flask项目注册到nacos,一开始没问题.过一会nacos监控那里实例数就没了

code

import datetime
import logging
import random

from flask import Flask

from pyctuator.pyctuator import Pyctuator
import nacos
# Keep the console clear - configure werkzeug (flask's WSGI web app) not to log the detail of every incoming request
logging.getLogger("werkzeug").setLevel(logging.WARNING)

my_logger = logging.getLogger("example")

app = Flask("Flask Example Server")


@app.route("/")
def hello():
    my_logger.debug(f"{datetime.datetime.now()} - {str(random.randint(0, 100))}")
    print("Printing to STDOUT")
    return "Hello World!"


example_app_address = "192.168.1.2"
example_sba_address = "192.168.1.6"

Pyctuator(
    app,
    "huiche-ai",
    app_url=f"http://{example_app_address}:5000",
    pyctuator_endpoint_url=f"http://{example_app_address}:5000/pyctuator",
    registration_url=f"http://{example_sba_address}:8764/instances",
    app_description="Demonstrate Spring Boot Admin Integration with Flask",
)
def regis_server_to_nacos():
    SERVER_ADDRESSES = "192.168.1.6"
    NAMESPACE = "public"

    # no auth mode
    client = nacos.NacosClient(SERVER_ADDRESSES, namespace=NAMESPACE)
    # auth mode
    # client = nacos.NacosClient(SERVER_ADDRESSES, namespace=NAMESPACE, username="nacos", password="nacos")

    # get config
    data_id = "nacos.cfg.dataId"
    group = "test"
    print(client.get_config(data_id, group))

    client.add_naming_instance("heiche-ai", "192.168.1.2", "5000")
if __name__ == '__main__':
    regis_server_to_nacos()
    app.run(port=5000, host="0.0.0.0",debug=True)

1. 启动项目,nacos上成功注册
   

2.过一会

Start with regis_server_to_nacos(), especially client.add_naming_instance(), and compare its registration flow with the subsequent app.run() call. Reproduce the instance disappearing from Nacos, then inspect the registration lifecycle and comment history; done means the Flask instance remains visible after the reported delay.