I tried to connect to MongoDB replicaSet via mongoose. I used this link.
Configuration json:
"mongoose": {
"uri": "mongodb://localhost:27022/chat,localhost:27021,localhost:27020",
"options": {
"replset": { "rs_name": "rs0" },
"server": {
"poolSize": 3,
"socketOptions": {
"keepAlive": 1
}
}
}
}
Mongoose connect:
var mongoose = require('mongoose');
mongoose.connect(config.get('mongoose:uri'), config.get('mongoose:options'));
And after launching application i got exception:
Error: host must be specified [undefined]
at new exports.ConnectionPool (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\mongodb\lib\mongodb\connection\connection_pool.js:18:11)
at Server.connect (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\mongodb\lib\mongodb\connection\server.js:335:25)
at Db.open (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\mongodb\lib\mongodb\db.js:264:23)
at MongoStore._open_database (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect-mongo\lib\connect-mongo.js:174:15)
at MongoStore._get_collection (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect-mongo\lib\connect-mongo.js:169:14)
at MongoStore.get (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect-mongo\lib\connect-mongo.js:213:10)
at Object.session [as handle] (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect\node_modules\express-session\index.js:215:11)
at next (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect\lib\proto.js:194:15)
at Object.module.exports [as handle] (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\middleware\resExtensions.js:21:2)
at next (c:\Users\lor1an\Downloads\prj_chat-master\prj_chat-master\node_modules\connect\lib\proto.js:194:15)
Db: chat, primary server: localhost:27022.
Also I tried remove two other servers (keeping only the primary one in config json) and I saw that it knows about the secondary servers (I used log). I think it's about mongodb meta-data. But when I shutdown primary one, it finished its work (no wonder), I need it so it can use the secondary one instead.
Any ideas?
We use this:
if(config.db.indexOf('replicaSet') > - 1) {
dbOptions = {
db: {native_parser: true},
replset: {
auto_reconnect:false,
poolSize: 10,
socketOptions: {
keepAlive: 1000,
connectTimeoutMS: 30000
}
},
server: {
poolSize: 5,
socketOptions: {
keepAlive: 1000,
connectTimeoutMS: 30000
}
}
};
}
var db = mongoose.connect(config.db, dbOptions);
where
config.db = 'mongodb://USER:PW@host1:port1,host2:port2/DBNAME?replicaSet=RSNAME'
Auto_reconnect is off as per https://team.goodeggs.com/reconnecting-to-mongodb-when-mongoose-connect-fails-at-startup-83ca8496ca02