Major - P3 Since in 3.4, balancer runs on primary of CSRS and the lock document is:
db.locks.findOne( {_id: "balancer"})
{
"_id" : "balancer",
"state" : 2,
"ts" : ObjectId("581178035b3b7dcb772022cd"),
"who" : "ConfigServer:Balancer",
"process" : "ConfigServer",
"when" : ISODate("2016-10-27T03:44:03.007Z"),
"why" : "CSRS Balancer"
}
The sh.getBalancerHost() method needs to be updated since it still expects the hostname for the mongos:
function (configDB) {
if (configDB === undefined)
configDB = sh._getConfigDB();
var x = configDB.locks.findOne({_id: "balancer"});
if (x == null) {
print(
"config.locks collection does not contain balancer lock. be sure you
are connected to a mongos");
return "";
}
return x.process.match(/[^:]+:[^:]+/)[0];
}