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(Created page with "This documentation will help in setting up an Ubuntu machine as an AFS client. Means the Ubuntu machine will be able to access the NJIT's AFS directory (/afs/cad/). ; Install...")
 
 
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This documentation will help in setting up an Ubuntu machine as an AFS client. Means the Ubuntu machine will be able to access the NJIT's AFS directory (/afs/cad/).
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This documentation will show you how to access the NJIT's AFS file system (/afs/cad.njit.edu/) from your Ubuntu machine ('''Ubuntu 18.x LTS'''). You will have to do some installations on your Ubuntu machine to get access to AFS directories. Follow the instructions provided in the rest of the document.
  
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; Installing OpenAFS packages
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; 1. Installing OpenAFS packages
 
----
 
----
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sudo apt-get install openafs-krb5 openafs-client
 
  
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Information Required:
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* Open the '''Terminal''' application on your machine and run the following command to install the AFS client and Kerberos packages.
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* Default Cell: cad.njit.edu
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* AFS Cache: Don't change (keep it default)
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; Installing Kerberos Client package
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sudo apt-get install openafs-krb5 openafs-client
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----
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sudo apt-get install krb5-user
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Information Required:
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[[File:Ubuntu AFS 1.png | 800px]]
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* Realm: NJIT.EDU (In capital letters)
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* Servers: kay00.njit.edu:88 kay01.njit.edu:88 kay02.njit.edu:88
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* Admin Server: kay00.njit.edu:749
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;Edit /etc/krb5.conf
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* Now, you will be prompted to provide the AFS Cell Name and AFS Cache.
 +
 
 +
[[File:Ubuntu AFS 2.png | 800px]]
 +
 
 +
[[File:Ubuntu AFS 3.png | 800px]]
 +
 
 +
* Provide the following information in the dialog boxes and hit '''ok''':
 +
** AFS Cell: cad.njit.edu
 +
** AFS Cache: Leave this default
 +
 
 +
* Once the command has been completed, you will see the message '''DKMS: install completed'''
 +
 
 +
[[File:Ubuntu AFS 4.png | 800px]]
 +
 
 +
 
 +
; 2. Installing Kerberos Client package
 
----
 
----
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* Below [libdefaults], enter the following:
 
  
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:: dns_lookup_realm = false
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* After installing the OpenAFS packages, you will have to install the Kerberos Client package. Run the following command in a '''Terminal'''.
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:: dns_lookup_kdc = false
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* Below [realms], enter the following within the NJIT.EDU curly brackets
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sudo apt-get install krb5-user
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:: default_domain = njit.edu
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; Edit /etc/openafs/CellServDB
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[[File:Ubuntu AFS 5.png | 800px]]
 +
 
 +
* Now, you will be prompted to provide the Kerberos Realm, Servers and Admin Server.
 +
 
 +
[[File:Ubuntu AFS 6.png | 800px]]
 +
 
 +
[[File:Ubuntu AFS 7.png | 800px]]
 +
 
 +
[[File:Ubuntu AFS 8.png | 800px]]
 +
 
 +
* Provide the following information in the dialog boxes and hit '''ok''':
 +
** Realm: NJIT.EDU (In capital letters)
 +
** Servers: kay00.njit.edu:88 kay01.njit.edu:88 kay02.njit.edu:88
 +
** Admin Server: kay00.njit.edu:749
 +
 
 +
; 3. Downloading and Installing the configuration files.
 +
 
 +
Run the following, it will download and place the krb5.conf and CellServDB files onto your machine.
 +
 
 +
curl -s https://web.njit.edu/info/kerberos.servers/install_support_files | /bin/bash
 +
 
 +
 
 +
; 4. Edit /etc/krb5.conf
 
----
 
----
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Delete all the content of file /etc/openafs/CellServDB and add the following:
 
  
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    >cad.njit.edu    #Cell name
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Change the '''ticket_lifetime''' parameter value to '''24h''' under [libdefaults] and [appdefaults]
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    128.235.209.210  #ucsafsdb00.coresys.njit.edu
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    128.235.209.211  #ucsafsdb01.coresys.njit.edu
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    128.235.209.243  #ucsafsdb02.coresys.njit.edu
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    128.235.209.244  #ucsafsdb03.coresys.njit.edu
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 +
[libdefaults]
 +
  ticket_lifetime = 24h
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 +
[appdefaults]
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  pam = {
 +
  ticket_lifetime = 24h
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  }
  
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; Starting the AFS Client and accessing the afs home directory
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; 5. Starting the AFS Client and accessing the AFS home directory
 
----
 
----
  
 
* Reboot the machine. The OpenAFS client should auto start upon reboot.
 
* Reboot the machine. The OpenAFS client should auto start upon reboot.
  
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* Get the Kerberos ticket using kinit, and your AFS token using aklog
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* Verify that AFS Client started on boot up.
 +
 
 +
df -h /afs
 +
 
 +
The output of this command should be similar to the following:
 +
 
 +
[[File:Ubuntu AFS 10.png | 800px]]
 +
 
 +
ps -ef | grep afsd
 +
 
 +
The output of this command should be similar to the following:
 +
 
 +
[[File:Ubuntu AFS 11.png | 800px]]
 +
 
 +
* Get your Kerberos ticket using kinit, and your AFS token using aklog
 +
 
 +
kinit ''<Your NJIT UCID>'' && aklog
 +
 
 +
* Use the following command to check if your AFS token is generated or not.
 +
 
 +
tokens
 +
 
 +
The output of this command should be similar to the following:
 +
 
 +
[[File:Ubuntu AFS 9.png | 800px]]
 +
 
 +
'''Note:''' Your token will expire in 24 hours. You can renew it by using the following command.
  
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    kinit UCID && aklog
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kinit ''<Your NJIT UCID>'' && aklog
  
 
* You should now be able to access your AFS home directory.
 
* You should now be able to access your AFS home directory.
  
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    cd /afs/cad/u/<first_letter_of_ucid>/<second_letter_of_ucid>/<your_ucid>/
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cd /afs/cad/u/<first_letter_of_ucid>/<second_letter_of_ucid>/<your_ucid>/
 +
Example: If your NJIT UCID is abc123 then
 +
cd /afs/cad/u/a/b/abc123/

Latest revision as of 16:08, 29 August 2022

This documentation will show you how to access the NJIT's AFS file system (/afs/cad.njit.edu/) from your Ubuntu machine (Ubuntu 18.x LTS). You will have to do some installations on your Ubuntu machine to get access to AFS directories. Follow the instructions provided in the rest of the document.

1. Installing OpenAFS packages
  • Open the Terminal application on your machine and run the following command to install the AFS client and Kerberos packages.
sudo apt-get install openafs-krb5 openafs-client

Ubuntu AFS 1.png

  • Now, you will be prompted to provide the AFS Cell Name and AFS Cache.

Ubuntu AFS 2.png

Ubuntu AFS 3.png

  • Provide the following information in the dialog boxes and hit ok:
    • AFS Cell: cad.njit.edu
    • AFS Cache: Leave this default
  • Once the command has been completed, you will see the message DKMS: install completed

Ubuntu AFS 4.png


2. Installing Kerberos Client package
  • After installing the OpenAFS packages, you will have to install the Kerberos Client package. Run the following command in a Terminal.
sudo apt-get install krb5-user

Ubuntu AFS 5.png

  • Now, you will be prompted to provide the Kerberos Realm, Servers and Admin Server.

Ubuntu AFS 6.png

Ubuntu AFS 7.png

Ubuntu AFS 8.png

  • Provide the following information in the dialog boxes and hit ok:
    • Realm: NJIT.EDU (In capital letters)
    • Servers: kay00.njit.edu:88 kay01.njit.edu:88 kay02.njit.edu:88
    • Admin Server: kay00.njit.edu:749
3. Downloading and Installing the configuration files.

Run the following, it will download and place the krb5.conf and CellServDB files onto your machine. 

curl -s https://web.njit.edu/info/kerberos.servers/install_support_files | /bin/bash


4. Edit /etc/krb5.conf

Change the ticket_lifetime parameter value to 24h under [libdefaults] and [appdefaults] 

[libdefaults]
 ticket_lifetime = 24h

[appdefaults]
 pam = {
  ticket_lifetime = 24h
 }
5. Starting the AFS Client and accessing the AFS home directory
  • Reboot the machine. The OpenAFS client should auto start upon reboot.
  • Verify that AFS Client started on boot up.
df -h /afs

The output of this command should be similar to the following:

Ubuntu AFS 10.png 

ps -ef | grep afsd

The output of this command should be similar to the following:

Ubuntu AFS 11.png

  • Get your Kerberos ticket using kinit, and your AFS token using aklog
kinit <Your NJIT UCID> && aklog
  • Use the following command to check if your AFS token is generated or not.
tokens

The output of this command should be similar to the following:

Ubuntu AFS 9.png

Note: Your token will expire in 24 hours. You can renew it by using the following command. 

kinit <Your NJIT UCID> && aklog
  • You should now be able to access your AFS home directory.
cd /afs/cad/u/<first_letter_of_ucid>/<second_letter_of_ucid>/<your_ucid>/

Example: If your NJIT UCID is abc123 then 

cd /afs/cad/u/a/b/abc123/
Retrieved from "https://wiki.linux.njit.edu/index.php?title=Installing_an_OpenAFS_Client_on_Ubuntu&oldid=1536"