1.下载
首先我们要下载seata-server包,地址在http://seata.io/zh-cn/blog/download.html
seata-server-1.4.2.zip

2.解压
在非中文目录解压seata-server-1.4.2.zip,其目录结构如下:
seata-部署seata连接nacos

 

3.修改配置
修改conf目录下的registry.conf文件:
seata-部署seata连接nacos

 

内容如下:

registry {
  # tc服务的注册中心类,这里选择nacos,也可以是eureka、zookeeper等
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"
 
  nacos {
    application = "seata-tc-server"
    serverAddr = "localhost:8848" #不要配成127.0.0.1:8848
    group = "SEATA_GROUP"
    namespace = ""
    cluster = "SH"
    username = "nacos"
    password = "nacos"
  }  
}

config {
  # 读取tc服务端的配置文件的方式,这里是从nacos配置中心读取,这样如果tc是集群,可以共享配置
  # file、nacos 、apollo、zk、consul、etcd3
  type = "nacos"
  # 配置nacos地址等信息
  nacos {
    serverAddr = "localhost:8848" #不要配成127.0.0.1:8848
    namespace = ""
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
    dataId = "seataServer.properties"
  }
}

4.在nacos添加配置
特别注意,为了让tc服务的集群可以共享配置,我们选择了nacos作为统一配置中心。因此服务端配置文件seataServer.properties文件需要在nacos中配好。
seata-部署seata连接nacos

 


配置内容如下:

# 数据存储方式,db代表数据库
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.cj.jdbc.Driver
store.db.url=jdbc:mysql://47.*.*.*:33064/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=xk-dev
store.db.password=xk-dev
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
# 事务、日志等配置
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
server.undo.logSaveDays=7
server.undo.logDeletePeriod=86400000

# 客户端与服务端传输方式
transport.serialization=seata
transport.compressor=none
# 关闭metrics功能,提高性能
metrics.enabled=false
metrics.registryType=compact
metrics.exporterList=prometheus
metrics.exporterPrometheusPort=9898

注意:其中的数据库地址、用户名、密码都需要修改成你自己的数据库信息。

5.创建数据库表
特别注意:tc服务在管理分布式事务时,需要记录事务相关数据到数据库中,你需要提前创建好这些表。

新建一个名为seata的数据库,运行如下sql语句,这些表主要记录全局事务、分支事务、全局锁信息:

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- 分支事务表
-- ----------------------------
DROP TABLE IF EXISTS `branch_table`;
CREATE TABLE `branch_table`  (
  `branch_id` bigint(20) NOT NULL,
  `xid` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `transaction_id` bigint(20) NULL DEFAULT NULL,
  `resource_group_id` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `resource_id` varchar(256) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `branch_type` varchar(8) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `status` tinyint(4) NULL DEFAULT NULL,
  `client_id` varchar(64) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `application_data` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `gmt_create` datetime(6) NULL DEFAULT NULL,
  `gmt_modified` datetime(6) NULL DEFAULT NULL,
  PRIMARY KEY (`branch_id`) USING BTREE,
  INDEX `idx_xid`(`xid`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;

-- ----------------------------
-- 全局事务表
-- ----------------------------
DROP TABLE IF EXISTS `global_table`;
CREATE TABLE `global_table`  (
  `xid` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `transaction_id` bigint(20) NULL DEFAULT NULL,
  `status` tinyint(4) NOT NULL,
  `application_id` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `transaction_service_group` varchar(32) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `transaction_name` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `timeout` int(11) NULL DEFAULT NULL,
  `begin_time` bigint(20) NULL DEFAULT NULL,
  `application_data` varchar(2000) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `gmt_create` datetime NULL DEFAULT NULL,
  `gmt_modified` datetime NULL DEFAULT NULL,
  PRIMARY KEY (`xid`) USING BTREE,
  INDEX `idx_gmt_modified_status`(`gmt_modified`, `status`) USING BTREE,
  INDEX `idx_transaction_id`(`transaction_id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Compact;

SET FOREIGN_KEY_CHECKS = 1;
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