Prometheus自定义收集器在导出时挂起

Question

我正在尝试创建一个自定义收集器来收集路由器的内存统计数据并导出到prometheus，我使用的是python prometheus-client，并具有以下代码：

from prometheus_client import start_http_server
from prometheus_client.core import CounterMetricFamily, REGISTRY
import requests
import json



class MemoryCollector(object):
    def collect(self):
        c = CounterMetricFamily('ODL_memory_monitoring', 'Memory for each process on box', labels=['node', 'process'])
        url = "http://<ip>:8181/restconf/operational/network-topology:network-topology/topology/topology-netconf/node/IDC_R-Leaf3/yang-ext:mount/Cisco-IOS-XR-procmem-oper:processes-memory/no\
des"
        headers = {
                'authorization': "<token>",
                'cache-control': "no-cache",
                'postman-token': "<token>"
        }
        response = requests.request("GET", url, headers=headers)
        reply = json.loads(response.text)
        for node in reply['nodes']['node']:
            for process in node['process-ids']['process-id']:
                if process['name'] == 'tcp':
                    c.add_metric([node['node-name'], process['name']], process['malloc-size'])
                    print("Adding metric {} {}".format(node['node-name'], process['name']))
        yield c



def main():
    start_http_server(8000)
    REGISTRY.register(MemoryCollector())


if __name__ == '__main__':
    main()

当我导航到网页(<ip>:8000)时，它就挂起了，并且没有更新指标。是否存在任何性能问题？这是创建自定义收集器的正确方式吗？

Answer 1

您有一个无限循环，请尝试删除while True:。