Isilon: How to move the admin home directory

Introduction

There are some security implications to keeping admin home directories under /ifs. The following procedure moves it out of the cluster coherent /ifs/home/admin and makes it nodes specific in /admin.

Procedure

Verify directory space

1. Open an SSH connection on any node in the cluster and log in using the "root" account.
2. Run the following commands to verify that each node has space to fit the contents of the /ifs/home/admin directory:

   du -sh /ifs/home/admin
   isi_for_array df -h /

root@OneFS-1 ~ # du -sh /ifs/home/admin
28K    /ifs/home/admin

root@OneFS-1 ~ # isi_for_array df -h /
OneFS-3: Filesystem          Size  Used Avail Capacity Mounted on
OneFS-3: /dev/mirror/root0 1.9G 740M 1.0G 42% /
OneFS-2: Filesystem          Size  Used Avail Capacity Mounted on
OneFS-2: /dev/mirror/root0 1.9G 847M 912M 48% /
OneFS-1: Filesystem          Size  Used Avail Capacity Mounted on
OneFS-1: /dev/mirror/root0 1.9G 1.1G 641M 64% /

Note: Ensure each node has an Avail size greater than that listed from the du command. 

Create local home directories and copy contents

1. Create the new empty admin home directory:
   
   isi_for_array 'mkdir /admin'

• Duplicate the existing admin home directory:
  
  isi_for_array cp -rp /ifs/home/admin/ /admin

• Assign ownership and permissions:
  
  isi_for_array  chown admin /admin; chmod 700 /admin'

OneFS-2: directories match
OneFS-1: directories match
OneFS-3: directories match

Remove the old directory