helm部署Seata服务

helm部署Seata服务

拉取Seata服务代码

git clone https://github.com/seata/seata.git
cd seata/
// 切到自己需要的版本
git checkout v1.4.2

打chart包并推送到自己chart仓库

cd script/server/helm/
helm package ./seata-server --version 1.4.2
helm cm-push seata-server-1.4.2.tgz --password=密码 --username=用户名 chart仓库地址

部署Seata服务

// 添加seata所在chart仓库
helm repo add 仓库名称 --username 用户名 --password 密码 chart库地址

// 在需要部署seata服务的集群节点上拉取chart包
helm pull 仓库名称/seata-server --version 1.4.2

// 安装seata服务
helm install -f values.yaml seata-server ./seata-server

values.yaml文件内容

replicaCount: 1

namespace: default

image:
  repository: seataio/seata-server
  tag: 1.4.2
  pullPolicy: IfNotPresent

service:
  type: NodePort
  port: 30091

env:
  seataPort: "8091"
  storeMode: "file"
  seataIp: "127.0.0.1"
  seataConfigName: "file:/root/seata-config/registry"

volume:
  - name: seata-config
    mountPath: /root/seata-config
    hostPath: /root/work/seata/seata-config/file

• 将部署节点上/root/work/seata/seata-config/file目录挂载到/root/seata-config

• env.seataConfigName指定seata服务启动时加载配置文件位置,registry即registry.conf文件

• 官方提供的chart包不能直接通过环境参数指定注册中心、连接数据库等信息，只能通过挂载文件的方式配置。如果想要直接通过values文件中指定这些
  信息只能自己基于官方源码自己制作镜像、chart包

• 通过挂载主机文件的方式有个问题就是必须在每个节点上都需要有这个配置文件，因为如果seata服务的pod调度到没有配置文件的节点将会拿不到文件无法启动

/root/work/seata/seata-config/file下需要的配置文件

registry.conf

配置注册中心及配置中心的信息

registry {
  # file 、nacos 、eureka、redis、zk、consul、etcd3、sofa
  type = "eureka"

  nacos {
    application = "seata-server"
    serverAddr = "127.0.0.1:8848"
    group = "SEATA_GROUP"
    namespace = ""
    cluster = "default"
    username = ""
    password = ""
  }
  eureka {
    # 配置eureka注册中心信息
    serviceUrl = "http://localhost:8000/eureka"
    application = "seata-server"
    weight = "1"
  }
  redis {
    serverAddr = "localhost:6379"
    db = 0
    password = ""
    cluster = "default"
    timeout = 0
  }
  zk {
    cluster = "default"
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
  }
  consul {
    cluster = "default"
    serverAddr = "127.0.0.1:8500"
    aclToken = ""
  }
  etcd3 {
    cluster = "default"
    serverAddr = "http://localhost:2379"
  }
  sofa {
    serverAddr = "127.0.0.1:9603"
    application = "default"
    region = "DEFAULT_ZONE"
    datacenter = "DefaultDataCenter"
    cluster = "default"
    group = "SEATA_GROUP"
    addressWaitTime = "3000"
  }
  file {
    name = "file.conf"
  }
}

config {
  # file、nacos 、apollo、zk、consul、etcd3
  type = "file"

  nacos {
    serverAddr = "127.0.0.1:8848"
    namespace = ""
    group = "SEATA_GROUP"
    username = ""
    password = ""
    dataId = "seataServer.properties"
  }
  consul {
    serverAddr = "127.0.0.1:8500"
    aclToken = ""
  }
  apollo {
    appId = "seata-server"
    ## apolloConfigService will cover apolloMeta
    apolloMeta = "http://192.168.1.204:8801"
    apolloConfigService = "http://192.168.1.204:8080"
    namespace = "application"
    apolloAccesskeySecret = ""
    cluster = "seata"
  }
  zk {
    serverAddr = "127.0.0.1:2181"
    sessionTimeout = 6000
    connectTimeout = 2000
    username = ""
    password = ""
    nodePath = "/seata/seata.properties"
  }
  etcd3 {
    serverAddr = "http://localhost:2379"
  }
  file {
    name = "file.conf"
  }
}

• 如果使用Spring Cloud微服务架构，需要将Seata服务注册到注册中心，以便客户端能通过注册中心访问Seata服务

file.conf

配置数据库等信息,如下为配置mysql数据库样例

## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  mode = "db"
  ## rsa decryption public key
  publicKey = ""
  ## file store property
  file {
    ## store location dir
    dir = "sessionStore"
    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    maxBranchSessionSize = 16384
    # globe session size , if exceeded throws exceptions
    maxGlobalSessionSize = 512
    # file buffer size , if exceeded allocate new buffer
    fileWriteBufferCacheSize = 16384
    # when recover batch read size
    sessionReloadReadSize = 100
    # async, sync
    flushDiskMode = async
  }

  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "mysql"
    driverClassName = "com.mysql.jdbc.Driver"
    ## if using mysql to store the data, recommend add rewriteBatchedStatements=true in jdbc connection param
    url = "jdbc:mysql://localhost:3306/seata?rewriteBatchedStatements=true&useUnicode=true&characterEncoding=utf-8&useSSL=false"
    user = "root"
    password = "root"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }

  ## redis store property
  redis {
    ## redis mode: single、sentinel
    mode = "single"
    ## single mode property
    single {
      host = "127.0.0.1"
      port = "6379"
    }
    ## sentinel mode property
    sentinel {
      masterName = ""
      ## such as "10.28.235.65:26379,10.28.235.65:26380,10.28.235.65:26381"
      sentinelHosts = ""
    }
    password = ""
    database = "0"
    minConn = 1
    maxConn = 10
    maxTotal = 100
    queryLimit = 100
  }
}

如下为配置oracle数据库样例

## transaction log store, only used in seata-server
store {
  ## store mode: file、db、redis
  mode = "redis"
  ## rsa decryption public key
  publicKey = ""
  ## file store property
  file {
    ## store location dir
    dir = "sessionStore"
    # branch session size , if exceeded first try compress lockkey, still exceeded throws exceptions
    maxBranchSessionSize = 16384
    # globe session size , if exceeded throws exceptions
    maxGlobalSessionSize = 512
    # file buffer size , if exceeded allocate new buffer
    fileWriteBufferCacheSize = 16384
    # when recover batch read size
    sessionReloadReadSize = 100
    # async, sync
    flushDiskMode = async
  }

  ## database store property
  db {
    ## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.
    datasource = "druid"
    ## mysql/oracle/postgresql/h2/oceanbase etc.
    dbType = "oracle"
    driverClassName = "oracle.jdbc.driver.OracleDriver"
    ## if using mysql to store the data, recommend add rewriteBatchedStatements=true in jdbc connection param
    url = "jdbc:oracle:thin:@localhost:1521:FEIDA"
    user = "root"
    password = "root"
    minConn = 5
    maxConn = 100
    globalTable = "global_table"
    branchTable = "branch_table"
    lockTable = "lock_table"
    queryLimit = 100
    maxWait = 5000
  }

  ## redis store property
  redis {
    ## redis mode: single、sentinel
    mode = "single"
    ## single mode property
    single {
      host = "localhost"
      port = "6379"
    }
    ## sentinel mode property
    sentinel {
      masterName = ""
      ## such as "10.28.235.65:26379,10.28.235.65:26380,10.28.235.65:26381"
      sentinelHosts = ""
    }
    password = ""
    database = "0"
    minConn = 1
    maxConn = 10
    maxTotal = 100
    queryLimit = 100
  }
}

配置数据库的原因是Seata服务需要一些表来记录分布式事务的信息，以便进行分布式事务控制。即可以单独创建数据库指定，也可以使用已有数据库，建议
单独创建数据库