Set Up Automatic Failover

Mirth® Connect by NextGen Healthcare Advanced Clustering User Guide

Enable Postgres Replication

Before you begin Select a secondary appliance in your cluster to replicate from a primary appliance, and verify that the Postgres service is running on the primary appliance. Postgres replication is the process of copying data from one database server to another. The source database is also known as the “primary” database, and the database receiving the copied data is known as the “secondary” database. On your secondary appliance, select Services > Postgres > Replication, and select Replicate from a remote database. Enter the appliance's IP address, and select Next. Select Next again. You are redirected to the primary appliance to authorize replication Select Authorize <IP address of secondary> to replicate this database, then select Next to return to the secondary appliance. Select Begin Copy to perform the initial copy of the database from primary to secondary, then, if you are ready to copy and you have backed up the secondary's database (if needed), select OK. When the copy is comp

Mirth® Appliance by NextGen Healthcare Deployment Guide, 4.1

Set Up Automatic Failover

Automatic failover enables you to move an application to a standby server during a failure. Before you begin You need an unused IP address to assign as the database virtual IP (VIP) address. This VIP must be in the same IP network as the appliances. You should ensure it's not already in use on your network, for example, by using the ping command and verifying you receive no responses. If you have any questions, contact your network administrator or NextGen Healthcare Support. After setting up replication, you can set up automatic failover for both the primary system and the standby system. Set up the first appliance (the primary). Go to Services > Postgres > Replication. Select Set up Auto Failover. Enter your database VIP. Select Enable. The window reloads automatically. Watch the window to ensure it eventually shows the “Actively managing the VIP” status. Auto Failover window Set up the second appliance (the standby). Go to Services > Postgres > Replication. Select Set up Auto Failov

Mirth® Connect by NextGen Healthcare Advanced Clustering User Guide

Download the Advanced Clustering Plug-in

You must download the Advanced Clustering plug-in, from the Success Community website to install and set-up the plug-in. This plug-in is available for Mirth® Connect version 3.2.2 or greater. Log on to Success Community. In the Hot Topics section, select View More to view the full list of hot topics. In the Search field, search for "connect" to limit the search to Connect-specific topics, and then select Mirth Connect Download Central. On the Mirth Connect Download Central page, select the Advanced Clustering link to go to the Advanced Clustering Plug-In URL page. Select the link corresponding to your version of Mirth® Connect by NextGen Healthcare to start the download. Update the Appliances You must ensure that each appliance in the cluster has the latest software updates. Enable Postgres Replication Set Up Automatic Failover Automatic failover maximizes the availability of the Virtual IP address by switching to a standby server during a failure or service event. Run the Mirth Connec

Mirth® Appliance by NextGen Healthcare Deployment Guide, 4.1

Viewing Diagnostic Information about Both Units

You can view detailed diagnostic information about your servers on the Postgres Replication Advanced Page window. Select Services > Postgres > Replication. Select Advanced. Select through the various windows. The View Auto Failover Log window reloads automatically. You can monitor the status while testing failover. Parent topic: Set Up Automatic Failover

Mirth® Appliance by NextGen Healthcare Deployment Guide, 4.1

Replicate the Database

You can use replication to designate a secondary appliance that contains a copy of the database that is on your primary appliance. After everything is set up, and the initial copy of the database is created on the secondary system, updates made to the database on the primary system ripple through to the replica database on the secondary system. Note: Even though "database" is referred to in the singular, all databases contained in the Postgres instance on the primary system would be replicated. You can view the list of these databases on the Database Management window. One of the principal reasons for setting up replication is so that the secondary database can be used as a failover system if the primary database becomes unusable. For this reason, the secondary database is frequently referred to as a standby database, because it is ready and waiting, standing by in case it is needed. It is also possible to set up multiple standby databases for the same primary database. For more inform

Mirth® Appliance by NextGen Healthcare Deployment Guide, 4.1

Set Up Clustering Using the Appliance Control Panel

Before you begin Setting up clustering provides a highly-available network endpoint for message processing backed by a single, highly-available database. Before starting to set up clustering, you need to set up replication and automatic failover for the appliances that are to be part of the cluster. See the Replicate the Database and Set Up Automatic Failover for details on how to do this. Take a snapshot of each VM before proceeding. You need an unused IP address to assign as the Mirth® Connect Virtual IP (VIP) address: This VIP must be different from and is in addition to the database VIP. You should ensure it's not already in use on your network, for example, by using the ping command and verifying you receive no responses. This VIP must be in the same IP network as the appliance. Contact your network administrator or NextGen Healthcare Support if you have any questions. Set mirthdb's password and IP access list on the primary node. Go to Services > Postgres > Database Management. S

Set Up Automatic Failover

Recommendations

Enable Postgres Replication

Set Up Automatic Failover

Download the Advanced Clustering Plug-in

Viewing Diagnostic Information about Both Units

Replicate the Database

Set Up Clustering Using the Appliance Control Panel

Enable Postgres Replication

Set Up Automatic Failover

Download the Advanced Clustering Plug-in

Viewing Diagnostic Information about Both Units

Replicate the Database

Set Up Clustering Using the Appliance Control Panel