Seata服务搭建 —— nacos
- Seata配置Nacos注册中心 负责事务参与者(微服务)和TC通信
- 启动Seata Server
Seata配置Nacos注册中心 负责事务参与者(微服务)和TC通信
流程图：
将Seata Server注册到Nacos，修改conf目录下的registry.conf配置
registry {
# file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
type = "nacos"
nacos {
application = "seata-server"
serverAddr = "127.0.0.1:8848"
group = "SEATA_GROUP"
namespace = ""
cluster = "default"
username = "nacos"
password = "nacos"
}
}#设置负载均衡策略，默认是轮询
loadBalance = “RandomLoadBalance”
loadBalanceVirtualNodes = 10
Seata服务 使用Nacos配置中心，修改conf目录下的registry.conf配置
config {
# file、nacos 、apollo、zk、consul、etcd3
type = "nacos"
nacos {
serverAddr = "127.0.0.1:8848"
namespace = ""
group = "SEATA_GROUP"
username = "nacos"
password = "nacos"
}
consul {
serverAddr = "127.0.0.1:8500"
}
apollo {
appId = "seata-server"
apolloMeta = "http://192.168.1.204:8801"
namespace = "application"
}
zk {
serverAddr = "127.0.0.1:2181"
sessionTimeout = 6000
connectTimeout = 2000
username = ""
password = ""
}
etcd3 {
serverAddr = "http://localhost:2379"
}
file {
name = "file.conf"
}
}
seata默认的配置文件在：
下载地址：https://github.com/seata/seata/blob/develop/script/config-center/config.txt
修改seata配置文件：
my_test_tx_group需要与客户端保持一致，default需要跟客户端和registry中的cluster保持一致。
my_test_tx_group可以自定义 比如：(beijing)，对应的client也要去设置：
seata.service.vgroup-mapping.projectA=beijing事务分组的作用：解决异地机房停电容错。
default 必须要等于 registry.conf 中的 cluster=“default”
把seata本地配置文件同步到nacos配置中心的流程：
1》把config.txt 放在 seata目录的同级目录
2》在seata目录下添加nacos-config.sh文件，内容如下：
#!/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="nacos"
fi
if [[ -z ${password} ]]; then
password="nacos"
fi
nacosAddr=$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
双击：nacos-config.sh这个文件
shell:
sh nacos-config.sh -h localhost -p 8848 -g SEATA_GROUP -t 9704bb45-3e8b-479d-b491-f0f77765e2df参数说明：
-h：host，默认值localhost
-p：port，默认值8848
-g：配置分组，默认值为 ‘SEATA_GROUP’
-t ：租户信息，对应Nacos的命名空间ID字段，默认值为空
查看nacos中的配置列表：
启动Seata Server
1》源码启动：执行server模块下io.seata.server.Server.java的main方法
2》命令启动：bin/seata-server.sh -h 127.0.0.1 -p 8091 -m db -n 1 -e test
支持的启动参数：
参数 | 全写 | 作用 | 备注 |
-h | –host | 指定在注册中心注册的IP | 不指定时获取当前的IP，外部访问部署在云环境和容器中的server建议指定 |
-p | –port | 指定server启动的端口 | 默认为8091 |
-m | –storeMode | 事务日志存储方式 | 支持file，db，redis，默认为file 注意： redis需要seata-server 1.3 版本及以上 |
-n | –serverNode | 用于指定seata-server节点ID | 如 1，2，3…，默认为1 |
-e | –seataEnv | 指定seata-server运行环境 | 如dev，test等，服务启动时会使用registry-dev.conf这样的配置 |
启动Seata Server
bin/seata-server.sh -p 8092启动成功，默认端口8091
在注册中心可以查看到seata-server注册成功
