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• 08:38, 8 July 2022 Saurabh talk contribs created page PBS setup master node (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > PBS setup master node To setup PBS master node use: # Download pbs packages #:<pre> #:: wget http://wpc.23a7.iotacdn.net/8023A7/origin2/rl/PBS-Open/pbspro_19.1.2.centos_7.zip #:: unzip pbspro_19.1.2.centos_7.zip #:</pre> # Install PBS on master server #:<pre> #:: cd pbspro_19.1.2.centos_7 #:: yum localinstall -y ./pbspro-server-19.1.2-0.x86_64.rpm #:</pre> # Edit pbs conf file ('<t...")
• 08:26, 8 July 2022 Saurabh talk contribs created page PBS pre-requisites (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > PBS pre-requisites Following pre-requisites are required for PBS to work: # Nodes should resolve each other using short-names and FQDN such rocks2, rocks2.local to their private IP. This is taken care of by rocks cluster #: Might require fixing /etc/hosts on compute nodes to point to master FQDN via private IP instead of master public IP # There should be password-less SSH betwee...")
• 08:22, 8 July 2022 Saurabh talk contribs created page PBS Theory (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > PBS Theory The related documentation is on installing PBS Pro packages in which there are three types of nodes: ; pbspro-server : This should be installed on one node (or two if you employ failover) in your cluster where the server and scheduler will run. Most admins prefer not to run jobs on this node, but it is certainly possible. This RPM also installs everything you would get...")
• 04:45, 5 July 2022 Saurabh talk contribs created page Setting up VDI machines with virtual Nvidia graphics card (Created page with "Home > VMWare platform > VMWare Horizon > Setting up VDI machines with virtual Nvidia graphics card In case of VDI the physical server can have graphics card such as Nvidia A40 and then we can associate smaller virtual slices of this Graphics card with VMs to give small amount of graphics memory + CPU to the VM. This can help with 3D applications performance in the VDI environment. =Downloading Nvidia software from site= To download Nvidia so...")
• 04:21, 5 July 2022 Saurabh talk contribs created page Configure IIS for additional file extensions and mime types (Created page with "Home > Windows > Microsoft IIS Web server > Configure IIS for additional file extensions and mime types If we try to put new types of files such as .pem, .cer which are not recognized by IIS by default in webroot (C:\Inetput\wwwroot) or its subfolders then they do not get downloaded when requested via the web URL. To enable serving such files by IIS Web server we need to associate their extension with appropriate mime type using: # For this g...")
• 04:19, 5 July 2022 Saurabh talk contribs created page Microsoft IIS Web server (Created page with "Home > Windows > Microsoft IIS Web server *Configure IIS for additional file extensions and mime types")
• 07:53, 20 June 2022 Saurabh talk contribs created page Disable password complexity at AD policy level (Created page with "Home > Windows > Active Directory > [[Disable password complexity at AD policy level] To disable AD password complexity use: # Go to either "Group policy editor" at AD level or "Local policy editor" at machine level or both # Go to Computer Computer Configuration -> Windows Settings -> Security Settings ->Password Policy # Change the complexity and password aging as per requirement # At AD level from administrator cmd run #:<pre> #:: gpupdate /fo...")
• 06:51, 20 June 2022 Saurabh talk contribs created page VxRail RASR SD card reset using RASR ISO (Created page with "Home > VMWare platform > VxRail > VxRail RASR SD card reset using RASR ISO If reset of node via SD Card as explained at Factory reset VxRail 4.7 server is not working then we can try reimaging the SD card itself using: =RASR Reset using RASR ISO= # In Web browser, open iDRAC web UI and launch virtual console. # In the Virtual Console window, click Virtual Media tab and select Connect Virtual Media. # Select Virtual Media again, and then s...")
• 06:47, 20 June 2022 Saurabh talk contribs created page Delete horizon protected images or VMs or templates (Created page with "Home > VMWare platform > VMWare Horizon > Delete horizon protected images or VMs or templates To delete Horizon protected VMs use: # Login into existing connection server as domain user #: This can also be a different / new connection server deployed afresh and connected to same vCenter where old horizon protected VMs / templates or images need to be deleted # Open an administrative cmd # Go to folder using #:<pre> #:: cd C:\Program Files\VMw...")
• 06:36, 20 June 2022 Saurabh talk contribs created page Windows Server 2019 activation via proxy or via phone (Created page with "Home > Windows > Windows Server 2019 > Windows Server 2019 activation via proxy or via phone We can activate any modern Windows including Windows Server 2019 via proxy using: # Through server manager -> Local server: ## Disable IE enchanced mode configuration ## Configure correct timezone as per requirement # Configure proxy in Internet explorer such that you can open https://www.google.co.in. If proxy requires authentication enter username an...")
• 06:11, 20 June 2022 Saurabh talk contribs created page Configure MSSQL events database server (Created page with "Home > VMWare platform > VMWare Horizon > Configure MSSQL events database server =MS SQL server installation= To setup MS SQL server use: # Run SQLEXPR installer # Choose "New SQL Server stand-alone installation or add features to an existing installation" # In popup window, accept the license, click next # Choose "Use Microsoft update to check for updates(recommended)", click next # In feature selection page, leave default settings, click next...")
• 08:26, 16 June 2022 Saurabh talk contribs created page Configuring a windows file server for user data (Created page with "Home > VMWare platform > VMWare Horizon > Configuring a windows file server for user data In case of Horizon setup, once users log into their VDI machines, ideally they should not keep any data locally. Hence it is possible to map some shared storage to them via DEM or manually. In either case a Windows based file server is required. =Building a Windows file sharing server in Windows 2019= To build Windows 2019 based file sharing server re...")
• 08:48, 22 May 2022 Saurabh talk contribs created page CentOS 9.x tar (Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x Command line tools and utilities > CentOS 9.x tar =Resume a tar.gz command that was killed= Support a file is being created using: <pre> tar czf backup.tar.gz /mnt/backup </pre> But the process is killed in between. Now instead of re-compressing all the files which are part of backup.tar.gz already, it is possible to create another .tar.gz file with remaining data. To do that use: <pre> cd ~ tar ztf...")
• 08:43, 22 May 2022 Saurabh talk contribs created page CentOS 9.x Command line tools and utilities (Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x Command line tools and utilities *CentOS 9.x tar")
• 13:02, 21 May 2022 Saurabh talk contribs created page Creating Golden image for Windows OS (Created page with "Home > VMWare platform > VMWare Horizon > Creating Golden image for Windows OS To create Golden image for Windows OS: =VM Creation= Create VM with following hardware configuration: # Select required no. of CPUs # Select desired memory. #: Expand the Memory section. #: Select Reserve all guest memory (All locked). # Choose appropriately sized hard disk, Choose Thin disk type #: Note that very large hard-disk will take time due to sdelete etc....")
• 12:40, 21 May 2022 Saurabh talk contribs created page Creating Windows 2019 or Windows 10 Desktop Pool (Created page with "Home > VMWare platform > VMWare Horizon > Creating Windows 2019 or Windows 10 Desktop Pool =Theory= There are three types of pools: ;Manual pool : We can create VMs and install Horizon agent. Then we can add them to Manual pool. This can be used to add physical Desktops / Servers etc. also to the horizon for connection server / UAG based remote access ;RDS pool : Once we create RDSH farm, we can create RDS pool as described in detail at Cre...")
• 11:21, 21 May 2022 Saurabh talk contribs created page CentOS 9.x Configure basic NFSv4 server for sharing folders between two machines (Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x file sharing > CentOS 9.x NFS > CentOS 9.x Configure basic NFSv4 server for sharing folders between two machines There is older article on this at CentOS 7.x Configure basic NFSv4 server for sharing folders between two machines To configure CentOS 9.x based NFS server use: # Disable SELinux by editing '<tt>/etc/sysconfig/selinux</tt>' and setting: #:<pre> #:: SELINUX=disabled #:</pre> #: Al...")
• 11:18, 21 May 2022 Saurabh talk contribs created page CentOS 9.x NFS (Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x file sharing > CentOS 9.x NFS *CentOS 9.x Configure basic NFSv4 server for sharing folders between two machines")
• 11:17, 21 May 2022 Saurabh talk contribs created page CentOS 9.x file sharing (Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x file sharing *CentOS 9.x NFS")
• 11:17, 21 May 2022 Saurabh talk contribs created page CentOS 9.x (Created page with "Home > CentOS > CentOS 9.x *CentOS 9.x file sharing")
• 03:27, 20 May 2022 Saurabh talk contribs created page Creating RDSH Automatic Instant Clone Farms (Created page with "Home > VMWare platform > VMWare Horizon > Creating RDSH Automatic Instant Clone Farms =Theory= In case of Desktop OS pools with dedicated VM per user we can create the pool directly using Golden images as explained at Creating Windows 2019 or Windows 10 Desktop Pool. However in case of RDSH shared desktop pools using Windows server OS where a single VM can be used by multiple users concurrently, we need to first create a farm of RDS hosts...")
• 02:59, 20 May 2022 Saurabh talk contribs created page AD Configuration required for various Windows RDSH or Desktop pools (Created page with "Home > VMWare platform > VMWare Horizon > AD Configuration required for various Windows RDSH or Desktop pools For users to be able to remotely login into the VMs created as part of Horizon, we need to create following OUs, groups and policies: # Open Active Directory users and computers ## Create OU for VDI ## Create new sub=OU for VMs ## Create group for Desktop pool users under main VDI OU. If you are planning to create five different VDI po...")
• 02:47, 20 May 2022 Saurabh talk contribs created page Horizon Connection server installation (Created page with "Home > VMWare platform > VMWare Horizon > Horizon Connection server installation =Pre-requisites= Before setting up a Horizon connection server we should have: # Working VMWare ESXi and vCenter setup with shared storage and adequate spare hardware resources (RAM, Disk, CPU, etc.) # Working AD server along with domain administration access to AD server #: Domain AD credentials should be available as a service account without any password expiry....")
• 02:27, 20 May 2022 Saurabh talk contribs created page ESXi boot issues (Created page with "Home > VMWare platform > VMWare vSphere or ESXi > ESXi boot issues It is possible for ESXi to not boot properly with errors such as: <pre> SINIT Authenticated Code Module detected an intel Trusted Execution Technology(TXT) problem at boot. </pre> These are caused due to TPM module. Clearing TPM module or resetting (Restarting) iDRAC does not seems to help. In such cases we need to do a cold reboot (Full poweroff and then after waiting sometim...")
• 05:08, 19 May 2022 Saurabh talk contribs created page Restart rsync on failure via shell script (Created page with "Home > Shell scripting > Useful bash shell scripts > Restart rsync on failure via shell script It is possible to create shell script to restart rsync, if it exits with failure status (non-zero return value) using: <pre> #!/bin/bash while [ 1 ] do <rsync-command> if [ "$?" = "0" ] ; then echo "rsync completed normally" exit else echo "Rsync failed. Retrying..." sleep 180 fi done </pre> Here replac...")
• 15:24, 16 May 2022 Saurabh talk contribs created page Test connectivity when using multiple tcp/ip stacks (Created page with "Home > VMWare platform > VMWare vSphere or ESXi > Test connectivity when using multiple tcp/ip stacks It is possible for ESXi host to use multiple TCP/IP stacks. In that case to validate connectivity between two ESXi hosts use: # Get list of network stacks using: #:<pre> #:: esxcli network ip netstack list #:</pre> # Understand which vmkernel port is using which TCP/IP stack using: #:<pre> #:: esxcli network ip interface list | grep -i 'name\...")
• 15:21, 16 May 2022 Saurabh talk contribs created page Troubleshooting vSAN issues (Created page with "Home > VMWare platform > vMWare VSAN > Troubleshooting vSAN issues =Host cannot communicate with one or more other nodes in the vSAN enabled cluster= There can be possibility of error such as: <pre> Host cannot communicate with one or more other nodes in the vSAN enabled cluster </pre> esp. after some kind of network disconnection OR incorrect shutdown / boot procedure. To solve that: # ping from one host to all other hosts and va...")
• 17:58, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Control Web panel Whitelist or Blacklist IP or email or domain in postfix (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x email servers > CentOS 8.x Control Web panel > Whitelist or Blacklist IP or email or domain in postfix Normally logwatch emails might be sent to root@localhost and via /etc/aliases and combination of CentOS 8.x postfix send email through relay or smarthost with smtp authentication might get delivered to intend...")
• 17:54, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Control Web panel Migrate web and email domain from existing server (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x email servers > CentOS 8.x Control Web panel > Migrate web and email domain from existing server Control Web Panel (CWP) is suited for email and web virtual hosting. Creating a greenfield domain should be straight forward. However, if you want to migrate existing site and emails to CWP based server use following steps...")
• 17:48, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Control Web panel Initial configuration (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x email servers > CentOS 8.x Control Web panel > Initial configuration Once installed initial configuration of CWP can be done as follows: # After Web login on https://<server-fqdn-or-ip>:2031/, click "Set Root Email" and update "Admin Email" #: Ideally also select "Forward server system emails" checkbox # If you are planning to host emails th...")
• 17:43, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Control Web panel Installation on linode (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x email servers > CentOS 8.x Control Web panel > Installation on linode To use Control Web panel (CWP) on CentOS8-Stream linode use: # Create a linode with CentOS8-Stream OS with at least 2 GB RAM. #: Ideally setup public key based access #: Configure a root password also. This is required later to login into CWP. # SSH to linode as root user an...")
• 17:41, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Control Web panel (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x email servers > CentOS 8.x Control Web panel *CentOS 8.x Control Web panel Installation on linode *CentOS 8.x Control Web panel initial configuratoin *CentOS 8.x Control Web panel Migrate web and email domain from existing server *CentOS 8.x Control Web panel Whitelist or Blacklist IP or email or domain in postfix")
• 08:57, 15 May 2022 Saurabh talk contribs created page CentOS 8.x mediawiki include multi-line source code (Created page with "Home > CentOS > CentOS 8.x > Web based tools > mediawiki > CentOS 8.x mediawiki include multi-line source code It is often required to have source included as part of article within numbered text such as done at CentOS 8.x Systemd based reverse ssh tunnel service For that we need to use something like: <pre> # First # Second <source line lang="CSharp">Some Multi Line C Sharp Code </so...")
• 08:52, 15 May 2022 Saurabh talk contribs created page CentOS 8.x Systemd based reverse ssh tunnel service (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x Security tools > CentOS 8.x Systemd based reverse ssh tunnel service In case anydesk/teamviewer are proving unreliable there is option to connect to an internal server behind NAT using reverse ssh. For this we create service on internal server which does SSH to a public server via public key and creates reverse ssh tunnel from public server to itself. Anyone who has SSH access to public server, ca...")
• 17:26, 13 May 2022 Saurabh talk contribs created page ESXi losses all vmkernel or ip configuration (Created page with "Home > VMWare platform > VMWare vSphere or ESXi > ESXi losses all vmkernel or ip configuration While changing vMkernel IPs on very slow VPN connecting using vCenter web interface, had to refresh a browser a few times. After that ESXi seems to have lost all its configuration. Rebooting it also did not help. It was connected to vCenter, showing as part of distributed switch but all vMkernel adapters were not visible. To solve this restored ES...")
• 14:40, 13 May 2022 Saurabh talk contribs created page Get Dell OS 10 switch service tag using cli (Created page with "Home > Switch configuration notes > Get Dell OS 10 switch service tag using cli To get OS 10 switch service tag use: <pre> show inventory </pre> Refer: * https://www.dell.com/support/kbdoc/en-us/000187055/dell-emc-networking-how-to-find-the-service-tag-in-a-s6100-on-switch Home > Switch configuration notes > Get Dell OS 10 switch service tag using cli")
• 14:14, 13 May 2022 Saurabh talk contribs created page Breaking 40G QSFP+ to 4x10G SFP+ in Dell OS 10 switches (Created page with "Home > Switch configuration notes > Breaking 40G QSFP+ to 4x10G SFP+ in Dell OS 10 switches In OS 10 switches to convert a 40/100G port to 4x10G SFP+ when connected using 40G to 4x10G DAC cable use: <pre> config t interface breakout <interface> map 10g-4x </pre> where <interface> should be replaced with number such as 1/1/15 Refer: * https://dl.dell.com/topicspdf/smrtfab-os10-5-2_ug_en-us_en-us.pdf '''Note: ''' There is also mention...")
• 13:59, 13 May 2022 Saurabh talk contribs created page CentOS 8.x create or extend lvm partition with striping (Created page with "Home > CentOS > CentOS 8.x > System Administration > Filesystem management > CentOS 8.x create or extend lvm partition with striping =Create striped lvm partition= In case of physical disks (not in case of central storage where LUNs are coming from same pool), we can increase performance of a partition by doing striping (RAID 0) over various independent disks. To config...")
• 09:58, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes =Update master= To update use: # Edit files in '<tt>/etc/yum.repos.d/</tt>' and set enable=1. At least enabled repositories in: #* CentOS-Base.repo #* epel.repo #* rpmforge.repo # '''Ensure that''' in /etc/yum.conf, caching is enabled: #:<pre> #:: keepcache=1 #:</pre> # Then update the master node fully using: #:<pr...")
• 08:33, 11 May 2022 Saurabh talk contribs moved page CentOS 7.x Rocks cluster 7.0 Sun Grid Engine sge role to CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role (Corrected name)
• 08:02, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Sun Grid Engine sge role (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Sun Grid Engine sge role =Manager privielges= For a user to submit job with positive priority they must be manager as per SGE. To configure user as manager use: <pre> qconf -am <username> </pre> Refer: * https://docs.oracle.com/cd/E19957-01/820-0698/6ncdvjclp/index.html =Opening qmon= There is graphical qmon tool that comes with SGE. That does not...")
• 07:14, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Compute node network configuration (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Compute node network configuration =Add public network to compute node= We can see defined networks using: <pre> rocks list network </pre> Then we can see list of existing host interfaces using: <pre> rocks list host interface <hostname> </pre> We can see additional ports on host using: <pre> ssh <hostname> "ip addr show" | grep mtu </pre> Then we ca...")
• 07:11, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Reinstall OS on compute node (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Reinstall OS on compute node To reinstall OS on compute node use: <pre> rocks list host boot rocks set host boot <hostname> action=install ssh <hostname> "shutdown -r now" </pre> This assumes that the boot order on compute node is properly set to boot from network. '''By default there is /state/partition1 partition created on compute nodes. This part...")
• 07:04, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Customize compute node during installation (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Customize compute node during installation To customer compute node immediately after the OS installer completes use following steps: # Create extend-compute.xml file using: #:<pre> #:: cd /export/rocks/install/site-profiles/7.0/nodes/ #:: cp -i skeleton.xml extend-compute.xml #Dont overwrite existing file, if any #:</pre> # Edit '<tt>extend-compute.x...")
• 06:42, 11 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Install rpm package in compute nodes (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Install rpm package in compute nodes =Install rpm package directly via yum/rpm= We can copy the rpm file to compute node and install it via rpm/yum. If the package is likely to be there in the yum repository of rocks then it call also be installed via yum directly. For example: <pre> ssh <compute-node-hostname> yum -y install iotop </pre> =Install...")
• 16:15, 10 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Troubleshooting (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Troubleshooting =Unable to use rocks command or sun-grid-engine= If while using rocks you face errors such as: <pre> [root@rocks ~]# rocks sync host network gpu error: commlib error: got select error (Connection refused) unable to send message to qmaster using port 536 on host "rocks.local": got send error [root@rocks ~]# qhost error: commlib error: got...")
• 12:46, 10 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Build compute server (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Build compute server The compute node is setup via Pxeboot. It should be connected only to private network and then booted via network. # Before doing network boot on compute node, on master server, run below command: #: <pre> #:: insert-ethers #: </pre> # On the ncurses based popup '''Choose Compute''', it would display: 'insert-ethers is waiting f...")
• 12:42, 10 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Build master server (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Build master server =Minimum requirement= * Should have atleast two network interfaces ** eth0 - First interface connected to private network ** eth1 - Second interface connected to public network * Hostname must set while installing. This FQDN should resolve to master node public IP via DNS. *: '''The hostname cannot be frontend.<domain-name>. Any ot...")
• 12:31, 10 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Build rolls server (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Build rolls server We can build a rolls server to setup master node using a CentOS 7 machine. To setup rolls on a CentOS 7 machine use: # Disable firewalld #:<pre> #:: systemctl stop firewalld #:: systemctl disable firewalld #:</pre> # Disable selinux by editing '<tt>/etc/selinux/config</tt>' as: #:<pre> #:: SELINUX=disabled #:</pre> #: Also run #::...")
• 12:20, 10 May 2022 Saurabh talk contribs created page CentOS 7.x Rocks cluster 7.0 Introduction (Created page with "Home > CentOS > CentOS 7.x > CentOS 7.x Rocks cluster 7.0 > CentOS 7.x Rocks cluster 7.0 Introduction =Types of nodes= Rocks cluster ( http://www.rocksclusters.org/ ) allows us to build a cluster of machines so that they can be used for HPC purposes. In this case we have at least three types of nodes: ; Rolls-server : This is setup initially to setup a master server. After master server is setup this may not be required ; Master-server :...")

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