On 5/13/14 09:33 , Adrian Banasiak wrote:
> Thanks for sugestion with admin daemon but it looks like single osd
> oriented. I have used perf dump on mon socket and it output some
> interesting data in case of monitoring whole cluster:
> { "cluster": { "num_mon": 4,
> "num_mon_quorum": 4,
> "num_osd": 29,
> "num_osd_up": 29,
> "num_osd_in": 29,
> "osd_epoch": 1872,
> "osd_kb": 20218112516,
> "osd_kb_used": 5022202696,
> "osd_kb_avail": 15195909820,
> "num_pool": 4,
> "num_pg": 3500,
> "num_pg_active_clean": 3500,
> "num_pg_active": 3500,
> "num_pg_peering": 0,
> "num_object": 400746,
> "num_object_degraded": 0,
> "num_object_unfound": 0,
> "num_bytes": 1678788329609,
> "num_mds_up": 0,
> "num_mds_in": 0,
> "num_mds_failed": 0,
> "mds_epoch": 1},
>
> Unfortunately cluster wide IO statistics are still missing.
>
I'm getting cluster wide OPs and Bandwidth from ceph pg stat -f json.
I'm using this section:
{
"pg_stats_delta": {
"stat_sum": {
"num_bytes": 0,
"num_objects": 31851793,
"num_object_clones": 0,
"num_object_copies": 100208267,
"num_objects_missing_on_primary": 0,
"num_objects_degraded": 4687903,
"num_objects_unfound": 0,
"num_read": 315072058,
"num_read_kb": 55549447422,
"num_write": 223701235,
"num_write_kb": 20457441876,
"num_scrub_errors": 0,
"num_shallow_scrub_errors": 0,
"num_deep_scrub_errors": 0,
"num_objects_recovered": 74138172,
"num_bytes_recovered": 62776621391330,
"num_keys_recovered": 1129447173},
"stat_cat_sum": {},
"log_size": 7191821,
"ondisk_log_size": 7191821},
I'm tracking num_write, num_write_kb, num_read, and num_read_kb.
Although I see some other things that I should be tracking too....
Those values appear to be counters, so you probably want to track the
change from the previous sample rather than the absolute value.
--
*Craig Lewis*
Senior Systems Engineer
Office +1.714.602.1309
Email clewis at centraldesktop.com <mailto:clewis at centraldesktop.com>
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