Question

我正在尝试在ec2实例中使用蝗虫进行项目的负载测试。因此，我已经使用以下命令安装了蝗虫：

python -m pip install locustio

我得到以下答复：

Requirement already satisfied: locust in /usr/local/lib/python2.7/site-packages (0.0)
Requirement already satisfied: locustio in /usr/local/lib/python2.7/site-packages (from locust) (0.9.0)
Requirement already satisfied: six>=1.10.0 in /usr/local/lib/python2.7/site-packages (from locustio->locust) (1.11.0)
Requirement already satisfied: msgpack>=0.4.2 in /usr/local/lib64/python2.7/site-packages (from locustio->locust) (0.5.6)
Requirement already satisfied: requests>=2.9.1 in /usr/local/lib/python2.7/site-packages (from locustio->locust) (2.19.1)
Requirement already satisfied: gevent>=1.2.2 in /usr/local/lib64/python2.7/site-packages (from locustio->locust) (1.3.6)
Requirement already satisfied: pyzmq>=16.0.2 in /usr/local/lib64/python2.7/site-packages (from locustio->locust) (17.1.2)
Requirement already satisfied: flask>=0.10.1 in /usr/local/lib64/python2.7/site-packages (from locustio->locust) (1.0.2)
Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /usr/local/lib/python2.7/site-packages (from requests>=2.9.1->locustio->locust) (3.0.4)
Requirement already satisfied: urllib3<1.24,>=1.21.1 in /usr/local/lib/python2.7/site-packages (from requests>=2.9.1->locustio->locust) (1.23)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python2.7/site-packages (from requests>=2.9.1->locustio->locust) (2018.8.24)
Requirement already satisfied: idna<2.8,>=2.5 in /usr/local/lib/python2.7/site-packages (from requests>=2.9.1->locustio->locust) (2.6)
Requirement already satisfied: greenlet>=0.4.14; platform_python_implementation == "CPython" in /usr/local/lib64/python2.7/site-packages (from gevent>=1.2.2->locustio->locust) (0.4.15)
Requirement already satisfied: itsdangerous>=0.24 in /usr/local/lib/python2.7/site-packages (from flask>=0.10.1->locustio->locust) (0.24)
Requirement already satisfied: Jinja2>=2.10 in /usr/local/lib/python2.7/site-packages (from flask>=0.10.1->locustio->locust) (2.10)
Requirement already satisfied: Werkzeug>=0.14 in /usr/local/lib/python2.7/site-packages (from flask>=0.10.1->locustio->locust) (0.14.1)
Requirement already satisfied: click>=5.1 in /usr/local/lib64/python2.7/site-packages (from flask>=0.10.1->locustio->locust) (7.0)
Requirement already satisfied: MarkupSafe>=0.23 in /usr/local/lib/python2.7/site-packages (from Jinja2>=2.10->flask>=0.10.1->locustio->locust) (1.0)

我在想，蝗虫已经被安装了。但是，当我执行python脚本启动服务器时，它显示如下：

bash: locust: command not found

任何人都可以帮助我了解这里出了什么问题吗？预先感谢。

Answer 1

ec2实例不一定会在通常的目录中安装东西。

我建议运行以下命令：

find / -name locust 2>/dev/null

这将向您显示蝗虫的安装位置（可能在/home/{user}/.local/bin之类的地方）

将此添加到您的路径（或在上面的命令中找到的任何目录）：

export PATH=$PATH:/home/{user}/.local/bin

之后，您的外壳程序应该可以找到该命令。

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