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问题描述：
在Nginx作为代理的情况下，当通过telegraf进行数据采集并代理到Kafka时，可能出现"连接超时"的问题，具体表现为：
- Telegraf向Kafka发送的数据在接收到后无法正确解析。
- 配置中的Nginx配置项
proxy_pass未设置正确，导致Nginx不能与Kafka服务器进行连接。 - Nginx监听的8080端口没有被正确配置为Kafka的监听端口。
- KAFKA的相关配置项如
brokers、client_id等未指定为Nginx代理服务器A上的服务地址。 - Kafka服务器B通过telgraf被Nginx代理，并且在启动时设置了非HTTPS通信选项（
insecure_skip_verify）导致TLS/TLS扩展模块无法工作，从而引发连接超时问题。
以下是在Nginx及Kafka的基础架构上提供的解决方案：
- Nginx配置：
server {
listen 8080; # Listen port of the application or data source
location / {
proxy_pass https://your-kafka-server.com:9092; # Replace with your Kafka server's address and port
# Add SSL/TLS configuration if needed, e.g., using certbot or a CA installed on your system
}
}
server {
listen 8081; # Listen port of the agent-side tool (e.g., telegraf)
location /agent {
include proxy.conf;
}
# Add TLS/TLS configuration if needed, e.g., using certbot or a CA installed on your system
include proxy_config/nginx.conf;
# SSL/TLS certificates must be installed on the proxy side
ssl_certificate /path/to/cert.pem; # replace with path to your trusted CA certificate file
ssl_certificate_key /path/to/key.pem; # replace with path to your trusted private key file
include nginx/*.conf; # Include the custom nginx.conf file for the specific task
}
- Kafka Configuration:
kafka {
bootstrap.servers: ["your-kafka-server.com:9092"], # Replace with your Kafka servers' addresses and ports
group.id: "your-group-id", # Replace with your Kafka group ID
ssl=verify=tls , # Enable TLS/TLS verification
insecure_skip_verify = false, # Skip SSL/TLS validation when setting `insecureSkipVerify` to true
}
- Nginx Proxy Config:
upstream kafka_server_b {
server 172.18.38.201:9092;
server 172.18.38.202:9092;
server 172.18.38.203:9092;
}
server {
listen 8080; # Listen port of the application or data source
location / {
proxy_pass kafka_server_b;
include proxy.conf;
}
# Add SSL/TLS configuration if needed, e.g., using certbot or a CA installed on your system
include proxy_config/nginx.conf;
# SSL/TLS certificates must be installed on the proxy side
ssl_certificate /path/to/cert.pem; # replace with path to your trusted CA certificate file
ssl_certificate_key /path/to/key.pem; # replace with path to your trusted private key file
include nginx/*.conf; # Include the custom nginx.conf file for the specific task
}
- Telegraf Configuration:
[inputs.kafka]
topics = "hypervisor"
brokers = ["your-kafka-server.com:9092"]
insecure_skip_verify = true
# client_id="Telegraf"
version="0.11.0.0"
metadata_full = true
enable_tls = false
data_format = "json"
[data]
{
"source": "https://localhost:8080/agent",
"tags": [
{ "name": "Name", "value": "Nginx Agent" },
{ "name": "Environment", "value": "Production" },
{ "name": "Function", "value": "Agent" },
],
"labels": [],
}
确保上述配置文件已成功保存在当前目录下，并且已重启Nginx和Kafka服务器以应用更改。若Kafka服务器需要使用HTTPS通信，建议修改Nginx配置以启用SSL/TLS，例如：
ssl_certificate /path/to/cert.pem; # replace with path to your trusted CA certificate file
ssl_certificate_key /path/to/key.pem; # replace with path to your trusted private key file
include proxy_config/nginx.conf;
# SSL/TLS certificates must be installed on the proxy side
ssl_certificate /path/to/ssl/server.crt; # replace with path to your server certificate file
ssl_certificate_key /path/to/ssl/server.key; # replace with path to your server private key file
location /agent {
include proxy.conf;
}
注意：这些示例配置依赖于您已经安装的SSL/TLS证书和私钥，以及您的实际Kafka服务器IP和端口号。您可能需要根据实际情况对上述配置进行调整，例如使用系统环境变量或虚拟主机配置文件。如果您的服务器位于不同的网络环境中，您可能需要相应地修改Nginx内部的listen和include指令，以指向正确的Kafka服务器。同时，确保代理服务器A和Kafka服务器C之间的HTTPS连接也已打开。在部署过程中，请务必根据具体的业务需求和条件，选择适合您的解决方案。
