分布式事务框架seata快速入门-seata的搭建（一）
分布式事务框架seata快速入门-seata的使用（二）

本系列源码地址
Seata 是一款开源的分布式事务解决方案，致力于提供高性能和简单易用的分布式事务服务。Seata 将为用户提供了 AT、TCC、SAGA 和 XA 事务模式，为用户打造一站式的分布式解决方案。

1 安装

  1. 下载安装包：点击下载
  2. 上传到linux，解压，解压后目录:
    bin conf lib LICENSE logs

    bin: 存放启动脚本
    conf: 存放配置文件
    logs: 存放日志

2 修改配置文件

  1. 修改file.conf

    这里设置seata存储模式为db，即数据库，同时修改数据库配置，将数据库地址、用户名、密码设置为自己的，同时注意设置mysql驱动名,mysql 8以上设置为：com.mysql.cj.jdbc.Driver。如果设置为file，不需要进行额外设置

    ## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  ## 设置seata存储模式为数据库，然后去修改数据库配置。如果设置为file，不需要进行额外设置
  mode = "db"
  ## rsa decryption public key
  publicKey = ""
  ## 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 = "hikari"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.cj.jdbc.Driver"
    ## if using mysql to store the data, recommend add rewriteBatchedStatements=true in jdbc connection param
    url = "jdbc:mysql://127.0.0.1:3306/seata?rewriteBatchedStatements=true"
    user = "root"
    password = "xxxxxxxxx"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }
  ## redis store property
  redis {
    ## redis mode: single、sentinel
    mode = "single"
    ## single mode property
    single {
      host = "127.0.0.1"
      port = "6379"
    }
    ## sentinel mode property
    sentinel {
      masterName = ""
      ## such as "10.28.235.65:26379,10.28.235.65:26380,10.28.235.65:26381"
      sentinelHosts = ""
    }
    password = ""
    database = "0"
    minConn = 1
    maxConn = 10
    maxTotal = 100
    queryLimit = 100
  }
}
  2. 修改 registry.conf
    1. 这里注册中心选择nacos，即registry.type=nacos，同时修改nacos配置
    2. 配置中心选择nacos ，即config.type=nacos，同时修改nacos配置，使用了nacos作为配置中心，那么file.conf里面所有的配置只要注册中心有的都会被覆盖，后面需要修改配置只需要去配置中心修改
    registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = "public"
    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"
    aclToken = ""
  }
  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 = "public"
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
  }
  consul {
    serverAddr = "127.0.0.1:8500"
    aclToken = ""
  }
  apollo {
    appId = "seata-server"
    ## apolloConfigService will cover apolloMeta
    apolloMeta = "http://192.168.1.204:8801"
    apolloConfigService = "http://192.168.1.204:8080"
    namespace = "application"
    apolloAccesskeySecret = ""
    cluster = "seata"
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
    nodePath = "/seata/seata.properties"
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  file {
    name = "file.conf"
  }
}

3 上传配置到nacos配置中心

  1. 去github 下载配置到本地,地址链接，需要切换到对应的版本分支
    在这里插入图片描述

    可以下载整个工程，也可以直接获取需要的文件，我们直接获取需要的文件吧

  2. 在本地磁盘新建个文件夹用来存放现在的文件

  3. 复制一份文件 seata/script/config-center/config.txt到本地

  4. 复制一份文件 seata/script/config-center/nacos/nacos-config.sh到本地
    在这里插入图片描述

  5. 将config.txt里面=号后没有值的地方都用空字符串或者对应的默认值补全，修改后配置文件长这样：

    transport.type=TCP
transport.server=NIO
transport.heartbeat=true
transport.enableClientBatchSendRequest=false
transport.threadFactory.bossThreadPrefix=NettyBoss
transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker
transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler
transport.threadFactory.shareBossWorker=false
transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector
transport.threadFactory.clientSelectorThreadSize=1
transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread
transport.threadFactory.bossThreadSize=1
transport.threadFactory.workerThreadSize=default
transport.shutdown.wait=3
service.vgroupMapping.my_test_tx_group=default
service.default.grouplist=127.0.0.1:8091
service.enableDegrade=false
service.disableGlobalTransaction=false
client.rm.asyncCommitBufferLimit=10000
client.rm.lock.retryInterval=10
client.rm.lock.retryTimes=30
client.rm.lock.retryPolicyBranchRollbackOnConflict=true
client.rm.reportRetryCount=5
client.rm.tableMetaCheckEnable=false
client.rm.tableMetaCheckerInterval=60000
client.rm.sqlParserType=druid
client.rm.reportSuccessEnable=false
client.rm.sagaBranchRegisterEnable=false
client.tm.commitRetryCount=5
client.tm.rollbackRetryCount=5
client.tm.defaultGlobalTransactionTimeout=60000
client.tm.degradeCheck=false
client.tm.degradeCheckAllowTimes=10
client.tm.degradeCheckPeriod=2000
store.mode=file
store.publicKey=""
store.file.dir=file_store/data
store.file.maxBranchSessionSize=16384
store.file.maxGlobalSessionSize=512
store.file.fileWriteBufferCacheSize=16384
store.file.flushDiskMode=async
store.file.sessionReloadReadSize=100
store.db.datasource=hikari
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=username
store.db.password=password
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
store.redis.mode=single
store.redis.single.host=127.0.0.1
store.redis.single.port=6379
store.redis.sentinel.masterName=""
store.redis.sentinel.sentinelHosts=""
store.redis.maxConn=10
store.redis.minConn=1
store.redis.maxTotal=100
store.redis.database=0
store.redis.password=""
store.redis.queryLimit=100
server.recovery.committingRetryPeriod=1000
server.recovery.asynCommittingRetryPeriod=1000
server.recovery.rollbackingRetryPeriod=1000
server.recovery.timeoutRetryPeriod=1000
server.maxCommitRetryTimeout=-1
server.maxRollbackRetryTimeout=-1
server.rollbackRetryTimeoutUnlockEnable=false
client.undo.dataValidation=true
client.undo.logSerialization=jackson
client.undo.onlyCareUpdateColumns=true
server.undo.logSaveDays=7
server.undo.logDeletePeriod=86400000
client.undo.logTable=undo_log
client.undo.compress.enable=true
client.undo.compress.type=zip
client.undo.compress.threshold=64k
log.exceptionRate=100
transport.serialization=seata
transport.compressor=none
metrics.enabled=false
metrics.registryType=compact
metrics.exporterList=prometheus
metrics.exporterPrometheusPort=9898

  6. 将nacos-config.sh中的$(dirname "$PWD")替换为 “.”

  7. 本地没有git的话安装一个git，在上图文件下打开git窗口，输入命令

    sh ./nacos-config.sh -h 1.116.31.139 -p 8848 -g SEATA_GROUP -u nacos -w nacos
    1. -h 1.116.31.139 ：指定nacos服务ip，默认是localhost
    2. -p 8848 ：指定nacos端口，默认8848
    3. -g SEATA_GROUP：指定seata配置的group，默认SEATA_GROUP
    4. -u -w ：指定nacos服务的用户名密码，默认都是nacos
      以上如果都是默认值，都可以省略
    ...
Set log.exceptionRate=100 successfully
Set transport.serialization=seata successfully
Set transport.compressor=none successfully
Set metrics.enabled=false successfully
Set metrics.registryType=compact successfully
Set metrics.exporterList=prometheus successfully
Set metrics.exporterPrometheusPort=9898 successfully
=========================================================================
 Complete initialization parameters,  total-count:89 ,  failure-count:0
=========================================================================
 Init nacos config finished, please start seata-server.

    在这里插入图片描述

    至此，所有的file.conf配置全部都可以到nacos进行配置

4. 在nacos配置中心修改配置

  1. 编辑store.mode为db，发布
  2. 修改store.db.driverClassName为com.mysql.cj.jdbc.Driver，发布，我的mysql版本为8.0.17，8版本以下不需要修改
  3. 修改store.db.url为自己的，发布
  4. 修改store.db.user为自己的，发布
  5. 修改store.db.password为自己的，发布

5. 创建数据库和脚本

创建store.db.url中指定的数据库（默认为seata），并导入以下脚本。


SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for branch_table
-- ----------------------------
DROP TABLE IF EXISTS `branch_table`;
CREATE TABLE `branch_table` (
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(128) NOT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `resource_group_id` varchar(32) DEFAULT NULL,
  `resource_id` varchar(256) DEFAULT NULL,
  `branch_type` varchar(8) DEFAULT NULL,
  `status` tinyint(4) DEFAULT NULL,
  `client_id` varchar(64) DEFAULT NULL,
  `application_data` varchar(2000) DEFAULT NULL,
  `gmt_create` datetime(6) DEFAULT NULL,
  `gmt_modified` datetime(6) DEFAULT NULL,
  PRIMARY KEY (`branch_id`),
  KEY `idx_xid` (`xid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for global_table
-- ----------------------------
DROP TABLE IF EXISTS `global_table`;
CREATE TABLE `global_table` (
  `xid` varchar(128) NOT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `status` tinyint(4) NOT NULL,
  `application_id` varchar(32) DEFAULT NULL,
  `transaction_service_group` varchar(32) DEFAULT NULL,
  `transaction_name` varchar(128) DEFAULT NULL,
  `timeout` int(11) DEFAULT NULL,
  `begin_time` bigint(20) DEFAULT NULL,
  `application_data` varchar(2000) DEFAULT NULL,
  `gmt_create` datetime DEFAULT NULL,
  `gmt_modified` datetime DEFAULT NULL,
  PRIMARY KEY (`xid`),
  KEY `idx_gmt_modified_status` (`gmt_modified`,`status`),
  KEY `idx_transaction_id` (`transaction_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Table structure for lock_table
-- ----------------------------
DROP TABLE IF EXISTS `lock_table`;
CREATE TABLE `lock_table` (
  `row_key` varchar(128) NOT NULL,
  `xid` varchar(128) DEFAULT NULL,
  `transaction_id` bigint(20) DEFAULT NULL,
  `branch_id` bigint(20) NOT NULL,
  `resource_id` varchar(256) DEFAULT NULL,
  `table_name` varchar(32) DEFAULT NULL,
  `pk` varchar(36) DEFAULT NULL,
  `gmt_create` datetime DEFAULT NULL,
  `gmt_modified` datetime DEFAULT NULL,
  PRIMARY KEY (`row_key`),
  KEY `idx_branch_id` (`branch_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

6. 启动seata

进入seata安装 bin目录: nohup ./seata-server.sh >../logs/log.out 2>1 &，进入log.out 查看日志：

17:53:28.633  INFO --- [                     main] io.seata.config.FileConfiguration        : The file name of the operation is registry
17:53:28.637  INFO --- [                     main] io.seata.config.FileConfiguration        : The configuration file used is /usr/local/seata/seata-server-1.4.2/conf/registry.conf
17:53:29.699 ERROR --- [                     main] i.s.c.s.db.AbstractDataSourceProvider    : decryption failed,please confirm whether the ciphertext and secret key are correct! error msg: Illegal base64 character 22
17:53:30.841  INFO --- [                     main] com.alibaba.druid.pool.DruidDataSource   : {dataSource-1} inited
17:53:31.188  INFO --- [                     main] i.s.core.rpc.netty.NettyServerBootstrap  : Server started, listen port: 8091

至此，seata搭建成功了，可以在分布式项目中引入了

# postgresql # 数据库 # mysql
Logo
AtomGit 开源协作平台测评赛

瓜分20万奖金 获得内推名额 丰厚实物奖励 易参与易上手

更多推荐

cover

C#联合Halcon深度学习源代码分享1 预处理图像2图像识别测试3误差分析（含导入步骤文档，含中文注释） （附源码链接）

avatar 开放原子开发者工作坊

Git基础命令学习

git基础命令学习笔记git init 命令目录变成 Git 可以管理的仓库git add 把文件添加到仓库(可多次add不同的文件)git commit 把文件提交到仓库git satus 命令查看状态，可以让我们时刻掌握仓库当前的状态git diff可以看到指定文件的修改内容

avatar 开放原子开发者工作坊
cover

SpringBoot01:Hello,World

avatar 开放原子开发者工作坊