Create a positive index of the name field and a reverse index of the age on the test collection

View all database names and space usage in mongodb

view the latests log information of mongodb

Start mongo replication set in docker, set mount, configuration verification and memory limit

Generate the mongodb-keyfile file in linux, ps: Need to set up user groups and permissions sudo chmod 600 mongodb-keyfile sudo chown 999 mongodb-keyfile

Update the data whose name is cmdhelp in the test table, if it does not exist, create it

Clear the disk space occupied by the deleted data in the test table

Remove member from the current replica set 192.168.2.211:27017 Before running the rs.remove() operation, it is best to close the replica set member to be deleted. By default, the replica set member waits for 5 minutes, and then disconnects the deleted member

Authenticate the admin user identity after passing through the mongo shell

View the total number of documents in the test collection in mongodb