7.4
Table Of Contents
- Managing vRealize Automation
- Contents
- Managing vRealize Automation
- Maintaining and Customizing vRealize Automation Components and Options
- Broadcast a Message on the Message Board Portlet
- Starting Up and Shutting Down vRealize Automation
- Updating vRealize Automation Certificates
- Extracting Certificates and Private Keys
- Replace Certificates in the vRealize Automation Appliance
- Replace the Infrastructure as a Service Certificate
- Replace the IaaS Manager Service Certificate
- Update Embedded vRealize Orchestrator to Trust vRealize Automation Certificates
- Update External vRealize Orchestrator to Trust vRealize Automation Certificates
- Updating the vRealize Automation Appliance Management Site Certificate
- Replace a Management Agent Certificate
- Change the Polling Method for Certificates
- Managing the vRealize Automation Postgres Appliance Database
- Backup and Recovery for vRealize Automation Installations
- The Customer Experience Improvement Program
- Adjusting System Settings
- Monitoring vRealize Automation
- Monitoring vRealize Automation Health
- Monitoring and Managing Resources
- Monitoring Containers
- Bulk Import, Update, or Migrate Virtual Machines
Appliance Database Failover
In a high availability configuration, the master constantly streams transactions to the replica servers. If the
master fails, the active and working replica is ready to proceed with read-only requests. When the new
master is promoted, either manually or automatically, all of the upcoming requests are moved to it.
Configure the Appliance Database
You can use the Virtual Appliance Management Interface Database page to monitor or update the
configuration of the appliance database. You can also use it to change the master node designation and
the synchronization mode used by the database.
The appliance database is installed and configured during vRealize Automation system installation and
configuration, but you can monitor and change the configuration from the Database tab on the Virtual
Appliance Management Interface.
The Connection Status text box indicates whether the database is connected to the
vRealize Automation system and is functioning correctly.
If your appliance database uses multiple nodes to support failover, the table at the bottom of the page
displays the nodes, and their status and indicates which node is the master. The Replication mode text
box shows the currently configured operation mode for the system, either synchronous or asynchronous.
Use this page to update appliance database configuration.
The Sync State* column in the database nodes table shows the synchronization method for the cluster.
This column works with the Status column to show the state of cluster nodes. Potential status differs
depending on whether the cluster uses asynchronous or synchronous replication.
Table 2‑4. Sync State for Appliance Database Replication Modes
Mode Sync State Message
Synchronous replication Master node - no status
Replica node - sync
Other nodes - potential
Asynchronous replication Master node - no status
Other nodes - potential
The Valid column indicates whether replicas are synchronized with the master node. The master node is
always valid.
The Priority column shows the position of replica nodes in relation to the master node. The master node
has no priority value. When promoting a replica to become the master, select the node with the lowest
priority value.
When operating in synchronous mode, vRealize Automation invokes automatic failover. In the event of
master node failure the next available replica node will automatically become the new master. The
failover operation requires 10 to 30 seconds on a typical vRealize Automation deployment.
Managing vRealize Automation
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