Question

我是Python的新手，现在学习python，我拥有Prometheus配置文件，现在需要在一个节点中添加一些字段和值。在rt模式下加载时，它将变为ordereddict格式，并且无法进入节点，无法添加字段

    # my global config
global:
  scrape_interval:     60s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 60s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
    - scheme: http
      path_prefix: /
      static_configs:
        - targets:
          - 127.0.0.1:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  - "first_rules.yml"
  - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:

  - job_name: 'cassandra'
    static_configs:
    - targets: ['localhost:18080']

  - job_name: 'machine'
    static_configs:
    - targets: ['localhost:9100']

在scrape_configs下，对于job_name：'machine'，我需要在使用Ruamel yaml python时跟踪数据，

- job_name: 'machine'
    honor_labels: true
    static_configs:
    - targets: ['localhost:9100']
      labels:
        ip: 'x.x.x.x

下面我尝试但出现错误的代码

import sys
from ruamel.yaml import YAML
from collections import OrderedDict
from pathlib import Path

yaml=YAML()
yaml.preserve_quotes = True
yaml.explicit_start = True
yaml.default_flow_style = False
with open('D:\***\prometheus.yml') as fp:
    data = yaml.load(fp)

print("data = %s" %(data))

for elem in data:
    if elem['scrape_configs']['static_configs']['job_name']== 'machine':
      elem['honor_labels']='true'
    break  # no need to iterate further
yaml.dump(data, sys.stdout)

错误是：

 if elem['scrape_configs']['static_configs']['job_name']== 'machine':
TypeError: string indices must be integers

Process finished with exit code 1

如何使用python向现有节点添加新条目？

我在此question中遵循了安东的回答，但仍然无法获得

for elem in data:
    print('elem', elem)
    if elem['job_name'] == 'machine':
        print('elem->honor_labels', elem['honor_labels'])
        elem['honor_labels'] = ['true']

错误堆栈：

elem global
  File "D:/***/.idea/editYaml.py", line 19, in <module>
    if elem['job_name'] == 'machine':
TypeError: string indices must be integers

如果Yaml中有更多节点，如何访问job_name？请引导我。

如何使用Ruamel Yaml python在config yml中添加新字段？

0 个答案: