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The Top 9 Percona Toolkit Tools that Can Make Your Job Easier

Daniel Nichter May 7, 2014

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Overview

• Advice for getting the most from this talk

• What is Percona Toolkit?

• Survey of 9 tools

• Summary

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Advice for getting the most from this talk

• Avoid taking detailed notes; everything and more is already online

• Unanswered questions are OK; answers and more are already online

• It’s a survey; let it spark ideas

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What is Percona Toolkit?

• Collection of command-line tools for MySQL, Percona Server, and MariaDB – For a wide range of MySQL DBA tasks

• Professionally developed, supported, and maintained by Percona

• 6 years mature, thousands of tests, 20 testing environments, 2 full-time developers

• Free, open-source percona.com/software/percona-toolkit

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Survey of 9 tools: pt-archiver (1)

• “Archive rows from a MySQL table into another table or a file”

–Remove useless data, safely and slowly

• Benefits:

–Faster queries

–Easier backups

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Survey of 9 tools: pt-duplicate-key-checker (2)

• “Find duplicate indexes and foreign keys on MySQL tables”

–Remove useless indexes, safely

• Benefits:

–Simpler tables

–Faster INSERTs

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Survey of 9 tools: pt-mysql-summary (3)

• “Summarize MySQL information nicely”

–MySQL tricorder

• Benefits:

–Easily learn about a MySQL server

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Survey of 9 tools: pt-summary (4)

• “Summarize system information nicely”

–System tricorder

• Benefits:

–Easily learn about a system

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Survey of 9 tools: pt-online-schema-change (5)

• “ALTER tables without locking them”

–Hot online ALTER TABLE

• Benefits:

–Zero downtime

–Low impact

–Tries and retries

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Survey of 9 tools: pt-query-digest (6)

• “Analyze MySQL queries from logs, processlist, and tcpdump”

–Find slow queries

• Benefits:

–#1 performance optimization task: find and fix slow queries

–Track and review queries

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Survey of 9 tools: pt-stalk (7)

• “Collect forensic data about MySQL when problems occur”

–Postmortem analysis of MySQL problem

• Benefits:

–Never sleeps, so you can

–Collects a lot of vital data

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Survey of 9 tools: pt-table-checksum (8)

• “Verify MySQL replication integrity”

–Find slaves with incorrect data

• Benefits:

–Important knowledge for very little effort

–Knowing a problem exists is the first step towards fixing it

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Survey of 9 tools: pt-table-sync (9)

• “Synchronize MySQL table data efficiently”

–Fix slaves with incorrect data

• Benefits:

–Easily fix problems found by pt-table-checksum

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Summary

1. pt-archiver: Remove useless data

2. pt-duplicate-key-checkers: Remove useless indexes

3. pt-mysql-summary: Learn about a MySQL server

4. pt-summary: Learn about a system

5. pt-online-schema-change: Hot online ALTER TABLE

6. pt-query-digest: Find slow queries

7. pt-stalk: Collect vital data for postmortem analysis

8. pt-table-checksum: Find slaves with incorrect data

9. pt-table-sync: Fix slaves with incorrect data

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Thank You

percona.com/software/percona-toolkit

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