openresty配置部署

迷南。 2023-01-08 03:25 120阅读 0赞

环境：centos

yum install -y readline-devel pcre-devel openssl-devel gcc
    yum install -y g++ make automake autoconf
    
    ./configure --prefix=/usr/local/openresty \
        --with-luajit
        --with-http_iconv_module \
        --with-http_stub_status_module
    
    gmake ; gmake install
    
    groupadd -f www
    useradd -r -s /sbin/nologin -g www www

## openresty配置 ##

### 反向代理配置实例 ###

user www www;
    worker_processes 1;
    
    error_log logs/error.log info;
    pid    logs/nginx.pid;
    
    events {
        worker_connections 3000;
    }
    
    http {
        include mime.types;
        sendfile  on;
    
        keepalive_timeout 65;
        gzip on;
    
        server {
            listen  80;
            
            location / {
                proxy_pass https://github.com;
                proxy_redirect  off;
                proxy_set_header Host $host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            }
    
            location /README.md {
                proxy_pass https://github.com/moonbingbing/openresty-best-practices/blob/master/README.md
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwared_for;
            }
        }
    }

**/lb\_health\_check**配置

location = /lb_health_check {
        add_header Content-Type "text/plain; charset=utf-8";
        return 200;
        access_log off;
    }

favicon.ico配置

location = /favicon.ico {
        log_not_found on;
        access_log off;
    }

### 重启 ###

nginx -s reload
    nginx -t -c /path/to/nginx.conf
    nginx -s stop

压力测试 yum -y install httpd-tools

### lua扩展 ###

获取**POST**请求配置

# vim conf/nginx.conf
    log_format main '$remote_addr | $remote_user | [$time_local] | "$request" | '
                    '$status | $body_bytes_sent | "$http_referer" | '
                    '"$http_user_agent" | "$http_x_forwarded_for" | "$request_body" | "$resp_body"';
    
    # vim vhost/http.conf
    server {
        listen 80;
    
        set $resp_body "";
        include vhost/loc/yun_location.conf;
    }
    
    # vim vhost/loc/yun_location.conf
    location = /lb_health_check {
        add_header Content-Type "text/plain; charset=utf-8";
        return 200;
        access_log off;
    }
    
    location = /favicon.ico {
        log_not_found on;
        access_log off;
    }
    
    location /api {
        lua_need_request_body on;
        body_filter_by_lua '
            local resp_body = string.sub(ngx.arg[1], 1, 1000)
            ngx.ctx.buffered = (ngx.ctx.buffered or "") .. resp_body
            if ngx.arg[2] then
                ngx.var.resp_body = ngx.ctx.buffered
            end
        ';
        proxy_pass http: //yun_backend;
    }

接收请求配置

# nginx.conf
    location ~ /lua_request/(\d+)/(\d+) {
        set $a $1;
        set $b $host;
        default_type "application/json";
        content_by_lua_file conf/lua/lua_request.lua
        echo_after_body "ngx.var.b $b";
    }
    
    # 获取变量
    local variable = ngx.var;
    ngx.say("ngx.var.a: ", variable.a);   -- set $a $1;
    ngx.say("ngx.var.b: ", variable.b);   -- set $b $host;
    
    ngx.say("ngx.var[1]: ", variable[1]);
    ngx.say("ngx.var[2]: ", variable[2]);
    
    # 获取头
    local headers = ngx.req.get_headers();
    ngx.say("Host: ", headers["Host"]);
    ngx.say("user-agent: ", headers["user-agent"]);
    ngx.say("user-agent: ", headers.user_agent);
    
    ngx.say("ngx.req.http_version: ", ngx.req.http_version());
    ngx.say("ngx.req.get_method: ", ngx.req.get_method());
    ngx.say("ngx.req.raw_header: ",  ngx.req.raw_header()); -- 未解析的请求头字符串
    
    for k, v in pairs(headers) do
        ngx.say(k, ": ", v);
    end
    
    # 获取get请求
    local get_argument = ngx.req.get_uri_args();
    for k, v in pairs(get_argument) do
        ngx.say(k, ": ", v);
    end
    
    # 获取post请求
    ngx.req.read_body();
    local post_argument = ngx.req.get_post_args();
    for k, v in pairs(post_argument) do
        ngx.say(k, ": ", v);
    end
    
    ngx.say("ngx.req.get_body_data(): ", ngx.req.get_body_data());  -- 解析的请求body体内容字符串

输出响应

# nginx.conf
    location ~ /lua_response {
        default_type "application/json";
        content_by_lua_file conf/lua/lua_response.lua;
    }
    
    # 响应设置
    ngx.header.a = "1"          -- 写响应头
    ngx.header.b = {"2", "3"}   -- 写多个响应头
    ngx.say("")                 -- 响应内容体
    ngx.print("")               -- 同上, 多输出换行符
    ngx.exit(200)               -- 指定状态码退出
    
    ngx.status = 200
    ngx.resp.get_headers()
    ngx.send_headers()
    
    # 编码解码
    local request_uri = ngx.var.request_uri;    -- 未经解码的请求uri
    ngx.say("unescape_uri: ", ngx.unescape_uri(request_uri));
    ngx.say("md5: ", ngx.md5("hello, world"));
    ngx.say("time: ", ngx.http_time(ngx.time()));
    
    ngx.escape_uri/ngx.unescape_uri     -- uri编码解码
    ngx.encode_args/ngx.decode_args     -- 参数编码解码
    ngx.encode_base64/ngx.decode_base64 -- base64编码解码
    ngx.re.match                        -- 正则表达式匹配
    
    ## 全局内存
    # nginx.conf
    lua_shared_dict shared_data 1m;
    
    location /lua_shared_dict {
        default_type "application/json";
        content_by_lua_file conf/lua/lua_shared_dict.lua;
    }
    
    # 获取全局共享的内存变量
    local shared_data = ngx.shared.shared_data;
    
    local i = shared_data:get("i")
    if not i then
        i = 100;
        shared_data:set("i", i);
    end
    
    i = shared_data:incr("i", 1);
    ngx.say("i = ", i);
    
    ## 处理流程
    init_by_lua, init_by_lua_file
    init_worker_by_lua, init_worker_by_lua_file
    set_by_lua, set_by_lua_file
    rewrite_by_lua, rewrite_by_lua_file
    access_by_lua, access_by_lua_file
    content_by_lua, content_by_lua_file
    header_filter_by_lua, header_filter_by_lua_file
    body_filter_by_lua, body_filter_by_lua_file
    log_by_lua, log_by_lua_file
    
    ## 引入模块
    # nginx.conf
    lua_package_path "/usr/local/openresty/lualib/?.lua;;";  -- lua模块, ”;;”表示默认搜索路径
    lua_package_cpath "/usr/local/openresty/lualib/?.so;;";  -- c模块
    
    local cjson = require(“cjson”)
    local redis = require(“resty.redis”)