This document provides an overview and demonstration of EnterpriseDB's Failover Manager (EFM). It begins with an overview of EFM's capabilities in ensuring high availability and minimizing downtime during database upgrades or maintenance. It then covers installation and configuration prerequisites, supported platforms, and the EFM architecture involving a primary, standby, and witness database nodes. The remainder demonstrates switchover and failover functionality through a live demo in a replication environment using CentOS 7.7 and EnterpriseDB PostgreSQL Advanced Server 13.

1. EFM
Amandeep Singh
July 2021

2. © Copyright EnterpriseDB Corporation, 2021. All rights reserved.
2
Agenda
➢ Failover Manager overview
➢ Installation Demo
➢ Configuration Demo
➢ Q&A

3. Failover
Manager
overview

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4
Ensure business
continuity
Maintain high
availability
Upgrade with
minimal downtime
Why EFM
Monitor health databases and
identify failures quickly
Meet your SLAs by switching
over to the most recent standby
Switchover on demand to move
the primary to standby for
maintenance

5. Pre-Requisites
➢ Install Java 1.8 (or later)
➢ SMTP Server
➢ Streaming Replication
➢ Modify the pg_hba.conf File
➢ Ensure that the Database user
has Sufficient Privileges
➢ Ensure Communication
Through Firewalls

6. Supported
platforms
➢ RHEL 8.x / 7.x
➢ CentOS 8.x / 7.x
➢ OL 8.x / 7.x
➢ SLES 12
➢ Ubuntu 20.04, 18.04 LTS
➢ Debian 9
➢ RHEL 7 on IBM Power8/9 (LE)

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7
EFM Architecture
EPAS/PG EPAS/PG
Primary Standby Witness
initialize
EFM
EFM EFM
JGroups
Virtual IP

8. Switch-over

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9
Switch over
EPAS/PG EPAS/PG
Primary Standby Witness
EFM
EFM EFM
JGroups
Virtual IP

10. Failover

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11
Failover
EPAS/PG EPAS/PG
Primary Standby Witness
EFM
EFM EFM
JGroups
Virtual IP

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12
Demonstration Environment
❑ IPs
➢ Primary node – 192.168.156.71
➢ Standby node – 192.168.156.72
➢ Witness node – 192.168.156.73
➢ Virtual IP – 192.168.156.70
❑ OS
➢ CentOS 7.7
❑ Database
➢ EPAS 13
❑ Failover Manager
➢ EFM 4.2

13. Live demo

14. Q & A

15. Thank you!