安装Docker&使用Docker安装部署MySQL，Redis，RabbitMQ，Nacos，Seata，Minio

Docker安装

1. sudo yum remove docker
   docker–client
   docker–client–latest
   docker–common
   docker–latest
   docker–latest–logrotate
   docker–logrotate
   docker–engine
   

2. sudo yum remove –y yum–utils
   

3. sudo yum install –y yum–utils
   

4. sudo yum–config–manager —add–repo https://download.docker.com/linux/centos/docker–ce.repo
   
   如果这一步报错，说尝试其他镜像的话，执行下面步骤：
   

5. sudo yum install docker–ce docker-ce–cli containerd.io docker-buildx–plugin docker-compose–plugin
   

6. 启动 systemctl start docker

7. 查看docker版本 docker –v
   

8. 查看已经下载的镜像 docker images

9. 设置重启后自启动
   

10. 设置阿里云镜像库https://cr.console.aliyun.com/cn–hangzhou/instances/mirrors （注意：分4步执行！）
    10.1 sudo mkdir –p /etc/docker
    10.2 sudo tee /etc/docker/daemon.json <<-‘EOF’
    {
    “registry–mirrors”: [“https://71upgx1j.mirror.aliyuncs.com”]
    }
    EOF
    10.3 sudo systemctl daemon–reload
    10.4 sudo systemctl restart docker

Docker端口映射

安装MySQL

1. 下载镜像：docker pull mysql:8.0.30
2. 然后查看下载的镜像
   
3. 虚拟机的话需要设置ipv4 云服务器不需要这么做
   vim /usr/lib/sysctl.d/00-system.conf
   
   重启网络和Docker
   
4. 启动MySQL

docker run -p 3306:3306 --name=mysql -v /home/mysql8/log:/var/log/mysql -v /home/mysql8/data:/var/lib/mysql -v /home/mysql8/mysql-files:/var/lib/mysql-files -e MYSQL_ROOT_PASSWORD=Admin~123456 -d mysql:8.0.30 --character-set-server=utf8mb4

查看docker运行的容器：docker ps

查看docker容器运行状态：docker stats (ctrl+c退出)

使用navicat可以连接了

如果docker ps没有运行的MySQL容器，那么执行docker ps -a表示查看所有容器（包括运行失败的容器，status是Exited 退出状态的）

那么这个时候需要看mysql容器日志：docker logs mysql

重新启动容器：docker start CONTAINER_ID

修改MySQL密码 进入docker bash命令
docker exec –it mysql bash
mysql –u root –p


设置远程连接

退出bash命令 Ctrl+D

让MySQL跟随系统重启的时候启动
docker update mysql —restart=always

安装Redis

docker pull redis:6.2.7

cd /home/
mkdir redis6/conf –p （-p表示递归创建文件夹）
mkdir redis6/data -p
cd /home/redis6/conf
touch redis.conf

docker run -p 6379:6379 --name=redis -v /home/redis6/data:/data -v /home/redis6/conf/redis.conf:/etc/redis/redis.conf -d redis:6.2.7 redis-server /etc/redis/redis.conf

docker ps （默认Redis没有密码）

进入bash命令使用Redis

让redis跟随系统重启的时候启动
docker update redis–restart=always

给Redis添加密码
cd /home/redis6/conf
vim redis.conf

docker restart redis

安装RabbitMQ

下载镜像：
docker pull rabbitmq:management

启动

docker run --name rabbitmq -p 5671:5671 -p 5672:5672 -p 4369:4369 -p 15671:15671 -p 15672:15672 -p 25672:25672 --restart always -d rabbitmq:management

访问登录界面
http://192.168.233.128:15672/
账号密码都是guest

安装Nacos

docker pull nacos/nacos–server:v2.1.1

启动nacos

docker run --name nacos -e MODE=standalone -e JVM_XMS=128m -e JVM_XMX=128m -e JVM_XMN=64m -e JVM_MS=64m -e JVM_MMS=64m -p 8848:8848 -d nacos/nacos-server:v2.1.1

安装Seata

使用docker安装seata前提，client端（业务端）需要新增表undo_log，具体根据数据库类型来
数据库类型
MySQL为：

-- 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       NOT NULL COMMENT 'branch transaction id',
    `xid`           VARCHAR(128) 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 = utf8mb4 COMMENT ='AT transaction mode undo table';

seata–server端 需要新建数据库seata（这里名字要跟seata–server application.yml配置文件中store的db保持一致） 并创建下面4张表

根据数据库类型来
MySQL为：

-- -------------------------------- 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);

下载镜像：

docker pull seataio/seata-server:1.5.2

docker run --name seata-server -p 8091:8091 -p 7091:7091 -d seataio/seata-server:1.5.2

将容器内部resources文件夹拷贝出来并修改：

mkdir /home/seata/resources -p
docker cp seata-server:/seata-server/resources /home/seata/
cd /home/seata/resources
vim application.yml

参考application.example.yml修改application.yml的 config，registry，store具体如下：

seata:
  config:
    # support: nacos, consul, apollo, zk, etcd3
    type: nacos
    nacos:
     server-addr: 192.168.233.128:8848
     namespace:
     group: SEATA_GROUP
     username: nacos
     password: nacos

  registry:
    # support: nacos, eureka, redis, zk, consul, etcd3, sofa
    type: nacos
    nacos:
      application: seata-server
      server-addr: 192.168.233.128:8848
      group: SEATA_GROUP
      namespace:
      cluster: default
      username: nacos
      password: nacos
  store:
    # support: file 、 db 、 redis
    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

重新挂载配置文件，需要先移除容器再使用挂在配置启动容器：

docker stop seata-server
docker rm seata-server
docker run --name seata-server -p 8091:8091 -p 7091:7091 -v /home/seata/resources:/seata-server/resources -d seataio/seata-server:1.5.2

查看seata启动控制台 docker logs seata-server
至此，nacos上就会注册seata服务

业务端使用seata控制全局事务

依赖

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>io.seata</groupId>
                    <artifactId>seata-spring-boot-starter</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>io.seata</groupId>
            <artifactId>seata-spring-boot-starter</artifactId>
            <version>1.5.2</version>
        </dependency>

所有微服务配置文件需要添加

seata:
  enabled: true
  tx-service-group: imooc_tx_group
  service:
    vgroup-mapping:
      imooc_tx_group: SEATA_GROUP
    grouplist:
      SEATA_GROUP: 192.168.233.128:8091
  config:
    nacos:
      server-addr: 192.168.233.128:8848
      username: nacos
      password: nacos
  registry:
    nacos:
      server-addr: 192.168.233.128:8848
      username: nacos
      password: nacos

调用方serviceImpl方法上添加 @GlobalTransactional，并且一旦远程调用失败，则手动回滚全局事务

        // 发起远程调用，初始化用户简历，新增一条空记录
        GraceJSONResult graceJSONResult = workMicroServiceFeign.init(user.getId());
        if (graceJSONResult.getStatus() != 200) {
            // 如果调用状态不是200，则手动回滚全局事务
            String xid = RootContext.getXID();
            if (StringUtils.isNotBlank(xid)) {
                try {
                    GlobalTransactionContext.reload(xid).rollback();
                } catch (TransactionException e) {
                    e.printStackTrace();
                } finally {
                    GraceException.display(ResponseStatusEnum.USER_REGISTER_ERROR);
                }
            }
        }

或者使用切面来控制全局事务

package com.imooc.api;

import io.seata.core.context.RootContext;
import io.seata.core.exception.TransactionException;
import io.seata.tm.api.GlobalTransaction;
import io.seata.tm.api.GlobalTransactionContext;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.stereotype.Component;

@Slf4j
@Component
@Aspect
public class SeataTransactionAspect {

    /**
     * 调用service之前，手动加入或者创建全局事务
     * @param joinPoint
     * @throws TransactionException
     */
    @Before("execution(* com.imooc.service.impl..*.*(..))")
    public void beginTransaction(JoinPoint joinPoint) throws TransactionException {
        log.info("手动开启全局事务");
        // 手动开启全局事务
        GlobalTransaction gt = GlobalTransactionContext.getCurrentOrCreate();
        gt.begin();
    }

    /**
     * 捕获异常，则手动回滚全局事务
     * @param throwable
     * @throws Throwable
     */
    @AfterThrowing(
            throwing = "throwable",
            pointcut = "execution(* com.imooc.service.impl..*.*(..))"
    )
    public void seataRollback(Throwable throwable) throws Throwable {

        log.info("捕获到异常信息，则回滚，异常信息为：" + throwable.getMessage());

        // 从当前线程获得xid
        String xid = RootContext.getXID();
        if (StringUtils.isNotBlank(xid)) {
            GlobalTransactionContext.reload(xid).rollback();
        }
    }

}

安装MINIO

docker pull minio/minio
mkdir /home/minio/data -p
cd /home/minio

docker run --name minio -p 9000:9000 -p 9090:9090 -d --restart=always -e "MINIO_ROOT_USER=imooc" -e "MINIO_ROOT_PASSWORD=imooc123456" -v /home/minio/data:/data minio/minio server /data --console-address ":9090" -address ":9000"

通过访问：192.168.233.128:9090 可以访问minio客户端

代码007普通

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