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Migrating Data Between DCS Instances Online Migration Between Instances Backup Import Between DCS Redis Instances Parent Topic: Migrating Instance Data
Viewing a Parameter Template of a DCS Instance System default parameter templates vary by Redis version and instance type. A system default parameter template contains default instance parameter configurations. Parameter templates can be customized for parameter configurations, and
Downloading DCS Instance Backup Files Automatically backed up data can be retained for a maximum of 7 days. Manually backed up data is not free of charge and takes space in OBS. Due to these limitations, you are advised to download the RDB or AOF backup files and permanently save
Managing DCS Instance Shards and Replicas This section describes how to query the shards and replicas of a master/standby, cluster, or read/write splitting DCS Redis instance, and how to manually promote a replica to master. By default, a master/standby or read/write splitting instance
Configuring DCS Redis ACL Users If you need multiple accounts for a Redis instance, use ACL to create users. ACL users support read-only or read/write permissions. Notes and Constraints By default, this function is supported by DCS Redis 4.0/5.0 instances. Temporarily, this function
Configuring DCS Redis Access Whitelist The following describes how to manage whitelists of a Redis instance to allow access only from whitelisted IP addresses. Enabling whitelists only allows instance access from IP addresses within them, and only applies to new connections. If no
Backing up DCS Instances Automatically On the DCS console, you can configure an automatic backup policy. The system then backs up data in your instances according to the backup policy. By default, automatic backup is disabled. To enable it, perform the operations described in this
Comparing DCS and Open-Source Cache Services DCS supports single-node, master/standby, and cluster instances, ensuring high read/write performance and fast data access. It also supports various instance management operations to facilitate your O&M. With DCS, you only need to focus
Comparing DCS Redis Instance Types Table 1 describes the differences between different Redis instance types in terms of features and commands. DCS for Redis 3.0 is no longer provided. You can use DCS for Redis 5.0 or later. Table 1 Differences between DCS instance types Item Single-Node
Does DCS Support Sentinels? Redis 4.0 and later: Single-node, master/standby, and Redis Cluster instances do not support Sentinels. Read/Write splitting instances support Sentinels and clusters. For Proxy Cluster instances, clusters are supported by default, Sentinels are supported
Upgrading Minor or Proxy Versions of a DCS Instance DCS optimizes functions and fixes vulnerabilities in minor and proxy upgrades. This section describes how to upgrade the minor or proxy version of an instance. Upgrading the minor or proxy version does not affect the instance connection
Backup Import Between DCS Redis Instances You can migrate data between DCS instances by importing backup files. Notes and Constraints To migrate to an instance with SSL enabled, disable the SSL setting first. For details, see Transmitting DCS Redis Data with Encryption Using SSL.
Viewing Client Information of a DCS Instance Session Session management helps addressing DCS instance performance issues or abnormal operations. Client connection information, command execution, and connection duration of a target instance session can be viewed in real time. Abnormal
Viewing and Modifying Basic Settings of a DCS Instance On the DCS console, you can view and modify DCS instance basic information. Viewing and Modifying Basic Information of a DCS Instance Log in to the DCS console. Click in the upper left corner of the management console and select
Viewing Slow Queries of a DCS Redis Instance Redis logs queries that exceed a specified execution time. You can view the slow logs on the DCS console to identify performance issues. Configure slow queries with the following parameters: slowlog-log-slower-than: The maximum time allowed
Changing Cluster DCS Instances to be Across AZs To implement disaster recovery, cluster instances (whose master and standby nodes are) in a single AZ can be deployed across AZs by migrating the standby nodes to other AZs. Notes and Constraints Available only for single-AZ cluster
Viewing Audit Logs of a DCS Redis Instance Command audit logs on the DCS console record client operations on DCS. The storage, query, and analysis of audit logs are provided by Log Tank Service (LTS). Currently, only Proxy Cluster DCS Redis 4.0 and later instances in the CN Beijing4
Creating a Custom Parameter Template for a DCS Instance System default parameter templates vary by Redis version and instance type. A system default parameter template contains default instance parameter configurations. Parameter templates can be customized for parameter configurations
Migrating Data from Self-Hosted Redis to DCS Migrating Self-Built Redis Online Self-Hosted Redis Migration with Backup Files Self-Hosted Redis Migration with redis-cli (AOF) Self-Hosted Redis Migration with redis-cli (RDB) Self-Hosted Redis Cluster Migration with redis-shake (Online
Commands Supported and Disabled by DCS for Redis 4.0 DCS for Redis 4.0 is developed based on Redis 4.0.14 and is compatible with open-source protocols and commands. This section describes DCS for Redis 4.0's compatibility with Redis commands, including supported and disabled commands
