Centos7部署Seata分布式事务系统并以nacos为配置中心

怼烎@ 2023-06-30 05:26 80阅读 0赞

### 简介 ###

Seata 是阿里巴巴开源的分布式事务中间件，一种分布式事务解决方案，具有高性能和易于使用的微服务架构

### 安装 ###

下载安装包：[https://github.com/seata/seata/releases][https_github.com_seata_seata_releases]

> 根据系统运行环境下载不同的压缩文件：
> 
> `Mac/Linux`下载`seata-server-xxx.tar.gz；`
> 
> `Windows`下载`seata-server-xxx.zip`。

提供一个0.9版本：

> 链接：[https://pan.baidu.com/s/1wx6RdJSD7LmeX6vT7N2TIw ][https_pan.baidu.com_s_1wx6RdJSD7LmeX6vT7N2TIw]  提取码：pj47

通过工具（[winSCP][]）将下载的的压缩包放到服务器指定目录下。

**通过命令（tar -xvf ）解压压缩包：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70][]

> 解压后会生成一个 seata目录，进入可以看到如下目录
> 
> ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 1][]
> 
> 然后进入 conf 目录
> 
>  ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 2][]

**数据库准备：**

** **准备一个seata数据库，执行db\_store.sql文件创建表。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 3][]

在业务库中执行db\_undo\_log.sql文件创建表。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 4][]

**修改 registry.config文件：**

将type 改为 nacos ，并配置nacos地址。

>  如下：
> 
> registry \{  
>   type = "nacos"  
>   nacos \{  
>     serverAddr = "111.231.111.150:8848"  
>     namespace = "public"  
>     cluster = "default"  
>   \}  
> \}  
> config \{  
>   type = "nacos"  
>   nacos \{  
>     serverAddr = "111.231.111.150:8848"  
>     namespace = "public"  
>   \}  
> \}

**修改 nacos-config.txt 文件：**

修改store.mode 存储模式 为 db，默认file；

修改数据库链接信息：store.db.url、store.db.user、store.db.password；

其他默认即可。

> 如下： 
> 
> transport.type=TCP  
> transport.server=NIO  
> transport.heartbeat=true  
> transport.thread-factory.boss-thread-prefix=NettyBoss  
> transport.thread-factory.worker-thread-prefix=NettyServerNIOWorker  
> transport.thread-factory.server-executor-thread-prefix=NettyServerBizHandler  
> transport.thread-factory.share-boss-worker=false  
> transport.thread-factory.client-selector-thread-prefix=NettyClientSelector  
> transport.thread-factory.client-selector-thread-size=1  
> transport.thread-factory.client-worker-thread-prefix=NettyClientWorkerThread  
> transport.thread-factory.boss-thread-size=1  
> transport.thread-factory.worker-thread-size=8  
> transport.shutdown.wait=3  
> service.vgroup\_mapping.my\_test\_tx\_group=default  
> service.enableDegrade=false  
> service.disable=false  
> service.max.commit.retry.timeout=-1  
> service.max.rollback.retry.timeout=-1  
> client.async.commit.buffer.limit=10000  
> client.lock.retry.internal=10  
> client.lock.retry.times=30  
> client.lock.retry.policy.branch-rollback-on-conflict=true  
> client.table.meta.check.enable=true  
> client.report.retry.count=5  
> client.tm.commit.retry.count=1  
> client.tm.rollback.retry.count=1  
> store.mode=db  
> store.file.dir=file\_store/data  
> store.file.max-branch-session-size=16384  
> store.file.max-global-session-size=512  
> store.file.file-write-buffer-cache-size=16384  
> store.file.flush-disk-mode=async  
> store.file.session.reload.read\_size=100  
> store.db.datasource=dbcp  
> store.db.db-type=mysql  
> store.db.driver-class-name=com.mysql.jdbc.Driver  
> store.db.url=jdbc:mysql://111.231.111.150:3306/seata?useUnicode=true  
> store.db.user=root  
> store.db.password=gourd123  
> store.db.min-conn=1  
> store.db.max-conn=3  
> store.db.global.table=global\_table  
> store.db.branch.table=branch\_table  
> store.db.query-limit=100  
> store.db.lock-table=lock\_table  
> recovery.committing-retry-period=1000  
> recovery.asyn-committing-retry-period=1000  
> recovery.rollbacking-retry-period=1000  
> recovery.timeout-retry-period=1000  
> transaction.undo.data.validation=true  
> transaction.undo.log.serialization=jackson  
> transaction.undo.log.save.days=7  
> transaction.undo.log.delete.period=86400000  
> transaction.undo.log.table=undo\_log  
> transport.serialization=seata  
> transport.compressor=none  
> metrics.enabled=false  
> metrics.registry-type=compact  
> metrics.exporter-list=prometheus  
> metrics.exporter-prometheus-port=9898  
> support.spring.datasource.autoproxy=false
> 
> service.default.grouplist=111.231.111.150:8091  
> service.vgroup\_mapping.gourdhu-seata-service-group=default  
> service.vgroup\_mapping.gourdsub-seata-service-group=default

service.vgroup\_mapping.xxx-seata-service-group也可以在 Nacos 配置页面添加，

data-id 为 service.vgroup\_mapping.$\{YOUR\_SERVICE\_NAME\}-seata-service-group, group 为 SEATA\_GROUP， 如果不添加该配置，启动后会提示no available server to connect to services-server

注意：服务名不要超过12位，因为数据库的transaction\_service\_group 字段默认为32位。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 5][]

**将 Seata 配置添加到 Nacos 中**

> cd到config目录，运行命令： sh nacos-config.sh  公网id 
> 
> ![20200318174834738.png][]
> 
> 运行成功后，查看nacos 配置列表， 会有一些Group 为SEATA\_GROUP的配置。
> 
> ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 6][]

** 启动 Seata Server**

> **cd到bin目录，运行命令：nohup sh seata-server.sh -p 8091 -h 111.231.111.150 &> seata.log &**
> 
> \-p：服务端口
> 
> \-h：服务器的外网ip
> 
> 查看Nacos 服务列表：
> 
> ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 7][]
> 
>

至此，Seata安装结束。

### 结语 ###

本文是最近学习和搭建seata过程的一些总结和记录，如有不对的地方，欢迎评论吐槽。

官方文档：[https://seata.io/zh-cn/docs/overview/what-is-seata.html][https_seata.io_zh-cn_docs_overview_what-is-seata.html]

[https_github.com_seata_seata_releases]: https://github.com/seata/seata/releases
[https_pan.baidu.com_s_1wx6RdJSD7LmeX6vT7N2TIw]: https://pan.baidu.com/s/1wx6RdJSD7LmeX6vT7N2TIw%C2%A0
[winSCP]: https://blog.csdn.net/HXNLYW/article/details/81235444
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200115115432177.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2020011511572859.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200115132101923.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200318102725217.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200318102732504.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20200318102809582.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[20200318174834738.png]: https://img-blog.csdnimg.cn/20200318174834738.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200115151627291.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20200115151807399.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0hYTkxZVw==,size_16,color_FFFFFF,t_70
[https_seata.io_zh-cn_docs_overview_what-is-seata.html]: https://seata.io/zh-cn/docs/overview/what-is-seata.html