Multi-Site High Availability Service
Multi-Site High Availability Service
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- Is MAS a Product or Solution?
- Does MAS Synchronize Data in Addition to Controlling Access from Applications to Databases?
- Is MAS Like a Management Channel for Which I Need to Configure Automatic Switchover Policies?
- What Is the Automatic Switchover Mechanism? How Does MAS Implement Switchovers in Seconds?
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Multi-Active DR Solution FAQs
- In the Single- or Dual-Instance Data Layer Architecture (Same Region, Multi-AZ, Traffic Distribution with API Gateway), Which Components Are Provided by MAS and Which Ones Should I Prepare?
- Can I Implement the Active-Active Solution on Any Other Services in Addition to Self-Built Cloud Services?
- How Do I Implement Database Dual-Write?
- Does the Multi-Active Architecture Have Any Requirements on My Services?
- What Are the RPO and RTO of the Multi-Active DR Solution?
- Does the Multi-Active DR Solution Have Any Network Requirements? Will Incorrect Switchover Occur If the Network is Unstable or Jitters?
- How Do I Configure Monitoring for Multi-AZ Deployment in the Same Region?
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Global Configurations/
Configuring DC-level Switchover
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Configuring DC-level Switchover
This section describes how to configure the automatic switchover setting. If this function is enabled, switchovers between data centers will be automatically triggered if MAS is abnormal, for example, when split-brain occurs or the active data center is faulty.
Configuring DC-level Switchover
- Log in to the MAS console. On the Multi-Active Instances page, click an instance to go to its console.
- Click the Global tab.
- On the DC Switchover page, toggle the switch as required.
- Disabled: If the data sources are normal but split-brain occurs or an active DC is faulty, monitors under the instance will not switch over automatically. This prevents unnecessary switchovers.
- Enabled: If split-brain occurs, an active DC is faulty, or a data source is abnormal, monitors under the instance will switch over automatically.
NOTE:
- Split-brain refers to the situation where more than one master brain exists in an HA cluster due to network problems. When split-brain occurs in a cluster, data between clusters may be inconsistent, affecting arbitration of monitoring results.
- When split-brain occurs or an active DC is faulty, all monitors under the MAS instance will switch over. When a data source is faulty, only the corresponding monitor will switch over.
- Automatic switchover can also be enabled during monitor creation.
- Click OK.
Parent topic: Global Configurations
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