1. 下载：https://github.com/seata/seata/releases
解压，注意看下里面有个README-zh.md，相关的一些脚本可以在这个文件的链接找到，因为不同的seata版本，脚本可能有差异，需要注意下。我这里把1.4.0的这个文件内容补充在下面：
脚本说明
client
存放用于客户端的配置和SQL
- at: AT模式下的
undo_log建表语句 - conf: 客户端的配置文件
- saga: SAGA 模式下所需表的建表语句
- spring: SpringBoot 应用支持的配置文件
server
存放server侧所需SQL和部署脚本
- db: server 侧的保存模式为
db时所需表的建表语句 - docker-compose: server 侧通过 docker-compose 部署的脚本
- helm: server 侧通过 Helm 部署的脚本
- kubernetes: server 侧通过 Kubernetes 部署的脚本
config-center
用于存放各种配置中心的初始化脚本，执行时都会读取
config.txt配置文件，并写入配置中心
- nacos: 用于向 Nacos 中添加配置
- zk: 用于向 Zookeeper 中添加配置，脚本依赖 Zookeeper 的相关脚本，需要手动下载；ZooKeeper相关的配置可以写在
zk-params.txt中，也可以在执行的时候输入 - apollo: 向 Apollo 中添加配置，Apollo 的地址端口等可以写在
apollo-params.txt，也可以在执行的时候输入 - etcd3: 用于向 Etcd3 中添加配置
- consul: 用于向 consul 中添加配置
我按这个文档，找了下相关的脚本地址：https://github.com/seata/seata/tree/develop/script/client
这里我把undo_log的脚本贴在下面：
-- for AT mode you must to init this sql for you business database. the seata server not need it.
CREATE TABLE IF NOT EXISTS `undo_log`
(
`branch_id` BIGINT(20) NOT NULL COMMENT 'branch transaction id',
`xid` VARCHAR(100) NOT NULL COMMENT 'global transaction id',
`context` VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',
`rollback_info` LONGBLOB NOT NULL COMMENT 'rollback info',
`log_status` INT(11) NOT NULL COMMENT '0:normal status,1:defense status',
`log_created` DATETIME(6) NOT NULL COMMENT 'create datetime',
`log_modified` DATETIME(6) NOT NULL COMMENT 'modify datetime',
UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)
) ENGINE = InnoDB
AUTO_INCREMENT = 1
DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';
2. 修改registry.conf的注册中心和配置中心为nacos
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
type = "nacos"
loadBalance = "RandomLoadBalance"
loadBalanceVirtualNodes = 10
nacos {
application = "seata-server"
serverAddr = "127.0.0.1:8848"
group = "SEATA_GROUP"
namespace = ""
cluster = "default"
username = ""
password = ""
}
eureka {
serviceUrl = "http://localhost:8761/eureka"
application = "default"
weight = "1"
}
redis {
serverAddr = "localhost:6379"
db = 0
password = ""
cluster = "default"
timeout = 0
}
zk {
cluster = "default"
serverAddr = "127.0.0.1:2181"
sessionTimeout = 6000
connectTimeout = 2000
username = ""
password = ""
}
consul {
cluster = "default"
serverAddr = "127.0.0.1:8500"
}
etcd3 {
cluster = "default"
serverAddr = "http://localhost:2379"
}
sofa {
serverAddr = "127.0.0.1:9603"
application = "default"
region = "DEFAULT_ZONE"
datacenter = "DefaultDataCenter"
cluster = "default"
group = "SEATA_GROUP"
addressWaitTime = "3000"
}
file {
name = "file.conf"
}
}
config {
# file、nacos 、apollo、zk、consul、etcd3
type = "nacos"
nacos {
serverAddr = "127.0.0.1:8848"
namespace = ""
group = "SEATA_GROUP"
username = ""
password = ""
}
consul {
serverAddr = "127.0.0.1:8500"
}
apollo {
appId = "seata-server"
apolloMeta = "http://192.168.1.204:8801"
namespace = "application"
apolloAccesskeySecret = ""
}
zk {
serverAddr = "127.0.0.1:2181"
sessionTimeout = 6000
connectTimeout = 2000
username = ""
password = ""
}
etcd3 {
serverAddr = "http://localhost:2379"
}
file {
name = "file.conf"
}
}
3. 配置好之后，启动seata
# nohup sh seata-server.sh -p 8091 -h 127.0.0.1 -m file > seata.log &
-p 指定启动seata server的端口号。
-h 指定seata server所绑定的主机。
-m 事务日志、事务执行信息存储的方式，目前支持file（文件方式）、db（数据库方式，建表语句请查看config/db_store.sql、config/db_undo_log.sql）
这里如果是公网连接seata的话，需要将127.0.0.1换成公网IP。
启动之后可以在nacos的控制台上看到注册的服务：
在这里插入图片描述
补充几点：
1. 如果你的seata使用的模式是db模式，
在这里插入图片描述
请注意，像使用云主机的话，数据库的连接名类似如下：
jdbc:mysql://rm-8vbqa4stkv73491rkso.mysql.zhangbei.rds.aliyuncs.com:3306/ry-cloud?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8
否则的话，启动会报错。
启动方式改为-m db，具体如下：
# nohup sh seata-server.sh -p 8091 -h 106.13.210.114 -m db > seata.log &
当然这样会报错，在这之前咱们需要将seata的配置导入到nacos中：
进入seata/conf目录下，创建一个nacos-config.sh文件：
# touch nacos-config.sh
将https://github.com/seata/seata/blob/develop/script/config-center/nacos/nacos-config.sh的内容编辑进如nacos-config.sh
然后到seata目录创建config.txt，注意跟nacos-config.sh不在同一个目录
# touch config.txt
将如下内容写入：
service.vgroupMapping.my_test_tx_group=default
service.default.grouplist=127.0.0.1:8091
service.enableDegrade=false
service.disableGlobalTransaction=false
store.mode=file
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
store.db.user=username
store.db.password=password
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
最后再执行导入：
[root@instance-0terk04p conf]# ls
file.conf file.conf.example logback.xml META-INF nacos-config.sh README.md README-zh.md registry.conf
[root@instance-0terk04p conf]# sh nacos-config.sh 127.0.0.1
set nacosAddr=localhost:8848
set group=SEATA_GROUP
Set service.vgroupMapping.my_test_tx_group=default successfully
Set service.default.grouplist=127.0.0.1:8091 successfully
Set service.enableDegrade=false successfully
Set service.disableGlobalTransaction=false successfully
Set store.mode=file successfully
Set store.db.datasource=druid successfully
Set store.db.dbType=mysql successfully
Set store.db.driverClassName=com.mysql.cj.jdbc.Driver successfully
Set store.db.url=jdbc:mysql://rm-8vbqa4stkv73491rkso.mysql.zhangbei.rds.aliyuncs.com:3306/ry-cloud?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8 successfully
Set store.db.user=dongda successfully
Set store.db.password=$Fuxiaoxue123 successfully
Set store.db.minConn=5 successfully
Set store.db.maxConn=30 successfully
Set store.db.globalTable=global_table successfully
Set store.db.branchTable=branch_table successfully
Set store.db.queryLimit=100 successfully
Set store.db.lockTable=lock_table successfully
Set store.db.maxWait=5000 successfully
=========================================================================
Complete initialization parameters, total-count:18 , failure-count:0
=========================================================================
Init nacos config finished, please start seata-server.
[root@instance-0terk04p conf]#
导入之后，可以在nacos看到配置信息：
图片.png
然后再把seata重启下
下一节我们来介绍分布式事务如何使用seata
