使用pythonSDK停止OpenStack服务器实例
我正在尝试使用pythonSDK创建一个端点来停止我的openstasck服务器实例,但是当我尝试访问/停止_服务器时,我遇到了一个错误,您能帮助我吗使用pythonSDK停止OpenStack服务器实例,python,flask,openstack,openstack-nova,openstacksdk,Python,Flask,Openstack,Openstack Nova,Openstacksdk,我正在尝试使用pythonSDK创建一个端点来停止我的openstasck服务器实例,但是当我尝试访问/停止_服务器时,我遇到了一个错误,您能帮助我吗 from flask import Flask, request from openstack import connection from pprint import pprint import json import os app = Flask(__name__) # Source the openstack project rc fil
from flask import Flask, request
from openstack import connection
from pprint import pprint
import json
import os
app = Flask(__name__)
# Source the openstack project rc file before running this app, to create the
# environment variables needed
conn = connection.Connection(auth_url=os.environ['OS_AUTH_URL'],
project_name=os.environ['OS_PROJECT_NAME'],
username=os.environ['OS_USERNAME'],
password=os.environ['OS_PASSWORD'],
user_domain_id="default",
project_domain_id=os.environ['OS_PROJECT_DOMAIN_ID'])
@app.route("/")
def hello():
return "Hello from Flask!"
@app.route("/list")
def list_openstack_resources():
# Check if connection is established
print("conn: ", conn)
# Print list of servers, images, flavors, endpoints, projects, users
server_list = list(conn.compute.servers())
image_list = list(conn.compute.images())
flavor_list = list(conn.compute.flavors())
project_list = list(conn.identity.projects())
user_list = list(conn.identity.users())
pprint(server_list)
pprint(image_list)
pprint(flavor_list)
pprint(project_list)
pprint(user_list)
return "List printed to stdout"
@app.route("/create_server")
def create_server():
# Check if connection is established
print("conn: ", conn)
# Create the volume first
volume_size = request.args.get('volume_size')
print("Starting to create volume with size (in GiB): ", volume_size)
volume = conn.create_volume(size=volume_size,
image="cirros-0.5.1-x86_64-disk",
wait=True,
bootable=True,
)
print("Create volume: ", json.dumps(volume))
# Create the server using the server_name parameter in the GET request
server_name = request.args.get('server_name')
print("Starting to create the server with name: ", server_name)
server = conn.create_server(name=server_name,
flavor="m1.micro",
terminate_volume=True,
timeout=180,
boot_volume=volume.id,
key_name="test-app",
network='shared'
)
print("Created server: ", json.dumps(server))
return "Server create request sent!"
@app.route("/stop_server")
def stop_server():
for server in conn.compute.servers():
print(json.dumps(server))
@app.route("/delete_server")
def delete_server():
print("delete: ", conn)
server_id = request.args.get('server_id')
delete_server = conn.delete_server(name=server_id, ignore_missing=False, force=False)
print('removed', json.dumps(delete_server))
if __name__ == "__main__":
app.run(debug=True, host='0.0.0.0', port=8080)
我收到此错误:
类型错误
TypeError:view函数未返回有效响应。函数要么返回None,要么在没有返回语句的情况下结束。在技术
客户机服务器中当客户机发送请求时服务器应发回响应
但是在函数stop_server()
和delete_server()
中,您不使用返回文本或返回渲染模板(…)
或返回jsonify()
或返回响应(…)
,等等-因此Python使用标准返回无(
)而且flask
不知道向客户端发送什么-这会产生错误
您应该至少发送空字符串return”“
,或者最好发送成功信息
@app.route("/stop_server")
def stop_server():
# ... your code ...
return "success"
@app.route("/delete_server")
def delete_server():
# ... your code ...
return "success"
您的/stop\u服务器
和/delete\u服务器
必须返回文本(或其他响应
),但您不使用返回文本
或返回
渲染模板()`(或其他返回
),因此它们使用不返回
,这将生成错误。您至少应该返回空字符串-返回“”
非常感谢。确实如此,我很抱歉这个问题,我是编程初学者,我为学校做这项工作=)非常感谢=)