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我有一个用 python 编写的 openshift 应用程序，并且想使用 Flask-mysql

import os
from datetime import datetime
from flask import Flask, request, flash, url_for, redirect, \
     render_template, abort, send_from_directory, json


from flask.ext.mysql import MySQL


app = Flask(__name__)
app.config.from_pyfile('flaskapp.cfg')
mysql = MySQL()

# MySQL configurations
app.config['MYSQL_DATABASE_USER'] = ' adminuWfyNxG'
app.config['MYSQL_DATABASE_PASSWORD'] = ' '
app.config['MYSQL_DATABASE_DB'] = ''
app.config['MYSQL_DATABASE_HOST'] = '127.4.253.2:3306'
mysql.init_app(app)

#conn = mysql.connect()
#cursor = conn.cursor()


@app.route("/")
def index():
    return render_template('index.html')

@app.route('/showSignUp')
def showSignUp():
    return render_template('signup.html')

@app.route('/<path:resource>')
def serveStaticResource(resource):
    return send_from_directory('static/', resource)


@app.route('/signUp',methods=['POST','GET'])
def signUp():
    try:
        _name = request.form['inputName']
        _email = request.form['inputEmail']
        _password = request.form['inputPassword']

        # validate the received values
        if _name and _email and _password:

            # All Good, let's call MySQL

            conn = mysql.connect()
            cursor = conn.cursor()

            cursor.callproc('sp_createUser',(_name,_email,_password))
            data = cursor.fetchall()

            if len(data) is 0:
                conn.commit()
                return json.dumps({'message':'User created successfully !'})
            else:
                return json.dumps({'error':str(data[0])})
        else:
            return json.dumps({'html':'<span>Enter the required fields</span>'})

    except Exception as e:
        return json.dumps({'error':str(e)})
    finally:
        cursor.close()
        conn.close()

if __name__ == "__main__":
    app.run()

当我尝试在我的应用程序上运行它时，我收到一个错误。

HTTP/1.1 503 服务暂时不可用 日期：2015 年 9 月 2 日星期三 19:09:34 GMT 内容长度：428 连接：关闭 内容类型：text/html；字符集=iso-8859-1

我根据 openshift 配置使用数据库用户、密码、数据库名称和主机。

任何人都可以帮助我吗？

日志文件输出：

在 127.4.253.1:8080 上启动 WSGIServer 类型烧瓶 ... * 在http://127.4.253.1:8080/ 127.4.253.1 上运行 - - [03/Sep/2015 13:40:33] "GET /showSignUp HTTP/1.1 “ 500 - 请求错误：回溯（最近一次调用最后一次）：文件“/opt/rh/python27/root/usr/lib/python2.7/site-packages/werkzeug/serving.p y”，第 159 行，在 run_wsgi执行（app）文件“/opt/rh/python27/root/usr/lib/python2.7/site-packages/werkzeug/serving.py”，第146行，在执行application_iter = app（environ，start_response）文件“/ var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py”，第 1836 行，通话中 返回 self.wsgi_app(environ, start_response) 文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2 .7.egg/flask/app.py”，第 1836 行，通话中 返回 self.wsgi_app(environ, start_response) 文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2 .7.egg/flask/app.py”，第 1820 行，在 wsgi_app 响应 = self.make_response(self.handle_exception(e)) 文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/ python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py”，第 1403 行，在 handle_exception reraise(exc_type, exc_value, tb) 文件中“/var /lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py“，行1817，在 wsgi_app 响应 = self.full_dispatch_request() 文件"/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py" ，第 1477 行，在 full_dispatch_request rv = self.handle_user_exception(e) 文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask- 0.10.1-py2.7.egg/flask/app.py”，第 1381 行，在 handle_user_exception reraise(exc_type, exc_value, tb) 文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/ python/virtenv/lib/python2.7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py”，第 1473 行，在 full_dispatch_request rv = self.preprocess_request() 文件中“/var/ lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2。7/site-packages/Flask-0.10.1-py2.7.egg/flask/app.py”，第 1666 行，在 preprocess_request rv = func() 文件中“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/ runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py”，第 48 行，在 before_request ctx.mysql_db = self.connect()文件“/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py” ，第 44 行，在连接中返回 MySQLdb.connect(**self.connect_args) 文件“/opt/rh/python27/root/usr/lib64/python2.7/site-packages/MySQLdb//var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py”，行48、在before_request ctx.mysql_db = self.connect() 文件"/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3 -py2.7.egg/flaskext/mysql.py”，第 44 行，在连接中返回 MySQLdb.connect(**self.connect_args) 文件“/opt/rh/python27/root/usr/lib64/python2.7/site -packages/MySQLdb//var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py”，行48、在before_request ctx.mysql_db = self.connect() 文件"/var/lib/openshift/55d41b2c0c1e66a0060000b8/app-root/runtime/dependencie s/python/virtenv/lib/python2.7/site-packages/Flask_MySQL-1.3 -py2.7.egg/flaskext/mysql.py”，第 44 行，在连接中返回 MySQLdb.connect(**self.connect_args) 文件“/opt/rh/python27/root/usr/lib64/python2.7/site -packages/MySQLdb/7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py”，第44行，在connect返回MySQLdb.connect(**self.connect_args)文件“/opt/rh/python27/root/ usr/lib64/python2.7/site-packages/MySQLdb/7/site-packages/Flask_MySQL-1.3-py2.7.egg/flaskext/mysql.py”，第44行，在connect返回MySQLdb.connect(**self.connect_args)文件“/opt/rh/python27/root/ usr/lib64/python2.7/site-packages/MySQLdb/init .py”，第 81 行，在 Connect 返回 Connection(*args, **kwargs) 文件“/opt/rh/python27/root/usr/lib64/python2.7/site-packages/MySQLdb/connections.py” ，第 187 行，在init super(Connection, self) .init (*args, **kwargs2) OperationalError: (2005, "Unknown MySQL server host '127.4.253.2:3306' (1)")

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