TDengine
TDengine 是一款高性能、分布式、支持 SQL 的时序数据库 (Database)。在开通采集器之前请先熟悉 TDengine 基本概念
TDengine 采集器需要的连接 taos_adapter 才可以正常工作，taosAdapter 从 TDengine v2.4.0.0 版本开始成为 TDengine 服务端软件 的一部分，本文主要是指标集的详细介绍。
配置¶
采集器配置¶
进入 DataKit 安装目录下的 conf.d/db 目录，复制 tdengine.conf.sample 并命名为 tdengine.conf。示例如下：
[[inputs.tdengine]]
## adapter restApi Addr, example: http://taosadapter.test.com (Required)
adapter_endpoint = "http://<FQND>:6041"
user = "<userName>"
password = "<pw>"
## log_files: TdEngine log file path or dirName (optional).
## log_files = ["tdengine_log_path.log"]
## pipeline = "tdengine.p"
## Set true to enable election
election = true
## add tag (optional)
[inputs.tdengine.tags]
## Different clusters can be distinguished by tag. Such as testing,product,local ,default is 'testing'
# cluster_name = "testing"
# some_tag = "some_value"
# more_tag = "some_other_value"
配置好后，重启 DataKit 即可。
目前可以通过 ConfigMap 方式注入采集器配置来开启采集器。
Info
- 连接 taoAdapter 之前请先确定端口是开放的。并且连接用户需要有 read 权限。
- 若仍连接失败，请参考此处。
指标¶
tdengine¶
- 标签
| Tag | Description |
|---|---|
| client_ip | Client IP |
| cluster_name | Cluster name |
| database_name | Database name |
| dnode_ep | Data node name, generally equivalent to end_point |
| end_point | Remote address name, the general naming rule is (host:port) |
| first_ep | First endpoint |
| host | Host name |
| version | Version |
| vgroup_id | VGroup ID |
- 指标列表
| Metric | Description |
|---|---|
| client_ip_count | Client IP request statistics Type: float Unit: count |
| cpu_cores | Total number of CPU cores per data node Type: float Unit: count |
| cpu_engine | CPU usage per data node Type: float Unit: percent,percent |
| cpu_percent | Adapter occupies CPU usage Type: float Unit: percent,percent |
| cpu_system | CPU system usage of data nodes Type: float Unit: count |
| database_count | Total number of databases Type: float Unit: count |
| disk_percent | Data node disk usage percentage Type: float Unit: percent,percent |
| disk_total | Total disk size of data nodes Type: float Unit: digital,GB |
| disk_used | Disk usage of data nodes Type: float Unit: digital,GB |
| dnodes_alive | Total number of dnodes in ready state Type: float Unit: count |
| dnodes_total | Total number of dnodes(data nodes) in cluster Type: float Unit: count |
| expire_time | Time until grants expire in seconds Type: int Unit: time,s |
| io_read_taosd | Average data size of IO reads per second Type: float Unit: digital,MB |
| io_write_taosd | Average data size of IO writes per second Type: float Unit: digital,MB |
| master_uptime | Seconds of master's uptime Type: float Unit: time,s |
| mem_engine | Memory usage of tdengine Type: float Unit: digital,MB |
| mem_engine_percent | taosd memory usage percentageType: float Unit: percent,percent |
| mem_percent | Adapter memory usage Type: float Unit: percent,percent |
| mem_system | Available memory on the server Type: float Unit: digital,MB |
| mem_total | Total memory of server Type: float Unit: digital,GB |
| mnodes_alive | Total number of mnodes in ready state Type: float Unit: count |
| mnodes_total | Total number of mnodes(management nodes) in cluster Type: float Unit: count |
| net_in | IO rate of the ingress network Type: float Unit: digital,KB |
| net_out | IO rate of egress network Type: float Unit: digital,KB |
| req_http | Total number of requests via HTTP Type: float Unit: count |
| req_http_rate | HTTP request rate Type: float Unit: count |
| req_insert_batch_rate | Number of batch insertions divided by monitor interval Type: float Unit: count |
| req_insert_rate | Number of insert queries received per dnode divided by monitor interval Type: float Unit: count |
| req_select | Number of select queries received per dnode Type: float Unit: count |
| req_select_rate | Number of select queries received per dnode divided by monitor interval Type: float Unit: count |
| request_in_flight | Number of requests being sorted Type: float Unit: count |
| status_code | Status code returned by the request Type: float Unit: count |
| table_count | Total number of tables in the database Type: float Unit: count |
| tables_count | Number of tables per vgroup Type: float Unit: count |
| timeseries_total | Total time series Type: float Unit: count |
| timeseries_used | Time series used Type: float Unit: count |
| total_req_count | Total adapter requests Type: float Unit: count |
| vgroups_alive | Total number of vgroups in ready state Type: float Unit: count |
| vgroups_total | Total number of vgroups in cluster Type: float Unit: count |
| vnodes | The number of virtual node groups contained in a single data node Type: float Unit: count |
| vnodes_alive | Total number of vnode in ready state Type: float Unit: count |
| vnodes_num | Total number of virtual nodes per data node Type: float Unit: count |
| vnodes_total | Total number of vnode in cluster Type: float Unit: count |
- 数据库中有些表中没有
ts字段，DataKit 会使用当前采集的时间。