首先我們要下載seata-server套件
在非中文目錄中解壓縮這個zip包,其目錄結構如下:
##3 )修改配置修改conf目錄下的registry.conf檔: #內容如下:registry { # tc服务的注册中心类,这里选择nacos,也可以是eureka、zookeeper等 type = "nacos" nacos { # seata tc 服务注册到 nacos的服务名称,可以自定义 application = "seata-tc-server" serverAddr = "127.0.0.1:8848" group = "DEFAULT_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 type = "nacos" # 配置nacos地址等信息 nacos { serverAddr = "127.0.0.1:8848" namespace = "" group = "SEATA_GROUP" username = "nacos" password = "nacos" dataId = "seataServer.properties" } }
# 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.jdbc.Driver store.db.url=jdbc:mysql://127.0.0.1:3306/seata?useUnicode=true&rewriteBatchedStatements=true store.db.user=root store.db.password=123 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
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;
##啟動成功後,seata-server應該已經註冊到nacos註冊中心了。
開啟瀏覽器,造訪nacos位址:http://localhost:8848,然後進入服務清單頁面,可以看到seata-tc-server的資訊:
2.微服務整合seata 1)引入依賴
<dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-seata</artifactId> <exclusions> <!--版本较低,1.3.0,因此排除--> <exclusion> <artifactId>seata-spring-boot-starter</artifactId> <groupId>io.seata</groupId> </exclusion> </exclusions> </dependency> <!--seata starter 采用1.4.2版本--> <dependency> <groupId>io.seata</groupId> <artifactId>seata-spring-boot-starter</artifactId> <version>${seata.version}</version> </dependency>
2 )修改設定檔
seata: registry: # TC服务注册中心的配置,微服务根据这些信息去注册中心获取tc服务地址 # 参考tc服务自己的registry.conf中的配置 type: nacos nacos: # tc server-addr: 127.0.0.1:8848 namespace: "" group: DEFAULT_GROUP application: seata-tc-server # tc服务在nacos中的服务名称 cluster: SH tx-service-group: seata-demo # 事务组,根据这个获取tc服务的cluster名称 service: vgroup-mapping: # 事务组与TC服务cluster的映射关系 seata-demo: SH
3.TC服務的高可用和異地容災1)模擬異地容災的TC叢集
連接埠號 | 叢集名稱 | ||
---|---|---|---|
8091 | SH | seata2 | |
8092 | HZ |
registry { # tc服务的注册中心类,这里选择nacos,也可以是eureka、zookeeper等 type = "nacos" nacos { # seata tc 服务注册到 nacos的服务名称,可以自定义 application = "seata-tc-server" serverAddr = "127.0.0.1:8848" group = "DEFAULT_GROUP" namespace = "" cluster = "HZ" 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 type = "nacos" # 配置nacos地址等信息 nacos { serverAddr = "127.0.0.1:8848" namespace = "" group = "SEATA_GROUP" username = "nacos" password = "nacos" dataId = "seataServer.properties" } }
seata-server.bat -p 8092
#點進詳情檢視:
##2)將事務組映射配置到nacos
新一個設定:
設定的內容如下:# 事务组映射关系 service.vgroupMapping.seata-demo=SH service.enableDegrade=false service.disableGlobalTransaction=false # 与TC服务的通信配置 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 # RM配置 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 # TM配置 client.tm.commitRetryCount=5 client.tm.rollbackRetryCount=5 client.tm.defaultGlobalTransactionTimeout=60000 client.tm.degradeCheck=false client.tm.degradeCheckAllowTimes=10 client.tm.degradeCheckPeriod=2000 # undo日志配置 client.undo.dataValidation=true client.undo.logSerialization=jackson client.undo.onlyCareUpdateColumns=true client.undo.logTable=undo_log client.undo.compress.enable=true client.undo.compress.type=zip client.undo.compress.threshold=64k client.log.exceptionRate=100
seata: config: type: nacos nacos: server-addr: 127.0.0.1:8848 username: nacos password: nacos group: SEATA_GROUP data-id: client.properties
## 3.微服务读取nacos配置 接下来,需要修改每一个微服务的application.yml文件,让微服务读取nacos中的client.properties文件: ```yaml seata: config: type: nacos nacos: server-addr: 127.0.0.1:8848 username: nacos password: nacos group: SEATA_GROUP data-id: client.properties
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