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• 12:42, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Storage pool modification (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Storage pool modification #Update the next storage pool #:<pre> #::> UPDATE STGPOOL DEVQADBPOOL NEXT=DEVQALTOPOOL #:</pre> #If any storage pool data needs update #:<pre> #::> UPDATE STGPOOL DEVQADBPOOL MIGD=1 MIGC=no #:</pre> #If pool data migrate to...")
• 12:36, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Storage pool creation for Primary Secondary Databases (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Storage pool creation for Primary Secondary Databases #On the backup server, open backup console #:<pre> #::dsmadmc #:</pre> #LTO pool for Databases #:<pre> #::> DEFINE STGPOOL HANADBPOOL LTOCLASS pooltype=PRIMARY descrip...")
• 12:32, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Configure Tape and Define the class (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Configure Tape and Define the class #Tape installation files are #::lin_tape-3.0.59-1.src.rpm #::lin_taped-3.0.59-rhel8.ppc64le.rpm #Rebuild the src rpm #:<pre> #::rpmbuild --rebuild lin_tape-3.0.59-1.src.rpm #:</pre> #Install the rpm files...")
• 12:20, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Commands description (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Commands description #To find the device class #:<pre> #::> q dev #:</pre> #For checking the disk / tape libraries #:<pre> #::> q library #:</pre> #For checking the tape volumes #:<pre> #::> q libvol #:</pre> #For checking paths of tape library #:<pre> #:...")
• 09:32, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Backup Agent installation in client (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Backup Agent installation in client == Register the client in the Backup Management server == #On the backup server, open backup console #:<pre> #::dsmadmc #:</pre> #Register the client in the Backup Management server #:<pre> #::> REGIST...")
• 09:24, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Schedule the Backups (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Schedule the Backups #On the backup server, open backup console #:<pre> #:: dsmadmc #:</pre> #Schedule Daily backup #:<pre> #::> DEFINE SCHEDULE <domain> <clientname_DAILY_BK> TYPE=CLIENT ACTION=ARCHIVE OBJECTS='"/<mount-point1>/" "/<mount-point2>/" /<mou...")
• 09:08, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Define storage pool for files folders (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Define storage pool for files folders #On the backup server, open backup console #:<pre> #::dsmadmc #:</pre> #Storage pool for Daily backups #:<pre> #::> DEFINE STGPOOL FSDAILYPOOL DRIVEFILECLASS pooltype=PRIMARY description="Storage pool...")
• 08:56, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Define Storage pool, Domain and Policyset (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > Spectrum Protect Define Storage pool, Domain and Policyset Define storage pool, domain, policyset and activate #On the backup server, open backup console #:<pre> #::dsmadmc #:</pre> #Define storage pool #:<pre> #::> DEFINE STGPOOL <poolname> <devicecl...")
• 08:54, 2 May 2023 Saurabh talk contribs moved page RHEL 8.x Spectrum Protect Configuration to RHEL 8.x Spectrum Protect Define Device class for drive
• 08:19, 2 May 2023 Saurabh talk contribs created page RHEL 8.x Spectrum Protect Configuration (Created page with "Home > RHEL > RHEL 8.x > Backup tools > Spectrum Protect Backup > [[RHEL 8.x Spectrum Protect Configuration|Spectrum Protect Configuration] == Define device class for drive == This document assumes mount points are available to the OS. #Login to backup server via SSH #Change permissions for drive mount points #:<pre> #::chown spinst1:spsrvrs /spdata1 #::chown spinst1:spsrvrs /spdata2 #:...")
• 06:54, 2 May 2023 Saurabh talk contribs moved page Spectrum Protect Theory to RHEL 8.x Spectrum Protect Theory
• 04:44, 1 May 2023 Saurabh talk contribs moved page Spectrum Protect Backup to RHEL 8.x Spectrum Protect Backup (Adding OS prefix)
• 13:12, 27 April 2023 Saurabh talk contribs created page Spectrum Protect backup agent installation in Backup Server (Created page with "Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools > Spectrum Protect Backup > Spectrum Protect backup agent installation in Backup Server #Copy the Spectrum protect backup agent file to /root (or other appropriate) directory in Backup server #Login to Backup server via SSH #Extract the installation file #:<pre> #:: mkdir /root/agent-temp #:: cd /root/agent-temp #:: tar xf ../8.1.14.0-TIV-TSMBAC-LinuxX86.tar #:</pre> #Install the agent #:<p...")
• 11:20, 27 April 2023 Saurabh talk contribs created page Spectrum Protect Server Installation (Created page with "Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools > Spectrum Protect Backup > Spectrum Protect Theory > Spectrum Protect Server Installation == Minimum Requirements == # RHEL8 OS (CentOS not supported) #: Ensure GUI (X Windows System) is available. # Java JRE should be install #:<pre> #:: yum install java #:</pre> #Disable SELINUX and Firewall #Set proper hostname. This cannot be changed later. Ensure the same resolves to LAN IP in...")
• 10:30, 27 April 2023 Saurabh talk contribs created page Spectrum Protect Theory (Created page with "Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools > Spectrum Protect Backup > Spectrum Protect Theory ; Device class: The type of storage device that can use the volumes that are defined in a sequential-access or random-access storage pool. Each device class of removable media type is associated with a single library. ; DISK device class: In a DISK device type of storage pool, data is stored in random access disk blocks. You can use cachi...")
• 07:33, 27 April 2023 Saurabh talk contribs created page Rocky 8.x nslookup (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > nslookup nslookup can be used to do DNS query of different types A, AAAA, MX, PTR (Reverse) etc. to default / specific DNS server =-debug option= Similar to Trace option in dig we can use '<tt>-debug</tt>' while running nslookup query to get entir...")
• 07:25, 25 April 2023 Saurabh talk contribs created page Spectrum Protect Backup (Created page with "Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools > Spectrum Protect Backup Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools > Spectrum Protect Backup")
• 06:19, 25 April 2023 Saurabh talk contribs created page RHEL 8.x Backup tools (Created page with "Home > RHEL > RHEL 8.x > RHEL 8.x Backup tools *RHEL 8.x Spectrum Protect Backup")
• 06:15, 25 April 2023 Saurabh talk contribs created page RHEL 8.x (Created page with "Home > RHEL > RHEL 8.x *RHEL 8.x Backup tools Home > RHEL > RHEL 8.x")
• 05:30, 18 April 2023 Saurabh talk contribs created page Datastore corruption issue resolution (Created page with "Home > VMWare platform > VMWare vSphere or ESXi > Datastore corruption issue resolution '''The below is not applicable for vSAN. Use this only for normal VMFS datastores'''. It is possible to have datastore corruption especially when underlying storage becomes inaccessible to ESXi host temporarily while there are VMs running from given datastore. When such incidents happen we can see some log lines related to datastore corruption in '<tt>/va...")
• 08:56, 12 April 2023 Saurabh talk contribs created page Rocky 8.x Email servers (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers *Rocky 8.x Email Servers iRedmail Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers")
• 08:56, 12 April 2023 Saurabh talk contribs created page Rocky 8.x Email Servers iRedmail (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > iRedmail *Rocky 8.x Email Servers iRedmail Setup vmail user mail forwarding via SQL Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > iRedmail")
• 08:56, 12 April 2023 Saurabh talk contribs created page Rocky 8.x Email Servers iRedmail Setup vmail user mail forwarding via SQL (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Email servers > iRedmail > Setup vmail user mail forwarding via SQL Similar to various email systems covered at CentOS 8.x email servers there is iRedMail system. In case of iRedMail unless we use professional version, we may not get option to set user fo...")
• 08:44, 12 April 2023 Saurabh talk contribs created page Disconnect or logoff from remote network share without reboot (Created page with "Home > Windows > Windows Desktop Tools or Utilities > Disconnect or logoff from remote network share without reboot Often if we access a Windows Share by typing its path in "Run" or Explorer, we get prompted for username/password (if share is password protected). This authentication seems to get cached till next reboot. If we want to remove a particular saved credential (eg if we have used our username / password on a co-worker machine to qui...")
• 08:20, 12 April 2023 Saurabh talk contribs created page Looking at email queues in Exchange (Created page with "Home > Windows > Microsoft Exchange Server > Looking at email queues in Exchange One of the important health check or troubleshooting tool for email systems is ability to look at various email queues. In case of exchange we can look at email queues via: # Open application "Exchange toolbox" # From Exchange toolbox open "Queue Viewer" tool Refer: * https://learn.microsoft.com/en-us/exchange/mail-flow/queues/queue-viewer?view=exchserver-2019...")
• 08:17, 12 April 2023 Saurabh talk contribs created page Event log error - The specified channel could not be found. Check channel configuration (15007) (Created page with "Home > Windows > Microsoft Exchange Server > Event log error - The specified channel could not be found. Check channel configuration (15007) It is possible then on Exchange Server event log export does not works and throws error: <pre> The specified channel could not be found. Check channel configuration (15007) </pre> especially for "Microsoft Exchange with Database Availability Group Events" To solve the issue use following steps: # Note do...")
• 08:17, 12 April 2023 Saurabh talk contribs created page Microsoft Exchange Server (Created page with "Home > Windows > Microsoft Exchange Server *Event log error - The specified channel could not be found. Check channel configuration (15007) Home > Windows > Microsoft Exchange Server")
• 08:03, 12 April 2023 Saurabh talk contribs created page Rocky 8.x Gnome keyboard shortcuts (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > Desktop tools or applications > Gnome keyboard shortcuts ; Switching display options : If we want to switch between mirrored screen to display only going to first monitor to display going only to second monitor etc. we can use "Super + P" or "Windows + P". Refer https://askubuntu.com/questions/1056683/how-can-i-switch...")
• 10:30, 28 February 2023 Saurabh talk contribs created page Ubuntu HPC Execute parallel jobs (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Execute parallel jobs #Login as user1 # Create '<tt>~/load.sh</tt>' file with the below information <source type="shell"> #! /bin/bash #PBS -N stressjob #PBS -q testq1 #PBS -V #PBS -l nodes=3 module load mpi/mpi-4.1.1 mpirun -host node1,node2,node3 -n 3 /usr/bin/stress --cpu 2 --vm 5 --vm-bytes 1G --timeout 60s </sour...")
• 10:20, 28 February 2023 Saurabh talk contribs created page Ubuntu HPC Configure PBS job scheduler (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Configure PBS job scheduler #Login to master node via root. Add nodes to PBS. #:<pre> #:: qmgr #Further on Qmgr: prompt use below #:: #:: create node <node1> #:: create node <node2> #:</pre> #: This should be done for all compute nodes #Check PBS information. All three nodes should be visible #:<pre> #:: pbsno...")
• 10:16, 28 February 2023 Saurabh talk contribs created page Ubuntu HPC Setup PBS execution on compute nodes (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Setup PBS execution on compute nodes To setup PBS execution on all compute nodes #Install pbs execution Debian package on all compute nodes using: #:<pre> #:: cd /export/apps/temp/openpbs_20.0.1.ubuntu_1804/ #:: dpkg -i openpbs-execution_20.0.1-1_amd64.deb #:</pre> #Configure master hostname in '<tt>/etc...")
• 09:13, 27 February 2023 Saurabh talk contribs created page Ubuntu HPC Setup PBS master on master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Setup PBS master on master node Home > Ubuntu > HPC setup with openpbs and openmpi > Setup PBS master on master node")
• 05:01, 27 February 2023 Saurabh talk contribs created page Ubuntu HPC Install and Configure Modules (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Install and Configure Modules #Create directory for modules path in master node share path #:<pre> #:: mkdir -p /export/modules/ #:</pre> #Configure mpi module file in master node ##Create directory for mpi ##:<pre> ##:: mkdir -p /export/modules/mpi ##:: cd /export/modules/mpi ##:</pre> ## Create mpi-4.1.1 modu...")
• 04:35, 27 February 2023 Saurabh talk contribs created page Ubuntu HPC Install Openmpi from master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Install Openmpi from master node We can install OpenMPI using source code by using: #Create temporary directory for compilation of sources. Download openmpi tar ball and extract sources in temporary compilation folder. #:<pre> #:: mkdir -p /export/apps/temp #:: cd /export/apps/temp #:: wget https://www.open...")
• 04:46, 25 February 2023 Saurabh talk contribs created page Rocky 8.x Finding DHCP offer and options without changing actual interface settings (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > System Administration > Finding DHCP offer and options without changing actual interface settings It is possible to make DHCP request on an interface without changing any settings. This way we can find out what IP and other options such as DNS, lease-time etc. DHCP server provi...")
• 05:47, 23 February 2023 Saurabh talk contribs created page Ubuntu HPC NIS client setup on compute nodes (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NIS client setup on compute nodes #Install NIS packages #:<pre> #:: apt -y install nis nscd #:</pre> #: During installation mention correct NIS domain as setup on master node. #Add below line in '<tt>/etc/yp.conf</tt>' file #:<pre> #:: domain <private-domain> server master #:</pre> #Add nis based re...")
• 05:26, 23 February 2023 Saurabh talk contribs created page Ubuntu HPC NIS server setup on master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NIS server setup on master node #Install NIS packages and give nis domain name #:<pre> #:: apt -y install nis nscd #:</pre> #: During installation enter private domain name for NIS #Configure this server as NIS master server by editing '<tt>/etc/default/nis</tt>' and updating below two parameter values: #:<pr...")
• 04:32, 23 February 2023 Saurabh talk contribs created page Ubuntu HPC NTP client setup on compute nodes (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NTP client setup on compute nodes To configure client nodes to take their time update from master use: #Install ntp package #:<pre> #:: apt install -y ntp ntpdate #:</pre> #Edit '<tt>/etc/ntp.conf</tt>' file and '''keep only master server''' as follows: #:<pre> #:: server master prefer iburst #:</pre> # Se...")
• 04:26, 23 February 2023 Saurabh talk contribs created page Ubuntu HPC NTP server setup on master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NTP server setup on master node #Install ntp package #:<pre> #:: apt install -y ntp ntpdate #:</pre> #Edit '<tt>/etc/ntp.conf</tt>' file and append time.google.com server as follows: #:<pre> #:: server time.google.com #:</pre> # Set correct time on current system using: #:<pre> #:: ntpdate -b time.google.com...")
• 03:38, 23 February 2023 Saurabh talk contribs created page Ubuntu 20.04 Execute command at system boot using crontab (Created page with "Home > Ubuntu > Server or Desktop administration > Ubuntu 20.04 Execute command at system boot using crontab In case of Ubuntu 20.04 if we need to execute any command after system boot (the way used to happen via /etc/rc.d/rc.local long back), we can do the same via cron using: # Type below to open cron editing for current user (eg root) #:<pre> #:: crontab -e #:</pre> # In the cron file enter command to...")
• 09:19, 17 February 2023 Saurabh talk contribs created page Ubuntu HPC NFS client on compute nodes (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NFS client on compute nodes #Install NFS client packages on compute node #:<pre> #:: apt install -y nfs-common #:</pre> #Create mount directory #:<pre> #:: mkdir /export #:</pre> #Mount master node /export directory in compute node via '<tt>/etc/fstab</tt>' using: #:<pre> #:: <masternodename>:/export /export...")
• 08:59, 17 February 2023 Saurabh talk contribs created page Ubuntu HPC DNS setup on compute node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > DNS setup on compute node To configure correct DNS settings on compute node use: # First test DNS resolution via master using: #:<pre> #:: nslookup node<n>.<private-zone> <master-private-ip> #:</pre> # Then configure appropriate DNS and search domain using: #:<pre> #:: resolvectl domain <private-interface> <privat...")
• 08:53, 17 February 2023 Saurabh talk contribs created page Ubuntu HPC DNS setup on master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > DNS setup on master node The nodes in HPC cluster should resolve each other via both short name and FQDN. To help with host resolution centrally, we can setup DNS on master using: # Install bind9 package using: #:<pre> #:: apt -y install bind9 #:</pre> # Edit '<tt>/etc/bind/named.conf.options</tt>' to include:<sour...")
• 08:08, 17 February 2023 Saurabh talk contribs created page Ubuntu HPC master and compute node network setup (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Master and compute node network setup After initial template is built using Ubuntu HPC Common setup of all HPC nodes, we need to differentiate between master and compute nodes from network perspective. # '''On compute nodes''' disable firewall using: #:<pre> #:: systemctl stop ufw #:: systemctl dis...")
• 07:51, 17 February 2023 Saurabh talk contribs moved page Ubuntu NFS server setup on master node to Ubuntu HPC NFS server setup on master node (Better naming)
• 07:48, 17 February 2023 Saurabh talk contribs created page Ubuntu NFS server setup on master node (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > NFS server setup on master node Create ext4 lvm partition with required space to be shared with clients. Mount created lvm partition on /export via UUID using /etc/fstab # Create home folder under /export #:<pre> #:: mkdir -p /export/home #:</pre> #Install NFS packages #:<pre> #:: apt install -y nfs-kernel-server...")
• 05:54, 15 February 2023 Saurabh talk contribs created page Ubuntu HPC Common setup of all HPC nodes (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Common setup of all HPC nodes Plan is to create an Ubuntu 20.04 template using below steps. Then we can clone the template to master / execution nodes and configure those nodes individually separately. For common node (template) setup use: # Install Ubuntu 20.04 Desktop with most default values. Non-root user...")
• 05:45, 15 February 2023 Saurabh talk contribs created page Ubuntu HPC setup with openpbs and openmpi (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi *Ubuntu HPC Common setup of all HPC nodes Home > Ubuntu > HPC setup with openpbs and openmpi")
• 05:32, 15 February 2023 Saurabh talk contribs created page Ubuntu Server or Desktop administration (Created page with "Home > Ubuntu > Server or Desktop administration *Package management in Ubuntu *Installing android sdk in Ubuntu *Installing Ubuntu on LVM partition *Detecting RAID partitions using Ubuntu Live CD or USB *Configuring Samba service in Ubuntu *Configuring Ubuntu machine as LDAP client *Troubleshooting Ubuntu specific issues *Installing Java on Ubuntu 12.04 x86_64 Desktop *Add U...")
• 05:32, 15 February 2023 Saurabh talk contribs created page Ubuntu Hadoop cluster setup (Created page with "Home > Ubuntu > Hadoop cluster setup *Installing Hadoop 2.2.0 on single Ubuntu 12.04 x86_64 Desktop *Installing Hadoop 2.2.0 cluster on Ubuntu 12.04 x86_64 Desktops Home > Ubuntu > Hadoop cluster setup")

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