exporter-metrics.md

# 输出插件（Exporter）指标

输出插件（Exporter）暴露的指标见下表：

## 主机指标

| **指标名** | **Label** | **描述** | **类型** |
| --- | --- | --- | --- |
| node_cpu_seconds_total | cpu,mode,svr_ip | CPU 时间 | counter |
| node_disk_read_bytes_total | device,svr_ip | 磁盘读取字节数 | counter |
| node_disk_read_time_seconds_total | device,svr_ip | 磁盘读取消耗总时间 | counter |
| node_disk_reads_completed_total | device,svr_ip | 磁盘读取完成次数 | counter |
| node_disk_written_bytes_total | device,svr_ip | 磁盘写入字节数 | counter |
| node_disk_write_time_seconds_total | device,svr_ip | 磁盘写入消耗总时间 | counter |
| node_disk_writes_completed_total | device,svr_ip | 磁盘写入完成次数 | counter |
| node_filesystem_avail_bytes | device,fstype,mountpoint,svr_ip | 文件系统可用大小 | gauge |
| node_filesystem_readonly | device,fstype,mountpoint,svr_ip | 文件系统是否只读 | gauge |
| node_filesystem_size_bytes | device,fstype,mountpoint,svr_ip | 文件系统大小 | gauge |
| node_load1 | svr_ip | 1 分钟平均 load | gauge |
| node_load5 | svr_ip | 5 分钟平均 load | gauge |
| node_load15 | svr_ip | 15 分钟平均 load | gauge |
| node_memory_Buffers_bytes | svr_ip | 内存 buffer 大小 | gauge |
| node_memory_Cached_bytes | svr_ip | 内存 cache 大小 | gauge |
| node_memory_MemFree_bytes | svr_ip | 内存 free 大小 | gauge |
| node_memory_MemTotal_bytes | svr_ip | 内存总大小 | gauge |
| node_network_receive_bytes_total | device,svr_ip | 网络接受总字节数 | counter |
| node_network_transmit_bytes_total | device,svr_ip | 网络发送总字节数 | counter |
| node_ntp_offset_seconds | svr_ip | NTP 时钟偏移 | gauge |

## OceanBase 数据库指标

| **指标名** | **label** | **含义** | **类型** |
| --- | --- | --- | --- |
| ob_active_session_num | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 活跃连接数 | gauge |
| ob_cache_size_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name,cache_name | kvcache 大小 | gauge |
| ob_partition_num | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 分区数 | gauge |
| ob_plan_cache_access_total | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 执行计划访问次数 | counter |
| ob_plan_cache_hit_total | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 执行计划命中次数 | counter |
| ob_plan_cache_memory_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | plancache大小 | gauge |
| ob_table_num | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 表数量 | gauge |
| ob_waitevent_wait_seconds_total | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 等待事件总等待时间 | counter |
| ob_waitevent_wait_total | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 等待事件总等待次数 | counter |
| ob_disk_free_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip | OceanBase 磁盘剩余大小 | gauge |
| ob_disk_total_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip | OceanBase 磁盘总大小 | gauge |
| ob_memstore_active_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | 活跃 memstore 大小 | gauge |
| ob_memstore_freeze_times | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | memstore 冻结次数 | counter |
| ob_memstore_freeze_trigger_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | memstore 冻结阈值 | gauge |
| ob_memstore_total_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name | memstore 总大小 | gauge |
| ob_server_resource_cpu | ob_cluster_id,ob_cluster_name,obzone,svr_ip | observer可用cpu数 | gauge |
| ob_server_resource_cpu_assigned | ob_cluster_id,ob_cluster_name,obzone,svr_ip | observer 已分配 CPU 数 | gauge |
| ob_server_resource_memory_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip | observer 可用内存大小 | gauge |
| ob_server_resource_memory_assigned_bytes | ob_cluster_id,ob_cluster_name,obzone,svr_ip | observer 已分配内存大小 | gauge |
| ob_unit_num | ob_cluster_id,ob_cluster_name,obzone,svr_ip | observer unit 数量 | gauge |
| ob_sysstat | ob_cluster_id,ob_cluster_name,obzone,svr_ip,tenant_name,stat_id | ob内部统计项 | 不同 stat_id 不相同，参考对应部分解释 |