MongoDB Index Export/Migration Tool

README.md

MongoDB Index Export/Migration Tool

Description:

Have you ever needed to copy your indexes from one platform to another without restoring a backup?

Instructions:

Run this script on the source database. You have one option which is to force the background option.

var always_background = true;


db.getCollectionNames()
.sort()
.forEach(function(collection) {
    indexes = db[collection].getIndexes();
    
    if (indexes && indexes.length > 0) {
        print("//Indexes for " + collection + ":");
    }
    
    indexes.forEach(function (index) {
       var key = JSON.stringify(index.key);
       delete index.v;
       delete index.ns;
       delete index.name;
       delete index.key;
       if (always_background) {
           index.background = true;
       }
       var options = JSON.stringify(index);
       
       if (key !== '{"_id":1}') {
           print('db.' + collection + '.createIndex(' + key + ', ' + options + ');');
       }
    });
});