node.js - Simplest way to create a connection and execute a query on replicaset with mongoose? -

i'm trying execute specific query on replica set... without success.

what simplest way create connection , execute query on replicaset mongoose?

my code-1:

var mongoose = require('mongoose'); mongoose.connect('mongodb://user:pass@host:port/db,user:pass@host2:port/db');  var someschema = new mongoose.schema({...}, { read: 'secondary' }); var = mongoose.model('some', someschema);  some.find(...) -> err [error: not authorized query on bd.collection] 

my code-2:

mongoose.connect('mongodb://user:pass@host:port/db,user:pass@host2:port/db?slaveok=true'); some.find(...) -> err [error: not authorized query on bd.collection] 

my code-3:

mongoose.connect('mongodb://user:pass@host:port/db,mongodb://user:pass@host2:port/db?slaveok=true'); some.find(...) -> err [error: not authorized query on bd.collection] 

my code-4:

mongoose.connect('mongodb://user:pass@end:port/db,mongodb://user:pass@end2:port/db); some.find(...) -> err [error: not authorized query on bd.collection] 

my code-5:

mongoose.connect('mongodb://user:pass@end:port/db,mongodb://user:pass@end2:port/db?slaveok=true);  var someschema = new mongoose.schema({...}); var = mongoose.model('some', someschema);  some.find(...).slaveok() -> query executed on master (apparently) some.find(...).read('secondary') -> query executed on master (apparently - no change on mongostat of replicaset. i'm mongohq user , don't trust in mongostat dashboard.) 

so, if connect mongo hostreplica:port/db -u user -p pass, , exec db.getmongo().setslaveok(), can exec db.collection.find without problem.

what i'm doing wrong?

thanks

i followed this doc , works fine me. connection string mongoose looks this:

mongodb://user:pass@host1,user:pass@host2/db?replicaset=myreplica&readpreference=secondarypreferred 

i think slaveok deprecated, , should use readpreference option.

as use nodejs/mongoose read-only api, want read slave(s), , keep master insertions (which done outside of nodejs). that's why use secondarypreferred.