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The following procedure describes how to add one or more nodes in the HP XC system: Log in as superuser on the head node. Note the number of nodes currently on your system. You can determine that number with the following command: Prepare the new node hardware as described in the HP XC System Software Hardware Preparation Guide. Cable the new node (or nodes) into the system. See the HP XC System Software documentation for your system for more information. Start the automatic discovery of the new node or nodes into your system and add them to the configuration and management database (cmdb). # cd /opt/hptc/config/sbin
# ./discover --addnode options |
See discover(8) to determine which options are appropriate for your system. Verify that any new nodes have been added to your system by running the following command and compare it with the result from step 2: If the added node is of a type different from the other nodes and if its disk size does not match other disks in the HP XC system, modify the disk size parameters in the /opt/hptc/systemimager/etc/model.conf file on the head node, where model refers to the model type. See the Release Notes for any additional information. Run the cluster_config utility to configure the nodes and set the imaging environment: The cluster_config utility prompts you for key information, as shown here: The following menu is displayed: [L]ist Nodes, [M]odify Nodes, [H]elp, [P]roceed, [Q]uit: |
Modify the default role assignments depending upon your system requirements. When you are finished with your modifications, enter P to proceed: The cluster configuration is ready to be applied. Do it? [y/n] y |
When prompted, enter y to regenerate ssh keys: Root ssh keys for the cluster already exist
(Warning: you will not be able to ssh/pdsh to
other nodes until you reimage them)
Would you like to regenerate them? ([n]/y) y |
When prompted, specify the same NTP server that you are using for SFS; the SFS and HP XC clocks must be synchronized. When prompted, supply the network type for your system: Enter the network type of your system.
Valid choices are QMS32 or QMS64: [QMS64]: |
When prompted, enable Web access to the Nagios monitoring application and create a password for the nagiosadmin user. This password does not have to match any other password on your system. Running C50nagios
Would you like to enable web based monitoring? ([y]/n) y
Enter the password for the 'nagiosadmin' web user:
New password: your_nagios_password
Re-type new password: your_nagios_password |
The cluster_config utility prompts you that it recognizes an existing slurm.conf file and asks if you want to reconfigure it. Answer n if the slurm.conf file has any changes that you made manually. Otherwise, answer y. The cluster_config utility adds the node to the slurm.conf file in either case. The golden image is created automatically, and all other system services are configured and started.
Boot the system and propagate the golden image to the new node or nodes with the startsys command: # startsys --image_and_boot node_name |
The node_name indicates the newly added node or nodes. Run the spconfig utility. # /opt/hptc/sbin/spconfig |
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