Nginx 配置说明
配置概述
本配置文件用于在 PostHog 部署中实现请求转发和负载均衡,主要处理两类服务:
- PostHog 主服务(Web 服务)
- Capture 事件捕获服务
服务配置
上游服务定义
upstream posthog_web {
server localhost:8000; # PostHog 主服务
}
upstream posthog_capture {
server localhost:8001; # Capture 事件捕获服务
}
路由规则
1. 事件捕获路由
所有事件相关的请求都会转发到 Capture 服务:
/e/
和/e
:标准事件捕获/engage
:用户属性更新/track
:事件追踪/s/
和/s
:会话录制/i/v0/e/
:兼容性 API/capture/
:新版捕获 API
配置示例:
location ~ ^/(e|engage|track|s|i/v0/e|capture)/ {
proxy_pass http://posthog_capture;
# ... 其他配置
}
2. 主服务路由
其他所有请求都转发到 PostHog 主服务:
- 静态文件(
/static/
) - 配置文件(
/config.json
) - API 请求
- Web 界面
配置示例:
location / {
proxy_pass http://posthog_web;
# ... 其他配置
}
性能优化
1. GZIP 压缩
启用了 GZIP 压缩以减少传输大小:
gzip on;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
2. 缓存配置
-
静态文件:
location /static/ {
expires 1y;
add_header Cache-Control "public, no-transform";
} -
配置文件:
location /config.json {
expires -1;
add_header Cache-Control "no-cache";
}
安全配置
1. CORS 配置
为事件捕获接口配置了跨域支持:
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
2. 请求限制
- 最大请求体积:20MB
- 超时设置:300秒
- 连接数限制:10240
日志配置
1. 访问日志
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
2. 错误日志
error_log /var/log/nginx/error.log warn;
健康检查
提供了基本的健康检查端点:
location /health {
access_log off;
return 200 'ok';
}
部署说明
1. 文件位置
- 配置文件:
/etc/nginx/nginx.conf
- 访问日志:
/var/log/nginx/access.log
- 错误日志:
/var/log/nginx/error.log
2. 启动命令
# 测试配置
nginx -t
# 启动 Nginx
nginx
# 重新加载配置
nginx -s reload
# 停止服务
nginx -s stop
3. 配置检查清单
- 确认上游服务地址和端口
- 检查日志路径权限
- 验证 SSL 证书(如果启用 HTTPS)
- 测试 CORS 配置
- 确认缓存策略
- 验证健康检查端点
参考配置
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 10240;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
keepalive_timeout 65;
client_max_body_size 20M;
proxy_read_timeout 300;
proxy_connect_timeout 300;
proxy_send_timeout 300;
# GZIP 配置
gzip on;
gzip_disable "msie6";
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
upstream posthog_web {
server localhost:8000;
}
upstream posthog_capture {
server localhost:8001;
}
server {
listen 80;
server_name _;
# 健康检查
location /health {
access_log off;
return 200 'ok';
}
# 事件捕获路由 - 转发到 Capture 服务
location ~ ^/(e|engage|track|s|i/v0/e|capture)/ {
proxy_pass http://posthog_capture;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# 允许跨域
add_header 'Access-Control-Allow-Origin' '*' always;
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS' always;
add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization' always;
add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range' always;
# 处理 OPTIONS 请求
if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range,Authorization';
add_header 'Access-Control-Max-Age' 1728000;
add_header 'Content-Type' 'text/plain; charset=utf-8';
add_header 'Content-Length' 0;
return 204;
}
}
# 静态文件和其他请求 - 转发到 PostHog 主服务
location / {
proxy_pass http://posthog_web;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
# 静态文件缓存
location /static/ {
expires 1y;
add_header Cache-Control "public, no-transform";
}
# 配置文件
location /config.json {
expires -1;
add_header Cache-Control "no-cache";
}
}
}
}