Nginx配置TCP请求转发+http请求转发+keepalived高可用
http://nginx.org/download/
1.TCP请求转发基于stream在1.9版本前，需要单独编译安装该组建:

依赖服务

[root@baolin conf]#yum -y install pcre-devel openssl openssl-devel library

wget http://nginx.org/download/nginx-1.9.5.tar.gz
tar -xf nginx-1.9.5.tar.gz -C /usr/local/
cd /usr/local/nginx-1.9.5/

编译安装 stream 组建

./configure --prefix=/usr/local/nginx/ --with-http_stub_status_module --with-http_ssl_module --with-stream ?--with-stream_ssl_module
make && make install
vim /etc/profile.d/nginx.sh
export PATH=/usr/local/nginx/sbin:$PATH
source /etc/profile.d/nginx.sh
nginx ???启动。

2、创建conf文件存放目录：
mkdir /usr/local/nginx/conf/conf.d/

3、配置
01、nginx.conf
vim /usr/local/nginx/conf/nginx.conf
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /usr/local/nginx/logs/nginx.pid;
include /usr/local/nginx/conf/conf.d/.conf;
events {
worker_connections 25600; ?#最大连接数
use epoll; ?#指明并发连接请求的处理方法
accept_mutex on; #处理新的连接请求的方法;on意味着由worker轮流处理新请求，
#并发总数是 worker_processes 和 worker_connections 的乘积
#即 max_clients = worker_processes worker_connections
#在设置了反向代理的情况下，max_clients = worker_processes worker_connections / 4 ?为什么
#为什么上面反向代理要除以4，应该说是一个经验值
#根据以上条件，正常情况下的Nginx Server可以应付的最大连接数为：4 8000 = 32000
#worker_connections 值的设置跟物理内存大小有关
#因为并发受IO约束，max_clients的值须小于系统可以打开的最大文件数
#而系统可以打开的最大文件数和内存大小成正比，一般1GB内存的机器上可以打开的文件数大约是10万左右
#我们来看看360M内存的VPS可以打开的文件句柄数是多少：
#$ cat /proc/sys/fs/file-max
#输出 34336
#32000 < 34336，即并发连接总数小于系统可以打开的文件句柄总数，这样就在操作系统可以承受的范围之内
#所以，worker_connections 的值需根据 worker_processes 进程数目和系统可以打开的最大文件总数进行适当地进行设置
#使得并发总数小于操作系统可以打开的最大文件数目
#其实质也就是根据主机的物理CPU和内存进行配置
#当然，理论上的并发总数可能会和实际有所偏差，因为主机还有其他的工作进程需要消耗系统资源。

ulimit -SHn 65535;

 ???????} ???02、vim /usr/local/nginx/conf/conf.d/yewu.conf ???????http { ???????????log_format ?main ?‘ "$http_x_forwarded_for" | [$time_local] | $host | ?$remote_addr | ?$request | $request_time | ?$body_bytes_sent ?| ?$status |‘ ?????????????????????????????????????????‘| $upstream_addr | $upstream_response_time ?| ?$upstream_status ?|‘ ?????????????????????????????????????????‘ "$http_referer" ?| "$http_user_agent" ‘; ????????????access_log ?/var/log/nginx/access.log ?main; ???????????charset utf-8; ???????????sendfile ???????????on; ???????????tcp_nopush ?????????on; ???????????tcp_nodelay ????????on; ???????????keepalive_timeout ??65; ???????????types_hash_max_size 2048; ???????????default_type ???????application/octet-stream; ???????????server { ???????????????listen 80; ???????????????root /data/nginx; ???????????????index index.html index.htm *.html index.jsp; ???????????????location ^~ /configCenter-vals/ { ???????????????????proxy_pass http://192.168.1.141:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /configCenter/ { ???????????????????proxy_pass http://192.168.1.139:8082; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /dubbo_admin/ { ???????????????????proxy_pass http://192.168.1.139:8082; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /appserver/ { ???????????????????proxy_pass http://192.168.1.160:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /asserver/ { ???????????????????proxy_pass http://192.168.1.161:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /idsoserver/ { ???????????????????proxy_pass http://192.168.1.161:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /vals-ap/ { ???????????????????proxy_pass http://192.168.1.142:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /eidboss/ { ???????????????????proxy_pass https://192.168.1.145:8080; ???????????????????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 Via "nginx"; ???????????????} ???????????????location ^~ /asboss/ { ???????????????????proxy_pass http://192.168.1.145:8081; ???????????????????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 Via "nginx"; ???????????????} ???????????} ???????} ???03、vim /usr/local/nginx/conf/conf.d/eid.conf ???????stream { ???????????upstream eid_device { ???????????????server 192.168.1.12:8008 max_fails=1 fail_timeout=1s weight=1; ???????????????server 192.168.1.12:8008 max_fails=1 fail_timeout=1s weight=1; ???????????} ???????????server { ???????????????listen ?8008; ???????????????proxy_pass ?eid_device; ???????????} ???????}

4、keepalived高可用配置
01、master配置
vim /etc/keepalived/keepalived.conf
global_defs {
notification_email {xxx@.com
br/>xxx@.com

 ??????notification_email_from xxx@.com ??????smtp_server smtp.exmail.qq.com ??????smtp_connect_timeout 30 ??????router_id nginx-master ???} ???vrrp_script chk_httpd { ????????script "/etc/keepalived/check_and_start_httpd.sh" ????????interval 2 ????????weight -10 ????????????fall 3 ????????????rise 2 ???} ???vrrp_instance VI_1 { ???????nopreempt ???????state MASTER ???????interface eth1 ???????virtual_router_id 66 ???????priority 100 ???????advert_int 1 ???????authentication { ???????????auth_type PASS ???????????auth_pass 1111 ???????} ???????virtual_ipaddress { ???????????192.168.1.8/32 dev eth1 label eth1:0 ???????????192.168.1.9/32 dev eth1 label eth1:1 ???????} ???track_script { ???????????????# 引用VRRP脚本，即在 vrrp_script 部分指定的名字。定期运行它们来改变优先级，并最终引发主备切换。 ???????chk_httpd ???????} ???????????????????}02、backup配置 ???vim /etc/keepalived/keepalived.conf ???global_defs { ??????notification_email { ???????????????xxx@.com ??????} ??????notification_email_from xxx@.com ??????smtp_server smtp.exmail.qq.com ??????smtp_connect_timeout 30 ??????router_id nginx-backup ???} ???vrrp_script chk_httpd { ????????script "/etc/keepalived/check_and_start_httpd.sh" ????????interval 2 ????????weight -10 ????????????fall 3 ????????????rise 2 ???} ???vrrp_instance VI_1 { ???# ???nopreempt ???????state BACKUP ???????interface eth1 ???????virtual_router_id 66 ???????priority 95 ???????advert_int 1 ???????authentication { ???????????auth_type PASS ???????????auth_pass 1111 ???????} ???????virtual_ipaddress { ???????????192.168.1.8/32 dev eth1 label eth1:0 ???????????192.168.1.9/32 dev eth1 label eth1:1 ???????} ???track_script { ???????????????# 引用VRRP脚本，即在 vrrp_script 部分指定的名字。定期运行它们来改变优先级，并最终引发主备切换。 ???????chk_httpd ???????} ???????????????????}03、脚本：vim /etc/keepalived/check_and_start_httpd.sh ???#!/bin/bash ???counter=$(ps -C nginx --no-heading|wc -l) ???if [ "${counter}" = "0" ]; then ???????ps -ef | grep nginx | grep -v grep | awk ‘{print $2}‘ ?| sed -e "s/^/kill -9 /g" | sh - ??#/usr/local/bin/nginx ?此为nginx启动方式。 ???????nginx ???????sleep 2 ???????counter=$(ps -C nginx --no-heading|wc -l) ??????????if [ "${counter}" = "0" ]; then ???????systemctl stop keepalived ???????echo -e "$ip of nginx is stop ,nginx service switch nginx slave ?\nlocal is virtual ip : ??$virtual_ip ???not exist " |mail -s "$ip of nginx is stop" xxx@.com ???????fi ???fi04、邮箱配置： ???yum -y install mailx ???yum install -y sendmail ???yum install -y sendmail-cf ???yum -y install bc ???echo "TRUST_AUTH_MECH(‘EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN‘)dnl" >> /etc/mail/sendmail.mc ???echo "define(‘confAUTH_MECHANISMS‘, ‘EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN‘)dnl" >> /etc/mail/sendmail.mc ???sed -i s#127.0.0.1#0.0.0.0#g /etc/mail/sendmail.mc ???grep "OPTIONS" /etc/mail/sendmail.mc ???m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf ???echo ‘set from=xxx@.com‘ >> /etc/mail.rc ???echo ‘set smtp=smtp.exmail.qq.com‘ >> /etc/mail.rc ???echo ‘set smtp-auth-user=xxx@.com‘ >> /etc/mail.rc ???echo ‘set smtp-auth-password=xxxx‘ >> /etc/mail.rc ???echo ‘set smtp-auth=login‘ >> /etc/mail.rc ???IP1=$(ifconfig|grep ‘192.168‘|awk ‘{print $2}‘) ???IP2=$(ifconfig|grep ‘10.10‘|awk ‘{print $2}‘) ???abc="abc.mail.com" ???echo "$IP2 `hostname` $abc" >> /etc/hosts ???systemctl enable sendmail ???systemctl start sendmail ???systemctl status sendmail

Nginx配置TCP转发+http转发+keepalived高可用

原文地址：http://blog.51cto.com/8248183/2327382