TDengine安装,python客户端测试,接入DBeaver

2022-05-13 05:07:11

服务端TDengine安装

根据文档推荐，目前支持linux裸机安装，不建议docker安装，所以我们这里裸机安装

1.通过这个https://www.taosdata.com/assets-download/TDengine-server-2.2.0.5-Linux-x64.deb链接下载安装文件

2.放置此文件到192.168.0.13服务器上，通过命令sudo dpkg -i TDengine-server-2.2.0.5-Linux-x64.deb 安装

3.通过命令启动TDengine数据库sudo systemctl start taosd

4.参考https://www.taosdata.com/cn/getting-started/#Quick%20Start上的命令可以去创建数据库和表测试

python客户端容器

以python做一个docker容器为例。这里有一个很奇葩的地方，每一种TDengine的连接方式都必须要设置一个taos.cfg的路径，和安装一个独立的客户端程序

创建一个Dockerfile和一个测试文件sub.py ，一个requirements.txt文件，如果不用faker库，requirements.txt文件也不需要

Dockerfile内容如下

FROM python:3.9.7
ADD . .
RUN wget https://www.taosdata.com/assets-download/TDengine-client-2.2.0.5-Linux-x64.tar.gz
RUN tar -xzf TDengine-client-2.2.0.5-Linux-x64.tar.gz
WORKDIR /TDengine-client-2.2.0.5
RUN ./install_client.sh
WORKDIR /
RUN git clone --depth 1 https://github.com/taosdata/TDengine.git
RUN pip install -r requirements.txt  -i https://pypi.tuna.tsinghua.edu.cn/simple
RUN pip install ./TDengine/src/connector/python -i https://pypi.tuna.tsinghua.edu.cn/simple
CMD ["python","test.py"]

测试主文件test.py

import time
 
import taos
from faker import Faker
 
fake = Faker()
print()
conn = taos.connect(host="192.168.0.13", user="root", password="taosdata", config="C:\TDengine\cfg")
c1 = conn.cursor()
import datetime
 
# 创建数据库
# c1.execute('create database db')
c1.execute('use db')
print("开始时间")
print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))
 
# # 建表
# c1.execute('create table tb (ts timestamp, temperature int, humidity float)')
# # 插入数据
start_time = datetime.datetime(2018, 11, 1)
# affected_rows = c1.execute("insert into tb_ts_kv_t values (\'%s\', 'DEVICE', '1eb3c1d1d5db250860b6553ce011990', 'DCT', '1623200', True, '123', '456', 3.0)" %start_time)
# 批量插入数据
time_interval = datetime.timedelta(seconds=1)
sqlcmd = ['insert into tb_ts_kv_t values']
for irow in range(1, 1000):
    sqlcmd = ['insert into tb_ts_kv_t values']
    start_time += time_interval
    sqlcmd.append("('" + str(start_time) + "', 'DEVICE', '"+fake.company()+"', '"+fake.name()+"', '" + str(
        irow) + "', True, '"+fake.word()+"', '456', " + str(irow * 1.2) + ")")
    exestring = ' '.join(sqlcmd)
    # sqlcmd.append('(\'%s\', %d, %f)' %(start_time, irow, irow*1.2))
    affected_rows = c1.execute(exestring)
print("结束时间")
print(time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(time.time())))
 
c1.execute('select * from tb_ts_kv_t')
for data in c1:
    print("ts=%s, temperature=%d, humidity=%f" %(data[0], data[4],data[-1]))