mongodb status of index creation job

At the mongo shell, type below command to see the current progress:

rs0:PRIMARY> db.currentOp(true).inprog.forEach(function(op){ if(op.msg!==undefined) print(op.msg) })

Index Build (background) Index Build (background): 1431577/55212209 2%

To do a real-time running status log:

> while (true) { db.currentOp(true).inprog.forEach(function(op){ if(op.msg!==undefined) print(op.msg) }); sleep(1000); }
Index Build: scanning collection Index Build: scanning collection: 43687948/47760207 91%
Index Build: scanning collection Index Build: scanning collection: 43861991/47760228 91%
Index Build: scanning collection Index Build: scanning collection: 44993874/47760246 94%
Index Build: scanning collection Index Build: scanning collection: 45968152/47760259 96%