I'm newby to MongoDB and .js.
I have a simple add_app_user.js script with the following content:
# MongoDB shell version v4.2.17
# Set the database to 'testdb'.
db = db.getSiblingDB('testdb');
# Create new user.
db.createUser(
{
user: "testuser",
pwd: "testpass",
roles: [ "readWrite" ]
}
);
This works fine for the first time (when such a user doesn't exist).
I need to make it idempotent.
I couldn't find an simple to understand script that will check for the "testuser" availability in the "testdb" and run my script block only if the check fails.
Try this:
if (db.getUser("testuser") == null) {
db.createUser(
{
user: "testuser",
pwd: "testpass",
roles: [ "readWrite" ]
}
);
}
NB, usually users are created in admin database. Actually I don't know any reason why they should be created anywhere else.