Docker+nacos+seata1.3.0安装与使用配置教程

在此之前我搞了一天，虽然seata好用，用起来也超级简单，但是安装配置是真的麻烦，遇见了各种坑，下面来进入正题。o(╥﹏╥)o

一 . 版本

   注意：如果版本不匹配也会有各种报错，可以根据官网匹配版本。

seata：1.3.0
alibaba.cloud：2.2.3.release
nacos：2.0.2

二. docker安装搭建seata服务端

         2.1 下载seata镜像

docker pull seataio/seata-server:1.3.0

        2.2 在linux目录下创建registry.conf，我的路径在/data/seate/registry.conf，接下来的所有创建都在这个目录下

cd /data
mkdir seate
vim registry.conf

        2.3 registry.conf中的内容如下

registry {
  type = "nacos"
 
  nacos {
    application = "seata-server"
    serveraddr = "127.0.0.1:8848"
    group = "seata_group"
    namespace = ""
    cluster = "default"
    username = ""
    password = ""
  }
}
 
config {
  type = "nacos"
 
  nacos {
    serveraddr = "127.0.0.1:8848"
    namespace = ""
    group = "seata_group"
    username = ""
    password = ""
  }
}

注意registry和config需要在同一个组下,注册中心我用的是nacos，注意nacos的地址要改。

----->>>这里我插一句，需要新建一个数据库seata，并且新建三张表，

-- -------------------------------- 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` (`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`            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 = utf8;
 
-- the table to store lock data
create table if not exists `lock_table`
(
    `row_key`        varchar(128) not null,
    `xid`            varchar(96),
    `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;

        实现分布式每个业务库都要加一张表undo_log，不然会报错，

create table `undo_log` (
  `id` bigint(20) not null auto_increment comment '主键',
  `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',
  primary key (`id`),
  unique key `ux_undo_log` (`xid`,`branch_id`)
) engine=innodb auto_increment=9 default charset=utf8 comment='at transaction mode undo table';

2.4 创建推送配置文件 vim config.txt，是将文件中的配置推送到nacos中去。

vim config.txt

service.vgroupmapping.btb_tx_group=default
store.mode=db
store.db.datasource=druid
store.db.dbtype=mysql
store.db.driverclassname=com.mysql.cj.jdbc.driver
store.db.url=jdbc:mysql://172.0.0.1:3306/seata?useunicode=true
store.db.user=root
store.db.password=root
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

注意btb_tx_group需要与客户端保持一致,顺便注意数据库驱动，如果是8以上用我的这个驱动，5.7的用com.mysql.jdbc.driver

        2.5 创建推送脚本，因为执行脚本要在config.txt的下一层，所有加一层目录

mkdir sh
cd sh
vim nacos-config.sh

内容如下：最好不要有任何的修改

#!/usr/bin/env bash
# copyright 1999-2019 seata.io group.
#
# licensed under the apache license, version 2.0 (the "license");
# you may not use this file except in compliance with the license.
# you may obtain a copy of the license at、
#
#      http://www.apache.org/licenses/license-2.0
#
# unless required by applicable law or agreed to in writing, software
# distributed under the license is distributed on an "as is" basis,
# without warranties or conditions of any kind, either express or implied.
# see the license for the specific language governing permissions and
# limitations under the license.
 
while getopts ":h:p:g:t:u:w:" opt
do
  case $opt in
  h)
    host=$optarg
    ;;
  p)
    port=$optarg
    ;;
  g)
    group=$optarg
    ;;
  t)
    tenant=$optarg
    ;;
  u)
    username=$optarg
    ;;
  w)
    password=$optarg
    ;;
  ?)
    echo " usage option: $0 [-h host] [-p port] [-g group] [-t tenant] [-u username] [-w password] "
    exit 1
    ;;
  esac
done
 
if [[ -z ${host} ]]; then
    host=localhost
fi
if [[ -z ${port} ]]; then
    port=8848
fi
if [[ -z ${group} ]]; then
    group="seata_group"
fi
if [[ -z ${tenant} ]]; then
    tenant=""
fi
if [[ -z ${username} ]]; then
    username=""
fi
if [[ -z ${password} ]]; then
    password=""
fi
 
nacosaddr=$host:$port
contenttype="content-type:application/json;charset=utf-8"
 
echo "set nacosaddr=$nacosaddr"
echo "set group=$group"
 
failcount=0
templog=$(mktemp -u)
function addconfig() {
  curl -x post -h "${contenttype}" "http://$nacosaddr/nacos/v1/cs/configs?dataid=$1&group=$group&content=$2&tenant=$tenant&username=$username&password=$password" >"${templog}" 2>/dev/null
  if [[ -z $(cat "${templog}") ]]; then
    echo " please check the cluster status. "
    exit 1
  fi
  if [[ $(cat "${templog}") =~ "true" ]]; then
    echo "set $1=$2 successfully "
  else
    echo "set $1=$2 failure "
    (( failcount++ ))
  fi
}
 
count=0
for line in $(cat $(dirname "$pwd")/config.txt | sed s/[[:space:]]//g); do
  (( count++ ))
	key=${line%%=*}
    value=${line#*=}
	addconfig "${key}" "${value}"
done
 
echo "========================================================================="
echo " complete initialization parameters,  total-count:$count ,  failure-count:$failcount "
echo "========================================================================="
 
if [[ ${failcount} -eq 0 ]]; then
	echo " init nacos config finished, please start seata-server. "
else
	echo " init nacos config fail. "
fi

        2.6 执行推送脚本，后面是nacos的ip地址，如果端口不是8848还需要加一个-p 8884你的端口

bash nacos-config.sh -h 127.0.0.1

        2.7 创建容器，注意seata_ip如果是阿里云服务器需要写外网ip

docker run -d --restart always --name seata-server -p 8091:8091 -e seata_ip=172.0.0.1 -e seata_config_name=file:/data/seata/registry -v /data/seata:/data/seata  seataio/seata-server:1.3.0

三 . 客户端（也就是微服务，项目中使用seata）

3.1 pom.xml 引入依赖

<!-- seata分布式事务-->
        <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>1.3.0</version>
        </dependency>

注意这里一定要剔除原来自带的 io.seata包，并且服务端和客户端的包版本要一致。

3.2 配置项目配置文件

#seata
seata.application-id=${spring.application.name}
seata.tx-service-group=btb_tx_group
seata.config.type=nacos
seata.config.nacos.server-addr=172.0.0.1:8848
seata.config.nacos.group=seata_group
seata.registry.type=nacos
seata.registry.nacos.application=seata-server
seata.registry.nacos.server-addr=172.0.0.1:8848
seata.registry.nacos.group=seata_group

注意：这里的btb_tx_group要跟服务端的vgroupmapping后面的key保持一致，

如：service.vgroupmapping.btb_tx_group=default

3.3 加入注解使用

@globaltransactional

扩展： 我用的是一个数据库，执行报错，说我缺少主键，于是我在表undo_log加了一个增的主键id，上面的创建undo_log表的sql是我加了id的，官方给的是没有id的。请知晓！！！！

问题：单数源是有报错的，原因是因为我是一个数据库，需要设置代理配置如下 ，根据自己实际情况是指配置文件，不然会报错

#单数据源
seata.enable-auto-data-source-proxy=true
#多数据源
seata.enable-auto-data-source-proxy=false

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