seata-server安装、运行（ubuntu）

seata-server为seata中的事务协调器。

 

seata的wiki

https://github.com/seata/seata/wiki/Home_Chinese

 

一、下载并安装

wget -P /opt/downloads https://github.com/seata/seata/releases/download/v0.5.1/seata-server-0.5.1.tar.gz
mkdir /opt/seata-server
tar zxvf /opt/downloads/seata-server-0.5.1.tar.gz -C /opt/seata-server

 

二、导入配置

本文使用nacos作为配置中心和服务发现，file、apollo、redis、zk、consul等也可以举一反三。

我们这里用默认的导入先让seata-server跑起来，过后对着file.conf和java程序启动后的报错调整，重新导入即可。

vim /opt/seata-server/conf/nacos-config.txt

以下是我根据自己的环境修改后的配置值

cluster":"default","ip":"sxw-PC","metadata":{}

you must config ip when you start your fescar server .

 

transport.type=TCP
transport.server=NIO
transport.heartbeat=true
transport.thread-factory.boss-thread-prefix=NettyBoss
transport.thread-factory.worker-thread-prefix=NettyServerNIOWorker
transport.thread-factory.server-executor-thread-prefix=NettyServerBizHandler
transport.thread-factory.share-boss-worker=false
transport.thread-factory.client-selector-thread-prefix=NettyClientSelector
transport.thread-factory.client-selector-thread-size=1
transport.thread-factory.client-worker-thread-prefix=NettyClientWorkerThread
transport.thread-factory.boss-thread-size=1
transport.thread-factory.worker-thread-size=8
service.vgroup_mapping.my_test_tx_group=default
service.vgroup_mapping.user-web-fescar-service-group=default
service.vgroup_mapping.user-fescar-service-group=default
service.vgroup_mapping.order-fescar-service-group=default
service.vgroup_mapping.business-service-fescar-service-group=default
service.vgroup_mapping.account-service-fescar-service-group=default
service.vgroup_mapping.storage-service-fescar-service-group=default
service.vgroup_mapping.order-service-fescar-service-group=default
service.default.grouplist=192.168.1.101:8091
service.enableDegrade=false
service.disable=false
client.async.commit.buffer.limit=10000
client.lock.retry.internal=10
client.lock.retry.times=30
store.mode=file
store.file.dir=file_store/data
store.file.max-branch-session-size=16384
store.file.max-global-session-size=512
store.file.file-write-buffer-cache-size=16384
store.file.session.reload.read_size=100
store.db.driver_class=com.mysql.jdbc.Driver
store.db.url=jdbc:mysql://192.168.1.102:3306/seata_server
store.db.user=root
store.db.password=123456

 

 

vim /opt/seata-server/conf/nacos-config.sh

for line in $(cat nacos-config.txt)

改为

for line in $(cat /opt/seata-server/conf/nacos-config.txt)

  

导入配置到nacos。

格式为sh nacos-config.sh $Nacos-Server-IP

因为nacos-config.sh脚本中已经把8848端口写死，如果你的nacos-server不是8848端口，请修改nacos-config.sh。

bash /opt/seata-server/conf/nacos-config.sh 192.168.1.102

192.168.1.102是nacos的ip

脚本执行最后输出 "init nacos config finished, please start seata-server." 说明推送配置成功。若想进一步确认可登陆Nacos控制台->配置列表->筛选查询Group为FESCAR_GROUP的配置项。

将/opt/seata-server/conf/nacos-config.txt 脚本修改后重新导入即可。

 

 

三、启动seata-server(事务协调器)

修改日志目录(非必须)

vim /opt/seata-server/conf/logback.xml

改为

 

配置修改

vim /opt/seata-server/conf/registry.conf 并复制到java代码的properties目录下

registry {
  type = "nacos"

  nacos {    
    serverAddr = "192.168.1.102"
    namespace = "public"
    cluster = "default"
  }
}
config {
  type = "nacos"

  nacos {
    serverAddr = "192.168.1.102"
    namespace = "public"
    cluster = "default"
  }
} 

注：serverAddr不要填端口号   public为小写

 

 

启动格式sh seata-server.sh $LISTEN_PORT $PATH_FOR_PERSISTENT_DATA $IP(此参数可选)

$IP参数 用于多IP环境下指定 Fescar-Server 注册服务的IP    虽然是可选，但还是要填，之前我偷懒没填，一大堆虚拟ip各种乱定位。

 

命令启动

sh /opt/seata-server/bin/seata-server.sh 8091 file 192.168.1.102

 

守护进程启动

vim /opt/seata-server/startup.sh

填入

#!/bin/bash
sh /opt/seata-server/bin/seata-server.sh 8091 file 192.168.1.102

 

vim /lib/systemd/system/seata-server.service

文件中填入

[Unit]
Description=seata-server
After=syslog.target network.target remote-fs.target nss-lookup.target

[Service]
Type=simple
ExecStart=/opt/seata-server/startup.sh
Restart=always
PrivateTmp=true

[Install]
WantedBy=multi-user.target

赋予权限

chmod 777 /opt/seata-server/startup.sh
chmod 777 /lib/systemd/system/seata-server.service

启用服务

systemctl enable seata-server.service
systemctl daemon-reload

运行

systemctl start seata-server.service

查看状态

systemctl status seata-server.service

查看进程

ps -ef|grep seata-server

运行成功后可在Nacos控制台的 服务列表 看到 服务名serverAddr的条目

 

 

四、创建数据表

(创建mysql数据库略)

UNDO_LOG table is required by SEATA AT mode.

CREATE TABLE `undo_log` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`branch_id` bigint(20) NOT NULL,
`xid` varchar(100) NOT NULL,
`rollback_info` longblob NOT NULL,
`log_status` int(11) NOT NULL,
`log_created` datetime NOT NULL,
`log_modified` datetime NOT NULL,
`ext` varchar(100) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

每个业务数据库都要建一个undo_log表

 

转载于:https://www.cnblogs.com/wintersoft/p/10548177.html