Book description
Written by a team of well-known PostgreSQL experts, this new edition will cover all the latest updates of PostgreSQL 16 including 12+ new and improved recipes on logging, monitoring, security and high-performance Purchase of the print or Kindle book includes a free PDF eBook
Key Features
- Skill-up as a database administrator by achieving improved query performance, backup, and recovery management, setting up replication and so on
- Get to grips with the essentials of database management with a recipe-based approach using the latest features of PostgreSQL 16
- New and updated recipes on crucial PostgreSQL topics like Monitoring, Logging, Scalability and so on
Book Description
PostgreSQL has seen a huge increase in its customer base in the past few years and is becoming one of the go-to solutions for anyone who has a database-specific challenge. This PostgreSQL book touches on all the fundamentals of Database Administration in a problem-solution format. It is intended to be the perfect desk reference guide.
This new edition focuses on recipes based on the new PostgreSQL 16 release. The additions include handling complex batch loading scenarios with the SQL MERGE statement, security improvements, running Postgres on Kubernetes or with TPA and Ansible, and more. This edition also focuses on certain performance gains, such as query optimization, and the acceleration of specific operations, such as sort. It will help you understand roles, ensuring high availability, concurrency, and replication. It also draws your attention to aspects like validating backups, recovery, monitoring, and scaling aspects. This book will act as a one-stop solution to all your real-world database administration challenges.
By the end of this book, you will be able to manage, monitor, and replicate your PostgreSQL 16 database for efficient administration and maintenance with the best practices from experts.
What you will learn
- Discover how to improve batch data loading with the SQL MERGE statement
- Use logical replication to apply large transactions in parallel
- Improve your back up and recovery performance with server-side compression
- Tackle basic to high-end and real-world PostgreSQL challenges with practical recipes
- Monitor and fine-tune your database with ease
- Learn to navigate the newly introduced features of PostgreSQL 16
- Efficiently secure your PostgreSQL database with new and updated features
Who this book is for
This Postgres book is for database administrators, data architects, database developers, and anyone with an interest in planning and running live production databases using PostgreSQL 14. Those looking for hands-on solutions to any problem associated with PostgreSQL 14 administration will also find this book useful. Some experience with handling PostgreSQL databases will help you to make the most out of this book, however, it is a useful resource even if you are just beginning your Postgres journey
Table of contents
- Preface
-
First Steps
- Introducing PostgreSQL 16
- How to get PostgreSQL
- Connecting to the PostgreSQL server
- Enabling access for network/remote users
- Using the pgAdmin 4 GUI tool
- Using the psql query and scripting tool
- Changing your password securely
- Avoiding hardcoding your password
- Using a connection service file
- Troubleshooting a failed connection
- PostgreSQL in the cloud
- PostgreSQL with Kubernetes
- PostgreSQL with TPA
-
Exploring the Database
- What type of server is this?
- What version is the server?
- What is the server uptime?
- Locating the database server files
- Locating the database server’s message log
- Locating the database’s system identifier
- Listing databases on the database server
- How many tables are there in a database?
- How much disk space does a database use?
- How much memory does a database currently use?
- How much disk space does a table use?
- Which are my biggest tables?
- How many rows are there in a table?
- Quickly estimating the number of rows in a table
- Listing extensions in this database
- Understanding object dependencies
-
Server Configuration
- Read the fine manual (RTFM)
- Planning a new database
- Setting the configuration parameters for the database server
- Setting the configuration parameters in your programs
- Finding the configuration settings for your session
- Finding parameters with non-default settings
- Setting parameters for particular groups of users
- A basic server configuration checklist
- Adding an external module to PostgreSQL
- Using an installed module/extension
- Managing installed extensions
-
Server Control
- An overview of controlling the database server
- Starting the database server manually
- Stopping the server safely and quickly
- Stopping the server in an emergency
- Reloading server configuration files
- Restarting the server quickly
- Preventing new connections
- Restricting users to only one session each
- Pushing users off the system
- Deciding on a design for multitenancy
- Using multiple schemas
- Giving users their own private databases
- Running multiple servers on one system
- Setting up a connection pool
- Accessing multiple servers using the same host and port
- Running multiple PgBouncer on the same port to leverage multiple cores
-
Tables and Data
- Choosing good names for database objects
- Handling objects with quoted names
- Identifying and removing duplicates
- Preventing duplicate rows
- Finding a unique key for a set of data
- Generating test data
- Randomly sampling data
- Loading data from a spreadsheet
- Loading data from flat files
- Making bulk data changes using server-side procedures with transactions
- Dealing with large tables with table partitioning
- Finding good candidates for partition keys
- Consolidating data with MERGE
- Deciding when to use JSON data types
-
Security
- An overview of PostgreSQL security
- The PostgreSQL superuser
- Revoking user access to tables
- Granting user access to a table
- Granting user access to specific columns
- Granting user access to specific rows
- Creating a new user
- Temporarily preventing a user from connecting
- Removing a user without dropping their data
- Checking whether all users have a secure password
- Giving limited superuser powers to specific users
- Auditing database access
- Always knowing which user is logged in
- Integrating with LDAP
- Connecting using encryption (SSL / GSSAPI)
- Using SSL certificates to authenticate
- Mapping external usernames to database roles
- Using column-level encryption
- Setting up cloud security using predefined roles
-
Database Administration
- Writing a script that either succeeds entirely or fails entirely
- Writing a psql script that exits on the first error
- Using psql variables
- Placing query output into psql variables
- Writing a conditional psql script
- Investigating a psql error
- Setting the psql prompt with useful information
- Using pgAdmin for DBA tasks
- Scheduling jobs for regular background execution
- Performing actions on many tables
- Adding/removing columns on a table
- Changing the data type of a column
- Changing the definition of an enum data type
- Adding a constraint concurrently
- Adding/removing schemas
- Moving objects between schemas
- Adding/removing tablespaces
- Moving objects between tablespaces
- Accessing objects in other PostgreSQL databases
- Accessing objects in other foreign databases
- Making views updatable
- Using materialized views
- Using GENERATED data columns
- Using data compression
-
Monitoring and Diagnosis
- Cloud-native monitoring
- Providing PostgreSQL information to monitoring tools
- Real-time viewing using pgAdmin
- Monitoring the PostgreSQL message log
- Checking whether a user is connected
- Checking whether a computer is connected
- Repeatedly executing a query in psql
- Checking which queries are running
- Monitoring the progress of commands
- Checking which queries are active or blocked
- Knowing who is blocking a query
- Killing a specific session
- Knowing whether anybody is using a specific table
- Knowing when a table was last used
- Monitoring I/O statistics
- Usage of disk space by temporary data
- Understanding why queries slow down
- Analyzing the real-time performance of your queries
- Tracking important metrics over time
-
Regular Maintenance
- Controlling automatic database maintenance
- Avoiding auto-freezing
- Removing issues that cause bloat
- Actions for heavy users of temporary tables
- Identifying and fixing bloated tables and indexes
- Monitoring and tuning a vacuum
- Maintaining indexes
- Finding unused indexes
- Carefully removing unwanted indexes
- Planning maintenance
-
Performance and Concurrency
- Finding slow SQL statements
- Finding out what makes SQL slow
- Reducing the number of rows returned
- Simplifying complex SQL queries
- Speeding up queries without rewriting them
- Discovering why a query is not using an index
- Forcing a query to use an index
- Using parallel query
- Using Just-In-Time (JIT) compilation
- Creating time-series tables using partitioning
- Using optimistic locking to avoid long lock waits
- Reporting performance problems
-
Backup and Recovery
- Understanding and controlling crash recovery
- Planning your backups
- Hot logical backup of one database
- Hot logical backup of all databases
- Backup of database object definitions
- A standalone hot physical backup
- Hot physical backups with Barman
- Recovery of all databases
- Recovery to a point in time
- Recovery of a dropped/damaged table
- Recovery of a dropped/damaged database
- Extracting a logical backup from a physical one
- Improving the performance of logical backup/recovery
- Improving the performance of physical backup/recovery
- Validating backups
-
Replication and Upgrades
- Replication concepts
- Replication best practices
- Setting up streaming replication
- Setting up streaming replication security
- Hot Standby and read scalability
- Managing streaming replication
- Using repmgr
- Using replication slots
- Setting up replication with TPA
- Setting up replication with CloudNativePG
- Monitoring replication
- Performance and synchronous replication (sync rep)
- Delaying, pausing, and synchronizing replication
- Logical replication
- EDB Postgres Distributed
- Archiving transaction log data
- Upgrading minor releases
- Major upgrades in-place
- Major upgrades online
- Other Books You May Enjoy
- Index
Product information
- Title: PostgreSQL 16 Administration Cookbook
- Author(s):
- Release date: December 2023
- Publisher(s): Packt Publishing
- ISBN: 9781835460580
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