Hi all,
I’m currently testing the mongodump and mongorestore commands for a MongoDB single installation but I can’t get it working. Everything works fine until I add a new user. If I make a new mongodump and mongorestore I get the following error:
Failed: restore error: error running merge command: (Location40414) BSON field '_mergeAuthzCollections.tempRolesCollection' is missing but a required field
I’m using the docker container docker pull mongo:5.0.2 which uses the following versions:
Ubuntu 20.04.2 LTS
MongoDB 5.0.2
mongodump 100.4.1
mongorestore 100.4.1
This is what I’m doing:
# MongoDB shell
db.test.insert( { item: "card1", qty: 15 } )
db.test.insert( { item: "card2", qty: 30 } )
db.test.insert( { item: "card3", qty: 45 } )
db.test.insert( { item: "card4", qty: 60 } )
db.test.insert( { item: "card5", qty: 75 } )
# bash shell
mongodump
mongorestore --drop dump
# Until now everything works without any problem so I'm going to add a new user
# MongoDB shell
db.createUser({user: "testUser", pwd: "testpwd", roles: [{role: "userAdminAnyDatabase" , db:"admin"}]})
# bash shell
mongodump
2021-08-19T09:11:04.033+0000 writing admin.system.users to dump/admin/system.users.bson
2021-08-19T09:11:04.036+0000 done dumping admin.system.users (1 document)
2021-08-19T09:11:04.038+0000 writing admin.system.version to dump/admin/system.version.bson
2021-08-19T09:11:04.042+0000 done dumping admin.system.version (2 documents)
2021-08-19T09:11:04.044+0000 writing test.test to dump/test/test.bson
2021-08-19T09:11:04.048+0000 done dumping test.test (5 documents)
mongorestore --drop dump
2021-08-19T09:11:05.021+0000 preparing collections to restore from
2021-08-19T09:11:05.026+0000 reading metadata for test.test from dump/test/test.metadata.json
2021-08-19T09:11:05.028+0000 dropping collection test.test before restoring
2021-08-19T09:11:05.058+0000 restoring test.test from dump/test/test.bson
2021-08-19T09:11:05.069+0000 finished restoring test.test (5 documents, 0 failures)
2021-08-19T09:11:05.070+0000 restoring users from dump/admin/system.users.bson
2021-08-19T09:11:05.111+0000 Failed: restore error: error running merge command: (Location40414) BSON field '_mergeAuthzCollections.tempRolesCollection' is missing but a required field
2021-08-19T09:11:05.111+0000 5 document(s) restored successfully. 0 document(s) failed to restore.
echo $?
1
If I drop the data and perform the restore the data and the user is correctly there.
If I drop also the user and perform the restore the user is gone.
The same process works without any problem with MongoDB 4.4.8
Do I make some mistake or is mongorestore currently broken when users are getting added. I looked already at the documentation of adding users, mongodump and mongorestore, but I can’t find anything I would need to do to get it working.
Did anyone saw this behaviour already or knows what to do to get the mongorestore done?