pt-mysql-summary - Percona

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Example $ <strong>pt</strong>-online-schema-change --alter "ADD COLUMN Dummy INT NOT NULL" h=localhost,D=imdb,t=cast_info Exiting without altering ìmdb`.`cast_info` because neither --dry-run nor -execute was specified. Please read the tool's documentation carefully before using this tool. Tuesday, December 4, 2012 www.percona.com
Example $ <strong>pt</strong>-online-schema-change --alter "ADD COLUMN Dummy INT NOT NULL" h=localhost,D=imdb,t=cast_info --execute Altering ìmdb`.`cast_info`... Creating new table... Created new table imdb._cast_info_new OK. Altering new table... Altered ìmdb`.`_cast_info_new` OK. Creating triggers... Created triggers OK. Copying approximately 22545051 rows... Copying ìmdb`.`cast_info`: 10% 04:05 remain Copying ìmdb`.`cast_info`: 19% 04:07 remain Copying ìmdb`.`cast_info`: 28% 03:44 remain Copying ìmdb`.`cast_info`: 37% 03:16 remain Copying ìmdb`.`cast_info`: 47% 02:47 remain Copying ìmdb`.`cast_info`: 56% 02:18 remain Copying ìmdb`.`cast_info`: 64% 01:53 remain Copying ìmdb`.`cast_info`: 73% 01:28 remain Copying ìmdb`.`cast_info`: 82% 00:55 remain Copying ìmdb`.`cast_info`: 91% 00:26 remain Copied rows OK. Swapping tables... Swapped original and new tables OK. Dropping old table... Dropped old table ìmdb`.`_cast_info_old` OK. Dropping triggers... Dropped triggers OK. Successfully altered ìmdb`.`cast_info`. Tuesday, December 4, 2012 www.percona.com
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Survey of Percona Toolkit: Command-
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Tuesday, December 4, 2012 Installin
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•pt-summary Top Nine Popular Tool
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pt-summary • Summarize system inf
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pt-summary # Memory ###############
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pt-summary # Network Config #######
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Tuesday, December 4, 2012 pt-mysql-
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pt-mysql-summary $ pt-mysql-summary
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pt-mysql-summary # Status Counters
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pt-mysql-summary # Schema #########
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pt-mysql-summary # InnoDB #########
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pt-mysql-summary # MyISAM #########
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pt-mysql-summary # Configuration Fi
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• Wait for a problem to occur, th
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$ pt-stalk --no-stalk Ad Hoc Usage
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Function, Variable & Threshold •
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Function, Variable & Threshold •
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Example: Watch Processlist • Watc
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Tuesday, December 4, 2012 pt-archiv
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Move Data • Copy data from one My
Page 41 and 42: Purge Data • Delete orphan rows (
Page 43 and 44: Tuesday, December 4, 2012 pt-query-
Page 45 and 46: Report Output (1) $ pt-query-digest
Page 47 and 48: Report Output (3) # Query 1: 6.77 Q
Page 49 and 50: Query Review • Save each query ty
Page 51 and 52: Cautions • Processing large logs
Page 53 and 54: pt-duplicate-key-checker • Find d
Page 55 and 56: pt-duplicate-key-checker # Db.syste
Page 57 and 58: Data Drift • MySQL slaves may not
Page 59 and 60: Tuesday, December 4, 2012 master Vi
Page 67 and 68: Let’s Break It • Delete 5% of d
Page 69 and 70: Check the Slave(s) mysql> SELECT db
Page 71 and 72: pt-table-sync • Synchronize MySQL
Page 73 and 74: Method 2: Sync Slave to Master $ pt
Page 75 and 76: Method 3: Sync Two Hosts •Now let
Page 77 and 78: pt-online-schema-change • Perform
Page 79 and 80: How pt-osc Does ALTER TABLE • Loc
Page 81 and 82: Tuesday, December 4, 2012 Visualize
Page 83 and 84: Tuesday, December 4, 2012 cast_info
Page 91: Tuesday, December 4, 2012 cast_info
Page 95 and 96: Limitations • You can’t alter a
Page 97 and 98: Cautions • Execute pt-online-sche
Page 99 and 100: Resources • Product site: http://
Page 101 and 102: pt-align pt-config-diff There Are M
Page 103 and 104: diamond platinum exhibitors and the
Page 105: Tuesday, December 4, 2012 License a
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pt-mysql-summary - Percona

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