ngx_lua_metrics

lua script to emit metrics info to tsdb server

从nginx中发送nginx metrics信息到tsdb。主要依赖： 1、ngx_lua: http://wiki.nginx.org/HttpLuaModule 2、cmsgpack: https://github.com/antirez/lua-cmsgpack 3、luasocket: http://w3.impa.br/~diego/software/luasocket/

使用方法： 1、安装依赖 2、nginx配置： lua_package_path "/some/path/to/ngx_lua_metrics/?.lua;;"; lua_package_cpath "/some/path/to/ngx_lua_metrics/?.so;;";

init_by_lua "
    metrics = require 'metrics'
    local conf = {}
    conf.metrics_namespace_prefix = 'prefix.name'
    conf.host = '127.0.0.1'
    conf.port = 5005
    metrics.init(conf)
";

log_by_lua " local tagkv = {} tagkv.host = ngx.var.hostname tagkv.client = ngx.var.remote_addr metrics.emit_counter(tostring(ngx.var.status), 1, nil, tagkv) metrics.emit_timer('latency', ngx.var.request_time, nil, tagkv) ";

因为ngx.socket.udp不能在log_by_lua这个context下使用，所以使用了luasocket。