARBON_SERVER, CARBON_PORT))
sock.sendall(update)
sock.close()
parser = argparse.ArgumentParser(description="CERN Ceph SLS Probe")
parser.add_argument('-i', '--id', help='SLS ID, e.g. Ceph, Ceph_Preprod, Ceph_Wigner')
parsed_args, rest = parser.parse_known_args()
cephinfo.get_json()
write_xml(parsed_args.id)