- Notification sent by Atlas when your database operations or
server usage reach thresholds that affect cluster
performance. To learn what conditions you can set to trigger
alerts, see Alert Conditions.TipSee Also:
- analytics node
- Specialized read-only node that can isolate queries which you do not want to affect your operational workload. Analytics nodes are useful for handling analytic data such as reporting queries executed by BI tools. You can host analytics nodes in dedicated geographic regions to optimize read performance and reduce latency.
- Communication protocol facilitating interaction between the client and MongoDB Atlas. You can use the Atlas API to automate many of the tasks performed in the Atlas UI.
- Atlas Search
- Fine-grained text indexing enabling advanced text search on your data
without any additional required management. Atlas Search provides
options for several kinds of text analyzers,
score-based results ranking, and a rich
query language.TipSee Also:
- Atlas user
- Account used to access the Atlas application. You can grant
Atlas users access to Atlas organizations, projects, or both,
with certain permissions defined by user roles.
Atlas users are different than database users. Atlas users do not provide access to any
- Atlas user role
- Set of permissions granted to an Atlas user. You can grant
permissions at the organization or project level.TipSee Also:
- Configurable option to have your cluster automatically increase or
decrease its cluster tier, storage capacity, or both in response to
cluster usage.TipSee Also:
- Copy of your data that encapsulates the state of your cluster at a given time. Backups provide a safety measure in the case of data loss events.Atlas provides the following fully-managed methods for backups:
- cloud backups
- Localized cluster backup storage using the native
snapshot functionality of the cluster's cloud service
provider.Atlas supports Cloud Backups for clusters served on:TipSee Also:
- Set of nodes comprising a MongoDB deployment. In Atlas, clusters can be replica sets or sharded deployments.
- cluster class
- Configurable for M40+ clusters hosted on AWS.Storage class of your cluster. Your selected class affects cluster
storage performance and cluster costs. You can choose one of the
- Low CPU
- Local NVMe SSD
- cluster tier
- Dictates the memory, storage, and IOPS specification for each data-bearing server in the cluster. Cluster storage size and overall performance increase as the cluster tier increases.
- custom role
- Custom set of MongoDB privilege actions and
roles that you can save and assign to
database users. Create custom roles when
Atlas's built-in database user privileges don't describe your desired set of
- Data Explorer
- Tool within Atlas to view and interact with cluster data.
You can also use the Data Explorer to manage indexes and run
aggregation pipelines to process your data.TipSee Also:
- Data Lake
- MongoDB's solution for querying data stored in low-cost S3 buckets
using the MongoDB Query Language. Analytics applications can use
Atlas Data Lake to make use of archived data for their data
processing needs.TipSee Also:
- Database user
- Credentials used to authenticate a client to access a MongoDB
database deployment. You can assign privileges to a database user to determine that user's
access level to a cluster. Database users are different from
Atlas users. Database users have access to
MongoDB deployments, not the Atlas application.TipSee Also:
- Database user privileges
- Set of privilege actions or roles
granted to a database user. You can assign database user privileges
at the cluster, database, and collection level.TipSee Also:
- dedicated cluster
- Cluster category containing clusters of tier
M20clusters are recommended for development environments, and for production use only for low-traffic applications.
M30and higher clusters are recommended for full-fledged production environments.
- Cluster of MongoDB servers containing your data. Atlas-managed deployments are either replica sets or sharded clusters.
- electable node
- Node which is eligible to become the primary member of your replica set. Atlas prioritizes nodes in the Highest Priority region for primary eligibility during elections. To ensure reliable elections, the total number of electable nodes across an entire region must be 3, 5, or 7.
- encryption key
- Random string of bits generated specifically to encrypt and
Project Ownerscan configure an additional layer of encryption on their data in addition to the default encryption at rest provided by Atlas. Project owners can use their Atlas-compatible customer key management provider with the MongoDB encrypted storage engine.Atlas supports the following customer key management providers when configuring Encryption at Rest:
- Amazon Web Services Key Management Service
- Azure Key Vault
- Google Cloud Platform Key Management Service
- Free Tier
- Free-to-use cluster tier that provides a small-scale development
environment to host your data. Free Tier clusters never expire, and
provide access to a subset of Atlas features
and functionality. Free Tier clusters might also be referred to by
their instance size,
- Global Cluster
- Clusters with defined geographic zones to support location-aware read
and write operations for globally distributed application instances
and clients. You can enable global sharding on clusters of tier
- global write zone
- Geographic zone representing a subset of your global cluster distribution. Each Global Cluster supports up to 9 distinct global write zones. Each zone consists of one Highest Priority region and one or more electable, read-only, or analytics regions. The available geographic regions depend on the selected cloud service provider.
- See project.
- group ID
- See project ID.
- Highest Priority region
- Region in a multi-region cluster which Atlas
prioritizes for primary eligibility during elections.Tip
- Estimated performance improvement of an index suggested by the Performance Advisor.TipSee Also:
- interface endpoint
- Elastic network interface with a private IP address from the IP
address range of your VPC subnet on AWS . An interface endpoint
serves as an entry point for traffic from clients in your VPC to
an Atlas cluster when you create a AWS PrivateLink connection between
an AWS VPC and Atlas clusters in a specified region.TipSee Also:
- Cross-platform protocol used to authenticate users and authorize them to access data on a cluster. You can use Atlas to manage user authentication and authorization from all MongoDB clients using your own LDAP server over TLS . A single LDAPS configuration applies to all clusters in an Atlas project.
- legacy backups
- Incremental backups of your cluster taken by
Atlas that ensure that your backups are typically just a few
seconds behind the operational system. You can restore your cluster
to a state from a selected point in time within the last 24 hours.ImportantLegacy Backup DeprecatedMongoDB deprecated the Legacy Backup feature. Clusters that use Legacy Backup can continue to use it. MongoDB recommends using Cloud Backups. Effective 23 March 2020, all new clusters can only use Cloud Backups.TipSee Also:
- live migration
- Method to seamlessly move an existing source replica set or sharded
cluster to Atlas. During the live migration process, Atlas
keeps the destination cluster in sync with the remote source until you
cut your applications over to the Atlas cluster.TipSee Also:
- maintenance window
- Day and time of the week when Atlas should start weekly
maintenance on your cluster. You can set your maintenance window
in your Project Settings.ImportantMaintenance Window Considerations
- Urgent Maintenance Activities
- Urgent maintenance activities such as security patches cannot wait for your chosen window. Atlas will start those maintenance activities when needed.
- Ongoing Maintenance Operations
- Once maintenance is scheduled for your cluster, you cannot change your maintenance window until the current maintenance efforts have completed.
- Maintenance Requires Replica Set Elections
- Atlas performs maintenance the same way as the maintenance procedure described in the MongoDB Manual. This procedure requires at least one replica set election during the maintenance window per replica set.
- Maintenance Starts As Close to the Hour As Possible
- Maintenance always begins as close to the scheduled hour as possible, but in-progress cluster updates or unexpected system issues could delay the start time.
- MongoDB Charts
- Visualization tool for your Atlas data. You can launch MongoDB
Charts from your Atlas cluster and view your data with the
Charts application to begin visualizing your data.TipSee Also:
- MongoDB Realm
- Serverless platform that enables developers to quickly build
applications without having to set up server infrastructure.
MongoDB Realm automatically integrates the connection to your Atlas
cluster databases, allowing for seamless interaction between your
application and data.TipSee Also:
- multi-region cluster
- Atlas cluster spanning multiple geographic regions. Multi-region clusters can increase availability and improve performance by routing application queries to the most appropriate geographic regions.Multi-region clusters must contain electable nodes, and can optionally contain read-only nodes and analytics nodes.
- network peering connection
- Process by which two Internet networks connect and exchange traffic.
You can directly peer your VPC with the Atlas VPC created for
your MongoDB clusters. Using network peering, your application
servers can directly connect to Atlas while remaining isolated
from public networks.TipSee Also:
- NVMe storage
- Available for M40+ clusters hosted on AWSFor applications hosted on AWS which require low-latency and
high-throughput IO, you can use the NVMe cluster class. The
NVMe cluster class leverages a unique data protocol to
greatly improve data access speeds.NVMe clusters use a hidden secondary node consisting of a provisioned
volume with high throughput and IOPS to facilitate backup.TipSee Also:
- Logical grouping of Atlas projects. You can
leverage an organization to manage billing, users, and security
settings for the projects it contains.
- Billing happens at the organization level while preserving visibility into usage in each project.
- You can view all projects within an organization.
- You can use teams to bulk assign organization users to projects within the organization.
- organization ID
- Unique 24-digit hexadecimal string used to identify your Atlas organization. The Get All Organizations API endpoint returns the ID of all organizations that the authenticated user executing the API call can access.
- Performance Advisor
- Atlas tool that monitors slow queries executed on
your cluster and suggests indexes to improve query performance. Each
index that the Performance Advisor suggests include an Impact
score indicating the potential performance improvement that index
would bring.TipSee Also:
- In a replica set, the primary is the member that receives all write operations. In multi-region clusters, Atlas prioritizes nodes in the Highest Priority region for primary eligibility during elections.
- Logical grouping of clusters. You can have
multiple clusters within a single project and multiple projects
within a single organization.NoteProject is synonymous with group.TipSee Also:
- project ID
- Unique 24-digit hexadecimal string used to identify your Atlas
project. The Get All Projects API endpoint returns the ID of all
projects that the authenticated user executing the API call can
access.NoteProject ID is synonymous with group ID.
- Query Profiler
- Atlas tool that diagnoses and monitors performance
issues in your cluster. The Query Profiler can expose long-running
queries and their performance statistics. You can filter the data
returned by the Query Profiler to hone in on specific namespaces
and operation types.TipSee Also:
- read-only node
- Replica set in a dedicated geographic region that supplements your electable node regions. You can use read-only nodes to localize data where it is most frequently read to improve performance.
- Real-Time Performance Panel
- Atlas monitoring service that displays current network
traffic, database operations on your clusters, and hardware statistics about your host machines. Use the
visually evaluate query execution times, monitor network activity,
and discover potential replication lag on secondary members of
replica sets.TipSee Also:
- replica set
- Group of MongoDB servers that maintain the same data set. Replica sets
provide redundancy, high availability, and are the basis for all
production deployments.TipSee Also:
- sharded cluster
- Set of nodes comprising a sharded MongoDB
deployment. A sharded cluster consists of config servers, shards, and
one or more
mongosrouting processes.TipSee Also:
- Cluster category containing
M5tier clusters. Shared clusters are generally used for development and small production workloads.Tip
- Backup of your data captured at a specific interval
and stored in a backup data center. The Snapshot Schedule determines the interval for taking snapshots and
how long to store them.TipSee Also:
- Group of Atlas users in the same organization. You can use teams to grant access to
the same group of Atlas users across multiple
projects. All users in the team share the same
project access.NoteAtlas users can belong to multiple teams.
- List of IP addresses with access to clusters within an Atlas project. Atlas only allows client connections to a cluster from entries in the corresponding project's whitelist. The whitelist can have up to 200 whitelist entries.