【发布时间】：2015-02-15 12:43:49
【问题描述】：
我的 express web 应用使用 Winston 进行日志记录，并且使用 winston-mongodb 将日志保存到 mongolab 托管的 mongoDB（副本集）。
这几天一切正常，然后当流量增加一点时，日志就停止保存/连接到数据库。不幸的是，这意味着我没有日志可以检查出了什么问题——这是一个令人沮丧的情况。其他一切仍然正常 - 其他集合（如用户）正在正确保存和更新，服务器已启动。
我尝试重新部署/重新启动服务器无济于事，日志不会再次开始记录。我怀疑我的服务器/记录器设置存在一些细微的问题，可能是与数据库连接相关的竞争条件，但我现在真的迷路了。代码如下：
//server.js (simplified required modules - only ones possibly relevant to question)
var express = require( 'express' );
var session = require('express-session');
var methodOverride = require('method-override');
var cookieParser = require('cookie-parser');
var mongoose = require( 'mongoose' );
var uriUtil = require('mongodb-uri');
var config = require('config');
var bodyParser = require('body-parser');
var MongoStore = require('connect-mongostore')(session);
var logger = require('./logs/logger.js');
// DATABASE CONNECT
var options = { server: { socketOptions: { keepAlive: 1, connectTimeoutMS: 30000 } },
replset: { socketOptions: { keepAlive: 1, connectTimeoutMS : 30000 } } };
var mongodbUri = "mongodb://<user>:<pw>@ds012345-a0.mongolab.com:12345,ds012345-a1.mongolab.com:12345/<db>"
//use mongo-uri to make sure url is in the correct format
var mongooseUri = uriUtil.formatMongoose(mongodbUri);
mongoose.connect(mongooseUri, options);
var conn = mongoose.connection;
// __Create server__
var app = express();
conn.on('open', function(e) {
var sessionStore = new MongoStore({ mongooseConnection: mongoose.connections[0] });
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(methodOverride());
app.use(cookieParser());
app.use(session({
store: sessionStore,
secret: config.session.secret,
cookie: {
maxAge: config.session.maxage,
httpOnly: true,
secure: false
//If I set 'secure:true', it prevents the session from working properly.
},
saveUninitialized: true,
resave: true
}));
app.use(passport.initialize());
app.use(passport.session());
app.use( express.static( path.join( __dirname, 'site') ) );
//Routes
app.use('/api/forgot', controllers.forgotpw);
//etc.
});
conn.on('connected', function(){
//Start server
app.listen(config.port, function() {
logger.info( 'Express server listening on port %d in %s mode', config.port, app.settings.env );
logger.info(process.env.NODE_ENV);
});
});
//logger.js
var winston = require('winston');
var config = require('config');
require('winston-mongodb').MongoDB;
if (process.env.NODE_ENV == 'production') {
var winston = new (winston.Logger)({
transports: [
new (winston.transports.Console)({ level: 'warn' }),
new (winston.transports.MongoDB)({
//db : 'atlas_database',
level : 'debug',
//ssl : true,
dbUri : "mongodb://<user>:<pw>@ds012345-a0.mongolab.com:12345,ds012345-a1.mongolab.com:12345/<db>"
})
]
});
winston.info('Chill Winston, the logs are being captured with production settings');
}
module.exports = winston;
如果您对导致日志不再起作用的原因有任何想法，我们将不胜感激。
【问题讨论】：
标签： mongodb express mongoose mlab nodejitsu