时序列数据库之InfluxDB

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技术分享图片

作为时序列数据库中表现很好的InfluxDB，已经被越来越多的项目应用到实际当中。比如资源的监控来说，Cadvisor监控到某一断面某一节点整体资源的状况，而且能够不断地从画面中看到不断变化的信息，但是这些数据如何持久化的保存是一个问题，而InfluxDB正好可以满足这个需求，其简单好用，耦合度小，容易集成到整体的系统之中。

Docker pull

[[email protected] ~]# docker pull docker.io/influxdb

Docker run

使用这种方式便于观察InfluxDB的HTTP API如何具体执行，并且可以看到更加详细的一些信息。
docker run -p 8083:8083 -p 8086:8086 influxdb

[[email protected] ~]# docker run -p 8083:8083 -p 8086:8086 influxdb

 8888888           .d888 888                   8888888b.  888888b.
   888            d88P"  888                   888  "Y88b 888  "88b
   888            888    888                   888    888 888  .88P
   888   88888b.  888888 888 888  888 888  888 888    888 8888888K.
   888   888 "88b 888    888 888  888  Y8bd8P‘ 888    888 888  "Y88b
   888   888  888 888    888 888  888   X88K   888    888 888    888
   888   888  888 888    888 Y88b 888 .d8""8b. 888  .d88P 888   d88P
 8888888 888  888 888    888  "Y88888 888  888 8888888P"  8888888P"

[run] 2016/08/02 22:19:47 InfluxDB starting, version 0.13.0, branch 0.13, commit e57fb88a051ee40fd9277094345fbd47bb4783ce
[run] 2016/08/02 22:19:47 Go version go1.6.2, GOMAXPROCS set to 1
[run] 2016/08/02 22:19:47 Using configuration at: /etc/influxdb/influxdb.conf
[store] 2016/08/02 22:19:47 Using data dir: /var/lib/influxdb/data
[subscriber] 2016/08/02 22:19:47 opened service
[monitor] 2016/08/02 22:19:47 Starting monitor system
[monitor] 2016/08/02 22:19:47 ‘build‘ registered for diagnostics monitoring
[monitor] 2016/08/02 22:19:47 ‘runtime‘ registered for diagnostics monitoring
[monitor] 2016/08/02 22:19:47 ‘network‘ registered for diagnostics monitoring
[monitor] 2016/08/02 22:19:47 ‘system‘ registered for diagnostics monitoring
[cluster] 2016/08/02 22:19:47 Starting cluster service
[shard-precreation] 2016/08/02 22:19:47 Starting precreation service with check interval of 10m0s, advance period of 30m0s
[snapshot] 2016/08/02 22:19:47 Starting snapshot service
[copier] 2016/08/02 22:19:47 Starting copier service
[admin] 2016/08/02 22:19:47 Starting admin service
[admin] 2016/08/02 22:19:47 Listening on HTTP: [::]:8083
[continuous_querier] 2016/08/02 22:19:47 Starting continuous query service
[httpd] 2016/08/02 22:19:47 Starting HTTP service
[httpd] 2016/08/02 22:19:47 Authentication enabled: false
[httpd] 2016/08/02 22:19:47 Listening on HTTP: [::]:8086
[retention] 2016/08/02 22:19:47 Starting retention policy enforcement service with check interval of 30m0s
[run] 2016/08/02 22:19:47 Listening for signals
[monitor] 2016/08/02 22:19:47 Storing statistics in database ‘_internal‘ retention policy ‘monitor‘, at interval 10s
2016/08/02 22:19:47 Sending anonymous usage statistics to m.influxdb.com
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画面确认

技术分享图片

Influxdb的HTTP API

创建DB

[root@host31 ~]# curl -i -XPOST http://192.168.32.31:8086/query --data-urlencode "q=CREATE DATABASE mydb"
HTTP/1.1 200 OK
Connection: close
Content-Type: application/json
Request-Id: 42a1f30c-5900-11e6-8003-000000000000
X-Influxdb-Version: 0.13.0
Date: Tue, 02 Aug 2016 22:27:13 GMT
Content-Length: 16

{"results":[{}]}[root@host31 ~]#
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写入数据

[root@host31 ~]# curl -i -XPOST ‘http://192.168.32.31:8086/write?db=mydb‘ --data-binary ‘cpu_load_short,host=server01,region=us-west value=0.64 1434055562000000000‘
HTTP/1.1 204 No Content
Request-Id: c2fdbba7-5900-11e6-8006-000000000000
X-Influxdb-Version: 0.13.0
Date: Tue, 02 Aug 2016 22:30:48 GMT

[root@host31 ~]#
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查询写入的数据

[[email protected] ~]# curl -GET ‘http://192.168.32.31:8086/query?pretty=true‘ --data-urlencode "db=mydb" --data-urlencode "q=SELECT "value" FROM "cpu_load_short" WHERE "region"=‘us-west‘"
{
    "results": [
        {
            "series": [
                {
                    "name": "cpu_load_short",
                    "columns": [
                        "time",
                        "value"
                    ],
                    "values": [
                        [
                            "2015-06-11T20:46:02Z",
                            0.64
                        ]
                    ]
                }
            ]
        }
    ]
}[[email protected] ~]#
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