Nginx+lua+mysql实时存日志

tar -zxf LuaJIT-2.0.5.tar.gz
  cd LuaJIT-2.0.5
  make
  make install PREFIX=/home/myself/lj2
 

  tar -zxvf pcre-8.32.tar.gz
  cd pcre-8.32
  make
  make install 

export LUAJIT_LIB=/path/to/luajit/lib   
export LUAJIT_INC=/path/to/luajit/include/luajit-2.1   
./configure --prefix=/opt/nginx \        
--with-ld-opt="-Wl,-rpath,/path/to/luajit-or-lua/lib" \        
--add-module=/path/to/ngx_devel_kit \        
--add-module=/path/to/lua-nginx-module   
make   
make install
 

user  root;
worker_processes  2;

events {
worker_connections  1024;
}


http{
lua_package_path "/home/oicq/guomm/nginx_lua/lua-resty-mysql-master/lib/?.lua;;"; 
lua_shared_dict logs 10m;
#初始化worker进程，在这个进程中递归调用put_log_into_mysql函数，达到一种类似于crontab的功能
init_worker_by_lua_block {
    local delay = 10
    function put_log_into_mysql(premature)      
            local mysql = require "resty.mysql"
            local db, err = mysql:new()
            if not db then
                ngx.log(ngx.ERR,"failed to instantiate mysql: ", err)
                return
            end

            db:set_timeout(1000)
            local ok, err, errcode, sqlstate = db:connect{
                host = "xxx",
                port = 3306,
                database = "database_name",
                user = "username",
                password = "password",
                charset = "utf8",
            }

            if not ok then
                ngx.log(ngx.ERR,"failed to connect: ", err, ": ", errcode, " ", sqlstate)
                return
            end

            -- get data from shared dict and put them into mysql 从共享内存中读取出10s的日志，写入mysql
            local key = "logs"
            local vals = ""
            local temp_val = ngx.shared.logs:lpop(key)
            while (temp_val ~= nil)
            do
                vals = vals .. ",".. temp_val
                temp_val = ngx.shared.logs:lpop(key)
            end

            if vals ~= "" then
                vals = string.sub(vals, 2,-1)
                local command = ("insert into es_visit_record(access_ip,server_ip,access_time,run_time,es_response_time,request_body_byte,run_state,url,post_data) values "..vals)
                ngx.log(ngx.ERR,"command is ",command)
                local res, err, errcode, sqlstate = db:query(command)
                if not res then
                    ngx.log(ngx.ERR,"insert error: ", err, ": ", errcode, ": ", sqlstate, ".")
                    return
                end
            end

            local ok, err = db:close()
            if not ok then
                ngx.log(ngx.ERR,"failed to close: ", err)
                return
            end
            -- decycle call timer to run put_log_into_mysql method, just like crontab
            local ok, err = ngx.timer.at(delay, put_log_into_mysql);
            if not ok then
                ngx.log(ngx.ERR, "failed to create timer: ", err)
                return
            end
    end
    
    local ok, err = ngx.timer.at(delay, put_log_into_mysql)
    if not ok then
        ngx.log(ngx.ERR, "failed to create timer: ", err)
        return
    end
}


upstream elasticsearch_servers {
    server xxx max_fails=3 fail_timeout=30s;
    server xxx max_fails=3 fail_timeout=30s;
    server xx max_fails=3 fail_timeout=30s;
}

log_format  porxy  '$remote_addr,$upstream_addr,[$time_local],$request,$request_body,$status,$body_bytes_sent,$request_time,$upstream_response_time';

server {
    listen 9202;
    location / {
        
        proxy_pass http://elasticsearch_servers;
        #在log_by_lua_block中将日志存入Nginx共享内存
        log_by_lua_block{

            local currentTime = os.date("%Y-%m-%d %H:%M:%S", os.time())
            currentTime = "\"" .. currentTime .. "\""
            
            local req_body = '-'
            if ngx.var.request_body then
                req_body = ngx.var.request_body
                req_body = string.gsub(req_body,"\n","")
                --req_body = string.gsub(req_body,"\t","")
            end
            req_body = "\"" .. req_body .. "\""

            local req_status = 0
            if ngx.var.status then
                req_status = ngx.var.status
            end

            local req_time = 0
            if ngx.var.request_time then
                req_time = ngx.var.request_time
            end
            
            local req_req = "\"" .. ngx.var.request .. "\""
            local remote_addr = "\"" .. ngx.var.http_x_forwarded_for .. "\""
            local server_addr = "\"" .. ngx.var.upstream_addr .. "\""
            local myparams = ("("..remote_addr..",".. server_addr..","..currentTime..","..ngx.var.request_time .. ",".. ngx.var.upstream_response_time..","..ngx.var.body_bytes_sent..","..ngx.var.status..","..req_req..","..req_body..")")
            local key = "logs"
            local len,err = ngx.shared.logs:rpush(key, myparams)
            
            if err then
                ngx.log(ngx.ERR,"failed to put log vals into shared dict")
                return
            end
            
        }
    }
    access_log logs/es_access.log porxy;
}
}

GRANT ALL PRIVILEGES ON *.* to root@xxx IDENTIFIED BY 'password';