【Seata】seata-server-1.5.1-直接部署（整合nacos）

一、环境说明

IP	操作系统	程序	备注
192.168.1.16	centos7.9	MySQL-5.7	已提前部署
192.168.1.20	centos7.9	Nacos-2.0.4	已提前部署
192.168.1.20	centos7.9	seata-server-1.5.1	本文将要部署

二、部署

1. 下载

wget https://github.com/seata/seata/releases/download/v1.5.1/seata-server-1.5.1.tar.gz

2. 解压

tar -zxvf seata-server-1.5.1.tar.gz
# 解压出的文件名 seata，改个名，标注版本
mv seata seata-1.5.1

3. 配置

3.1 application.yml 配置

cd  seata-1.5.1
# 备份
cp seata-1.5.1/conf/application.yml  seata-1.5.1/conf/application.yml.bak
# 修改
vim seata-1.5.1/conf/application.yml

内容如下，具体配置参照 application.example.yml 中配置修改

server:
  port: 7091

spring:
  application:
    name: seata-server

logging:
  config: classpath:logback-spring.xml
  file:
    path: ${
    
    user.home}/logs/seata
#  按需处理
#  extend:
#    logstash-appender:
#      destination: 127.0.0.1:4560
#    kafka-appender:
#      bootstrap-servers: 127.0.0.1:9092
#      topic: logback_to_logstash

# 1.5.0 版本开始提供了管理后台的web页面，此处配置web的用户名和密码
console:
  user:
    username: seata
    password: seata

seata:
  config:
    type: nacos
    nacos:
      server-addr: 192.168.1.20:8848
      namespace: test_namespace
      group: SEATA_GROUP
      username: nacos
      password: nacos
      # nacos配置文件 data-id ，可以用yml（官方给的config.txt是properties 懒得改直接用.....）
      data-id: seataServer.properties
  registry:
    type: nacos
    preferred-networks: 30.240.*
    nacos:
      application: seata-server
      server-addr: 192.168.1.20:8848
      group: SEATA_GROUP
      namespace: test_namespace
      # 集群名称，注意需要和事务分组值保持一致
      cluster: default
      username: nacos
      password: nacos
      
  # 官方部署文档在此yml中配置，也可以在 seataServer.properties 中配置，看个人喜好
  store:
    # support: file 、 db 、 redis
    mode: db
    session:
      mode: db
    lock:
      mode: db
    db:
      datasource: druid
      db-type: mysql
      driver-class-name: com.mysql.jdbc.Driver
      url: jdbc:mysql://127.0.0.1:3306/seata?rewriteBatchedStatements=true
      user: root
      password: root
      min-conn: 5
      max-conn: 100
      global-table: global_table
      branch-table: branch_table
      lock-table: lock_table
      distributed-lock-table: distributed_lock
      query-limit: 100
      max-wait: 5000

#  server:
#    service-port: 8091 #If not configured, the default is '${server.port} + 1000'
  security:
    secretKey: SeataSecretKey0c382ef121d778043159209298fd40bf3850a017
    tokenValidityInMilliseconds: 1800000
    ignore:
      urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.ico,/console-fe/public/**,/api/v1/auth/login

3.2 seataServer.properties配置（Nacos中）

属性配置官方文档说明（未更新，还是1.4.2版本）：https://seata.io/zh-cn/docs/user/configurations.html
详细配置（由于Github访问限制，给个Gitee仓库的链接）：https://gitee.com/seata-io/seata/blob/v1.5.1/script/config-center/config.txt

1. 创建 seataServer.properties ，注意 namespace 、 group 、data-id 和上述 application.yml 配置中心的配置 保持一致，内容参照 详细配置链接 中配置按需配即可
2. 事务分组概念： https://seata.io/zh-cn/docs/user/txgroup/transaction-group.html
   

#Transaction routing rules configuration, only for the client
# 事务分组，可以配置多个
# 1. xxx_group：事务组名称
# 2. 值 default：集群名称，和 application.yml中 seata.registry.nacos.cluster=default 中 default 保持对应
service.vgroupMapping.xxx_group=default
service.enableDegrade=false
service.disableGlobalTransaction=false

#  application.yml 中如果配置了store，此处可以不配
#Transaction storage configuration, only for the server. The file, DB, and redis configuration values are optional.
store.mode=db
store.lock.mode=db
store.session.mode=db

#These configurations are required if the `store mode` is `db`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `db`, you can remove the configuration block.
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://192.168.1.16:3306/seata?useUnicode=true&rewriteBatchedStatements=true
store.db.user=root
store.db.password=root
store.db.minConn=5
store.db.maxConn=30
# global_table、branch_table、distributed_lock、lock_table 四张表需要手动创建
store.db.globalTable=global_table
store.db.branchTable=branch_table
store.db.distributedLockTable=distributed_lock
store.db.queryLimit=100
store.db.lockTable=lock_table
store.db.maxWait=5000

4. Server端数据库配置

支持 mysql、oracle、postgresql

4.1 注意事项

4.1.1 默认不支持 MySQL8

默认mysql-connector为 mysql-connector-java-5.1.35.jar ，不支持MySQL8，若用MySQL8需要更换 mysql-connector-java-8.0.27.jar（seata-server-1.5.2提供的版本）重新打包

4.1.2 低版本升级到1.5.x 版本表结构有变更

版本升级指南： https://seata.io/zh-cn/docs/ops/upgrade.html

4.2 新建数据库

数据库名称： seata ， 和上述配置保持一致

4.3 创建表

按数据库类型选择脚本执行： https://gitee.com/seata-io/seata/tree/v1.5.1/script/server/db

MySQL 如下：

-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
CREATE TABLE IF NOT EXISTS `global_table`
(
    `xid`                       VARCHAR(128) NOT NULL,
    `transaction_id`            BIGINT,
    `status`                    TINYINT      NOT NULL,
    `application_id`            VARCHAR(32),
    `transaction_service_group` VARCHAR(32),
    `transaction_name`          VARCHAR(128),
    `timeout`                   INT,
    `begin_time`                BIGINT,
    `application_data`          VARCHAR(2000),
    `gmt_create`                DATETIME,
    `gmt_modified`              DATETIME,
    PRIMARY KEY (`xid`),
    KEY `idx_status_gmt_modified` (`status` , `gmt_modified`),
    KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4;

-- the table to store BranchSession data
CREATE TABLE IF NOT EXISTS `branch_table`
(
    `branch_id`         BIGINT       NOT NULL,
    `xid`               VARCHAR(128) NOT NULL,
    `transaction_id`    BIGINT,
    `resource_group_id` VARCHAR(32),
    `resource_id`       VARCHAR(256),
    `branch_type`       VARCHAR(8),
    `status`            TINYINT,
    `client_id`         VARCHAR(64),
    `application_data`  VARCHAR(2000),
    `gmt_create`        DATETIME(6),
    `gmt_modified`      DATETIME(6),
    PRIMARY KEY (`branch_id`),
    KEY `idx_xid` (`xid`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4;

-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(
    `row_key`        VARCHAR(128) NOT NULL,
    `xid`            VARCHAR(128),
    `transaction_id` BIGINT,
    `branch_id`      BIGINT       NOT NULL,
    `resource_id`    VARCHAR(256),
    `table_name`     VARCHAR(32),
    `pk`             VARCHAR(36),
    `status`         TINYINT      NOT NULL DEFAULT '0' COMMENT '0:locked ,1:rollbacking',
    `gmt_create`     DATETIME,
    `gmt_modified`   DATETIME,
    PRIMARY KEY (`row_key`),
    KEY `idx_status` (`status`),
    KEY `idx_branch_id` (`branch_id`),
    KEY `idx_xid_and_branch_id` (`xid` , `branch_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4;

CREATE TABLE IF NOT EXISTS `distributed_lock`
(
    `lock_key`       CHAR(20) NOT NULL,
    `lock_value`     VARCHAR(20) NOT NULL,
    `expire`         BIGINT,
    primary key (`lock_key`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8mb4;

INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('AsyncCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryCommitting', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('RetryRollbacking', ' ', 0);
INSERT INTO `distributed_lock` (lock_key, lock_value, expire) VALUES ('TxTimeoutCheck', ' ', 0);

至此，seata-server部署全部完成！

5. seata-server的jvm配置

查看启动脚本

vim  seata-1.5.1/bin/seata-server.sh

脚本JVM参数配置读取 环境变量，若没设置，则默认2G；

5.1 方式一

直接改脚本默认值，例如同比例缩小一半：

JVM_XMX：1024m
JVM_XMS：10424m
JVM_XMN：512m

JAVA_OPT="${JAVA_OPT} -server -Xmx${JVM_XMX:="1024m"} -Xms${JVM_XMS:="10424m"} -Xmn${JVM_XMN:="512m"} -Xss${JVM_XSS:="256k"} -XX:SurvivorRatio=10 -XX:MetaspaceSize=${JVM_MetaspaceSize:="128m"} -XX:MaxMetaspaceSize=${JVM_MaxMetaspaceSize:="256m"} -XX:MaxDirectMemorySize=${JVM_MaxDirectMemorySize:=1024m} -XX:-OmitStackTraceInFastThrow -XX:-UseAdaptiveSizePolicy"

5.2 方式二

配置环境变量

export JVM_XMX=1024m 
export JVM_XMS=1024m 
export JVM_XMN=1024m 

要永久生效的话需要配置到 /etc/profile中

6. 启动 seata-server

./seata-1.5.1/bin/seata-server.sh

查看日志

tail -100f seata-1.5.1/logs/start.out

7. 访问管理后台

http://192.168.1.16:7091
用户名密码就是 application.yml中配置的: seata/seata (生产环境一定不要用简单密码)

登录后

三、Client端整合、使用

1. pom依赖

    <properties>
        <alibaba.seata.version>1.5.1</alibaba.seata.version>
        <alibaba.seata.starter.version>2021.1</alibaba.seata.starter.version>
    </properties>
    
    <dependencies>
           <dependency>
                <groupId>io.seata</groupId>
                <artifactId>seata-spring-boot-starter</artifactId>
                <version>${alibaba.seata.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
                <version>${alibaba.seata.starter.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>io.seata</groupId>
                        <artifactId>seata-spring-boot-starter</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        <dependencies>

2. 整合Mybatis配置

seata:
  # 与服务端service.vgroupMapping.my_group=default对应
  # 默认：${spring.application.name} + "-seata-service-group" 拼接后的字符串作为分组名
  tx-service-group: xxx_group
  # seata.service.vgroup-mapping.事务分组名=集群名称 配置
  service:
    vgroup-mapping:
      xxx_group: default

4. 整合Mybatis plus 动态数据源 配置
   用了 mybatis-plus 动态数据源 dynamic-datasource-spring-boot-starter，所以这里seata配置和原生不太一样

spring: 
  datasource: 
    dynamic: 
      datasource: 
      # 开启seata代理，开启后默认每个数据源都代理，如果某个不需要代理可单独关闭
      seata: true
      # 默认AT模式，支持  AT 、XA
      seata-mode: AT
# seata配置
seata: 
  # spring.datasource.dynami.seata需要同时开启
  enabled: true
  # 关闭自动代理
  enable-auto-data-source-proxy: false
  # 与服务端service.vgroupMapping.xxx_group=default对应
  # 默认以：${spring.application.name} + "-seata-service-group" 拼接后的字符串作为分组名
  tx-service-group: xxx_group
  # seata.service.vgroup-mapping.事务分组名=集群名称 配置
  service: 
    vgroup-mapping: 
      xxx_group: default

四、管理后台查看事务

事务发生时，可以在此界面查看当前的事务

五、参考资料

官方文档

https://seata.io/zh-cn/docs/ops/deploy-guide-beginner.html

官方Demo

https://gitee.com/seata-io/seata-samples