Deadly Sins of MySQL Operations

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That was only 8 deadly sins! • Okay, can we say it’s 10 8 ? • Just kidding – can you suggest any other sins? – SET GLOBAL variables without edi,ng my.cnf – Upda,ng mysql.user without FLUSH PRIVILEGES – Se{ng different values in my.cnf on master and slave that is used for failover
Bonus deadly sin • Not going to Percona Live – Learning from your peers and community! – You’ve just fixed that one – Remember Percona Live UK, Nov. 3-‐4, 2014 – h[p://www.percona.com/live
Page 1 and 2:
10 Deadly Sins of MySQL Databa
Page 3:
Who Changed the Config? • Data
Page 6 and 7:
More Readable • Your config fi
Page 8 and 9:
MySQL Opera,ons Mistakes ABANDONE
Page 10 and 11:
Abandoned Experiments • Change
Page 12 and 13: Leave It Alone • Defaults are
Page 14 and 15: MySQL Opera,ons Mistakes AIMLESS
Page 16 and 17: Step 1 • Choose a measurable
Page 18 and 19: Step 3 • Research the range o
Page 20 and 21: Tools • Use pt-mext for ad ho
Page 22 and 23: MySQL Opera,ons Mistakes BRITTLE
Page 24 and 25: False Posi8ves • Reviewing a s
Page 26 and 27: How to Verify? • Restore compl
Page 28 and 29: Don’t think of a backup stra
Page 31 and 32: Replica(on Dri\ Happens • Data
Page 33: Solu8ons to Prevent Data Dri\
Page 36: MySQL Opera,ons Mistakes INDEX H
Page 39 and 40: Too Many Indexes • Consumes sp
Page 41 and 42: Duplicate Indexes • MySQL allow
Page 43 and 44: Detec8ng Duplicate Indexes • My
Page 45 and 46: Unused Indexes • Consume more
Page 47 and 48: Detec8ng Unused Indexes • Use
Page 49 and 50: Clean Up Regularly • Check for
Page 52 and 53: Types of BoYlenecks Disk-‐Bou
Page 54 and 55: Measure Capacity • Disk size c
Page 56 and 57: Test Disk Health • Use smartct
Page 58 and 59: Service Interrup8ons • ALTER TAB
Page 60 and 61: Solu8ons for Upgrades • MySQL
Page 64 and 65: Thank You! • Please remember t
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Deadly Sins of MySQL Operations

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