yum -y install wget gcc-c++ ncurses ncurses-devel cmake make perl bison openssl openssl-devel gcc* libxml2 libxml2-devel curl-devel libjpeg* libpng* freetype* autoconf automake zlib* fiex* libxml* libmcrypt* libtool-ltdl-devel* libaio libaio-devel bzr libtool
wget https://www.openssl.org/source/openssl-1.0.2s.tar.gz
tar -zxvf openssl-1.0.2s.tar.gz
cd /usr/local/src/openssl-1.0.2s
./config --prefix=/usr/local/openssl-1.0.2s
make
make install
wget https://ftp.pcre.org/pub/pcre/pcre-8.43.tar.gz
tar -zxvf pcre-8.43.tar.gz
cd /usr/local/src/pcre-8.43
./configure --prefix=/usr/local/pcre-8.43
make
make install
wget https://sourceforge.net/projects/libpng/files/zlib/1.2.11/zlib-1.2.11.tar.gz
tar -zxvf zlib-1.2.11.tar.gz
cd /usr/local/src/zlib-1.2.11
./configure --prefix=/usr/local/zlib-1.2.11
make
make
wget http://nginx.org/download/nginx-1.17.2.tar.gz
tar -zxvf nginx-1.17.2.tar.gz
cd /usr/local/src/nginx-1.17.2
./configure --prefix=/usr/local/nginx-1.17.2 --with-openssl=/usr/local/src/openssl-1.0.2s --with-pcre=/usr/local/src/pcre-8.43 --with-zlib=/usr/local/src/zlib-1.2.11 --with-http_ssl_module
make
make install
这里需要注意的是:安装Nginx时,指定的是openssl、pcre和zlib的源码解压目录,安装完成后Nginx配置文件的完整路径为:
/usr/local/nginx-1.17.2/conf/nginx.conf。
http {
……
upstream real_server {
server 192.168.103.100:2001 weight=1; #轮询服务器和访问权重
server 192.168.103.100:2002 weight=2;
}
server {
listen 80;
location / {
proxy_pass http://real_server;
}
}
}
upstream real_server {
server 192.168.103.100:2001 weight=1 max_fails=2 fail_timeout=60s;
server 192.168.103.100:2002 weight=2 max_fails=2 fail_timeout=60s;
}
意思是在fail_timeout时间内失败了max_fails次请求后,则认为该上游服务器不可用,然后将该服务地址踢除掉。fail_timeout时间后会再次将该服务器加入存活列表,进行重试。
limit_req_zone指令设置参数
limit_req_zone $binary_remote_addr zone=mylimit:10m rate=10r/s;
location / {
limit_req zone=mylimit burst=20 nodelay;
proxy_pass http://real_server;
}
burst排队大小,nodelay不限制单个请求间的时间。
geo $limit {
default 1;
192.168.2.0/24 0;
}
map $limit $limit_key {
1 $binary_remote_addr;
0 "";
}
limit_req_zone $limit_key zone=mylimit:10m rate=1r/s;
location / {
limit_req zone=mylimit burst=1 nodelay;
proxy_pass http://real_server;
}
上述配置中,192.168.2.0/24网段的IP访问是不限流的,其他限流。
IP后面的数字含义:
静态资源缓存用expire
location ~* .(jpg|jpeg|png|gif|ico|css|js)$ {
expires 2d;
}
Response Header中添加了Expires和Cache-Control,
静态资源包括(一般缓存)
协商缓存(add_header ETag/Last-Modified value)
不需要缓存
//缓存路径,inactive表示缓存的时间,到期之后将会把缓存清理
proxy_cache_path /data/cache/nginx/ levels=1:2 keys_zone=cache:512m inactive = 1d max_size=8g;
location / {
location ~ .(htm|html)?$ {
proxy_cache cache;
proxy_cache_key $uri$is_args$args; //以此变量值做HASH,作为KEY
//HTTP响应首部可以看到X-Cache字段,内容可以有HIT,MISS,EXPIRES等等
add_header X-Cache $upstream_cache_status;
proxy_cache_valid 200 10m;
proxy_cache_valid any 1m;
proxy_pass http://real_server;
proxy_redirect off;
}
location ~ .*.(gif|jpg|jpeg|bmp|png|ico|txt|js|css)$ {
root /data/webApps/edc;
expires 3d;
add_header Static Nginx-Proxy;
}
}
在本地磁盘创建一个文件目录,根据设置,将请求的资源以K-V形式缓存在此目录当中,KEY需要自己定义(这里用的是url的hash值),同时可以根据需要指定某内容的缓存时长,比如状态码为200缓存10分钟,状态码为301,302的缓存5分钟,其他所有内容缓存1分钟等等。
可以通过purger的功能清理缓存。
AB测试/个性化需求时应禁用掉浏览器缓存。
location / {
deny 192.168.1.1;
deny 192.168.1.0/24;
allow 10.1.1.0/16;
allow 2001:0db8::/32;
deny all;
}
安装运行
yum install yum-utils
yum-config-manager --add-repo https://openresty.org/package/centos/openresty.repo
yum install openresty
yum install openresty-resty
查看
yum --disablerepo="*" --enablerepo="openresty" list available
运行
service openresty start
配置(
/usr/local/openresty/nginx/conf/nginx.conf)
lua_shared_dict ip_blacklist 1m;
server {
listen 80;
location / {
access_by_lua_file lua/ip_blacklist.lua;
proxy_pass http://real_server;
}
}
lua脚本(ip_blacklist.lua)
local redis_host = "192.168.1.132"
local redis_port = 6379
local redis_pwd = 123456
local redis_db = 2
-- connection timeout for redis in ms.
local redis_connection_timeout = 100
-- a set key for blacklist entries
local redis_key = "ip_blacklist"
-- cache lookups for this many seconds
local cache_ttl = 60
-- end configuration
local ip = ngx.var.remote_addr
local ip_blacklist = ngx.shared.ip_blacklist
local last_update_time = ip_blacklist:get("last_update_time");
-- update ip_blacklist from Redis every cache_ttl seconds:
if last_update_time == nil or last_update_time < ( ngx.now() - cache_ttl ) then
local redis = require "resty.redis";
local red = redis:new();
red:set_timeout(redis_connect_timeout);
local ok, err = red:connect(redis_host, redis_port);
if not ok then
ngx.log(ngx.ERR, "Redis connection error while connect: " .. err);
else
local ok, err = red:auth(redis_pwd)
if not ok then
ngx.log(ngx.ERR, "Redis password error while auth: " .. err);
else
local new_ip_blacklist, err = red:smembers(redis_key);
if err then
ngx.log(ngx.ERR, "Redis read error while retrieving ip_blacklist: " .. err);
else
ngx.log(ngx.ERR, "Get data success:" .. new_ip_blacklist)
-- replace the locally stored ip_blacklist with the updated values:
ip_blacklist:flush_all();
for index, banned_ip in ipairs(new_ip_blacklist) do
ip_blacklist:set(banned_ip, true);
end
-- update time
ip_blacklist:set("last_update_time", ngx.now());
end
end
end
end
if ip_blacklist:get(ip) then
ngx.log(ngx.ERR, "Banned IP detected and refused access: " .. ip);
return ngx.exit(ngx.HTTP_FORBIDDEN);
end
根据Cookie查询version值,如果该version值为v1转发到host1,为v2转发到host2,都不匹配的情况下转发到默认配置。
upstream host1 {
server 192.168.2.46:2001 weight=1; #轮询服务器和访问权重
server 192.168.2.46:2002 weight=2;
}
upstream host2 {
server 192.168.1.155:1111 max_fails=1 fail_timeout=60;
}
upstream default {
server 192.168.1.153:1111 max_fails=1 fail_timeout=60;
}
map $COOKIE_version $group {
~*v1$ host1;
~*v2$ host2;
default default;
}
lua_shared_dict ip_blacklist 1m;
server {
listen 80;
#set $group "default";
#if ($http_cookie ~* "version=v1"){
# set $group host1;
#}
#if ($http_cookie ~* "version=v2"){
# set $group host2;
#}
location / {
access_by_lua_file lua/ip_blacklist.lua;
proxy_pass http://$group;
}
}
server {
……………
set $group default;
if ($remote_addr ~ "192.168.119.1") {
set $group host1;
}
if ($remote_addr ~ "192.168.119.2") {
set $group host2;
}
参考:
https://github.com/sunshinelyz/ABTestingGateway