centos7安装分布式事务框架seata

1.安装包及前置准备

• 需要先在虚拟机上安装运行nacos
• tar包准备
  下载地址

我这里安装的是seata-server-1.4.0.tar.gz

2.上传

rz或者ftp工具上传

3.解压

tar -zxvf seata-server-1.4.0.tar.gz -C /usr/local

4.进入seata目录

目录结构如上图所示 接下来需要修改conf 目录里的配置

5.修改file.conf配置项

cd conf/
vim file.conf

修改如下

store {
  ## store mode: file、db、redis
  mode = "db"

  ## file store property
  file {
    ## store location dir
    dir = "sessionStore"
    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    maxBranchSessionSize = 16384
    # globe session size , if exceeded throws exceptions
    maxGlobalSessionSize = 512
    # file buffer size , if exceeded allocate new buffer
    fileWriteBufferCacheSize = 16384
    # when recover batch read size
    sessionReloadReadSize = 100
    # async, sync
    flushDiskMode = async
  }

  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.jdbc.Driver"
    url = "jdbc:mysql://127.0.0.1:3306/seata"
    user = "root"
    password = "root"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }

  ## redis store property
  redis {
    host = "127.0.0.1"
    port = "6379"
    password = ""
    database = "0"
    minConn = 1
    maxConn = 10
    maxTotal = 100
    queryLimit = 100
  }

}

6.修改registry.conf配置

vim registry.conf

registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"
  loadBalance = "RandomLoadBalance"
  loadBalanceVirtualNodes = 10

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = ""
    cluster = "default"
    username = "nacos"
    password = "nacos"
  }
  eureka {
    serviceUrl = "http://localhost:8761/eureka"
    application = "default"
    weight = "1"
  }
  redis {
    serverAddr = "localhost:6379"
    db = 0
    password = ""
    cluster = "default"
    timeout = 0
  }
  zk {
    cluster = "default"
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
  }
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
  }
  etcd3 {
    cluster = "default"
    serverAddr = "http://localhost:2379"
  }
  sofa {
    serverAddr = "127.0.0.1:9603"
    application = "default"
    region = "DEFAULT_ZONE"
    datacenter = "DefaultDataCenter"
    cluster = "default"
    group = "SEATA_GROUP"
    addressWaitTime = "3000"
  }
  file {
    name = "file.conf"
  }
}

config {
  # file、nacos 、apollo、zk、consul、etcd3
  type = "nacos"

  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = ""
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
  }
  consul {
    serverAddr = "127.0.0.1:8500"
  }
  apollo {
    appId = "seata-server"
    apolloMeta = "http://192.168.1.204:8801"
    namespace = "application"
    apolloAccesskeySecret = ""
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  file {
    name = "file.conf"
  }
}

7.下载资源目录

资源目录
点击上述链接下载该项目到本地

找到script/config-center/config.txt

修改内容如下

service.vgroupMapping.my_test_tx_group=default
service.default.grouplist=127.0.0.1:8091
service.enableDegrade=false
service.disableGlobalTransaction=false
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://192.168.251.100:3306/seata?useUnicode=true
store.db.user=root
store.db.password=root
store.db.minConn=5
store.db.maxConn=30
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000

8.进入script\config-center\nacos目录

9.执行sh命令

按住windows键输入git 点击 git bash

然后cd 到 D:\develop\seata\script\config-center\nacos 目录

最后执行下面命令

sh nacos-config.sh -h 192.168.251.100 -p 8848

10.nacos查看配置项

可以看到nacos 都有之前的config.txt中的配置了

11.启动Seata Server

• 先进入到指定目录

cd /usr/local/seata/bin/

• 执行命令

sh seata-server.sh -p 8091 -h 127.0.0.1

看到上述就执行成功了 此时我们回到nacos就可以看到该服务已经注册到nacos中了

• 支持的命令参数

12.最后补充

此时seata的安装就完成了 我们在项目中就可以使用分布式事务了

• 项目中需要引入seata的依赖

<!--seata的依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
        </dependency>

• 项目中需要在application.yml中配置

seata:
  registry:
    # 配置seata的注册中心， 告诉seata client 怎么去访问seata server(TC)
    type: nacos
    nacos:
      server-addr: 192.168.251.100:8848  # seata server 所在的nacos服务地址
      application: seata-server    # seata server 的服务名seata-server ，如果没有修改可以不配
      username: nacos
      password: nacos
      group: SEATA_GROUP          # seata server 所在的组，默认就是SEATA_GROUP，没有改也可以不配
  config:
    type: nacos
    nacos:
      server-addr: 192.168.251.100:8848
      username: nacos
      password: nacos
      group: SEATA_GROUP
spring:
	alibaba:
      	seata:
        	tx-service-group: my_test_tx_group #配置事务分组

• 使用@GlobalTransactional轻松搞定分布式事务
• 详细项目可参见我的码云