Bright Cluster Manager Knowledge Base

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Initialize And Finalize Scripts: How can I reboot from an initialize/finalize script?
Answer: On a regular node, the initialize and finalize scripts run in the pre-provisioning, pre-init, early user space, initial root file system environment. That means that ...
Power Management: Setup up custom power scripts for ProfitBricks
Answer: Custom Power Scripts for controlling ProfitBricks Instances Prerequisites To use dynamic scaling of clusters on ProfitBricks’ IaaS platform you have to install a head node in a ...
Third Party Software: How does the {mlnx|qlgc}-ofed(2)-install.sh script work?
Answer: How does the mlnx-ofed*-install.sh/qlgc-ofed-install.sh script work? The script installs "mlnx-ofa_kernel.x86_64" and "mlnx-ofa_kernel-devel.x86_64" on the head node or in the software image. These are the actual OFED ...
Initialize And Finalize Scripts: How do I run code before the initialize script runs?
Answer: How do I run code before the initialize script runs? By installing custom code into the init script of the initrd of a software image. So, rephrasing: How ...
Initialize And Finalize Scripts: How do I use the finalize script to transfer certificates to the nodes?
Answer: How do I use the finalize script to transfer certificates to the nodes? In many cases, it might be desired to use node-specific certificates for certain ...
Configuring: How do I configure my hardware RAID controller from an initialize script?
Answer: How do I set up a hardware RAID controller from an initialize script? An initialize script is used when custom commands need to be executed before ...
Cluster Management: CMDaemon won't restart my service like it is supposed to. But I can start the
Answer: Normally CMDaemon restarts a service that fails. However, one of the possibilities is that CMD has given up due to persistent failure. In the Administrator Manual, ...
OpenStack: Can I use a custom CMDaemon authentication mechanism for OpenStack?
Answer: For Bright 7.1 you can customize the way CMDaemon obtains authentication data from OpenStack. So, instead of a built-in method you can provide your own ...
Cluster Management: How can a custom command be run in cmsh?
Answer: Custom commands can be of two kinds: external to cmsh or internal to cmsh. external to cmsh If the custom command is an executable from the main ...
Configuring: How do I add a login node?
Answer: How do I add a login node? Table of contents Why have a login node?What do we need to consider for login nodes?1. Make a login image ...
Configuring: How do I make regular nodes return an FQDN using 'hostname -f'? Or resolve the
Answer: How do I make regular nodes return an FQDN using 'hostname -f'? Or resolve the hostnames to IPs on the external network? There are two ways ...
Node Provisioning: How can I flash update all my nodes (from DOS)?
Answer: How can I flash update all my nodes (from DOS)? (For update via Linux, see http://kb.brightcomputing.com/faq/index.php?action=artikel&cat=11&id=105 ) The problem:I have to perform some maintenance on the nodes ...
Workload Management: How do I run interactive Ansys Fluent using Slurm?
Answer: You can use the following script: [cmsupport@bright60 ~] cat ./fluent-srun.sh #!/usr/bin/env bashHOSTSFILE=.hostlist-job$SLURM_JOB_IDif [ "$SLURM_PROCID" == "0" ]; then srun hostname -f > $HOSTSFILE fluent -t $SLURM_NTASKS ...
Initialize And Finalize Scripts: How do I handle network interfaces swapping names?
Answer: How do I handle network interfaces swapping names? eth0 keeps changing randomly on boot to eth1 and vice versa. There are two ways to handle this ...
Configuring: Why is the Ethernet switch port-based identification not working?
Answer: Why is the Ethernet switch port-based identification not working?IntroductionThe steps below will help you troubleshoot why port-based identification on an Ethernet switch might not be ...
Cluster Management: My cluster is showing odd errors. What should I do?
Answer: A cluster can sometimes show general weirdness, throwing up odd non-specific errors. A checklist of suggestions to go through first: 1. check the hardware. Burn tests such as ...
High Availability: Can I replicate my own MySQL database using the failover mechanism supplied by Bright?
Answer: Yes. All the MySQL databases can be replicated between the active and passive, not just CMDaemon and Slurm. (Have a look in the Admin Manual for ...
Node Provisioning: How do I set up a root FS over Lustre?
Answer: How do I set up a root FS over Lustre? This article describes how to configure a cluster so that the compute nodes mount their root ...
Configuring: How do I update behind a proxy?
Answer: How do I update Bright if it is connected to the network behind a web proxy server? If you are sitting behind a network proxy server ...
Day-to-day Administration: Can I mix Linux distributions on my cluster?
Answer: Can the Bright Cluster Manager (BCM) be used to manage a mix of Linux distributions within the same cluster?Yes. Introduction With BCM, multiple, different images can be ...
Third Party Software: How can I use the Intel VTune XE with Bright?
Answer: Introduction Intel's VTune Amplifier is a commercial application for performance analysis on 32 and 64-bit x86 based machines, and has both GUI and command-line interfaces. Basic features ...
User Management: How do I integrate Bright with AD Using SSSD 's LDAP provider and Simple BIND?
Answer: How do I integrate a Bright cluster into an Active Directory domain with SSSD 's LDAP provider? (The method in "How do I authenticate against Active ...
Cluster Management: When does a node need to be restarted?
Answer: When does a node need to be restarted? Why does a node need to be restarted? Can I ignore it? How do I clear that ...
Cluster Management: How do I know when a clone operation has completed?
Answer: We would like to know when exactly the clone of an image has completed. This is so we can automate some image update and test ...
User Management: How can I migrate system users to LDAP?
Answer: How can I migrate users and groups from /etc/passwd and /etc/group to Bright's LDAP? The following steps should be done on the head node. 1. Install the ...
Third Party Software: How can I use CUDA MPS with Bright?
Answer: Introduction CUDA MPS is a feature that allows multiple CUDA processes to share a single GPU context. A CUDA program runs in MPS mode, if the ...
OpenStack: How do I integrate Bright OpenStack with an external Ceph storage?
Answer: How do I add External Ceph to Bright OpenStack? A local Ceph can be set up on Bright clusters with the cm-ceph-setup script and used as ...
Cluster Monitoring: How can I monitor a CoolIT rack with Bright?
Answer: How can I monitor a CoolIT rack with Bright? CoolIT is a vendor of water-cooled racks that have sensors to monitor the rack. CoolIT racks can ...
Installing BCM: How do I install Bright Cluster Manager on an SGI ICE X/XA system?
Answer: Installing Bright on an SGI ICE X/XA system involves first installing the "Admin" node using a Bright Cluster Manager ISO. The ISO could be burned to a ...
Cluster Management: How do I install the JSON cmgui ?
Answer: The standalone JSON cmgui, available in Bright 6.0 and upwards, can run on any regular desktop client machine, including on a MacOS desktop. The software ...
Configuring: How do I create an InfiniBand subinterface?
Answer: How do I create an IB subinterface? Subinterfaces divide primary (parent) interfaces to provide traffic isolation. Partition assignments distinguish subinterfaces from parent interfaces. Subinterface creation and ...
General: How do I generate a build config from a running cluster?
Answer: This article describes how to generate a build config (which can be fed into the Bright head node installer) from a running cluster configuration. Prerequisites This works ...
Configuring: Can I dual-boot my nodes between Linux and Windows?
Answer: There are a number of ways to set up nodes that dual-boot between Linux and Windows. Bright Cluster Manager cannot provision Windows images to compute ...
Configuring: How do I make hostname -f return the FQDN for a dynamic IP address (on
Answer: How do I make hostname -f return the FQDN for a dynamic IP address (on the non-bootable network interface)? This comes in useful for some SGE ...
Workload Management: How do I install Condor on Bright?
Answer: How do I install HTCondor on top of a Bright Cluster? HTCondor can be installed on top of a Bright Cluster as follows: On the head node 1. ...
Development: How can I install the latest Python in Bright?
Answer: RedHat, SUSE, and similar Linux-based OS distributors provide versions of Python that lag behind the latest upstream. This is normally a good thing, since the ...
User Management: How do I authenticate against Active Directory using Centrify?
Answer: How do I authenticate against Active Directory using Centrify?' Centrify aims at making integration of Linux and Mac OS X systems as easy as possible. It ...
Initialize And Finalize Scripts: How do I write information out to a hard drive during pre-provisioning?
Answer: How do I write information out to a hard drive during pre-provisioning? With a finalize script you write to somewhere under localdrive, which is the root ...
Security: How is a spoofing attack avoided in AD with Bright?
Answer: How is a spoofing attack avoided in AD with Bright? [Everyone I speak with about joining a node to AD indicates that there is a unique ...
General: How can I configure Isilon's DNS and NFS with Bright?
Answer: How can I configure Isilon's DNS and NFS with Bright? DNS setup for use with Isilon SmartConnect [1] The DNS running on the Bright head node can ...
OpenStack: OpenStack Neutron Mellanox ML2 Driver Configuration in Bright
Answer: Abstract This article describes how to use the Mellanox Neutron ...
Node Provisioning: How do I automatically plug in new nodes and assign it an identity in Bright?
Answer: How do I automatically plug in new nodes and assign it an identity in Bright? The following technique can save labor, when you are adding a ...
Power Management: How Do I monitor APM In An HP Apollo 8000?
Answer: APM Monitoring Setup for An HP Apollo 8000 rack in Bright 7.x Static Routes: The head node can access the APMs through an intermediate host which has ...
OpenStack: How can OpenStack be deployed on a Bright 7.0 HA Cluster?
Answer: Notes on deploying OpenStack on HA ClustersWe start with a single headnode cluster: - deploy openstack - add second headnodeRequirements: Bright Cluster Manager 7.0 (OpenStack Icehouse)One ...
OpenStack: How do I deploy Bright OpenStack 7.1 (Juno) on an HA cluster?
Answer: Deploying a Bright OpenStack 7.1 cluster is explained here. The deployment is described for OpenStack running with or without Ceph storage. For Deployments withouth Ceph, ...
Workload Management: How do I configure BeeGFS on demand?
Answer: How do I configure BeeGFS on demand? BeeOND ("BeeGFS OnDemand", pronounced like the word "beyond") was developed to enable easy creation of one or multiple BeeGFS ...
High Availability: Why are my filesystems no longer exported from my head node after setting up HA?
Answer: Why are my filesystems no longer exported from my head node after setting up HA? Short answer: It is done by Bright to protect the filesystems ...
General: Why do I get error messages after patching BASH for the Shellshock vulnerabilty?
Answer: Why do I get error messages after patching BASH for the Shellshock vulnerabilty? Symptom: ash: BASH_FUNC_module(): line 0: syntax error near unexpected token ´)' bash: BASH_FUNC_module(): line 0: ...
Security: How do I configure Bright to manage a Self Encrypted Drive (SED)?
Answer: This article explains Bright Cluster Manager can be configured to manage a regular node with a Self Encrypted Drive (SED), so that the regular node ...
High Availability: How do I set up high-availability NFS with Bright?
Answer: How do I set up high-availability NFS with Bright? Setting up an HA NFS storage This article describes how to setup a high availability NFS storage service ...

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