I'm trying to set up the MongoDB auto reconnection feature via Mongoose. Every way that I have tried to pass the option has had no effect, or at least the reconnected
event isn't being emitted.
What I've tried:
mongoose.createConnection("mongodb://localhost:27017/test", { auto_reconnect: true });
mongoose.createConnection("mongodb://localhost:27017/test", { autoReconnect: true });
mongoose.createConnection("mongodb://localhost:27017/test", { server: { auto_reconnect: true } });
mongoose.createConnection("mongodb://localhost:27017/test", { server: { autoReconnect: true } });
If one of these is correct, the reconnected
event should be triggered and a message should be logged in the console, however this never happens.
If there is a delay before the reconnection, does anyone know how to configure it?
Thanks in advance
For anyone looking into this, take a look at this and this issue in mongoose repository.
I had the same question as you, and robertklep's solution didn't work for me either. I found when MongoDB service is stopped, an error event is triggered, but the connection.readyState is still 1 (connected). That may be why it didn't auto reconnect.
This is what I have now:
var db = mongoose.connection;
db.on('connecting', function() {
console.log('connecting to MongoDB...');
});
db.on('error', function(error) {
console.error('Error in MongoDb connection: ' + error);
mongoose.disconnect();
});
db.on('connected', function() {
console.log('MongoDB connected!');
});
db.once('open', function() {
console.log('MongoDB connection opened!');
});
db.on('reconnected', function () {
console.log('MongoDB reconnected!');
});
db.on('disconnected', function() {
console.log('MongoDB disconnected!');
mongoose.connect(dbURI, {server:{auto_reconnect:true}});
});
mongoose.connect(dbURI, {server:{auto_reconnect:true}});