1 Star 0 Fork 23

般若菠萝蜜 / gt-checksum

forked from 万里数据库 / gt-checksum 
加入 Gitee
与超过 1200万 开发者一起发现、参与优秀开源项目,私有仓库也完全免费 :)
免费加入
克隆/下载
贡献代码
同步代码
取消
提示: 由于 Git 不支持空文件夾,创建文件夹后会生成空的 .keep 文件
Loading...
README
Apache-2.0

关于 gt-checksum

gt-checksum是GreatSQL社区开源的一款静态数据库校验修复工具,支持MySQL、Oracle等主流数据库。

特性


MySQL DBA最常用的数据校验&修复工具应该是Percona Toolkit中的pt-table-checksum和pt-table-sync这两个工具,不过这两个工具并不支持MySQL MGR架构,以及国内常见的上云下云业务场景,还有MySQL、Oracle间的异构数据库等多种场景。

GreatSQL开源的gt-checksum工具可以满足上述多种业务需求场景,解决这些痛点。

gt-checksum工具支持以下几种常见业务需求场景:

  1. MySQL主从复制:主从复制中断后较长时间才发现,且主从间差异的数据量太多,这时候通常基本上只能重建复制从库,如果利用pt-table-checksum先校验主从数据一致性后,再利用pt-table-sync工具修复差异数据,这个过程要特别久,时间代价太大。
  2. MySQL MGR组复制:MySQL MGR因故崩溃整个集群报错退出,或某个节点异常退出,在恢复MGR集群时一般要面临着先检查各节点间数据一致性的需求,这时通常为了省事会选择其中一个节点作为主节点,其余从节点直接复制数据重建,这个过程要特别久,时间代价大。
  3. 上云下云业务场景:目前上云下云的业务需求很多,在这个过程中要进行大量的数据迁移及校验工作,如果出现字符集改变导致特殊数据出现乱码或其他的情况,如果数据迁移工具在迁移过程中出现bug或者数据异常而又迁移成功,此时都需要在迁移结束后进行一次数据校验才放心。
  4. 异构迁移场景:有时我们会遇到异构数据迁移场景,例如从Oracle迁移到MySQL,通常存在字符集不同,以及数据类型不同等情况,也需要在迁移结束后进行一次数据校验才放心。
  5. 定期校验场景:作为DBA在维护高可用架构中为了保证主节点出现异常后能够快速放心切换,就需要保证各节点间的数据一致性,需要定期执行数据校验工作。

以上这些场景,都可以利用gt-chcksum工具来满足。

下载


可以 这里 下载预编译好的二进制文件包,已经在Ubuntu、CentOS、RHEL等多个下测试通过。

如果需要校验Oracle数据库,则还需要先下载Oracle数据库相应版本的驱动程序,并配置驱动程序使之生效。例如:待校验的数据库为Oracle 11-2,则要下载Oracle 11-2的驱动程序,并使之生效,否则连接Oracle会报错。详细方法请见下方内容:下载配置Oracle驱动程序

快速运行


# 不带任何参数
shell> ./gt-checksum
If no parameters are loaded, view the command with --help or -h

# 查看版本号
shell> ./gt-checksum -v
gt-checksum version 1.2.1

# 查看使用帮助
shell> ./gt-checksum -h
NAME:
   gt-checksum - A opensource table and data checksum tool by GreatSQL

USAGE:
   gt-checksum [global options] command [command options] [arguments...]
...

# 数据库授权
# 想要运行gt-checksum工具,需要至少授予以下几个权限
# MySQL端
# 1.全局权限
#  a.`REPLICATION CLIENT`
#  b.`SESSION_VARIABLES_ADMIN`,如果是MySQL 8.0版本的话,MySQL 5.7版本不做这个要求
# 2.校验数据对象
#  a.如果`datafix=file`,则只需要`SELECT`权限
#  b.如果`datafix=table`,则需要`SELECT、INSERT、DELETE`权限,如果还需要修复表结构不一致的情况,则需要`ALTER`权限
#
# 假设现在要对db1.t1做校验和修复,则可授权如下

mysql> GRANT REPLICATION CLIENT, SESSION_VARIABLES_ADMIN ON *.* to ...;
mysql> GRANT SELECT, INSERT, DELETE ON db1.t1 to ...;

# Oracle端
# 1.全局权限
#  a.`SELECT ANY DICTIONARY`
# 2.校验数据对象
#  a.如果`datafix=file`,则只需要`SELECT ANY TABLE`权限
#  b.如果`datafix=table`,则需要`SELECT ANY TABLE、INSERT ANY TABLE、DELETE ANY TABLE`权限

# 指定配置文件,开始执行数据校验,示例:
shell> ./gt-checksum -f ./gc.conf
-- gt-checksum init configuration files --
-- gt-checksum init log files --
-- gt-checksum init check parameter --
-- gt-checksum init check table name --
-- gt-checksum init check table column --
-- gt-checksum init check table index column --
-- gt-checksum init source and dest transaction snapshoot conn pool --
-- gt-checksum init cehck table query plan and check data --
begin checkSum index table db1.t1
[█████████████████████████████████████████████████████████████████████████████████████████████████████████████████]113%  task:     678/600
table db1.t1 checksum complete

** gt-checksum Overview of results **
Check time:  73.81s (Seconds)
Schema  Table                   IndexCol                                checkMod        Rows            Differences     Datafix
db1     t1                      ol_w_id,ol_d_id,ol_o_id,ol_number       rows            5995934,5995918 yes             file


# 使用命令行传参方式执行数据校验
shell> ./gt-checksum -S type=mysql,user=checksum,passwd=Checksum@123,host=172.16.0.1,port=3306,charset=utf8 -D type=mysql,user=checksum,passwd=Checksum@123,host=172.16.0.2,port=3306,charset=utf8 -t test.t2 -nit yes
-- gt-checksum init configuration files --
-- gt-checksum init log files --
-- gt-checksum init check parameter --
-- gt-checksum init check table name --
-- gt-checksum init check table column --
-- gt-checksum init check table index column --
-- gt-checksum init source and dest transaction snapshoot conn pool --
-- gt-checksum init cehck table query plan and check data --
begin checkSum index table SCOTT.A5
[]100%  task:       1/1
table SCOTT.A5 checksum complete

** gt-checksum Overview of results **
Check time:  0.29s (Seconds)
Schema  Table   IndexCol        checkMod        Rows    Differences     Datafix
test    t2      id              rows            10,10   no              file

下载配置Oracle驱动程序


如果需要校验Oracle数据库,则还需要先下载Oracle数据库相应版本的驱动程序。例如:待校验的数据库为Oracle 11-2,则要下载Oracle 11-2的驱动程序,并使之生效,否则连接Oracle会报错。

下载Oracle Instant Client

https://www.oracle.com/database/technologies/instant-client/downloads.html 下载免费的Basic或Basic Light软件包。

  • oracle basic client, instantclient-basic-linux.x64-11.2.0.4.0.zip

  • oracle sqlplus, instantclient-sqlplus-linux.x64-11.2.0.4.0.zip

  • oracle sdk, instantclient-sdk-linux.x64-11.2.0.4.0.zip

配置oracle client并生效

shell> unzip instantclient-basic-linux.x64-11.2.0.4.0.zip
shell> unzip instantclient-sqlplus-linux.x64-11.2.0.4.0.zip
shell> unzip instantclient-sdk-linux.x64-11.2.0.4.0.zip
shell> mv instantclient_11_2 /usr/local
shell> echo "export LD_LIBRARY_PATH=/usr/local/instantclient_11_2:$LD_LIBRARY_PATH" >> /etc/profile
shell> source /etc/profile

源码编译

gt-checksum工具采用GO语言开发,您可以自行编译生成二进制文件。

编译环境要求使用golang 1.17及以上版本。

请参考下面方法下载源码并进行编译:

shell> git clone https://gitee.com/GreatSQL/gt-checksum.git
shell> go build -o gt-checksum gt-checksum.go
shell> chmod +x gt-checksum
shell> mv gt-checksum /usr/local/bin

也可以直接利用Docker环境编译,在已经准备好Docker运行环境的基础上,执行如下操作即可:

shell> git clone https://gitee.com/GreatSQL/gt-checksum.git
shell> cd gt-checksum
shell> DOCKER_BUILDKIT=1 docker build --build-arg VERSION=v1.2.1 -f Dockerfile -o ./ .
shell> cd gt-checksum-v1.2.1
shell> ./gt-checksum -v
gt-checksum version 1.2.1

这就编译完成并可以开始愉快地玩耍了。

使用文档


版本历史


已知缺陷


截止最新的1.2.1版本中,当表中有多行数据是完全重复的话,可能会导致校验结果不准确,详见 已知缺陷

问题反馈


联系我们


扫码关注微信公众号

输入图片说明

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

简介

gt-checksum是GreatSQL社区开源的一款静态数据库校验修复工具,支持MySQL、Oracle等主流数据库。 展开 收起
Go
Apache-2.0
取消

发行版

暂无发行版

贡献者

全部

近期动态

加载更多
不能加载更多了
Go
1
https://gitee.com/lookingdreamer/gt-checksum.git
git@gitee.com:lookingdreamer/gt-checksum.git
lookingdreamer
gt-checksum
gt-checksum
master

搜索帮助