1、Seata-Server下载
官方文档地址：https://seata.io/zh-cn/docs/ops/deploy-guide-beginner.html。
下载地址：https://github.com/seata/seata/releases，这里下载的是1.5.1版本，seata-server-1.5.1.tar.gz。
解压文件目录如下
2、注册中心配置
Seata支持的注册中心有file、nacos、eureka、redis、zk、consul、etcd3，这里以Nacos为例，参考conf文件夹下的application.example.yml，修改conf/application.yml配置中注册中心，调整详情如下：
3、配置中心配置
Seata支持的注册中心有file、nacos、eureka、redis、zk、consul、etcd3，这里以Nacos为例，修改conf/application.yml配置中心，详情如下：
3.1、Seata-Server 1.4.2以前版本的config设置
3.1.1、配置模板config.txt获取
Seata的一些配置上传到Nacos中，使用官方提供了config.txt模板，修改其中参数，上传到Nacos中，配置模板下载地址：https://github.com/seata/seata/tree/develop/script/config-center。
3.1.2、调整config.txt详情
注意需要注释value为空的配置项，因为value为空的配置项无法通过脚本上传到Nacos的配置中心。
#For details about configuration items, see https://seata.io/zh-cn/docs/user/configurations.html #Transport configuration, for client and server transport.type=TCP transport.server=NIO transport.heartbeat=true transport.enableTmClientBatchSendRequest=false transport.enableRmClientBatchSendRequest=true transport.enableTcServerBatchSendResponse=false transport.rpcRmRequestTimeout=30000 transport.rpcTmRequestTimeout=30000 transport.rpcTcRequestTimeout=30000 transport.threadFactory.bossThreadPrefix=NettyBoss transport.threadFactory.workerThreadPrefix=NettyServerNIOWorker transport.threadFactory.serverExecutorThreadPrefix=NettyServerBizHandler transport.threadFactory.shareBossWorker=false transport.threadFactory.clientSelectorThreadPrefix=NettyClientSelector transport.threadFactory.clientSelectorThreadSize=1 transport.threadFactory.clientWorkerThreadPrefix=NettyClientWorkerThread transport.threadFactory.bossThreadSize=1 transport.threadFactory.workerThreadSize=default transport.shutdown.wait=3 transport.serialization=seata transport.compressor=none #Transaction routing rules configuration, only for the client # ===================== 调整事务分组 ======================== # === service.vgroupMapping.可以自定义=default，参数值必须与application.yml中的注册中心的cluster的值保持一致，默认都为default === service.vgroupMapping.trxgroup=default #If you use a registry, you can ignore it # === service.分组值.grouplist 集群搭建时使用，seata-server搭建的IP:PORT === service.default.grouplist=192.168.33.55:8091 service.enableDegrade=false service.disableGlobalTransaction=false # ===================== 调整事务分组 ======================== #Transaction rule configuration, only for the client client.rm.asyncCommitBufferLimit=10000 client.rm.lock.retryInterval=10 client.rm.lock.retryTimes=30 client.rm.lock.retryPolicyBranchRollbackOnConflict=true client.rm.reportRetryCount=5 client.rm.tableMetaCheckEnable=true client.rm.tableMetaCheckerInterval=60000 client.rm.sqlParserType=druid client.rm.reportSuccessEnable=false client.rm.sagaBranchRegisterEnable=false client.rm.sagaJsonParser=fastjson client.rm.tccActionInterceptorOrder=-2147482648 client.tm.commitRetryCount=5 client.tm.rollbackRetryCount=5 client.tm.defaultGlobalTransactionTimeout=60000 client.tm.degradeCheck=false client.tm.degradeCheckAllowTimes=10 client.tm.degradeCheckPeriod=2000 client.tm.interceptorOrder=-2147482648 client.undo.dataValidation=true client.undo.logSerialization=jackson client.undo.onlyCareUpdateColumns=true server.undo.logSaveDays=7 server.undo.logDeletePeriod=86400000 client.undo.logTable=undo_log client.undo.compress.enable=true client.undo.compress.type=zip client.undo.compress.threshold=64k #For TCC transaction mode tcc.fence.logTableName=tcc_fence_log tcc.fence.cleanPeriod=1h #Log rule configuration, for client and server log.exceptionRate=100 #Transaction storage configuration, only for the server. The file, db, and redis configuration values are optional. # ===================== 调整存储模式为db ======================== store.mode=db store.lock.mode=file store.session.mode=file #Used for password encryption #store.publicKey= # ===================== 调整存储模式为db ======================== #If `store.mode,store.lock.mode,store.session.mode` are not equal to `file`, you can remove the configuration block. store.file.dir=file_store/data store.file.maxBranchSessionSize=16384 store.file.maxGlobalSessionSize=512 store.file.fileWriteBufferCacheSize=16384 store.file.flushDiskMode=async store.file.sessionReloadReadSize=100 #These configurations are required if the `store mode` is `db`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `db`, you can remove the configuration block. # ===================== 调整JDBC连接配置 ======================== store.db.datasource=druid store.db.dbType=mysql store.db.driverClassName=com.mysql.cj.jdbc.Driver store.db.url=jdbc:mysql://192.168.33.55:3306/seata?useUnicode=true&rewriteBatchedStatements=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.distributedLockTable=distributed_lock store.db.queryLimit=100 store.db.lockTable=lock_table store.db.maxWait=5000 # ===================== 调整JDBC连接配置 ======================== #These configurations are required if the `store mode` is `redis`. If `store.mode,store.lock.mode,store.session.mode` are not equal to `redis`, you can remove the configuration block. store.redis.mode=single store.redis.single.host=127.0.0.1 store.redis.single.port=6379 #store.redis.sentinel.masterName= #store.redis.sentinel.sentinelHosts= store.redis.maxConn=10 store.redis.minConn=1 store.redis.maxTotal=100 store.redis.database=0 #store.redis.password= store.redis.queryLimit=100 #Transaction rule configuration, only for the server server.recovery.committingRetryPeriod=1000 server.recovery.asynCommittingRetryPeriod=1000 server.recovery.rollbackingRetryPeriod=1000 server.recovery.timeoutRetryPeriod=1000 server.maxCommitRetryTimeout=-1 server.maxRollbackRetryTimeout=-1 server.rollbackRetryTimeoutUnlockEnable=false server.distributedLockExpireTime=10000 server.xaerNotaRetryTimeout=60000 server.session.branchAsyncQueueSize=5000 server.session.enableBranchAsyncRemove=false server.enableParallelRequestHandle=false #Metrics configuration, only for the server metrics.enabled=false metrics.registryType=compact metrics.exporterList=prometheus metrics.exporterPrometheusPort=9898
3.1.3、将配置信息添加到seata-server的conf配置文件夹下
3.1.4、添加上传脚本
在地址：https://github.com/seata/seata/tree/develop/script/config-center/nacos中获取需要上传的配置信息脚本nacos-config.sh。
nacos-config.sh脚本详情如下：
#!/bin/sh
# 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=$group"
urlencode() {
length="${#1}"
i=0
while [ $length -gt $i ]; do
char="${1:$i:1}"
case $char in
[a-zA-Z0-9.~_-]) printf $char ;;
*) printf '%%%02X' "'$char" ;;
esac
i=`expr $i + 1`
done
}
failCount=0
tempLog=$(mktemp -u)
function addConfig() {
dataId=`urlencode $1`
content=`urlencode $2`
curl -X POST -H "${contentType}" "http://$nacosAddr/nacos/v1/cs/configs?dataId=$dataId&group=$group&content=$content&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=`expr $failCount + 1`
fi
}
count=0
COMMENT_START="#"
# 修改config.txt配置文件位置
# for line in $(cat $(dirname "$PWD")/config.txt | sed s/[[:space:]]//g); do
for line in $(cat ../conf/config.txt | sed s/[[:space:]]//g); do
if [[ "$line" =~ ^"${COMMENT_START}".* ]]; then
continue
fi
count=`expr $count + 1`
key=${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
注意：需要调整config.txt配置文件的位置。
3.1.5、Seata配置项上传至Nacos配置中心
5.1、上传脚本参数命令说明
根据nacos-config.sh脚本中内容，可以得到如下参数：
sh nacos-config.sh -h ip地址 -p 端口号 -g 配置分组 -t 命名空间 -u 用户 -w 密码
参数说明：
-h：host，nacos的ip地址
-p：port，nacos的端口号，默认8848
-g：配置分组，seata默认为SEATA_GROUP
-t：租户信息，对应Nacos的命名空间ID，默认为空
-u：nacos用户名
-w：nacos的密码
5.2、换行符问题
执行脚本将配置信息上传至Nacos：
sh nacos-config.sh -h 192.168.33.55 -p 8848 -g SEATA_GROUP -u nacos -w nacos
出现如下问题：
nacos-config.sh: line 15: $'\r': command not found nacos-config.sh: line 18: syntax error near unexpected token `$'in\r'' 'acos-config.sh: line 18: ` case $opt in
问题原因：
nacos-config.sh脚本文件是在Windows中创建的，内容复制也是在Windows中完成的，通过命令上传至Linux。该问题是因为Linux和Windows的换行符问题导致的。
解决方案：
执行如下命令安装dos2unix
yum install dos2unix
转换Windows中的换行符：
dos2unix nacos-config.sh
5.3、部分配置项上传失败问题
再次执行将配置信息上传至Nacos：
问题原因：
在config.txt配置中，存在value为空的配置信息，注释这些为空的配置信息，即可解决此问题。
5.4、上传的配置项验证
Nacos的配置中心详情如下：
3.2、Seata-Server 1.4.2以后版本的config设置
Seata从1.4.2版本开始，支持从一个Nacos dataId中获取所有配置信息，添加Nacos配置文件，相关属性需要与application.yml中的信息向对象，详情如下：
新建Nacos配置文件，Data Id为 seataServer.properties，Group为 SEATA_GROUP，properties配置内容为调整后的config.txt，配置详情同Seata1.4.2以前版本的config配置详情：
3.3、Seata-Server 1.4.2前后版本配置中心的不同
在Seata 1.4.2以前的版本，因为没有dataId配置项，所以config.txt中每一个配置项的key作为dataId，即一个配置项对应一个配置文件；在Seata 1.4.2以后的版本，出现了dataId配置项，可以配置一个dataId管理Seata-Server所有的配置项。
4、Seata存储模式调整
官方文档地址：https://seata.io/zh-cn/docs/ops/deploy-guide-beginner.html。
4.1、存储模式
Server端存储模式（store.mode）支持三种：
1、file：单机模式，全局事务会话信息内存中读写并持久化本地文件root.data，性能较高（默认）
2、DB：高可用模式，全局事务会话信息通过DB共享，相对性能差一些
3、redis：Seata-Server1.3及以上版本支持，性能较高，存在事务信息丢失风险，需要配合实际场景使用。
4.2、配置调整
修改conf/application.yml配置，调整内容如下：
使用的mysql版本为8.0以上使用驱动包为com.mysql.cj.jdbc.Driver；8.0以下版本为驱动包为com.mysql.jdbc.Driver。
application.example.yml示例配置中，有global_table、branch_table、lock_table、distributed_lock这四张表，建表语句地址：https://github.com/seata/seata/blob/develop/script/server/db，详情如下：
-- 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` (`xid`)
) 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);
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);
执行结果如下：
5、启动Seata
进入到bin目录，执行启动命令：
sh seata-server.sh
出现如下日志提示表示服务seata-server启动成功。
访问seata-server的控制台，账密：seata/seata，界面详情如下：
注册中心服务列表展示如下：
至此，seata-server启动成功。
标签：Seata,lock,seata,Server,client,server,config,store,分布式 From： https://www.cnblogs.com/RunningSnails/p/18011595