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ApsaraDB for MongoDB:FAQ overview

Last Updated:Jan 30, 2023

This topic provides answers to frequently asked questions about ApsaraDB for MongoDB.

Note For questions not listed in this topic, see ApsaraDB for MongoDB error codes.

Compatibility and configuration changes


Basic FAQ	Other FAQ
What is the difference between ApsaraDB for MongoDB and MongoDB? What database versions does ApsaraDB for MongoDB support? Does ApsaraDB for MongoDB support embedded/nested documents? What commands are supported and not supported by ApsaraDB for MongoDB?	Can I add nodes to an ApsaraDB for MongoDB instance? Does ApsaraDB for MongoDB support Mongoose? What is the impact of changes made to the storage space on an ApsaraDB for MongoDB instance?

Purchase and payment


Basic FAQ	Other FAQ
What instance types are available for ApsaraDB for MongoDB? Why am I unable to find the ApsaraDB for MongoDB instance that I created?	How do I switch a pay-as-you-go instance to a subscription instance? Can I switch a subscription instance to a pay-as-you-go instance? How do I manually renew an ApsaraDB for MongoDB subscription instance? How is an ApsaraDB for MongoDB subscription instance automatically renewed?

Connections and Network


Basic FAQ	Other FAQ
Troubleshoot logon issues for the mongo shell How can I connect to an ApsaraDB for MongoDB instance by using DMS? What do I do if the "Authentication failed" message is displayed? What client languages does ApsaraDB for MongoDB support? How do I query and limit the number of connections? How to troubleshoot database connection failures after the number of connections reaches the upper limit What do I do if the "Connection reset by peers" error is returned when I try to establish a connection to an ApsaraDB for MongoDB instance by using the mongo shell? The "network error while attempting to run command" message is prompted when you log on to an ApsaraDB for MongoDB instance from a Linux instance by using the mongo shell The "connection attempt failed" message is prompted when you log on to an ApsaraDB for MongoDB instance from a Linux instance by using the mongo shell The ApsaraDB for MongoDB instance cannot be connected from a MongoDB client. Does ApsaraDB for MongoDB support access over the Internet? Does ApsaraDB for MongoDB support password-free access?	Connection methods for ApsaraDB for MongoDB instances Connect to an ApsaraDB for MongoDB instance over the Internet Connect a local client to an ApsaraDB for MongoDB instance by using an SSL-VPN tunnel Connect to an ApsaraDB for MongoDB instance over the internal network across zones Manage ApsaraDB for MongoDB instances by using DMS Connect an ECS instance to an ApsaraDB for MongoDB instance when their network types are different How to connect an ECS instance to an ApsaraDB for MongoDB instance when they are in different regions Connect an ECS instance with an ApsaraDB for MongoDB instance in another Alibaba Cloud account How can I install and use the mongo shell in a Windows operating system?

Failover


Basic FAQ	Other FAQ
What causes the primary/secondary switchover for an instance?	How do I configure manual primary/secondary failover?
What are impacts of primary/secondary switchover?	Why is the "NotMaster", "NotWritablePrimary", or "Time out after 30000ms while waiting for a server that matches writableServerSelector" error message is returned when data is written to a replica set instance?

Data security


Basic FAQ	Other FAQ
How do I understand the names and sources of an IP address whitelist for ApsaraDB for MongoDB? Does ApsaraDB for MongoDB support KMS encryption? MONGODB-CR authentication fails on ApsaraDB for MongoDB	Configure SSL encryption for an ApsaraDB for MongoDB instance Configure TDE for an ApsaraDB for MongoDB instance

Backup and restoration


Basic FAQ	Other FAQ
How do I back up and restore an ApsaraDB for MongoDB instance?	Backup and restoration solutions Download a backup file

Performance, storage capacity, and memory


Basic FAQ	Other FAQ
What do I do if my ApsaraDB for MongoDB instance is heavily loaded? Troubleshoot high memory usage on an ApsaraDB for MongoDB instance Troubleshoot high CPU utilization on an ApsaraDB for MongoDB instance Troubleshoot high IOPS usage on an ApsaraDB for MongoDB instance Troubleshoot high disk usage on an ApsaraDB for MongoDB instance Why does ApsaraDB for MongoDB trigger primary/secondary switchovers? What is the node fault handling mechanism of ApsaraDB for MongoDB instances? What do I do if my ApsaraDB for MongoDB instance is locked due to exhausted disk space? When is the storage space of a database released?	How frequent is monitoring data collected in ApsaraDB for MongoDB?

Accounts and permissions


Basic FAQ	Other FAQ
What permissions must the root account be granted to create an instance? Create an account for an ApsaraDB for MongoDB instance How do I configure RAM user permissions on ApsaraDB for MongoDB How can I change the password of a database in an ApsaraDB for MongoDB instance?	N/A

Logs


Basic FAQ	Other FAQ
What is the log deletion policy of an ApsaraDB for MongoDB instance? Analyze running requests in ApsaraDB for MongoDB databases How can I check slow requests in an ApsaraDB for MongoDB instance? Can I forcibly terminate a request which is being processed for a very long period?	Overview View slow query logs View error logs View operational logs Analyze slow logs

Troubleshooting


Basic FAQ	Other FAQ
False is prompted when you delete a collection on ApsaraDB for MongoDB What do I do if the "Authentication failed" message is displayed? Why does the console prompt that the instance does not exist for a running instance?	N/A