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- > 连接数据库
-
- 普通连接数据库:
- ```
- ./influx -ssl -username influxuser
- -password user@influxDB -host ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com -port 3242
- ```
-
- 以json展示:
- ```
- ./influx -ssl -username influxuser -password user@influxDB -host ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com -port 3242 -format=json
- ```
-
- json以美观的方式展示
- ```
- ./influx -ssl -username influxuser -password user@influxDB -host ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com -port 3242 -format=json -pretty
- ```
-
- > 使用数据库
-
- ```
- use dingding_influx
- show measurements
- ```
-
- > 新建measurement
-
- ```
- 创建名称是cpu的measurement:
- INSERT cpu,host=serverA,region=us_west value=0.64
- select host, region, value from cpu
-
- 创建名称是temperature的measurement:
- INSERT temperature,machine=unit42,type=assembly external=25,internal=37
- select * from temperature
- ```
-
- > 删除measurement
-
- 删除measurement需要管理员权限
- ```
- drop measurement cpu
- ```
-
- > 通过Postman请求数据
-
- 请求
- ```
- POST https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/query?u=influxuser&p=user@influxDB
- Headers: Content-Type application/x-www-form-urlencoded
- Body:
- db=dingding_influx
- q=select host, region, value from cpu
- ```
-
- 请求成功返回
- ```
- {
- "results": [
- {
- "statement_id": 0,
- "series": [
- {
- "name": "cpu",
- "columns": [
- "time",
- "host",
- "region",
- "value"
- ],
- "values": [
- [
- "2019-07-26T08:58:21.438818256Z",
- "serverA",
- "us_west",
- 0.64
- ]
- ]
- }
- ]
- }
- ]
- }
- ```
-
- 如果请求没有的measurement返回
- ```
- {
- "results": [
- {
- "statement_id": 0
- }
- ]
- }
- ```
-
- 如果用户名错误、密码错误、用户名和密码同时错误返回
- ```
- {
- "error": "authorization failed"
- }
- ```
-
- 如果数据库错误
- ```
- {
- "error": "error authorizing query: influxuser not authorized to execute statement 'SELECT host, region, value FROM cpu', requires READ on dingding_influ"
- }
- ```
-
- 如果请求meaasurement中没有的字段,比如`select hos, region, value from cpu`返回
- ```
- {
- "results": [
- {
- "statement_id": 0,
- "series": [
- {
- "name": "cpu",
- "columns": [
- "time",
- "hos",
- "region",
- "value"
- ],
- "values": [
- [
- "2019-07-26T08:58:21.438818256Z",
- null,
- "us_west",
- 0.64
- ]
- ]
- }
- ]
- }
- ]
- }
- ```
-
- 如果q值为空返回
- ```
- {
- "error": "missing required parameter \"q\""
- }
- ```
-
- **时间戳格式**
-
- 默认数据的时间格式是UTC,编码是RFC3339, 例如`2015-08-04T19:05:14.318570484Z`, 如果想反悔Unix格式,使用`epoch`字段。
-
- ```
- epoch=h,m,s,ms,u,ns
- ```
-
- **分块Chunking**
-
- 默认分块的数量是10000个数据据点,如果想改变分块大小,通过`chunked`和`chunk_size`设置。
- ```
- chunked=true
- chunk_size=20000
- ```
-
-
- > Postman写入数据
-
- 内部是以二进制方式写入数据。阿里云时序数据库API默认的写入时间是在5秒之内,如果一次性写入过多的数据,写入时间超过5秒,就不保证所有数据都被写入。所以当数据点比较多,比如有5000个数据点,需要把数据拆分。
-
- 单点写入数据点
- ```
- POST https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/write?db=dingding_influx&u=influxuser&p=user@influxDB
- Body: cpu_load_short,host=server01,region=us-west value=0.64 1434055562000000000
- ```
-
- 返回类型是204(No Content)。
-
- 多点写入数据点(没有成功)
- ```
- POST https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/write?db=dingding_influx&u=influxuser&p=user@influxDB
- Body:
- cpu_load_short,host=server02,region=us-west value=0.55 1422568543702900257
- cpu_load_short,direction=in,host=server01,region=us-west value=2.0 1422568543702900257'
- ```
-
- > 故障排除
-
- 使用浏览器打开。
- ```
- 总览页:
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/pprof?u=influxuser&p=user@influxDB
-
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/pprof/goroutine?u=influxuser&p=user@influxDB
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/pprof/heap?u=influxuser&p=user@influxDB
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/pprof/mutex?u=influxuser&p=user@influxDB
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/pprof/threadcreate?u=influxuser&p=user@influxDB
- ```
-
-
- > 跟踪请求
-
- ```
- 默认跟踪10秒内的请求:
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/requests?u=influxuser&p=user@influxDB
-
- 跟踪1分钟内的请求:
- https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/debug/requests?seconds=60&u=influxuser&p=user@influxDB
- ```
-
- > 运行时的统计信息
-
- 使用/ping检查TSDB For InfluxDB®实例的状态和TSDB For InfluxDB®的版本。使用Postman请求。
- ```
- GET https://ts-uf60ncdtuve8d41w3.influxdata.rds.aliyuncs.com:3242/ping?u=influxuser&p=user@influxDB
- 返回204 在Headers里面有版本信息
- ```
-
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