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seata docker 高可用部署的详细介绍

运维开发网 https://www.qedev.com 2021-07-08 15:09 出处:网络 作者: 路过君_P
版本1.4.2官方文档dockerhub启动通过环境变量SEATA_CONFIG_NAME指定配置文件位置/root/seata-config/registry.confdockerrun--na...

版本

1.4.2

官方文档

dockerhub

启动

通过环境变量SEATA_CONFIG_NAME指定配置文件位置/root/seata-config/registry.conf

docker run --name seata-server \
        -p 8091:8091 \
        -e SEATA_CONFIG_NAME=file:/root/seata-config/registry \ 
        -v /User/seata/config:/root/seata-config  \
        seataio/seata-server

配置文件

实现高可用需要依赖注册中心,配置中心,数据库

registry.conf

registry {
  type = "nacos"

  nacos {
    application = "seata-server"
    serverAddr = "192.168.199.2"
    namespace = "test"
    group = "SEATA_GROUP"
    cluster = "default"
    username = ""
    password = ""
  }
}

config {
  type = "nacos"  
  nacos {
    serverAddr = "192.168.199.2"
    namespace = "test"
    group = "SEATA_GROUP"
    username = ""
    password = ""
  }
}

NACOS配置

注:使用nacos配置,需要在对应分组(SEATA_GROUP)下针对配置项目逐条配置文本值,而不是创建包含所有配置的properties文件,可以使用官方源码中的脚本导入

全部可用配置参考

1. 使用数据库

store.mode=db

store.db.datasource=druid

store.db.dbType=mysql

store.db.driverClassName=com.mysql.jdbc.Driver

store.db.url=jdbc:mysql://192.168.199.2:3306/seata?useUnicode=true&rewriteBatchedStatements=true

store.db.user=root

store.db.password=123456

创建数据库

建库脚本

-- -------------------------------- 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_gmt_modified_status` http://www.cppcns.com(`gmt_modified`, `status`),
    KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

-- 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`            TIlMTcImnNYINhttp://www.cppcns.comT,
    `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 = utf8;

-- the table to store loc编程客栈k 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),
    `gmt_create`     DATETIME,
    `gmt_modified`   DATETIME,
    PRIMARY KEY (`row_key`),
    KEY `idx_branch_id` (`branch_id`)
) ENGINE = InnoDB
  DEFAULT CHARSET = utf8;

异常处理

1. 客户端报错 Data too long for column ‘application_id'

io.seata.core.exception.TmTransactionException: TransactionException[begin global request failed. xid=null, msg=Data truncation: Data too long for column ‘application_id' at row 1]

at io.seata.tm.DefaultTransactionManager.begin(DefaultTransactionManager.java:55) ~[seata-all-1.3.0.jar:1.3.0]

atwww.cppcns.com io.seata.tm.api.DefaultGlobalTransaction.begin(DefaultGlobalTransaction.java:104) ~[seata-all-1.3.0.jar:1.3.0]

at io.seata.tm.api.TransactionalTemplate.beginTransaction(TransactionalTemplate.java:175) ~[seata-all-1.3.0.jar:1.3.0]

seata数据库global_table.application_id字段默认长度为varchar(32),如果客户端应用ID超长则报此错

手动修改字段类型增加长度即可

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