nginx的部分 配置内容如下 ，再后面是网站的配置就不贴上来了:

`error_log "pipe:rollback /opt/logs/error.log interval=1d baknum=14 maxsize=1G";

pid /opt/logs/nginx.pid;
worker_rlimit_nofile 51200;

events {
use epoll;
worker_connections 51200;
multi_accept on;
}

http {
include mime.types;
default_type application/octet-stream;
log_format main '{"remote_addr":"$remote_addr","remote_user":"$remote_user","time_local":"$time_iso8601","request":"$request","status":"$status","body_bytes_sent":"$body_bytes_sent","http_referer":"$http_referer","http_user_agent":"$http_user_agent","http_x_forwarded_for":"$http_x_forwarded_for","server_name":"$server_name","upstream_addr":"$upstream_addr","upstream_response_time":"$upstream_response_time","upstream_status":"$upstream_status","http_host":"$http_host","request_time":"$request_time"}';
access_log "pipe:rollback /opt/logs/access.log interval=1d baknum=7 maxsize=10G" main;
charset utf-8;
rewrite_log on;

root /home/www/;

check_shm_size  40m;
client_max_body_size 800m;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
sendfile        on;
tcp_nopush     on;
keepalive_timeout 60;
tcp_nodelay on;

server_tag off;
server_info off;

gzip  on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 6;
gzip_types text/plain application/javascript text/css application/json application/x-javascript application/xml image/jpeg image
gzip_disable "MSIE [1-6]\.";
gzip_vary off;`

建议升级最新版本 3.1.0

在main里显示地设置 worker_shutdown_timeout (例如 worker_shutdown_timeout 300s ;)，确保上一次old processes全部优雅退出后，再执行下一次reload。