cloudflare 使用home assistant 出现400:Bad Request错误的处理

在configuraiton.yaml添加

http:
   # Cloudflare setting to unlock reverse proxy
   use_x_forwarded_for: true
   trusted_proxies:
     - 192.168.0.109

https://community.home-assistant.io/t/issue-with-nginx-reverse-proxy-setup-external-access/321776/8

# Uncomment this if you are using SSL/TLS, running in Docker container, etc.
http:
  ip_ban_enabled: true
  login_attempts_threshold: 5
  use_x_forwarded_for: true
  trusted_proxies:
    - 172.30.33.0/24
取而代之的是：

# Uncomment this if you are using SSL/TLS, running in Docker container, etc.
 http:
  ip_ban_enabled: true
  login_attempts_threshold: 5
  use_x_forwarded_for: true
  trusted_proxies:
    - 172.30.33.0/24

实践解决如下：

nano /usr/share/hassio/homeassistant/configuration.yaml

# Loads default set of integrations. Do not remove.
default_config:

# Load frontend themes from the themes folder
frontend:
  themes: !include_dir_merge_named themes

automation: !include automations.yaml
script: !include scripts.yaml
scene: !include scenes.yaml
 http:
  ip_ban_enabled: true
  use_x_forwarded_for: true
  trusted_proxies:
    - 192.168.0.0/24
    - 127.0.0.1
    - 172.16.0.0/12
    - 172.30.33.0/24
    - 172.30.32.0/23