Various HA and DR setups for Postgres Plus

Advanced Server

27/1/2014

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Contents

• Active – Passive OS HA Clustering

• Log Shipping Replication (Hot Standby Mode)

• Hot Streaming Replication (Hot Standby Mode)

• EDB Postgres Plus Failover Manager

• HA with read scaling (with pg-pool)

• xDB Single Master Replication (SMR)

• xDB Multi Master Replication (MMR)

• Use Cases

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• Using OS Clustering

• Using a shared disk for data

Active – Passive OS HA Clustering

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• Uses WAL (Write Ahead Log)

• Archived WAL is shipped to Hot Standby Node

• Hot Standby node can be used for read scalability

File Based Log Shipping Replication (Hot Standby Mode)

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• Uses WAL (Write Ahead Log)

• WAL is continuously shipped through an opened TCP channel to Hot Standby Node

• Hot Standby node can be used for read scalability

Hot Streaming Replication (Hot Standby Mode)

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EDB Postgres Plus Failover Manager

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Agent Agent

•A solution to aid in the creation of highly available configurations of Postgres

•Monitors the health of a Postgres HA configuration

•Automates the failover process in the event of a failure

•Used in conjunction with Streaming Replication

Postgres Plus Failover Manager

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Slave

Witness

Master

• Using pg-pool

• Using redundant disk for data

• Hot Standby node can be used for read scalability

HA with read scaling (with pg-pool)

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• Trigger based replication

• Publication – Subscription

• Snapshot and Continuous

• Cascading Replication

• Read Scalability

• Master DB can be:• Oracle

• MSSQL

• Postgres Plus Advanced Server

xDB Single Master Replication (SMR)

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• Trigger based replication

• 2 or more Masters can be Sync

• Auto Conflict Detection & Resolution

• Read & Write Scalability

xDB Multi Master Replication (MMR)

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