This section covers everything you need to know to run your Redis Enterprise Software (RS) deployment.
In addition to using the RS web UI to manage the cluster, you can also do cluster operations with the cluster REST API.
To access the cluster REST API documentation, either:
- Open the HTML files in the RS software package:
- Download the RS software package.
- Unarchive the package.
- Unarchive the rlec_docs.tar.gz package.
- Open the
rlec_docs\html\index.htmlfile in a web browser.
- Open the HTML files in an installed RS node:
- Connect to the terminal of an RS node.
- Change directory to the installation directory of RS, for example
- Copy the rlec_rest_api.tar.gz package to a host with a web browser and unarchive it.
- Open the
rlec_docs\html\index.htmlfile in a web browser.
The information in the section discusses important topics you need to know about when planning your Redis Enterprise Software cluster for a production deployment. Active-Active Geo-Distributed Redis In Redis Enterprise, active-active geo-distribution is based on CRDT technology. The Redis Enterprise implementation of CRDT is called an Active-Active database (formerly known as CRDB). With Active-Active databases, applications can read and write to the same data set from different geographical locations seamlessly and with latency less than 1 ms, without changing the way the application connects to the database.
A Redis Enterprise Software (RS) cluster typically consists of several nodes. For production deployments, Redis Labs recommends an uneven number of nodes, with a minimum of three. Note: In a cluster that consists of only one node, some features and capabilities are not enabled, such as database replication that provides high availability. To set up a new cluster, you must first install the Redis Enterprise Software package as described in the previous section and then set up the cluster as described below.
When you install Redis Enterprise Software (RS) on the first node of a cluster, you create the new cluster. After you install the first node, you can add more nodes to the cluster. Prerequisites The clocks on all nodes must always be synchronized. If the clock in the node you are trying to join to the cluster is not synchronized with the nodes already in the cluster, the action fails and an error message is shown indicating that you must synchronize the clocks first.
You can create Redis databases that are are clustered and distributed across a single Redis Enterprise Software (RS) cluster. These databases can use Redis Enterprise features like: Redis on Flash High availability Data persistence Redis modules You can create databases according to the number of shards in your subscription and the memory available on the machine. Note - For databases with Active-Active replication for geo-distributed locations, create an Active-Active database.
You can create Redis Enterprise Software (RS) users and assign them to roles with permissions for: Cluster management - The areas of the cluster web UI and API that a user can access and edit. Database connections - Commands and keys that an authenticated user can use in database connections. You can manage users and roles in access control or with the REST API. Adding a user To add a user to the cluster:
This section has all you need to know to maintain a Redis Enterprise Software (RS) cluster. Cluster Name, Email Service, Time Zone, and License You can view and set various cluster settings in the Settings > General page. Entering a cluster key After purchasing a cluster key and if your account has the “Admin” role, you can enter the key in the Cluster Key field, either during initial cluster creation or at any time afterward.
This section contains all you need to know to maintain Redis Enterprise Software (RS) databases. Causal Consistency in an Active-Active Database When you enable Causal Consistency in Active-Active databases, the order of operations on a specific key are maintained across all Active-Active database instances. For instance, if operations A and B were applied on the same key and the effect of A was observed by the instance that initiated B before B was applied to the key, then all instances of an Active-Active databases would observe the effect of A before observing the effect of B.
You can use the metrics that measure the performance of your Redis Enterprise Software (RS) clusters, nodes, databases and shards to keep an eye on the performance of your databases. In the RS admin console, you can see the real-time metrics and you can configure alerts that send notifications based on alert parameters. You can also access the metrics and configure alerts through the REST API so that you can integrate the RS metrics into your monitoring environment, for example using Prometheus and Grafana.
This section explains how you can: Import data into your Redis Enterprise Software (RS) database Export from your database to another data store Flush your data out of your database Importing Data into a Database You can import export or backup files of a specific Redis Enterprise Software (RS) database to restore data. You can either import from a single file or from multiple files, such as when you want to import from a backup of a clustered database.
Management actions performed with Redis Enterprise are audited in order to fulfill two major objectives: To make sure that system management tasks are appropriately performed and/or monitored by the Administrators To facilitate compliance with regulatory standards In order to fulfill both objectives, the audit records contain the following information: Who performed the action? What exactly was the performed action? When was the action performed? Did the action succeed or not?
This section includes various troubleshooting tips and tricks for Redis Enterprise Software. Topics: Creating a Support Package If you encounter any issues that you are not able to resolve yourself and need to contact Redis Labs support for assistance, you can create a support package that gathers all essential information to help us debug your issues. Note - The process of creating the support package can take several minutes and generates load on the system.
You can view the Redis Enterprise Software (RS) subscription agreement here. This Product Lifecycle fully reflects our subscription agreement. However, for any discrepancy between the two policies, the subscription agreement prevails. Redis Enterprise modules follow the modules lifecycle. Release numbering Redis Labs uses a four-place numbering scheme to designate released versions of its products. The format is “Major1.Major2.Minor-Build”. Major sections of the version number represents fundamental changes and additions in capabilities to Redis Enterprise Software.