User contributions for Saurabh
From Notes_Wiki
- 08:26, 8 July 2022 diff hist +1,297 N 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..." current
- 08:22, 8 July 2022 diff hist +1,343 N 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..." current
- 08:19, 8 July 2022 diff hist +294 m CentOS 7.x Rocks cluster 7.0
- 03:51, 8 July 2022 diff hist +295 m CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes current
- 01:37, 7 July 2022 diff hist +647 m CentOS 7.x Rocks cluster 7.0 Build compute server
- 05:29, 5 July 2022 diff hist +2,462 m Upgrading Cisco switch IOS using tftp server current
- 04:56, 5 July 2022 diff hist +497 m CentOS 8.x Systemd based reverse ssh tunnel service
- 04:52, 5 July 2022 diff hist +1,229 m Configuring a windows file server for user data current
- 04:45, 5 July 2022 diff hist +4,742 N 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..."
- 04:37, 5 July 2022 diff hist +90 m VMWare Horizon
- 04:21, 5 July 2022 diff hist +1,035 N 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..." current
- 04:19, 5 July 2022 diff hist +129 N Microsoft IIS Web server Created page with "Home > Windows > Microsoft IIS Web server *Configure IIS for additional file extensions and mime types" current
- 04:18, 5 July 2022 diff hist +30 m Windows
- 04:12, 5 July 2022 diff hist −1 m CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes
- 07:53, 20 June 2022 diff hist +868 N 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..." current
- 07:50, 20 June 2022 diff hist +52 m Active Directory
- 06:52, 20 June 2022 diff hist +57 m VMWare Horizon
- 06:51, 20 June 2022 diff hist +46 m VxRail
- 06:51, 20 June 2022 diff hist +3,546 N 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..." current
- 06:48, 20 June 2022 diff hist +101 m Factory reset VxRail 4.7 server current
- 06:47, 20 June 2022 diff hist +1,255 N 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..." current
- 06:44, 20 June 2022 diff hist +453 m CentOS 8.x Control Web panel Initial configuration current
- 06:36, 20 June 2022 diff hist +1,026 N 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..." current
- 06:32, 20 June 2022 diff hist +59 m Windows Server 2019
- 06:30, 20 June 2022 diff hist +535 m CentOS 8.x Configure barjatiyarklp after OS installation overwriting existing root partition current
- 06:28, 20 June 2022 diff hist +657 m Tunneling using SSH server listening on port 443
- 06:17, 20 June 2022 diff hist +225 m Tunneling using SSH server listening on port 443
- 06:16, 20 June 2022 diff hist +58 m Connecting to SSH server listening on port 443 using HTTP proxy server with HTTP CONNECT
- 06:11, 20 June 2022 diff hist +2,900 N 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..." current
- 06:06, 20 June 2022 diff hist +44 m VMWare Horizon
- 06:05, 20 June 2022 diff hist +1,566 m Configuring a windows file server for user data
- 08:26, 16 June 2022 diff hist +4,328 N 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..."
- 08:14, 16 June 2022 diff hist +70 m VMWare Horizon
- 08:12, 16 June 2022 diff hist −8 m CentOS 8.x postfix replace addresses on outgoing email current
- 08:48, 22 May 2022 diff hist +1,122 N 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..." current
- 08:43, 22 May 2022 diff hist +119 N 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" current
- 08:42, 22 May 2022 diff hist +49 m CentOS 9.x current
- 13:02, 21 May 2022 diff hist +8,592 N 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...." current
- 12:40, 21 May 2022 diff hist +7,063 N 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..." current
- 11:31, 21 May 2022 diff hist +1,209 m Build VxRail 7.0
- 11:26, 21 May 2022 diff hist +763 m Build VxRail 4.7
- 11:21, 21 May 2022 diff hist +128 CentOS 7.x Configure basic NFSv4 server for sharing folders between two machines
- 11:21, 21 May 2022 diff hist +1,193 N 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 diff hist +186 N 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" current
- 11:17, 21 May 2022 diff hist +99 N CentOS 9.x file sharing Created page with "Home > CentOS > CentOS 9.x > CentOS 9.x file sharing *CentOS 9.x NFS" current
- 11:17, 21 May 2022 diff hist +78 N CentOS 9.x Created page with "Home > CentOS > CentOS 9.x *CentOS 9.x file sharing"
- 11:16, 21 May 2022 diff hist +16 m Rocky Linux or CentOS
- 11:11, 21 May 2022 diff hist +1,480 m Upgrading firwmare on S4100 series Dell switches with OS 10 current
- 11:03, 21 May 2022 diff hist +15 m CentOS 8.x Control Web panel Installation on linode current
- 10:56, 21 May 2022 diff hist −33 m CentOS 7.x Configure Postfix to block spam
- 03:27, 20 May 2022 diff hist +375 m VMWare Horizon
- 03:27, 20 May 2022 diff hist +8,615 N 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..." current
- 02:59, 20 May 2022 diff hist +2,611 N 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..." current
- 02:49, 20 May 2022 diff hist +465 Horizon Connection server installation current
- 02:47, 20 May 2022 diff hist +3,386 N 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...."
- 02:28, 20 May 2022 diff hist +40 m ESXi boot issues current
- 02:27, 20 May 2022 diff hist +666 N 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..."
- 02:25, 20 May 2022 diff hist +22 m VMWare vSphere or ESXi
- 05:16, 19 May 2022 diff hist +753 m CentOS 8.x Control Web panel Initial configuration
- 05:08, 19 May 2022 diff hist +804 N 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..." current
- 05:06, 19 May 2022 diff hist +47 m Useful bash shell scripts
- 05:05, 19 May 2022 diff hist +125 m Trunking incoming VLANs on uplink port to all other ports
- 05:04, 19 May 2022 diff hist +112 m Get Dell OS 10 switch service tag using cli current
- 15:24, 16 May 2022 diff hist +960 N 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\..." current
- 15:21, 16 May 2022 diff hist +1,125 N 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..." current
- 15:18, 16 May 2022 diff hist +33 m VMWare VSAN
- 15:18, 16 May 2022 diff hist +57 m VMWare vSphere or ESXi
- 15:05, 16 May 2022 diff hist +184 m CentOS 8.x Control Web panel Initial configuration
- 17:59, 15 May 2022 diff hist 0 m CentOS 8.x Control Web panel
- 17:58, 15 May 2022 diff hist +2,031 N 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..." current
- 17:54, 15 May 2022 diff hist +5,648 N 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..." current
- 17:48, 15 May 2022 diff hist +3,557 N 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..."
- 17:44, 15 May 2022 diff hist +72 m CentOS 8.x Control Web panel Installation on linode
- 17:43, 15 May 2022 diff hist +1,445 N 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 diff hist +402 N 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"
- 17:39, 15 May 2022 diff hist +34 m CentOS 8.x email servers
- 17:36, 15 May 2022 diff hist −25 m CentOS 8.x web servers current
- 17:36, 15 May 2022 diff hist −15 m CentOS 8.x apache web server
- 17:36, 15 May 2022 diff hist +41 m CentOS 8.x apache troubleshooting
- 17:35, 15 May 2022 diff hist −25 m CentOS 8.x DHCP server current
- 17:35, 15 May 2022 diff hist −5 m CentOS 8.x Setup basic DHCP server current
- 17:34, 15 May 2022 diff hist −37 m CentOS 8.x Distributed Filesystems current
- 17:34, 15 May 2022 diff hist −19 m CentOS 8.x Glusterfs current
- 17:34, 15 May 2022 diff hist +193 m CentOS 8.x Glusterfs basic setup of distributed volume current
- 17:33, 15 May 2022 diff hist −21 m CentOS 8.x Moosefs 3.x current
- 17:33, 15 May 2022 diff hist +99 m CentOS 8.x Moosefs 3.x Initial setup current
- 17:32, 15 May 2022 diff hist −19 m CentOS 8.x iSCSI current
- 17:32, 15 May 2022 diff hist −209 m CentOS 8.x iSCSI target server setup current
- 17:29, 15 May 2022 diff hist −25 m CentOS 8.x ntp servers current
- 17:29, 15 May 2022 diff hist −14 m CentOS 8.x chronyc ntp client configuration current
- 17:28, 15 May 2022 diff hist −30 m CentOS 8.x database servers current
- 17:28, 15 May 2022 diff hist −10 m CentOS 8.x mariadb
- 17:28, 15 May 2022 diff hist +76 m CentOs 8.x mariadb monitoring current
- 17:28, 15 May 2022 diff hist −1 m CentOS 8.x mariadb taking backup of large production databases current
- 17:26, 15 May 2022 diff hist −36 m CentOS 8.x authentication servers current
- 17:26, 15 May 2022 diff hist −14 m CentOS 8.x 389DS current
- 17:26, 15 May 2022 diff hist +66 m CentOS 8.x Connect to 389DS with Apache Directory Studio current
- 17:26, 15 May 2022 diff hist +79 m CentOS 8.x Migrate OpenLDAP ldif to 389-DS current
- 17:25, 15 May 2022 diff hist +86 m CentOS 8.x 389DS basic installation current
- 17:25, 15 May 2022 diff hist −16 m CentOS 8.x FreeIPA current