2.13. Ceph 메타데이터 서버 클라이언트에 대한 메트릭 보기

프로세스

1. mds 서비스의 이름을 가져옵니다.

   구문

   [ceph: root@mds-host01 /]# ceph orch ps | grep mds

2. 클라이언트 메트릭당 MDS를 확인합니다.

   구문

   [ceph: root@mds-host01 /]# ceph tell MDS_SERVICE_NAME counter dump

   예제

   [root@ceph2-hk-n-0mfqao-node1-installer ~]# ceph tell mds.cephfs.ceph2-hk-n-0mfqao-node4.isztbk counter dump
   
   [
     {
       "key": "mds_client_metrics",
       "value": [
         {
           "labels": {
             "fs_name": "cephfs",
             "id": "24379"
           },
           "counters": {
             "num_clients": 4
           }
         }
       ]
     },
     {
       "key": "mds_client_metrics-cephfs",
       "value": [
         {
           "labels": {
             "client": "client.24413",
             "rank": "0"
           },
           "counters": {
             "cap_hits": 56,
             "cap_miss": 9,
             "avg_read_latency": 0E-9,
             "avg_write_latency": 0E-9,
             "avg_metadata_latency": 0E-9,
             "dentry_lease_hits": 2,
             "dentry_lease_miss": 12,
             "opened_files": 0,
             "opened_inodes": 9,
             "pinned_icaps": 4,
             "total_inodes": 9,
             "total_read_ops": 0,
             "total_read_size": 0,
             "total_write_ops": 0,
             "total_write_size": 0
           }
         },
         {
           "labels": {
             "client": "client.24502",
             "rank": "0"
           },
           "counters": {
             "cap_hits": 921403,
             "cap_miss": 102382,
             "avg_read_latency": 0E-9,
             "avg_write_latency": 0E-9,
             "avg_metadata_latency": 0E-9,
             "dentry_lease_hits": 17117,
             "dentry_lease_miss": 204710,
             "opened_files": 0,
             "opened_inodes": 9,
             "pinned_icaps": 7,
             "total_inodes": 9,
             "total_read_ops": 0,
             "total_read_size": 0,
             "total_write_ops": 1,
             "total_write_size": 132
           }
         },
         {
           "labels": {
             "client": "client.24508",
             "rank": "0"
           },
           "counters": {
             "cap_hits": 928694,
             "cap_miss": 103183,
             "avg_read_latency": 0E-9,
             "avg_write_latency": 0E-9,
             "avg_metadata_latency": 0E-9,
             "dentry_lease_hits": 17217,
             "dentry_lease_miss": 206348,
             "opened_files": 0,
             "opened_inodes": 9,
             "pinned_icaps": 7,
             "total_inodes": 9,
             "total_read_ops": 0,
             "total_read_size": 0,
             "total_write_ops": 1,
             "total_write_size": 132
           }
         },
         {
           "labels": {
             "client": "client.24520",
             "rank": "0"
           },
           "counters": {
             "cap_hits": 56,
             "cap_miss": 9,
             "avg_read_latency": 0E-9,
             "avg_write_latency": 0E-9,
             "avg_metadata_latency": 0E-9,
             "dentry_lease_hits": 2,
             "dentry_lease_miss": 12,
             "opened_files": 0,
             "opened_inodes": 9,
             "pinned_icaps": 4,
             "total_inodes": 9,
             "total_read_ops": 0,
             "total_read_size": 0,
             "total_write_ops": 0,
             "total_write_size": 0
           }
         }
       ]
     }
   ]