add log format

nginx.conf

 worker_processes auto;
-error_log logs/error.log warn;
 
 events {
     worker_connections 1024;
@@ -9,12 +8,18 @@ http {
     include mime.types; 
     default_type application/octet-stream;
 
+    log_format main_with_time '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" $request_time';  
+
     lua_package_path "/usr/local/openresty/lualib/?.lua;;";
     lua_shared_dict file_check_cache 10m;
 
     server {
         listen 8080;
         server_name localhost;
+	access_log logs/access.log main_with_time;
+        error_log logs/error.log main_with_time warn;
 
         # 静态资源根目录
         set $root_path "/var/www/html";
@@ -35,7 +40,7 @@ http {
                 local max_retries = 10 -- 重试次数（含首次检查）
                 local retry_delay = 1 -- 重试延迟（秒）
 
-                ngx.log(ngx.WARN, "AFA request filpath: ", filepath, "filename: ",filename)
+                ngx.log(ngx.WARN, "AFA request filpath: ", filepath, " filename: ",filename)
                 local mime_types = {
                     ["html"] = "text/html",
                     ["css"]  = "text/css",