Uninstalling HAF

The haf_uninstaller script is provided to uninstall HAF. The haf_uninstaller script calls the haf-tool CLI interface.

• Host node

  A host node is deployed with the service as a database. Therefore, no independent uninstallation script is provided. To uninstall HAF on a host node, run the following commands:

  1. Scripts are used to overwrite key files and password files to prevent information leakage.

     #Securely delete key files and password files.
     file_list=("/home/omm/haf-install/haf-host/omnidata/service.prvk" "/home/omm/haf-install/haf-host/omnidata/service.ksfa" "/home/omm/haf-install/haf-host/omnidata/service.ksfb" "/home/omm/haf-install/haf-host/omnidata/service.pw")
     for file in ${file_list[*]}; do
         if [ -f "$file" ]; then
             file_length=$(stat -c %s ${file})
             file_k_length=$(expr ${file_length} / 1024 + 1)
             if [ ${file_k_length} -gt 5000 ];then
                 echo "${file} content size too big to handle"
                 ${file_k_length}=-1    
             fi
             dd if=/dev/zero of="${file}" bs=1k count="${file_k_length}" &> /dev/null
             tr '\0' '\377' < /dev/zero | dd of="${file}" bs=1k count="${file_k_length}" &> /dev/null
             dd if=/dev/random of="${file}" bs=1k count="${file_k_length}" &> /dev/null
         fi
     done

  2. Uninstall HAF.

     chmod u+w -R /home/omm/haf-install/haf-host/

     rm -rf /home/omm/haf-install/haf-host/

• Offload node

  cd /home/omm/haf-install/haf-target/tools/

  ./haf_uninstaller

haf-tool provides the following uninstall interface:

• Host node: not supported.
• Offload node:

  haf-tool uninstall

1. Select Command Execution and click Add a Task.
2. Edit the task content and click Save.

   The following uses uninstalling HAF on the offload node as an example.

   Parameter	Description
   Task Name	Uninstalling HAF
   Run Directory	/home/omm/haf-install/haf-target/tools
   Run Command	./haf_uninstaller