部署到aws ec2 上 flask run [OPTIONS] Error: Could not locate Flask application. #17

tianke0711 · 2021-10-17T05:00:00Z

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tianke0711 · 2021-10-17T05:02:22Z

我尝试着简单部署到aws ec2 ubuntu上我运行flask run出现了下面问题，我没有用venv环境。我需要修改哪些地方啊。

flask run
Usage: flask run [OPTIONS]

Error: Could not locate Flask application. You did not provide the FLASK_APP environment variable.

For more information see http://flask.pocoo.org/docs/latest/quickstart/

我是通过pycharm上传的我在ubuntu 根目录建了一个项目文件夹，然后上传blogin文件的这个项目文件夹下面。

weijiang1994 · 2021-10-17T06:39:28Z

在项目根目录新建.flaskenv文件，在其中输入以下内容

FLASK_APP=blogin
FLASK_ENV=production

tianke0711 · 2021-10-17T11:10:23Z

我把以前的development哪个删除了，写了以下的。
$ nano .flaskenv

GNU nano 2.9.3 .flaskenv

FLASK_APP=blogin
FLASK_ENV=production

还是老问题

flask run
Usage: flask run [OPTIONS]

Error: Could not locate Flask application. You did not provide the FLASK_APP environment variable.

For more information see http://flask.pocoo.org/docs/latest/quickstart/

tianke0711 · 2021-10-17T11:18:53Z

我在terminal设置了 export FLASK_APP=blogin

flask run
Usage: flask run [OPTIONS]

Error: The file/path provided (blogin) does not appear to exist. Please verify the path is correct. If app is not on PYTHONPATH, ensure the extension is .py

weijiang1994 · 2021-10-17T11:36:38Z

用虚拟环境试下

cd Blogin
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt
flask run

weijiang1994 · 2021-10-17T11:47:56Z

还有看看有没有安装python-dotenv这个库

tianke0711 · 2021-10-18T04:43:13Z

@weijiang1994 安装好python-dotenv 有这个错误。

flask run

Serving Flask app 'blogin' (lazy loading)
Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production WSGI server instead.
Debug mode: off
Usage: flask run [OPTIONS]
Try 'flask run --help' for help.

Error: While importing 'blogin', an ImportError was raised.

weijiang1994 · 2021-10-18T05:35:56Z

看看运行flask run的执行路径是否有误。

tianke0711 · 2021-10-18T05:51:35Z

@weijiang1994
我运行flask run就是上面的哪个错误
Error: While importing 'blogin', an ImportError was raised.

执行路径是否有误。--->执行路径啥意思

weijiang1994 · 2021-10-18T05:56:29Z

就是你是不是在Blogin文件夹下面执行的flask run

tianke0711 · 2021-10-18T06:05:19Z

@weijiang1994 我是在Blogin文件夹下面不过这个文件夹是我ubuntu建的，因为pycharm上传的时候好像只是把local里的Blogin里的所有文件全部上传，并没有上传文件夹Blogin。所以我在ec2 ubuntu重新建了一个Blogin文件夹。然后local直接把Blogin里python文件上传上去。

weijiang1994 · 2021-10-18T06:18:04Z

建议用git操作，你不是fork了我的仓库吗，你把你的修改提交到你fork的远程仓库中去，然后在云服务器上直接git clone你的代码

tianke0711 · 2021-10-18T06:38:53Z

好的我也试试。我想知道啥原因导致运行不行

tianke0711 · 2021-10-18T07:44:12Z

试了git clone的方法 ubuntu服务器同样的错误

weijiang1994 · 2021-10-18T08:12:04Z

信任我的话，可以把你aws服务器的 IP 登录名登录密码 发我邮箱 804022023@qq.com，我帮你部署

tianke0711 · 2021-10-18T08:13:45Z

@weijiang1994 可以啦 gitclone后，建立。flaskenv文件。我把production改成development。很感谢你的热情。
刚开始的时候production

Environment: production
WARNING: This is a development server. Do not use it in a production deployment.

tianke0711 · 2021-10-18T08:13:57Z

flask run

Serving Flask app "blogin" (lazy loading)
Environment: development
Debug mode: on
Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Restarting with stat
Debugger is active!
Debugger PIN: 985-679-113

weijiang1994 · 2021-10-18T08:19:19Z

ok

tianke0711 · 2021-10-18T08:19:24Z

@weijiang1994 flask run运行后，我想打开aws url地址看看像local那样。但是打开就是错误。
浏览器不能连接到服务器。我昨天测试简单的flask app是可以的

weijiang1994 · 2021-10-18T08:20:04Z

flask run --host=0.0.0.0

tianke0711 · 2021-10-18T08:22:55Z

我运行啦还是这样的问题
flask run --host=0.0.0.0

Serving Flask app "blogin" (lazy loading)
Environment: development
Debug mode: on
Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
Restarting with stat
Debugger is active!
Debugger PIN: 985-679-113

weijiang1994 · 2021-10-18T08:24:30Z

亚马逊服务器IP多少？

tianke0711 · 2021-10-18T08:25:54Z

52.197.136.131

weijiang1994 · 2021-10-18T08:32:28Z

你这地址ping不通

tianke0711 · 2021-10-18T08:43:24Z

是这个我也ping不成功

tianke0711 · 2021-10-18T08:48:26Z

是不是要把上次测试flask的log删除掉啊，那个简单的测试app

weijiang1994 · 2021-10-18T08:50:42Z

ping不通说明你服务器有问题，跟这个没啥关系。你买的亚马逊哪个地区的？ping不通可能是国内防火墙把这个IP屏蔽掉了。

tianke0711 · 2021-10-18T08:51:23Z

我买的tokyo地区

weijiang1994 · 2021-10-18T08:52:23Z

那国内大概率裸连不上，国内的腾讯云也不错，为什么要买亚马逊的呢...

tianke0711 · 2021-10-24T09:12:02Z

@weijiang1994 现在可以像local那样运行啦。但是页面说无法连接到服务器

tianke0711 · 2021-10-24T09:12:39Z

Job "network_monitor (trigger: interval[0:01:00], next run at: 2021-10-24 09:12:02 UTC)" raised an exception
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.6/site-packages/apscheduler/executors/base.py", line 125, in run_job
retval = job.func(*job.args, **job.kwargs)
File "/home/ubuntu/SciSci/blogin/task.py", line 160, in network_monitor
with open('/var/log/nginx/access.log', 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/var/log/nginx/access.log'
Job "network_monitor (trigger: interval[0:01:00], next run at: 2021-10-24 09:12:02 UTC)" raised an exception
Traceback (most recent call last):
File "/home/ubuntu/.local/lib/python3.6/site-packages/apscheduler/executors/base.py", line 125, in run_job
retval = job.func(*job.args, **job.kwargs)
File "/home/ubuntu/SciSci/blogin/task.py", line 160, in network_monitor
with open('/var/log/nginx/access.log', 'r') as f:
FileNotFoundError: [Errno 2] No such file or directory: '/var/log/nginx/access.log'

tianke0711 · 2021-10-24T09:17:36Z

我想问一下在服务器上没有用nginx部署，你的程序仅仅用flask run后通过ip地址是可以访问的吧？

tianke0711 · 2021-10-24T09:50:20Z

240-215.ap-northeast-1.compute.amazonaws.com 拒绝了我们的连接请求。
请试试以下办法：

weijiang1994 · 2021-10-24T10:25:27Z

可以通过IP地址访问，但是你得确定你得IP地址能被国内访问到。

tianke0711 · 2021-10-24T12:06:29Z

现在打开后出现了
sqlalchemy.exc.OperationalError: (pymysql.err.OperationalError) (1698, "Access denied for user 'root'@'localhost'")
(Background on this error at: http://sqlalche.me/e/13/e3q8)

weijiang1994 · 2021-10-24T12:11:16Z

数据库连接用户名、密码错了...

tianke0711 · 2021-10-24T12:13:06Z

@weijiang1994 show tables 咋是空的啊我运行了flask db init啦

tianke0711 · 2021-10-24T12:15:40Z

use blog;
Database changed
mysql>
mysql> show tables;
Empty set (0.00 sec)

tianke0711 · 2021-10-24T12:17:53Z

flask db init
0: here is begin
I am here
[2021-10-24 12:17:31,554] DEBUG in init: Scheduler Started,---------------
Error: Directory migrations already exists and is not empty

weijiang1994 · 2021-10-24T12:23:07Z

tianke0711 · 2021-10-24T12:24:53Z

@weijiang1994 flask initdb
File "/home/ubuntu/.local/lib/python3.6/site-packages/pymysql/err.py", line 107, in raise_mysql_exception
raise errorclass(errno, errval)
sqlalchemy.exc.OperationalError: (pymysql.err.OperationalError) (1698, "Access denied for user 'root'@'localhost'")
(Background on this error at: http://sqlalche.me/e/13/e3q8)

weijiang1994 · 2021-10-24T12:25:48Z

这不是跟上面的错误一样？数据库连接配置改了啊

tianke0711 · 2021-10-25T01:06:40Z

@weijiang1994 OK啦
sudo mysql -u root # I had to use "sudo" since it was new installation

mysql> USE mysql;
mysql> UPDATE user SET plugin='mysql_native_password' WHERE User='root';
mysql> FLUSH PRIVILEGES;
mysql> exit;

sudo service mysql restart

weijiang1994 · 2021-10-25T01:18:06Z

你也可以新建用户，不一定要使用mysql的root用户，可以看这篇文章https://2dogz.cn/blog/article/30/

tianke0711 · 2021-10-25T01:48:41Z

@weijiang1994 OK 谢谢我好好看看。你有时间可以把你做博客网站的记录一步步写下来。

tianke0711 · 2021-10-25T08:37:57Z

你好为啥老是出现下面错误我感觉需要修改数据库连接的参数，我想问一下哪里设置

sqlalchemy.exc.TimeoutError
sqlalchemy.exc.TimeoutError: QueuePool limit of size 10 overflow 10 reached, connection timed out, timeout 30 (Background on this error at: http://sqlalche.me/e/13/3o7r)

weijiang1994 · 2021-10-26T01:18:31Z

你好为啥老是出现下面错误我感觉需要修改数据库连接的参数，我想问一下哪里设置

sqlalchemy.exc.TimeoutError sqlalchemy.exc.TimeoutError: QueuePool limit of size 10 overflow 10 reached, connection timed out, timeout 30 (Background on this error at: http://sqlalche.me/e/13/3o7r)

这个不是很清楚，可以看看这个https://stackoverflow.com/questions/24956894/sql-alchemy-queuepool-limit-overflow

tianke0711 · 2021-10-27T02:35:05Z

@weijiang1994 添加博客的时候的点击submit时候,出现了错误。

File "/home/ubuntu/.local/lib/python3.6/site-packages/whoosh/index.py", line 421, in init
TOC.read(self.storage, self.indexname, schema=self._schema)
File "/home/ubuntu/.local/lib/python3.6/site-packages/whoosh/index.py", line 664, in read
segments = stream.read_pickle()
File "/home/ubuntu/.local/lib/python3.6/site-packages/whoosh/filedb/structfile.py", line 245, in read_pickle
return load_pickle(self.file)
ValueError: unsupported pickle protocol: 5

weijiang1994 · 2021-10-27T03:18:03Z

你自己google搜一下，我也不清楚什么原因

tianke0711 · 2021-10-27T03:31:30Z

@weijiang1994 可能是python版本原因，python3.8支持5，而现在服务器的python版本是3.6. 我也不知道咋解决除了升级以外。你开发的python版本是啥？

weijiang1994 · 2021-10-27T03:35:22Z

我服务器端部署的也是3.5可以正常运行，开发环境3.6 3.8都可以正常运行

weijiang1994 · 2021-10-27T03:38:21Z

tianke0711 · 2021-10-27T03:50:45Z

@weijiang1994 我local3.8可以啊！难道上传文件时候把3.8环境文件上传进去了吗。

weijiang1994 · 2021-10-27T04:37:25Z

不清楚

tianke0711 · 2021-10-27T06:10:06Z

@weijiang1994 你可知道程序里哪里可能产生pickle(self.file）pickle 格式，估计保存h5格式。其他创建类别以及上传图片都可以。估计哪里有python3.8运行时候保存的环境文件。

weijiang1994 · 2021-10-27T06:25:09Z

在models.py中找到图中的代码段，将红圈中的装饰器注释掉

tianke0711 · 2021-10-27T06:41:07Z

@weijiang1994 OK啦只要删除掉
/whooshee/blog$ l里面的文件.seg 和.toc文件
MAIN_WRITELOCK MAIN_megxx9m909gsh1v1.seg _MAIN_16.toc

估计这两个文件在local生成的。

weijiang1994 · 2021-10-27T06:51:12Z

我在.gitignore文件中添加了这个路劲，不会上传到github上去，除非你是把本地的文件直接通过ftp的方式推上去。

tianke0711 · 2021-10-27T06:53:40Z

@weijiang1994 我scp上传上去的

tianke0711 changed the title ~~部署到aws 而出~~ 部署到aws ec2 上 flask run [OPTIONS] Error: Could not locate Flask application. Oct 17, 2021

部署到aws ec2 上 flask run [OPTIONS] Error: Could not locate Flask application. #17

部署到aws ec2 上 flask run [OPTIONS] Error: Could not locate Flask application. #17

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