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| Subject: |
[Users] NERSC HPSS upgrade - 2nd announcement |
| Author: |
Eric Hjort <ELHjort_at_lbl.gov> |
| Date: |
2008-08-29 15:04:23 |
| Greetings NERSC HPSS user,
This serves as the 2nd announcement for an upcoming system outage for
the Regent HPSS system. This system is also known as "hpss" when
connecting to HPSS and is intended primarily for system backup data.
If you connect to "archive" or you simply execute HSI without
specifying a system name, you automatically connect to Archive HPSS and
this announcement does not apply to you.
If you connect to HPSS by specifying "hpss" then you use the HPSS
Regent system and details of actions you will need to take upon
completion of the upgrade are included below.
Regent HPSS will begin the upgrade by making the system unavailable
beginning at 8:00am on Tuesday, 9 September 2008. The system is
expected to be returned to users by 8:00am on Thursday, 11 September 2008.
Some important details:
HPSS authentication and accounts are now integrated with the NERSC
Information Management (NIM) server. You no longer access
auth.nersc.gov or utilize DCE usernames or passwords. DCE passwords
and FTP encrypted password strings will no longer work after 11 Sep
08. Although you must generate a new password for use with Regent
HPSS, and may place the new password in your .netrc file, you should be
careful not to disturb the Archive HPSS password or contents in your
.netrc file. The old password and authentication process (visiting
auth.nersc.gov) will still be in effect for the Archive HPSS system
until it is upgraded at a later date.
1. Downloading new HPSS clients:
If you use HSI or HTAR from a non-NERSC computational system, you must
download a new client from https://www.nersc.gov/projects/download/hpss/
Failure to download a new client will result in a failed authentication
request. Using a new client to access the Archive HPSS system will
result in a hang during initial HSI/HTAR startup. You must use a v3.4+
HSI or HTAR client to communicate with Regent HPSS and a v2.13 client
to communicate with Archive HPSS.
The NERSC computational systems are updated by the Mass Storage Group
and will already have the new HSI, HTAR and pftp clients upon
completion of the upgrade.
2. New authentication method, generating a new HPSS password:
Every user must generate a new password to access HPSS Regent after the
upgrade. To do so:
(a.) Use a web browser to access http://nim.nersc.gov
(b.) Login using your NIM password (same as other NERSC production
systems)
(c.) Select new option under Action called Generate HPSS Token
(d.) For access from any NERSC system, use the encrypted string
provided at the top of the frame. For access from a system outside of
NERSC, enter the IP address of the system and generate a new encrypted
string.
(e.) Use your NIM username and this new password to login to HPSS with
HSI, HTAR, pftp or FTP. You may place the string in a .netrc file in
your home directory for HSI, HTAR, pftp, and some FTP clients to use
for auto-authenticated access to HPSS. For details, see
http://www.nersc.gov/nusers/systems/hpss/accounts_passwords.php
If you add the new HPSS token to your .netrc file, ensure you replace
any existing stanzas with "hpss" or "hpss.nersc.gov" but leave the
archive HPSS stanzas alone.
3. Note the new location of home directories.
Previous to the upgrade, a user's home directory could be located
anywhere in the HPSS namespace. After the upgrade, home directories
will now be in /home/<first initial of moniker>/<moniker>. For
example, user 'franky' will be in /home/f/franky after logging into
Regent HPSS.
We have moved your home directory to this location and placed a
symbolic link from your old homedir to this location. If you have
scripts that hardcode or reference the old path, please update them
accordingly.
4. Change in startup parameters for HSI and HTAR:
When using HSI or HTAR, users could previously execute:
$ hsi hpss
And they would be connected to the Regent HPSS system. With the new
version of HSI and HTAR, users must specify the HPSS system they want
to connect to with the -s option:
$ hsi -s hpss
If a user tries accessing HPSS with the old syntax, HSI will interpret
"hpss" as an argument to the command and will fail to connect them to
the Regent HPSS system.
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