docs: add section how to verify prometheus/taosadapter works (#11668)

[TD-14920]

docs-cn/09-third-party/02-prometheus.md

@@ -4,7 +4,6 @@ title: Prometheus
 ---
 
 import Prometheus from "../14-reference/_prometheus.mdx"
-import DeployTaosAdapter from "./_deploytaosadapter.mdx"
 
 Prometheus 是一款流行的开源监控告警系统。Prometheus 于2016年加入了 Cloud Native Computing Foundation （云原生云计算基金会，简称 CNCF），成为继 Kubernetes 之后的第二个托管项目，该项目拥有非常活跃的开发人员和用户社区。
 
@@ -29,6 +28,65 @@ Prometheus 提供了 `remote_write` 和 `remote_read` 接口来利用其它数
 
 重启 Prometheus 后可参考以下示例验证从 Prometheus 向 TDengine 写入数据并能够正确读出。
 
+### 使用 TDengine CLI 查询写入数据
 ```
-这里需要给出 Prometheus 端 写入和查询 TDengine的示例
+taos> show databases;
+              name              |      created_time       |   ntables   |   vgroups   | replica | quorum |  days  |           keep           |  cache(MB)  |   blocks    |   minrows   |   maxrows   | wallevel |    fsync    | comp | cachelast | precision | update |   status   |
+====================================================================================================================================================================================================================================================================================
+ test                           | 2022-04-12 08:07:58.756 |           1 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ms        |      0 | ready      |
+ log                            | 2022-04-20 07:19:50.260 |           2 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ms        |      0 | ready      |
+ prometheus_data                | 2022-04-20 07:21:09.202 |         158 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ns        |      2 | ready      |
+ db                             | 2022-04-15 06:37:08.512 |           1 |           1 |       1 |      1 |     10 | 3650                     |          16 |           6 |         100 |        4096 |        1 |        3000 |    2 |         0 | ms        |      0 | ready      |
+Query OK, 4 row(s) in set (0.000585s)
+
+taos> use prometheus_data;
+Database changed.
+
+taos> show stables;
+              name              |      created_time       | columns |  tags  |   tables    |
+============================================================================================
+ metrics                        | 2022-04-20 07:21:09.209 |       2 |      1 |        1389 |
+Query OK, 1 row(s) in set (0.000487s)
+
+taos> select * from metrics limit 10;
+              ts               |           value           |             labels             |
+=============================================================================================
+ 2022-04-20 07:21:09.193000000 |               0.000024996 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:14.193000000 |               0.000024996 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:19.193000000 |               0.000024996 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:24.193000000 |               0.000024996 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:29.193000000 |               0.000024996 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:09.193000000 |               0.000054249 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:14.193000000 |               0.000054249 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:19.193000000 |               0.000054249 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:24.193000000 |               0.000054249 | {"__name__":"go_gc_duration... |
+ 2022-04-20 07:21:29.193000000 |               0.000054249 | {"__name__":"go_gc_duration... |
+Query OK, 10 row(s) in set (0.011146s)
+```
+
+### 使用 prompql-cli 验证 Prometheus 使用 remote_read 从 TDengine 读取数据
+
+安装 promql-cli
+
+```
+ go install github.com/nalbury/promql-cli@latest
+```
+
+在 TDengine 和 taosAdapter 服务运行状态对 Prometheus 数据进行查询
+
+```
+ubuntu@shuduo-1804 ~ $ promql-cli --host "http://127.0.0.1:9090" "sum(up) by (job)"
+JOB           VALUE    TIMESTAMP
+prometheus    1        2022-04-20T08:05:26Z
+node          1        2022-04-20T08:05:26Z
 ```
+
+暂停 taosAdapter 服务后对 Prometheus 数据进行查询
+
+```
+ubuntu@shuduo-1804 ~ $ sudo systemctl stop taosadapter.service
+ubuntu@shuduo-1804 ~ $ promql-cli --host "http://127.0.0.1:9090" "sum(up) by (job)"
+VALUE    TIMESTAMP
+
+```
+