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Zuul for Nginx&Lua
基于Nginx和Lua module。需要安装Nginx Lua模块或者直接下载openresty编译安装。
安装和配置ngx-lua-zuul
下载代码到/path/to/nginx/lua/lib/
git clone http://github.com/tietang/ngx-lua-zuul --depth=1
配置nginx.conf
从nginx.conf.default 复制nginx.conf,也可以copy下面的例子并保存为nginx.conf,以快速运行。
在nginx.conf的http节点中添加:
lua_package_path "/Users/tietang/nginx/nginx/lua/lib/?.lua;;"; lua_shared_dict discovery 10m; lua_shared_dict apps_count 1m; lua_shared_dict apps_res_time 10m; lua_shared_dict api_count 10m; lua_shared_dict api_res_time 10m; init_by_lua ' discovery = require "discovery" json=require "cjson" balancer=require "robin" router = require "router" '; init_worker_by_lua ' discovery:schedule() ';
location 中添加:
location / { set $bk_host ''; # default_type text/html;
access_by_lua_file lua/lib/app_route.lua;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://$bk_host;
log_by_lua_file lua/lib/stats.lua; #
}下面是一个完整的例子:
#user nobody;worker_processes 2;#error_log logs/error.log;#error_log logs/error.log notice;#error_log logs/error.log info;#pid logs/nginx.pid;events {
worker_connections 1024;
}
http {
include mime.types;
default_type application/octet-stream; #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 logs/access.log main;
sendfile on; #tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65; #gzip on;
##lua 代码路径
lua_package_path "/Users/tietang/nginx/nginx/lua/lib/?.lua;;"; ##一些共享缓存
lua_shared_dict discovery 10m;
lua_shared_dict apps_count 1m;
lua_shared_dict apps_res_time 10m;
lua_shared_dict api_count 10m;
lua_shared_dict api_res_time 10m;
lua_shared_dict metrics 10m;
lua_shared_dict metrics_time 10m; ##初始化
init_by_lua '
discovery = require "discovery"
json=require "cjson"
balancer=require "robin"
router = require "router"
'; ## 初始化定时器
init_worker_by_lua '
discovery:schedule()
';
server {
listen 8000;
server_name localhost; #charset koi8-r;
#access_log logs/host.access.log main;
location = / { set $dir $document_root;
root $dir/html;
index index.html index.htm;
} # Dashboard路径
location ^~ /_dashboard { set $dir "./html"; # root $dir/html/;
alias $dir;
index index.html index.htm;
} # 静态文件路径
location ^~ /public/ { set $dir "./html/public/"; alias $dir;
} # 一些管理功能-例子统计
location = /_admin/stats {
default_type text/html;
content_by_lua_file lua/lib/stats_show.lua;
}
location = /_admin/stats.json {
default_type application/json;
content_by_lua_file lua/lib/stats_show_json.lua;
}
location = /_admin/data.json {
default_type application/json;
content_by_lua '
local v={}
v.date=ngx.now()*1000
-- string.gsub(ngx.localtime()," ",":")
v.close=math.random(2,100)
ngx.say( json.encode(v))
';
}
location = /_admin/data.tsv {
default_type application/json;
content_by_lua '
ngx.say("date close")
ngx.say(string.gsub(ngx.localtime()," ",":") .. " ".. math.random(20,600) )
';
} ## 请求转发处理
location / { set $bk_host ''; # default_type text/html;
# 路由计算
access_by_lua_file lua/lib/app_route.lua;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://$bk_host; # 简单统计收集
log_by_lua_file lua/lib/stats.lua; #
} #用于调试的例子
location = /haha {
default_type application/json; # access_by_lua_file demo/demo.lua;
content_by_lua '
ngx.say(ngx.var.host)
ngx.say(ngx.time())
ngx.say(ngx.now())
ngx.say( json.encode(router.routingTable) .."<br/>")
ngx.say( "<br/>")
ngx.say(json.encode(discovery.hosts ) .."<br/>")
'; #
} #error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
} # proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
} # another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# location / {
# root html;
# index index.html index.htm;
# }
#}
# HTTPS server
#
#server {
# listen 443 ssl;
# server_name localhost;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}}例子Eureka 服务
如果没有Eureka环境,也可以编译安装本例子中的EurekaDemo服务
运行测试
启动所有的demo服务:discovery,api,zuul;
启动nginx;
作者:铁汤
链接:https://www.jianshu.com/p/80646d27856b
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