nginx，tomcat发布第一次访问不到问题
导致第一次空白页面,要么是超时，要么是http的头过大，nignx文件连接数过小
tomcat
maxHttpHeaderSize="102400"
严重: Error processing request
org.apache.coyote.http11.HeadersTooLargeException: An attempt was made to write more data to the response headers than there was room available in the buffer. Increase maxHttpHeaderSize on the connector or write less data into the response headers.
at org.apache.coyote.http11.AbstractOutputBuffer.checkLengthBeforeWrite(AbstractOutputBuffer.java:547)
nginx日志信息：
upstream sent too big header while reading response header from upstream
# For more information on configuration, see:
# * Official English Documentation: http://nginx.org/en/docs/
# * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;
events {
worker_connections 65535;
}
http {
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;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_header_buffer_size 128k;
large_client_header_buffers 4 128k;
client_max_body_size 20m;
client_body_buffer_size 10m;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 128k;
proxy_buffers 32 32k;
proxy_busy_buffers_size 128k;
proxy_temp_file_write_size 128k;
# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;
#server {
#listen 80 default_server;
#listen [::]:80 default_server;
#server_name _;
#root /usr/share/nginx/html;
# Load configuration files for the default server block.
#include /etc/nginx/default.d/*.conf;
#location / {
#}
#error_page 404 /404.html;
# location = /40x.html {
#}
#error_page 500 502 503 504 /50x.html;
# location = /50x.html {
#}
#}
# Settings for a TLS enabled server.
#
# server {
# listen 443 ssl http2 default_server;
# listen [::]:443 ssl http2 default_server;
# server_name _;
# root /usr/share/nginx/html;
#
# ssl_certificate "/etc/pki/nginx/server.crt";
# ssl_certificate_key "/etc/pki/nginx/private/server.key";
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 10m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
#
# # Load configuration files for the default server block.
# include /etc/nginx/default.d/*.conf;
#
# location / {
# }
#
# error_page 404 /404.html;
# location = /40x.html {
# }
#
# error_page 500 502 503 504 /50x.html;
# location = /50x.html {
# }
# }
}
参考：
这个
http://blog.csdn.net/haitun312366/article/details/12647237
nginx 502 Bad Gateway 错误解决办法
http://jingyan.baidu.com/article/eb9f7b6dacaac3869364e88f.html