seata集成Nacos

安装Nacos

1.下载地址

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https://github.com/alibaba/nacos/releases

2.解压修改配置文件

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vim   nacos/conf/application.properties   ###添加配置文件数据库
spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://127.0.0.1:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=nacos
db.password=nacos

3.创建nacos数据库并导入数据库结构（数据库官方建议5.6以上）

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1.创建nacos数据库
2.导入$Nacos_HOME/conf/nacos-mysql.sql

4.启动Nacos

Windows直接双击$Nacos_HOME/bin/startup.cmd

linux不要直接sh startup.sh 加入参数-m standalone或者改startup.sh -m参数，linux脚本默认集群启动，不改参数也不加启动参数会报错.

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]$ $Nacos_HOME/bin/startup.sh -m standalone

5.浏览器访问验证 IP:8848/nacos（默认账号密码为nacos/nacos）

安装seata并集成到nacos

1.下载地址

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https://github.com/seata/seata/releases

2.下载解压二进制包

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~]$ wget https://github.com/seata/seata/releases/download/v1.4.0/seata-server-1.4.0.tar.gz
~]$ tar xzvf seata-server-1.4.0.tar.gz
~]$ mv seata /usr/local/
~]$ chown  -R root:root  /usr/local/seata/*

3.准备seata使用的mysql数据库

注：二进制包里面没有mysql的sql文件，需要手动去github下载

https://github.com/seata/seata/tree/1.4.0/script/server/db

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mysql> create database seata DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
Query OK, 1 row affected, 2 warnings (0.00 sec)

mysql> grant all on seata.* to 'seata'@'%' identified by 'seata';
mysql> flush privileges;

mysql> use seata;
Database changed
mysql> source /root/seata-mysql.sql
Query OK, 0 rows affected, 1 warning (0.02 sec)
Query OK, 0 rows affected, 1 warning (0.02 sec)
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show tables;
+-----------------+
| Tables_in_seata |
+-----------------+
| branch_table    |
| global_table    |
| lock_table      |
+-----------------+

4.修改seata配置文件

修改file.conf配置文件

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]$ vim /usr/local/seata/conf/file.conf
-----------------------------------------------------------------
## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  mode = "db"
  
  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.jdbc.Driver"
    url = "jdbc:mysql://172.23.5.117:3306/seata"
    user = "seata"
    password = "seata"
    minConn = 5
    maxConn = 100 
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }
}

修改registry.conf配置文件

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]$ vim /usr/local/seata/conf/registry.conf
registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "nacos"
  loadBalance = "RandomLoadBalance"
  loadBalanceVirtualNodes = 10

  nacos {
    application = "seata-server"
    serverAddr = "172.23.5.117:8848"
    group = "SEATA_GROUP"
    namespace = "public"
    cluster = "default"
    username = "nacos"
    password = "nacos"
  }
}

config {
  # file、nacos 、apollo、zk、consul、etcd3
  type = "nacos"

  nacos {
    serverAddr = "172.23.5.117:8848"
    namespace = "public"
    group = "SEATA_GROUP"
    username = "nacos"
    password = "nacos"
  }
}

5.启动seata服务

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]$ mkdir /usr/local/seata/logs -p
]$ nohup /usr/local/seata/bin/seata-server.sh  172.23.1.55 >> /usr/local/seata/logs/seata.log 2>&1 &
]$ ss -tnl | grep 8091
LISTEN  0        128                          *:8091                   *:*

6.浏览器访问nacos控制台查看seata服务是否注册

7.上传seata信息至nacos配置中心

注：二进制包里面没有nacos-config.sh脚本文件，需要手动去github下载对应配置中心的脚本https://github.com/seata/seata/tree/1.4.0/script/config-center

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# nacos当作配置中心就下载：https://github.com/seata/seata/blob/1.4.0/script/config-center/nacos/nacos-config.sh 脚本到$seata_home/conf目录下

# 二进制包里面没有上传配置到配置中心的文件，需要我们手动在$seata_home/目录下新建一个config.txt文件输入以下内容
# 更多详细的参数看这里：https://github.com/seata/seata/blob/1.4.0/script/config-center/config.txt
]$ vim /usr/local/seata/config.txt
-----------------------------------------------------
service.vgroupMapping.my_test_tx_group=default
store.mode=db
store.db.datasource=druid
store.db.dbType=mysql
store.db.driverClassName=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://172.23.5.117:3306/seata?useUnicode=true
store.db.user=seata
store.db.password=seata

# 运行脚本上传配置到nacos配置中心
]$ sh /usr/local/seata/conf/nacos-config.sh -h 172.23.1.55
=========================================================================
 Complete initialization parameters,  total-count:8 ,  failure-count:0 
=========================================================================
 Init nacos config finished, please start seata-server.

推送配置信息至配置中心时具体的脚本参数看这里https://github.com/seata/seata/tree/1.4.0/script/config-center

8.登录到nacos查看配置中心信息

daemon功能演示

官方的Daemon示例：https://seata.io/zh-cn/blog/seata-ha-practice.html