How to uninstall a Cluster

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After the cluster is uninstalled, all data of the cluster will be lost. Back up the required data in advance.Before uninstalling the cluster, ensure that the communication between hosts is normal and the hosts are running properly. Otherwise, the cluster cannot be uninstalled.Obtained the password of the user (user root or user omm) who performs the uninstallation.
Procedure:1.Determine whether to uninstall the cluster as user omm.
2.Use PuTTY to log in to the active management node as user root, copy the preset folder in the /opt/FusionInsight_SetupTool/preset directory where the script installation tool package is decompressed to the /opt directory on all nodes. Run the sh /opt/preset/preset.sh command on all nodes.You can use the script tool in the software package to run a command or access a file on multiple nodes in a cluster. For details, see How to Run Commands or Access Files on Multiple Nodes in a Cluster.
3.Log in to FusionInsight Manager using an administrator account.Enter the network address of FusionInsight Manager in the address box of the browserThe address format is http://WebService floating IP address of FusionInsight Manager system:8080/web.
4.Click Services.
5.Choose More Actions > Uninstall Cluster.
6.In the displayed dialog box, enter the password of the administrator user admin, and click OK.
7.Select I have read the information and understand the impact and enter the password of user root (or user omm) of the node system. Click OK to uninstall the cluster.
8.When all progresses reach 100%, click Finish. The cluster is uninstalled.

Other related questions:
How to uninstall the plug-in?
Step 1 Run the following command to go to the plug-in installation directory: # cd /etc # cd "Huawei eSight Server Management Plug-in (for Nagios)" Step 2 Run the following command to uninstall the plug-in: # python setup.py uninstall Step 3 When the following information is displayed, determine whether to retain user data based on the site requirements: Do you want to retain user data?(Y/N) If yes, enter y and pressEnter. If no, enter n and press Enter. The system begins to uninstall the plug-in. When the uninstallation is complete, the following information is displayed: setup.py=> [info] uninstall success. Done. Step 4 Check whether the main configuration file nagios.cfg is configured correctly. 1. Run the following command to return to the Nagios user: # su - nagios 2. Run the following command to check the main configuration file nagios.cfg. $ /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg NOTE /usr/local/nagios is an installation directory example. The nagios.cfg file is correct if the following information is displayed: Things look okay - No serious problems were detected during the pre-flight check 3. Run the following command to return to user root. $ exit Step 5 Run the following command to restart the Nagios service: # service nagios restart The Nagios service has restarted if the following information is displayed: Stopping nagios: done. Starting nagios: done.

How can I uninstall the SMC2.0?
For details about the SMC2.0 uninstallation method, choose Start > Control Panel > All Programs > Programs and Features > Uninstallation program and find SMC2.0 uninstallation information.

How to Uninstall Antivirus Agent Software?
1.Choose Start > All programs. Find Huawei Antivirus Agent. 2.Choose Huawei Antivirus Agent > Uninstall. On the Huawei Antivirus Agent Uninstall page that is displayed, click Yes and then click OK. 3.The Antivirus Agent Software is uninstalled SUCCEEDly.

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