GAUSSDB T卸载示例(单机及分布式集群)

Gaussdb T的安装部署是非常友好的，卸载也是非常友好的，单机版本使用uninstall.py进行卸载，分布式集群使用gs_uninstall进行卸载。下面演示单机/分布式集群卸载过程。

1.单机卸载

1.1卸载命令

Checking uninstall parameters...
uninstall.py is a utility to uninstall zengine server.

Usage:
  python uninstall.py --help
  python uninstall.py -U user [-F] [-D DATADIR]  [-g withoutroot]

Common options:
  -F        clean the database storage area
  -D        location of the database cluster storage area,it will be available after -F
  -g        run uninstall script without root privilege, but you must have permission of uninstallation folder
  -P        if sysdba login is disabled by configuration, specify this option the end
  --help    show this help, then exit

-F:清理数据存储目录
-D 软件安装目录
-g 非root用户卸载
-p 在sysdba会话登陆的情况下使用

1.2 卸载示例

卸载日志

Checking uninstall parameters...
Checking username in parameters...
Getting install path...
Checking uninstall.py position...
Getting user environment variables file path...
Checking whether install path in the user environment variables...
Getting data directory...
Begin check data dir...
Stopping zenith instance...
Successfully Stopped zenith instance.
Cleaning data path...
Cleaning user environment variables...
Cleaning install path...
Zengine was successfully removed from your computer, for more message please see /home/omm/zengineuninstall.log.
[root@alldb bin]# 

2.分布式集群卸载

2.1卸载命令

gs_uninstall is a utility to uninstall a cluster.

Usage:
  gs_uninstall -? | --help
  gs_uninstall -V | --version

  gs_uninstall [--delete-data] [-L] [-l LOGFILE] [-X CONFIGFILE]

General options:
      --delete-data                 Clean up instance data files.
  -L                                Only uninstall local nodes.
  -l                                Path of log file.
  -?, --help                        Show help information for this utility, and exit the command line mode.
  -V, --version                     Show version information.
  -X                                Path of the XML configuration file.
        
[omm@gaussdb1 script]$

参数说明：
–delete-data 清理数据
-L 卸载本地节点
-l 移除日志
-X 集群部署的XML配置文件

2.2卸载示例

gs_uninstall --delete-data -X /opt/software/clusterconfig.xml

卸载日志

[omm@gaussdb1 software]$ gs_uninstall --delete-data -X /opt/software/clusterconfig_1_4.xml
The data will be deleted and cannot be recovered. Are you sure you want to uninstall the cluster(yes/no)?yes
Check preinstall on every node.
Successfully checked preinstall on every node.
Stop cluster.
Check logfile path.
Clean crontab.
Clean crontab successfully.
Kill process for components.
Kill process for components successfully.
Uninstall components
Uninstall components successfully.
Modifying user's environmental variable.
Successfully modified user's environmental variable.
Clean tmp files and logs.
Successfully clean cluster's tmp and logs.
Successful uninstallation
[omm@gaussdb1 software]$ 

2.3扩展卸载场景命令

卸载本地节点：

gs_uninstall --delete-data -L -X /opt/software/gaussdb/clusterconfig.xml

示此，Gaussdb T卸载方式演示完毕，祝各位玩的开心。