# Nginx 主配置 — 含 JSON 访问日志格式（ELK 采集用）
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    # ─── JSON 访问日志格式（ELK Filebeat → Elasticsearch）───
    log_format json_combined escape=json '{'
        '"timestamp":"$time_iso8601",'
        '"remote_addr":"$remote_addr",'
        '"remote_user":"$remote_user",'
        '"request":"$request",'
        '"status":$status,'
        '"body_bytes_sent":$body_bytes_sent,'
        '"http_referer":"$http_referer",'
        '"http_user_agent":"$http_user_agent",'
        '"http_x_forwarded_for":"$http_x_forwarded_for",'
        '"request_time":$request_time,'
        '"upstream_response_time":"$upstream_response_time",'
        '"host":"$host",'
        '"server_name":"$server_name"'
    '}';

    access_log /var/log/nginx/access.log json_combined;
    error_log /var/log/nginx/error.log warn;

    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    client_max_body_size 20m;

    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/xml+rss application/atom+xml image/svg+xml;

    include /etc/nginx/conf.d/*.conf;
}