Seata服务端部署

本文参考官方部署说明文档

系统环境

阿里云ubuntu
Java: openjdk version "1.8.0_382"
Seata:seata-server-1.8.0

下载Seata-server

github下载地址：https://github.com/seata/seata/releases
官网下载地址：https://seata.io/zh-cn/blog/download.html

部署

安装

将下载好的Seata-server存放到指定的工作目录，本文工作目录为/opt，执行命令如下：

mv seata-server-1.8.0.tar.gz /opt

进入工作目录，并解压安装Seata-server，命令如下：

#进入安装目录
cd /opt
#解压安装包
tar -zxvf seata-server-1.8.0.tar.gz

配置

进入Seata的配置目录

cd /opt/seata/conf

配置文件结构
Seata-server是一个基于spring-boot开发的项目，启动配置文件为application.yml，核心配置部分包含seata.config、seata.registry、seata.store三个部分（1.5.x版本之后使用了spring-boot，建议在application.yml中集中配置）。

• seata.config：指定配置中心，提供全局配置，包含seata-server和全局store的相关配置；默认为file，指定读取同配置目录下的file.conf文件。
• seata.registry：指定seata-server服务端的注册中心，1.5.0版本之后seata-server调整为spring-boot，不再读取registry.conf文件
• seata.store：指定事务数据的存储模式。该模块的配置内容与seata.config中store的配置部分重叠；seata.config用于指定全局的事务日志存储配置，seata.store指定当前seata端使用的事务日志存储配置，seata.store配置的优先级高于seata.config。

【application.yml】文件

server:
  port: 7091

spring:
  application:
    name: seata-server

logging:
  config: classpath:logback-spring.xml
  file:
    path: ${log.home:${user.home}/logs/seata}

console:
  user:
    username: seata
    password: seata
seata:
  config:
    # support: nacos 、 consul 、 apollo 、 zk  、 etcd3
    type: file
  registry:
    # support: nacos 、 eureka 、 redis 、 zk  、 consul 、 etcd3 、 sofa
    type: eureka
    eureka:
      service-url: http://127.0.0.1:8080/eureka
      application: ${spring.application.name}
      weight: 1
  server:
    service-port: 8091 #If not configured, the default is '${server.port} + 1000'
    max-commit-retry-timeout: -1
    max-rollback-retry-timeout: -1
    rollback-retry-timeout-unlock-enable: false
    enable-check-auth: true
    enable-parallel-request-handle: true
    retry-dead-threshold: 130000
    xaer-nota-retry-timeout: 60000
    enableParallelRequestHandle: true
    recovery:
      committing-retry-period: 1000
      async-committing-retry-period: 1000
      rollbacking-retry-period: 1000
      timeout-retry-period: 1000
    undo:
      log-save-days: 7
      log-delete-period: 86400000
    session:
      branch-async-queue-size: 5000 #branch async remove queue size
      enable-branch-async-remove: false #enable to asynchronous remove branchSession
  store:
    # support: file 、 db 、 redis
    mode: db
    db:
      datasource: druid
      db-type: mysql
      driver-class-name: com.mysql.cj.jdbc.Driver
      url: jdbc:mysql://127.0.0.1:3306/seata?rewriteBatchedStatements=true
      user: admin
      password: "!QAZ2wsx"
      min-conn: 10
      max-conn: 100
      global-table: global_table
      branch-table: branch_table
      lock-table: lock_table
      distributed-lock-table: distributed_lock
      query-limit: 1000
      max-wait: 5000
  metrics:
    enabled: false
    registry-type: compact
    exporter-list: prometheus
    exporter-prometheus-port: 9898
  transport:
    rpc-tc-request-timeout: 15000
    enable-tc-server-batch-send-response: false
    shutdown:
      wait: 3
    thread-factory:
      boss-thread-prefix: NettyBoss
      worker-thread-prefix: NettyServerNIOWorker
      boss-thread-size: 1
  security:
    secretKey: 1015zhoulvyuan0fd57724fb9818439e9810c45619efa3
    tokenValidityInMilliseconds: 1800000
  ignore:
    urls: /,/**/*.css,/**/*.js,/**/*.html,/**/*.map,/**/*.svg,/**/*.png,/**/*.jpeg,/**/*.ico,/api/v1/auth/login,/metadata/v1/**

补充说明：console部分在1.5.x版本后添加，security部分在1.6.x版本之后添加，使用新版本的seata时需要添加这两个部分的配置，否则启动seata会出现读取不到配置的异常。

【file.conf】文件

server {
    service-port = 8091 #If not configured, the default is '${server.port} + 1000'
    max-commit-retry-timeout = -1
    max-rollback-retry-timeout = -1
    rollback-retry-timeout-unlock-enable = false
    enable-check-auth = true
    enable-parallel-request-handle = true
    retry-dead-threshold = 130000
    xaer-nota-retry-timeout = 60000
    enableParallelRequestHandle = true
    recovery {
      committing-retry-period = 1000
      async-committing-retry-period = 1000
      rollbacking-retry-period = 1000
      timeout-retry-period = 1000
    }
    undo {
      log-save-days = 7
      log-delete-period = 86400000
    }
    session {
      branch-async-queue-size = 5000 #branch async remove queue size
      enable-branch-async-remove = false #enable to asynchronous remove branchSession
    }
}
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 = admin
        password = "!QAZ2wsx"
        min-conn = 10
        max-conn = 100
        global-table = global_table
        branch-table = branch_table
        lock-table = lock_table
        distributed-lock-table = distributed_lock
        query-limit = 1000
        max-wait = 5000
    }
}
metrics {
    enabled = false
    registry-type = compact
    exporter-list = prometheus
    exporter-prometheus-port = 9898
}
transport {
    rpc-tc-request-timeout = 15000
    enable-tc-server-batch-send-response = false
    shutdown {
      wait = 3
    }
    thread-factory {
      boss-thread-prefix = NettyBoss
      worker-thread-prefix = NettyServerNIOWorker
      boss-thread-size = 1
    }
}

数据库脚本

当store.mode选择为db模式时，需要在数据库执行相应的脚本，创建支持事物日志的表。全局事务会话信息由3块内容构成，全局事务-->分支事务-->全局锁，对应表global_table、branch_table、lock_table。
执行脚本可从官方源代码中获取

启动

进入Seata的启动目录

cd /opt/seata/bin

执行启动脚本

sh seata-server.sh

补充说明：我在ubuntu环境下使用sh命令执行脚本会出现语法错误，但是可以使用bash命令执行，解决方案是将sh命令链接到bash

参考文献

seata-server的相关配置可以参考官网参数配置表，不同版本之前配置上存在差异，参考时需要对应到指定版本的配置。