diff --git a/CheckCeph/check_ceph.py b/CheckCeph/check_ceph.py index e69de29..8624abf 100644 --- a/CheckCeph/check_ceph.py +++ b/CheckCeph/check_ceph.py @@ -0,0 +1,257 @@ +#!/usr/bin/python2 + +# Examples: +# osd status, warn at 2 missing, crit at 3: ./check_ceph.py -C ceph.conf --id icinga -k ceph.client.icinga.keyring --osd -w 2 -c 3 +# general health statis: /check_ceph.py -C ceph.conf --id icinga -k ceph.client.icinga.keyring --health +# pg status, does not take warning or critical arguments yet. Only warns on PGs not in an active+clean state which means some PGs are not in an optimal state. ./check_ceph.py -C ceph.conf --id icinga -k ceph.client.icinga.keyring --pg +# extra performance metrics (iops, read/write bytes/sec): ./check_ceph.py -C ceph.conf --id icinga -k ceph.client.icinga.keyring --perf +# disk space, if run with --pool you only alert on that pool. when run without --pool the thresholds are for every pool. warning and ciritcal are the max avail fields from `ceph df`: ./check_ceph.py -C ceph.conf --id icinga -k ceph.client.icinga.keyring --df -w 100 -c 50 +# +# +import sys +import argparse +import json +import subprocess + +# ceph osd stat +# ceph mon stat +# ceph pg stat +# ceph health statua +# ceph mon_status +# ceph quorum status + + +def checkHealth(args): + + ceph_health_json = subprocess.check_output( + ["ceph --id {0} -c {1} -k {2} --format json health".format(args.id, args.conf, args.keyring)], shell=True) + ceph_health_dict = json.loads(ceph_health_json) + + if ceph_health_dict['status'] == 'HEALTH_ERR': + try: + print "%s: %s" % (ceph_health_dict['overall_status'], ceph_health_dict['summary'][0]['summary']) + except KeyError: + print "%s: %s" % (ceph_health_dict['status'], ceph_health_dict['checks'].keys()[0]) + sys.exit(2) + elif ceph_health_dict['status'] == 'HEALTH_WARN': + try: + print "%s: %s" % (ceph_health_dict['overall_status'], ceph_health_dict['summary'][0]['summary']) + except KeyError: + print "%s: %s" % (ceph_health_dict['status'], ceph_health_dict['checks'].keys()[0]) + sys.exit(1) + elif ceph_health_dict['status'] == 'HEALTH_OK': + print "%s" % (ceph_health_dict['status']) + sys.exit(0) + + +def checkOSD(args): + if args.warning: + WARN = float(args.warning) + if args.critical: + CRIT = float(args.critical) + osd_stat_json = subprocess.check_output( + ["ceph --id {0} -c {1} -k {2} --format json osd stat".format(args.id, args.conf, args.keyring)], shell=True) + osd_stat_dict = json.loads(osd_stat_json) + try: + osd_not_up = osd_stat_dict['num_osds'] - osd_stat_dict['num_up_osds'] + except KeyError: + osd_stat_dict = osd_stat_dict['osdmap'] + osd_not_up = osd_stat_dict['num_osds'] - osd_stat_dict['num_up_osds'] + + osd_not_in = osd_stat_dict['num_osds'] - osd_stat_dict['num_in_osds'] + perf_string = "num_osds={0} num_up_osds={1} num_in_osds={2}".format( + osd_stat_dict['num_osds'], osd_stat_dict['num_up_osds'], osd_stat_dict['num_in_osds']) + +# Build in logic to handle the full and near full keys that are returned in the json + if (osd_not_up >= WARN and osd_not_up < CRIT) or (osd_not_in >= WARN and osd_not_in < CRIT): + print "WARNING: ALL OSDs are not up and in. {0} OSDS. {1} up, {2} in|{3}".format(osd_stat_dict['num_osds'], osd_stat_dict['num_up_osds'], osd_stat_dict['num_in_osds'], perf_string) + sys.exit(1) + elif (osd_not_up >= CRIT) or (osd_not_in >= CRIT): + print "CRITICAL: ALL OSDs are not up and in. {0} OSDS. {1} up, {2} in|{3}".format(osd_stat_dict['num_osds'], osd_stat_dict['num_up_osds'], osd_stat_dict['num_in_osds'], perf_string) + sys.exit(2) + elif (osd_stat_dict['num_osds'] == osd_stat_dict['num_in_osds']) and (osd_stat_dict['num_osds'] == osd_stat_dict['num_up_osds']): + print "ALL OSDs are up and in. {0} OSDS. {1} up, {2} in|{3}".format(osd_stat_dict['num_osds'], osd_stat_dict['num_up_osds'], osd_stat_dict['num_in_osds'], perf_string) + sys.exit(0) + else: + print "Script shouldn't reach this point. Thar be bugs!" + sys.exit(3) + + +def checkMON(args): + if args.warning: + WARN = float(args.warning) + if args.critical: + CRIT = float(args.critical) + # not written yet, more important things + + +def checkPG(args): + pg_stat_json = subprocess.check_output( + ["ceph --id {0} -c {1} -k {2} --format json pg stat".format(args.id, args.conf, args.keyring)], shell=True) + pg_stat_dict = json.loads(pg_stat_json) + # cheap fix for nautilus change in json output + if 'num_pgs' in pg_stat_dict.keys(): + # pre nautilus json format + pg_summary = pg_stat_dict + elif 'pg_summary' in pg_stat_dict.keys(): + # nautilus json format + pg_summary = pg_stat_dict['pg_summary'] + num_pgs = pg_summary['num_pgs'] + active_pgs = 0 + perf_string = "" + for x in pg_summary['num_pg_by_state']: + if "active+clean" in x['name']: + active_pgs += x['num'] + perf_string += "%s=%s " % (x['name'], x['num']) +# Maybe build in a percentage based threshold for users who want to have thresholds like that + if active_pgs < num_pgs: + print "WARNING: All PGs are not active+clean: {0} PGs Total, {1}|{1}".format(num_pgs, perf_string) + sys.exit(1) + elif active_pgs == num_pgs: + print "All PGs are active+clean: {0} PGs Total, {1}|{1}".format(num_pgs, perf_string) + sys.exit(0) + else: + print "Script shouldn't reach this point. Thar be bugs!" + sys.exit(3) + + +def checkPerf(args): + pg_stat_json = subprocess.check_output( + ["ceph --id {0} -c {1} -k {2} --format json pg stat".format(args.id, args.conf, args.keyring)], shell=True) + pg_stat_dict = json.loads(pg_stat_json) + if 'read_bytes_sec' not in pg_stat_dict: + pg_stat_dict['read_bytes_sec'] = 0 + if 'write_bytes_sec' not in pg_stat_dict: + pg_stat_dict['write_bytes_sec'] = 0 + if 'io_sec' not in pg_stat_dict: + pg_stat_dict['io_sec'] = 0 + perf_string = "read_bytes_sec={0} write_bytes_sec={1} io_sec={2}".format( + pg_stat_dict['read_bytes_sec'], pg_stat_dict['write_bytes_sec'], pg_stat_dict['io_sec']) + print "Healthy: Additional perf stats for cluster {0}|{0}".format(perf_string) + sys.exit(0) + + +def checkDF(args): + if args.warning: + WARN = float(args.warning) + if args.critical: + CRIT = float(args.critical) + if args.byte: + if args.byte == "T": + byte_divisor = 1024**4 + perf_metric = "TB" + elif args.byte == "G": + byte_divisor = 1024**3 + perf_metric = "GB" + elif args.byte == "P": + byte_divisor = 1024**5 + perf_metric = "PB" + else: + byte_divisor = 1024**4 + perf_metric = "TB" + + ceph_df_json = subprocess.check_output( + ["ceph --id {0} -c {1} -k {2} --format json df".format(args.id, args.conf, args.keyring)], shell=True) + ceph_df_dict = json.loads(ceph_df_json) + # get global stats + global_bytes, global_used_bytes, global_avail_bytes = ceph_df_dict['stats'][ + 'total_bytes'], ceph_df_dict['stats']['total_used_bytes'], ceph_df_dict['stats']['total_avail_bytes'] + global_total = global_bytes/byte_divisor + global_used = global_used_bytes/byte_divisor + global_avail = global_avail_bytes/byte_divisor + + # get all pool stats + pool_stats = {} + for pool in ceph_df_dict['pools']: + pool_stats[pool['name']] = {'bytes_used': pool['stats']['bytes_used']/byte_divisor, + 'max_avail': pool['stats']['max_avail']/byte_divisor, 'objects': pool['stats']['objects']} + + perf_string = "global_total_bytes={0}{3} global_used_bytes={1}{3} global_avail_bytes={2}{3} ".format( + global_bytes/byte_divisor, global_used_bytes/byte_divisor, global_avail_bytes/byte_divisor, perf_metric) + for item in pool_stats.keys(): + perf_string += "{0}_bytes_used={1}{2} {0}_max_avail={3}{2} {0}_objects={4} ".format( + item, pool_stats[item]['bytes_used'], perf_metric, pool_stats[item]['max_avail'], pool_stats[item]['objects']) + +# if pool is defined alert on that. if pool is not defined alert on the max_avail of all pools if any cross threshold + if args.pool in pool_stats.keys(): + # print pool_stats[args.pool] + # add in percentage later + if (pool_stats[args.pool]['max_avail'] < WARN) and (pool_stats[args.pool]['max_avail'] > CRIT): + print "WARNING: Ceph pool {0} has {1}{2} availbale|{3}".format(args.pool, pool_stats[args.pool]['max_avail'], perf_metric, perf_string) + sys.exit(1) + elif pool_stats[args.pool]['max_avail'] < CRIT: + print "CRITICAL: Ceph pool {0} has {1}{2} availbale|{3}".format(args.pool, pool_stats[args.pool]['max_avail'], perf_metric, perf_string) + sys.exit(2) + elif pool_stats[args.pool]['max_avail'] > WARN: + print "Healthy: Ceph pool {0} has {1}{2} availbale|{3}".format(args.pool, pool_stats[args.pool]['max_avail'], perf_metric, perf_string) + sys.exit(0) + else: + print "Script shouldn't reach this point. Thar be bugs!" + sys.exit(3) + + else: + # Alerts based on all pools. If any pool is crossing the threshold we alert on it + warn_list = [] + crit_list = [] + + for key in pool_stats.keys(): + if (pool_stats[key]['max_avail'] < WARN) and (pool_stats[key]['max_avail'] > CRIT): + warn_list.append("%s:%s%s" % ( + key, pool_stats[key]['max_avail'], perf_metric)) + elif pool_stats[key]['max_avail'] < CRIT: + crit_list.append("%s:%s%s" % ( + key, pool_stats[key]['max_avail'], perf_metric)) + + if (len(warn_list) > 0) and (len(crit_list) == 0): + print "WARNING: Ceph pool(s) low on free space. {0}|{1}".format(warn_list, perf_string) + sys.exit(1) + elif len(crit_list) > 0: + print "CRITICAL: Ceph pool(s) critically low on free space. Critial:{0} Warning:{1}|{2}".format(crit_list, warn_list, perf_string) + sys.exit(2) + elif (len(warn_list) == 0) and (len(crit_list) == 0): + print "Healthy: All ceph pools are within free space thresholds|{0}".format(perf_string) + else: + print "Script shouldn't reach this point. Thar be bugs!" + sys.exit(3) + + +if __name__ == "__main__": + parser = argparse.ArgumentParser( + description='Runs health checks against a ceph cluster. This is designed to run on the monitoring server using the ceph client software. Supply a ceph.conf, keyring, and user to access the cluster.') + parser.add_argument( + '-C', '--conf', help='ceph.conf file, defaults to /etc/ceph/ceph.conf.') + parser.add_argument('-id', '--id', help='Ceph authx user', required=True) + parser.add_argument( + '-k', '--keyring', help='Path to ceph keyring if not in /etc/ceph/client.\$id.keyring') + parser.add_argument( + '--health', help='Get general health status. ex. HEALTH_OK, HEALTH_WARN', action="store_true") + parser.add_argument( + '-o', '--osd', help='OSD status. Thresholds are in number of OSDs missing', action="store_true") + parser.add_argument( + '-m', '--mon', help='MON status. Thesholds are in number of mons missing') + parser.add_argument( + '-p', '--pg', help='PG status. No thresholds due to the large number of pg states.', action="store_true") + parser.add_argument( + '--perf', help='collects additional ceph performance statistics', action='store_true') + parser.add_argument('--df', help='Disk/cluster usage. Reports global and all pools unless --pool is used. Warning and critical are number of -b free to the pools. This is not Raw Free, but Max Avail to the pools based on rep or k,m settings. If you do not define a pool the threshold is run agains all the pools in the cluster.', action="store_true") + parser.add_argument( + '-b', '--byte', help="Format to use for displaying DF data. G=Gigabyte, T=Terabyte. Use with the --df option. Defults to TB") + parser.add_argument('--pool', help='Pool. Use with df') + parser.add_argument('--objects', help='Object counts based on pool') + parser.add_argument( + '-w', '--warning', help='Warning threshold. See specific checks for value types') + parser.add_argument( + '-c', '--critical', help='Critical threshold. See specific checks for value types') + + args = parser.parse_args() + + if args.health: + checkHealth(args) + elif args.osd: + checkOSD(args) + elif args.pg: + checkPG(args) + elif args.df: + checkDF(args) + elif args.perf: + checkPerf(args)