- PostgreSQL 9 High Availability Cookbook
- Table of Contents
- PostgreSQL 9 High Availability Cookbook
- Credits
- About the Author
- About the Reviewers
- www.PacktPub.com
- Preface
- 1. Hardware Planning
- 2. Handling and Avoiding Downtime
- Introduction
- Determining acceptable losses
- Configuration – getting it right the first time
- Configuration – managing scary settings
- Identifying important tables
- Defusing cache poisoning
- Exploring the magic of virtual IPs
- Terminating rogue connections
- Reducing contention with concurrent indexes
- Managing system migrations
- Managing software upgrades
- Mitigating the impact of hardware failure
- Applying bonus kernel tweaks
- 3. Pooling Resources
- Introduction
- Determining connection costs and limits
- Installing PgBouncer
- Configuring PgBouncer safely
- Connecting to PgBouncer
- Listing PgBouncer server connections
- Listing PgBouncer client connections
- Evaluating PgBouncer pool health
- Installing pgpool
- Configuring pgpool for master/slave mode
- Testing a write query on pgpool
- Swapping active nodes with pgpool
- Combining the power of PgBouncer and pgpool
- 4. Troubleshooting
- Introduction
- Performing triage
- Installing common statistics packages
- Evaluating the current disk performance with iostat
- Tracking I/O-heavy processes with iotop
- Viewing past performance with sar
- Correlating performance with dstat
- Interpreting /proc/meminfo
- Examining /proc/net/bonding/bond0
- Checking the pg_stat_activity view
- Checking the pg_stat_statements view
- Debugging with strace
- Logging checkpoints properly
- 5. Monitoring
- Introduction
- Figuring out what to monitor
- Installing and configuring Nagios
- Configuring Nagios to monitor a database host
- Enhancing Nagios with check_mk
- Getting to know check_postgres
- Installing and configuring collectd
- Adding a custom PostgreSQL monitor to collectd
- Installing and configuring Graphite
- Adding collectd data to Graphite
- Building a graph in Graphite
- Customizing a Graphite graph
- Creating a Graphite dashboard
- 6. Replication
- Introduction
- Deciding what to copy
- Securing the WAL stream
- Setting up a hot standby
- Upgrading to asynchronous replication
- Bulletproofing with synchronous replication
- Faking replication with pg_receivexlog
- Setting up Slony
- Copying a few tables with Slony
- Setting up Bucardo
- Copying a few tables with Bucardo
- Setting up Londiste
- Copying a few tables with Londiste
- 7. Replication Management Tools
- Introduction
- Deciding when to use third-party tools
- Installing and configuring Barman
- Backing up a database with Barman
- Restoring a database with Barman
- Installing and configuring OmniPITR
- Managing WAL files with OmniPITR
- Installing and configuring repmgr
- Cloning a database with repmgr
- Swapping active nodes with repmgr
- Installing and configuring walctl
- Cloning a database with walctl
- Managing WAL files with walctl
- 8. Advanced Stack
- Introduction
- Preparing systems for the stack
- Getting started with the Linux Volume Manager
- Adding block-level replication
- Incorporating the second LVM layer
- Verifying a DRBD filesystem
- Correcting a DRBD split brain
- Formatting an XFS filesystem
- Tweaking XFS performance
- Maintaining an XFS filesystem
- Using LVM snapshots
- Switching live stack systems
- Detaching a problematic node
- 9. Cluster Control
- Introduction
- Installing the components
- Configuring Corosync
- Preparing startup services
- Starting with base options
- Adding DRBD to cluster management
- Adding LVM to cluster management
- Adding XFS to cluster management
- Adding PostgreSQL to cluster management
- Adding a virtual IP to hide the cluster
- Adding an e-mail alert
- Grouping associated resources
- Combining and ordering related actions
- Performing a managed resource migration
- Using an outage to test migration
- 10. Data Distribution
- Introduction
- Identifying horizontal candidates
- Setting up a foreign PostgreSQL server
- Mapping a remote user
- Creating a foreign table
- Using a foreign table in a query
- Optimizing foreign table access
- Transforming foreign tables into local tables
- Creating a scalable nextval replacement
- Building a sharding API
- Talking to the right shard
- Moving a shard to another server
- Index
Author
Shaun M. Thomas
Reviewers
Hans-Jürgen Schönig
Sheldon E. Strauch
Vasilis Ventirozos
Tomas Vondra
Acquisition Editors
Anthony Albuquerque
Harsha Bharwani
Content Development Editor
Sriram Neelakantan
Technical Editor
Tanvi Bhatt
Copy Editors
Janbal Dharmaraj
Sayanee Mukherjee
Karuna Narayanan
Project Coordinator
Kartik Vedam
Proofreaders
Maria Gould
Ameesha Green
Paul Hindle
Indexers
Hemangini Bari
Tejal Soni
Priya Subramani
Graphics
Sheetal Aute
Disha Haria
Abhinash Sahu
Production Coordinator
Melwyn D'sa
Cover Work
Melwyn D'sa
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