linux(centos8):安裝分布式事務服務seata(file單機模式,seata 1.3.0/centos 8.2)

一，什么是seata?

Seata:Simpe Extensible Autonomous Transcaction Architecture，

是阿里中間件,開源的分布式事務解決方案。

前身是阿里的Fescar

 

官方站:

http://seata.io/zh-cn/

官方代碼地址:

https://github.com/seata/seata

官方文檔站:

http://seata.io/zh-cn/docs/overview/what-is-seata.html

各版本的release下載地址:

https://github.com/seata/seata/releases

 

說明：劉宏締的架構森林是一個專注架構的博客，地址：https://www.cnblogs.com/architectforest

         對應的源碼可以訪問這里獲取： https://github.com/liuhongdi/

說明：作者:劉宏締 郵箱: [e-mail]

 

二，安裝seata前准備java環境：

因為seata是基於java開發的，所以需要先在機器上准備java環境

1,下載java

從官方站下載：

https://www.oracle.com/cn/java/technologies/javase-downloads.html

下載完成后查看當前目錄:

[root@localhost java]# pwd
/usr/local/source/java
[root@localhost java]# ls
jdk-14.0.2_linux-x64_bin.tar.gz

 

2,解壓和安裝:

解壓:

[root@localhost java]# tar -zxvf jdk-14.0.2_linux-x64_bin.tar.gz

把解壓后的jdk目錄，移動到安裝目錄/usr/local/soft目錄下:

[root@localhost java]# mv jdk-14.0.2 /usr/local/soft/

 

3,配置java

編輯profile文件:

[root@localhost java]# vi /etc/profile

內容：

export JAVA_HOME=/usr/local/soft/jdk-14.0.2
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

使變量生效：

[root@localhost java]# source /etc/profile

 

4,測試java的安裝效果

[root@localhost liuhongdi]# java --version
java 14.0.2 2020-07-14
Java(TM) SE Runtime Environment (build 14.0.2+12-46)
Java HotSpot(TM) 64-Bit Server VM (build 14.0.2+12-46, mixed mode, sharing)

 

三，下載seata:

1,用wget命令下載

創建一個源文件存放目錄:/usr/local/source/seata,

在這個目錄下下載和解壓

[root@localhost seata]# wget https://github.com/seata/seata/releases/download/v1.3.0/seata-server-1.3.0.tar.gz

 

2,解壓后並移動到安裝目錄:

[root@localhost seata]# ls
seata-server-1.3.0.tar.gz
[root@localhost seata]# tar -zxvf seata-server-1.3.0.tar.gz
[root@localhost seata]# mv seata /usr/local/soft/
[root@localhost seata]# cd /usr/local/soft/seata/

 

四,配置seata

1,生成日志目錄:

[root@localhost seata]# mkdir /data/seata
[root@localhost seata]# mkdir /data/seata/logs
[root@localhost seata]# chmod 777 /data/seata/logs

 

2,進入安裝目錄下

[root@localhost seata]# cd conf/
[root@localhost conf]# vi logback.xml

修改內容：

修改LOG_HOME為我們創建的目錄

<property name="LOG_HOME" value="/data/seata/logs”/>

 

3,創建seata的gc日志目錄

[root@localhost seata]# pwd
/usr/local/soft/seata
[root@localhost seata]# mkdir logs

說明：seata默認會使用這個目錄保存java運行時的gclog

 

五,啟動並檢測是否運行中

1,啟動

[root@localhost seata]# nohup sh ./bin/seata-server.sh -p 8091 > /data/seata/logs/seata_runtime.out 2>&1 &          
[1] 2062

 

2,檢查查端口是否在監聽中:

[root@localhost bin]# telnet localhost 8091
Trying ::1...
Connected to localhost.
Escape character is '^]'.
^]
telnet> quit
Connection closed.

 

六，用systemctl管理seata 

1，創建seata啟動文件：保存到安裝目錄/bin目錄下

[root@localhost seata]# cd bin/
[root@localhost bin]# vi seata-start.sh
[root@localhost bin]# more seata-start.sh
#!/bin/bash
sh /usr/local/soft/seata/bin/seata-server.sh -p 8091
[root@localhost bin]# chmod +x seata-start.sh

 

2，創建service文件

[root@localhost bin]# vi /usr/lib/systemd/system/seata.service

內容:

[Unit]
Description=seata-server
After=syslog.target network.target
 
[Service]
Type=simple
ExecStart=/usr/local/soft/seata/bin/seata-start.sh
Restart=always
PrivateTmp=true
 
[Install]
WantedBy=multi-user.target

 

3,啟動service

[root@localhost bin]# systemctl daemon-reload
[root@localhost bin]# systemctl start seata.service   

 

4,查看是否運行中?

[root@localhost ~]# systemctl status seata.service 
● seata.service - seata-server
   Loaded: loaded (/usr/lib/systemd/system/seata.service; disabled; vendor preset: disabled)
   Active: active (running) since Sat 2020-08-15 09:59:03 CST; 2s ago
 Main PID: 1726 (seata-start.sh)
    Tasks: 29 (limit: 4642)
   Memory: 145.7M
   CGroup: /system.slice/seata.service
           ├─1726 /bin/bash /usr/local/soft/seata/bin/seata-start.sh
           └─1727 /usr/bin/java -server -Xmx2048m -Xms2048m -Xmn1024m -Xss512k -XX:SurvivorRatio=10 
...

可以看到狀態為 active (running)

 

5,用ss查看端口:

[root@localhost ~]# ss -lntp
State       Recv-Q      Send-Q            Local Address:Port             Peer Address:Port 
LISTEN      0           1024                          *:8091             *:*   users:(("java",pid=1727,fd=176))  

 

七，查看seata-server可用的參數

用--help

[root@localhost ~]# /usr/local/soft/seata/bin/seata-server.sh --help

可以看到參數：

...
Usage: sh seata-server.sh(for linux and mac) or cmd seata-server.bat(for 
      windows) [options]
  Options:
    --host, -h
      The ip to register to registry center.
    --port, -p
      The port to listen.
      Default: 8091
    --storeMode, -m
      log store mode : file, db
    --serverNode, -n
      server node id, such as 1, 2, 3.it will be generated according to the 
      snowflake by default
    --seataEnv, -e
      The name used for multi-configuration isolation.
    --help

 

八，查看linux的版本 :

[root@localhost java]$ cat /etc/redhat-release
CentOS Linux release 8.2.2004 (Core)