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MySQL 5.7 Reference Manual: NDB Cluster 7.5 & 7.6
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更新于2024-07-19
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"MySQL 5.7参考手册5.7.20版,涵盖MySQL NDB Cluster 7.5和7.6"
MySQL 5.7参考手册是一部详尽的文档,它详细介绍了从MySQL 5.7.0到5.7.21的所有版本,以及基于NDB Cluster 7.5版本的5.7.20-ndb-7.5.9。这个手册不仅适用于MySQL服务器的核心功能,也涵盖了与NDB Cluster相关的特性,NDB Cluster是一种高可用性、高性能的分布式存储系统。
手册中提到,MySQL 5.7包含了一系列特性,但并非所有这些特性都会出现在每个版本或每个许可版本中。如果你对所使用的MySQL 5.7版本包含哪些特性有疑问,应参考你的许可证协议或联系Oracle的销售代表。这意味着不同的用户可能根据他们的许可协议会有不同的功能体验。
手册还指出,为了了解每个版本的具体更新内容,可以查阅MySQL 5.7的发行说明。这些说明通常会列出新版本的改进、修复的bug以及其他重要变动,对于跟踪MySQL的最新进展非常有帮助。
对于法律信息,手册提供了相关的法律条款和通知,这对于理解使用MySQL时的合规性要求至关重要。此外,如果在使用MySQL过程中遇到问题,手册建议访问MySQL论坛或邮件列表,与其他MySQL用户交流讨论,这是一个获取技术支持的有效途径。
MySQL的文档库提供了更多关于MySQL产品的额外资料,包括不同语言的翻译版本和各种格式的下载选项,如HTML和PDF,这使得用户可以根据自己的需求选择最适合的阅读方式。
最后,手册提到了授权信息,强调了MySQL 5.7的许可条件。这涉及到使用MySQL软件的法律细节,包括开源和商业许可的区别,对于企业用户尤其重要,因为他们需要确保其使用符合MySQL的许可条款。
这份MySQL 5.7参考手册是开发者、数据库管理员和系统架构师的重要参考资料,它提供了关于MySQL 5.7及NDB Cluster 7.5和7.6的全面技术信息,帮助用户理解和利用这些技术来构建高效、稳定的数据库解决方案。
MySQL 5.7 Reference Manual
xvi
16.1.3 Replication with Global Transaction Identifiers ................................................ 2536
16.1.4 MySQL Multi-Source Replication ................................................................... 2546
16.1.5 Changing Replication Modes on Online Servers ............................................. 2550
16.1.6 Replication and Binary Logging Options and Variables .................................... 2556
16.1.7 Common Replication Administration Tasks ..................................................... 2642
16.2 Replication Implementation ...................................................................................... 2644
16.2.1 Replication Formats ...................................................................................... 2645
16.2.2 Replication Implementation Details ................................................................ 2652
16.2.3 Replication Channels .................................................................................... 2654
16.2.4 Replication Relay and Status Logs ................................................................ 2657
16.2.5 How Servers Evaluate Replication Filtering Rules ........................................... 2662
16.3 Replication Solutions ............................................................................................... 2669
16.3.1 Using Replication for Backups ....................................................................... 2670
16.3.2 Handling an Unexpected Halt of a Replication Slave ....................................... 2673
16.3.3 Using Replication with Different Master and Slave Storage Engines ................. 2675
16.3.4 Using Replication for Scale-Out ..................................................................... 2676
16.3.5 Replicating Different Databases to Different Slaves ........................................ 2678
16.3.6 Improving Replication Performance ................................................................ 2679
16.3.7 Switching Masters During Failover ................................................................. 2680
16.3.8 Setting Up Replication to Use Encrypted Connections .................................... 2682
16.3.9 Semisynchronous Replication ........................................................................ 2683
16.3.10 Delayed Replication .................................................................................... 2689
16.4 Replication Notes and Tips ...................................................................................... 2689
16.4.1 Replication Features and Issues .................................................................... 2689
16.4.2 Replication Compatibility Between MySQL Versions ....................................... 2716
16.4.3 Upgrading a Replication Setup ...................................................................... 2716
16.4.4 Troubleshooting Replication .......................................................................... 2718
16.4.5 How to Report Replication Bugs or Problems ................................................. 2719
17 Group Replication .............................................................................................................. 2721
17.1 Group Replication Background ................................................................................. 2722
17.1.1 Replication Technologies ............................................................................... 2722
17.1.2 Group Replication Use Cases ....................................................................... 2724
17.1.3 Group Replication Details .............................................................................. 2725
17.2 Getting Started ........................................................................................................ 2726
17.2.1 Deploying Group Replication in Single-Primary Mode ...................................... 2726
17.3 Monitoring Group Replication ................................................................................... 2736
17.3.1 Replication_group_member_stats .................................................................. 2736
17.3.2 Replication_group_members ......................................................................... 2737
17.3.3 Replication_connection_status ....................................................................... 2737
17.3.4 Replication_applier_status ............................................................................. 2738
17.3.5 Group Replication Server States .................................................................... 2738
17.4 Group Replication Operations .................................................................................. 2739
17.4.1 Deploying in Multi-Primary or Single-Primary Mode ......................................... 2739
17.4.2 Tuning Recovery .......................................................................................... 2741
17.4.3 Network Partitioning ...................................................................................... 2742
17.4.4 Using MySQL Enterprise Backup with Group Replication ................................ 2747
17.5 Group Replication Security ....................................................................................... 2749
17.5.1 IP Address Whitelisting ................................................................................. 2749
17.5.2 Secure Socket Layer Support (SSL) .............................................................. 2750
17.5.3 Virtual Private Networks (VPN) ...................................................................... 2752
17.6 Group Replication System Variables ......................................................................... 2752
17.7 Requirements and Limitations .................................................................................. 2764
17.7.1 Group Replication Requirements ................................................................... 2764
17.7.2 Group Replication Limitations ........................................................................ 2766
17.8 Frequently Asked Questions .................................................................................... 2767
17.9 Group Replication Technical Details ......................................................................... 2769
17.9.1 Group Replication Plugin Architecture ............................................................ 2769
17.9.2 The Group .................................................................................................... 2771
MySQL 5.7 Reference Manual
xvii
17.9.3 Data Manipulation Statements ....................................................................... 2771
17.9.4 Data Definition Statements ............................................................................ 2771
17.9.5 Distributed Recovery ..................................................................................... 2772
17.9.6 Observability ................................................................................................. 2778
17.9.7 Group Replication Performance ..................................................................... 2779
18 MySQL Shell User Guide ................................................................................................... 2783
18.1 MySQL Shell Features ............................................................................................. 2783
18.2 Getting Started with MySQL Shell ............................................................................ 2785
18.2.1 MySQL Shell Sessions .................................................................................. 2785
18.2.2 MySQL Shell Connections ............................................................................. 2785
18.2.3 MySQL Shell Global Variables ...................................................................... 2790
18.3 MySQL Shell Code Execution .................................................................................. 2792
18.3.1 Interactive Code Execution ............................................................................ 2792
18.3.2 Batch Code Execution .................................................................................. 2794
18.3.3 Output Formats ............................................................................................ 2794
18.3.4 Active Language ........................................................................................... 2797
18.3.5 Batch Mode Made Interactive ........................................................................ 2797
18.4 Configuring MySQL Shell ......................................................................................... 2798
18.4.1 MySQL Shell Commands .............................................................................. 2798
18.5 MySQL Shell Application Log ................................................................................... 2800
18.6 Customizing MySQL Shell ....................................................................................... 2801
18.6.1 Working With Start-Up Scripts ....................................................................... 2802
18.6.2 Adding Module Search Paths ........................................................................ 2802
18.6.3 Overriding the Default Prompt ....................................................................... 2803
19 Using MySQL as a Document Store ................................................................................... 2805
19.1 Preproduction Status — Legal Notice ....................................................................... 2806
19.2 Key Concepts .......................................................................................................... 2806
19.3 Setting Up MySQL as a Document Store .................................................................. 2807
19.3.1 Installing MySQL Shell .................................................................................. 2810
19.3.2 Starting MySQL Shell .................................................................................... 2813
19.4 Quick-Start Guide: MySQL Shell for JavaScript ......................................................... 2813
19.4.1 Introduction ................................................................................................... 2814
19.4.2 Import Database Sample ............................................................................... 2815
19.4.3 MySQL Shell ................................................................................................ 2816
19.4.4 Documents and Collections ........................................................................... 2817
19.4.5 Relational Tables .......................................................................................... 2827
19.4.6 Documents in Tables .................................................................................... 2832
19.5 Quick-Start Guide: MySQL Shell for Python .............................................................. 2833
19.5.1 Introduction ................................................................................................... 2834
19.5.2 Import Database Sample ............................................................................... 2834
19.5.3 MySQL Shell ................................................................................................ 2835
19.5.4 Documents and Collections ........................................................................... 2837
19.5.5 Relational Tables .......................................................................................... 2846
19.5.6 Documents in Tables .................................................................................... 2852
19.6 Quick-Start Guide: MySQL for Visual Studio ............................................................. 2853
19.7 X Plugin .................................................................................................................. 2854
19.7.1 Using Secure Connections with X Plugin ....................................................... 2855
19.7.2 X Plugin Options and Variables ..................................................................... 2855
19.7.3 Monitoring X Plugin ...................................................................................... 2863
20 InnoDB Cluster ................................................................................................................... 2869
20.1 Introducing InnoDB Cluster ...................................................................................... 2869
20.2 Creating an InnoDB Cluster ..................................................................................... 2871
20.3 Sandbox Deployment of InnoDB Cluster ................................................................... 2872
20.4 Production Deployment of InnoDB Cluster ................................................................ 2875
20.5 Using MySQL Router with InnoDB Cluster ................................................................ 2882
20.6 Working with InnoDB Cluster ................................................................................... 2885
20.7 Known Limitations ................................................................................................... 2893
21 MySQL NDB Cluster 7.5 and NDB Cluster 7.6 .................................................................... 2895
MySQL 5.7 Reference Manual
xviii
21.1 NDB Cluster Overview ............................................................................................. 2899
21.1.1 NDB Cluster Core Concepts .......................................................................... 2900
21.1.2 NDB Cluster Nodes, Node Groups, Replicas, and Partitions ............................ 2903
21.1.3 NDB Cluster Hardware, Software, and Networking Requirements .................... 2905
21.1.4 What is New in NDB Cluster ......................................................................... 2907
21.1.5 MySQL Server Using InnoDB Compared with NDB Cluster ............................. 2915
21.1.6 Known Limitations of NDB Cluster ................................................................. 2918
21.2 NDB Cluster Installation ........................................................................................... 2928
21.2.1 The NDB Cluster Auto-Installer ...................................................................... 2930
21.2.2 Installation of NDB Cluster 7.5 on Linux ......................................................... 2946
21.2.3 Installing NDB Cluster on Windows ............................................................... 2955
21.2.4 Initial Configuration of NDB Cluster ............................................................... 2964
21.2.5 Initial Startup of NDB Cluster ........................................................................ 2966
21.2.6 NDB Cluster Example with Tables and Data .................................................. 2967
21.2.7 Safe Shutdown and Restart of NDB Cluster ................................................... 2970
21.2.8 Upgrading and Downgrading NDB Cluster ..................................................... 2971
21.3 Configuration of NDB Cluster ................................................................................... 2973
21.3.1 Quick Test Setup of NDB Cluster .................................................................. 2973
21.3.2 Overview of NDB Cluster Configuration Parameters, Options, and Variables ..... 2975
21.3.3 NDB Cluster Configuration Files .................................................................... 3017
21.3.4 Using High-Speed Interconnects with NDB Cluster ......................................... 3150
21.4 NDB Cluster Programs ............................................................................................ 3151
21.4.1 ndbd — The NDB Cluster Data Node Daemon .............................................. 3151
21.4.2 ndbinfo_select_all — Select From ndbinfo Tables .................................. 3158
21.4.3 ndbmtd — The NDB Cluster Data Node Daemon (Multi-Threaded) ................. 3160
21.4.4 ndb_mgmd — The NDB Cluster Management Server Daemon ......................... 3161
21.4.5 ndb_mgm — The NDB Cluster Management Client ......................................... 3168
21.4.6 ndb_blob_tool — Check and Repair BLOB and TEXT columns of NDB
Cluster Tables ......................................................................................................... 3170
21.4.7 ndb_config — Extract NDB Cluster Configuration Information ...................... 3172
21.4.8 ndb_cpcd — Automate Testing for NDB Development ................................... 3181
21.4.9 ndb_delete_all — Delete All Rows from an NDB Table ............................. 3181
21.4.10 ndb_desc — Describe NDB Tables ............................................................ 3182
21.4.11 ndb_drop_index — Drop Index from an NDB Table ................................... 3187
21.4.12 ndb_drop_table — Drop an NDB Table ................................................... 3188
21.4.13 ndb_error_reporter — NDB Error-Reporting Utility ................................. 3189
21.4.14 ndb_import — Import CSV Data Into NDB ................................................ 3190
21.4.15 ndb_index_stat — NDB Index Statistics Utility ......................................... 3203
21.4.16 ndb_move_data — NDB Data Copy Utility ................................................. 3209
21.4.17 ndb_perror — Obtain NDB error message information ............................... 3211
21.4.18 ndb_print_backup_file — Print NDB Backup File Contents ................... 3213
21.4.19 ndb_print_file — Print NDB Disk Data File Contents .............................. 3213
21.4.20 ndb_print_frag_file — Print NDB Fragment List File Contents .............. 3214
21.4.21 ndb_print_schema_file — Print NDB Schema File Contents .................. 3215
21.4.22 ndb_print_sys_file — Print NDB System File Contents ......................... 3215
21.4.23 ndb_redo_log_reader — Check and Print Content of Cluster Redo Log .... 3215
21.4.24 ndb_restore — Restore an NDB Cluster Backup ....................................... 3218
21.4.25 ndb_select_all — Print Rows from an NDB Table ................................... 3237
21.4.26 ndb_select_count — Print Row Counts for NDB Tables ........................... 3240
21.4.27 ndb_setup.py — Start browser-based Auto-Installer for NDB Cluster .......... 3241
21.4.28 ndb_show_tables — Display List of NDB Tables ....................................... 3244
21.4.29 ndb_size.pl — NDBCLUSTER Size Requirement Estimator ...................... 3246
21.4.30 ndb_top — View CPU usage information for NDB threads ........................... 3248
21.4.31 ndb_waiter — Wait for NDB Cluster to Reach a Given Status ..................... 3252
21.4.32 Options Common to NDB Cluster Programs — Options Common to NDB
Cluster Programs .................................................................................................... 3255
21.5 Management of NDB Cluster ................................................................................... 3260
21.5.1 Summary of NDB Cluster Start Phases .......................................................... 3261
MySQL 5.7 Reference Manual
xix
21.5.2 Commands in the NDB Cluster Management Client ........................................ 3262
21.5.3 Online Backup of NDB Cluster ...................................................................... 3267
21.5.4 MySQL Server Usage for NDB Cluster .......................................................... 3271
21.5.5 Performing a Rolling Restart of an NDB Cluster ............................................. 3273
21.5.6 Event Reports Generated in NDB Cluster ...................................................... 3275
21.5.7 NDB Cluster Log Messages .......................................................................... 3285
21.5.8 NDB Cluster Single User Mode ..................................................................... 3301
21.5.9 Quick Reference: NDB Cluster SQL Statements ............................................. 3302
21.5.10 ndbinfo: The NDB Cluster Information Database ........................................... 3304
21.5.11 INFORMATION_SCHEMA Tables for NDB Cluster ....................................... 3352
21.5.12 NDB Cluster Security Issues ....................................................................... 3353
21.5.13 NDB Cluster Disk Data Tables .................................................................... 3359
21.5.14 Adding NDB Cluster Data Nodes Online ...................................................... 3367
21.5.15 Distributed MySQL Privileges for NDB Cluster .............................................. 3378
21.5.16 NDB API Statistics Counters and Variables .................................................. 3381
21.6 NDB Cluster Replication .......................................................................................... 3392
21.6.1 NDB Cluster Replication: Abbreviations and Symbols ..................................... 3393
21.6.2 General Requirements for NDB Cluster Replication ........................................ 3394
21.6.3 Known Issues in NDB Cluster Replication ...................................................... 3395
21.6.4 NDB Cluster Replication Schema and Tables ................................................. 3402
21.6.5 Preparing the NDB Cluster for Replication ..................................................... 3405
21.6.6 Starting NDB Cluster Replication (Single Replication Channel) ........................ 3407
21.6.7 Using Two Replication Channels for NDB Cluster Replication .......................... 3409
21.6.8 Implementing Failover with NDB Cluster Replication ....................................... 3409
21.6.9 NDB Cluster Backups With NDB Cluster Replication ....................................... 3411
21.6.10 NDB Cluster Replication: Multi-Master and Circular Replication ...................... 3417
21.6.11 NDB Cluster Replication Conflict Resolution ................................................. 3421
21.7 NDB Cluster Release Notes ..................................................................................... 3434
22 Partitioning ......................................................................................................................... 3437
22.1 Overview of Partitioning in MySQL ........................................................................... 3439
22.2 Partitioning Types .................................................................................................... 3442
22.2.1 RANGE Partitioning ...................................................................................... 3444
22.2.2 LIST Partitioning ........................................................................................... 3448
22.2.3 COLUMNS Partitioning ................................................................................. 3450
22.2.4 HASH Partitioning ......................................................................................... 3458
22.2.5 KEY Partitioning ........................................................................................... 3461
22.2.6 Subpartitioning .............................................................................................. 3463
22.2.7 How MySQL Partitioning Handles NULL ........................................................ 3466
22.3 Partition Management .............................................................................................. 3470
22.3.1 Management of RANGE and LIST Partitions .................................................. 3471
22.3.2 Management of HASH and KEY Partitions ..................................................... 3477
22.3.3 Exchanging Partitions and Subpartitions with Tables ....................................... 3478
22.3.4 Maintenance of Partitions .............................................................................. 3485
22.3.5 Obtaining Information About Partitions ........................................................... 3487
22.4 Partition Pruning ...................................................................................................... 3489
22.5 Partition Selection .................................................................................................... 3492
22.6 Restrictions and Limitations on Partitioning ............................................................... 3498
22.6.1 Partitioning Keys, Primary Keys, and Unique Keys ......................................... 3504
22.6.2 Partitioning Limitations Relating to Storage Engines ........................................ 3507
22.6.3 Partitioning Limitations Relating to Functions .................................................. 3508
22.6.4 Partitioning and Locking ................................................................................ 3509
23 Stored Programs and Views ............................................................................................... 3511
23.1 Defining Stored Programs ........................................................................................ 3512
23.2 Using Stored Routines (Procedures and Functions) ................................................... 3513
23.2.1 Stored Routine Syntax .................................................................................. 3513
23.2.2 Stored Routines and MySQL Privileges ......................................................... 3514
23.2.3 Stored Routine Metadata .............................................................................. 3514
23.2.4 Stored Procedures, Functions, Triggers, and LAST_INSERT_ID() .................... 3515
MySQL 5.7 Reference Manual
xx
23.3 Using Triggers ......................................................................................................... 3515
23.3.1 Trigger Syntax and Examples ........................................................................ 3516
23.3.2 Trigger Metadata .......................................................................................... 3519
23.4 Using the Event Scheduler ...................................................................................... 3520
23.4.1 Event Scheduler Overview ............................................................................ 3520
23.4.2 Event Scheduler Configuration ...................................................................... 3521
23.4.3 Event Syntax ................................................................................................ 3523
23.4.4 Event Metadata ............................................................................................ 3523
23.4.5 Event Scheduler Status ................................................................................. 3524
23.4.6 The Event Scheduler and MySQL Privileges .................................................. 3525
23.5 Using Views ............................................................................................................ 3527
23.5.1 View Syntax ................................................................................................. 3528
23.5.2 View Processing Algorithms .......................................................................... 3528
23.5.3 Updatable and Insertable Views .................................................................... 3529
23.5.4 The View WITH CHECK OPTION Clause ...................................................... 3532
23.5.5 View Metadata .............................................................................................. 3533
23.6 Access Control for Stored Programs and Views ........................................................ 3533
23.7 Binary Logging of Stored Programs .......................................................................... 3535
24 INFORMATION_SCHEMA Tables ....................................................................................... 3541
24.1 The INFORMATION_SCHEMA CHARACTER_SETS Table ....................................... 3544
24.2 The INFORMATION_SCHEMA COLLATIONS Table ................................................. 3545
24.3 The INFORMATION_SCHEMA COLLATION_CHARACTER_SET_APPLICABILITY
Table .............................................................................................................................. 3545
24.4 The INFORMATION_SCHEMA COLUMNS Table ..................................................... 3546
24.5 The INFORMATION_SCHEMA COLUMN_PRIVILEGES Table .................................. 3547
24.6 The INFORMATION_SCHEMA ENGINES Table ....................................................... 3547
24.7 The INFORMATION_SCHEMA EVENTS Table ......................................................... 3548
24.8 The INFORMATION_SCHEMA FILES Table ............................................................. 3551
24.9 The INFORMATION_SCHEMA GLOBAL_STATUS and SESSION_STATUS Tables .... 3557
24.10 The INFORMATION_SCHEMA GLOBAL_VARIABLES and SESSION_VARIABLES
Tables ............................................................................................................................. 3558
24.11 The INFORMATION_SCHEMA KEY_COLUMN_USAGE Table ................................ 3559
24.12 The INFORMATION_SCHEMA ndb_transid_mysql_connection_map Table .............. 3560
24.13 The INFORMATION_SCHEMA OPTIMIZER_TRACE Table ..................................... 3561
24.14 The INFORMATION_SCHEMA PARAMETERS Table ............................................. 3561
24.15 The INFORMATION_SCHEMA PARTITIONS Table ................................................ 3561
24.16 The INFORMATION_SCHEMA PLUGINS Table ...................................................... 3564
24.17 The INFORMATION_SCHEMA PROCESSLIST Table ............................................. 3565
24.18 The INFORMATION_SCHEMA PROFILING Table .................................................. 3566
24.19 The INFORMATION_SCHEMA REFERENTIAL_CONSTRAINTS Table .................... 3567
24.20 The INFORMATION_SCHEMA ROUTINES Table ................................................... 3568
24.21 The INFORMATION_SCHEMA SCHEMATA Table .................................................. 3569
24.22 The INFORMATION_SCHEMA SCHEMA_PRIVILEGES Table ................................. 3569
24.23 The INFORMATION_SCHEMA STATISTICS Table ................................................. 3570
24.24 The INFORMATION_SCHEMA TABLES Table ....................................................... 3570
24.25 The INFORMATION_SCHEMA TABLESPACES Table ............................................ 3572
24.26 The INFORMATION_SCHEMA TABLE_CONSTRAINTS Table ................................ 3572
24.27 The INFORMATION_SCHEMA TABLE_PRIVILEGES Table .................................... 3573
24.28 The INFORMATION_SCHEMA TRIGGERS Table ................................................... 3573
24.29 The INFORMATION_SCHEMA USER_PRIVILEGES Table ..................................... 3575
24.30 The INFORMATION_SCHEMA VIEWS Table ......................................................... 3575
24.31 InnoDB INFORMATION_SCHEMA Tables .............................................................. 3577
24.31.1 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE Table ................... 3577
24.31.2 The INFORMATION_SCHEMA INNODB_BUFFER_PAGE_LRU Table .......... 3579
24.31.3 The INFORMATION_SCHEMA INNODB_BUFFER_POOL_STATS Table ...... 3581
24.31.4 The INFORMATION_SCHEMA INNODB_CMP and INNODB_CMP_RESET
Tables ..................................................................................................................... 3583
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