Ubuntu HPC Create new user

Home > Ubuntu > HPC setup with openpbs and openmpi > Create new user

Once HPC setup is done properly, to create any new user (eg user3) please use below steps:

1. Create user using:

   useradd -m  -d  /export/home/user3 -s /bin/bash user3
   passwd user3

2. Create SSH key and configure them as authorized using:

   su - user3
   ssh-keygen
   cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys;  chmod 600 ~/.ssh/authorized_keys

3. Validate key based ssh within master node using

   su - user3
   ssh user3@<masternode>

   This should not ask password for the self ssh as user3 on master node

4. Update NIS database using root user on master node:

   make -C /var/yp
   systemctl restart nis

5. Reboot all compute nodes
6. Validate user details on compute node using:

   getent passwd user3

   The home folder for user3 should properly show as /export/home/user3

7. Validate key-less SSH to compute nodes from master node using:

   su - user3
   ssh user3@<compute>  #This should not ask password, Do for all compute nodes

8. (Optionally) Run test job as explained at Ubuntu HPC Execute parallel jobs using user3.

Home > Ubuntu > HPC setup with openpbs and openmpi > Create new user