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(newest | oldest) View (newer 20 | older 20) (20 | 50 | 100 | 250 | 500)- 07:57, 15 June 2023 Saurabh talk contribs created page Rocky 9.x Upgrade Rocky 8.x to Rocky 9.x (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > Upgrade Rocky 8.x to Rocky 9.x To upgrade from Rocky 8 to Rocky 9 use: # Ensure sufficient free space in / before proceeding # Go to URL https://download.rockylinux.org/pub/rocky/9/BaseOS/x86_64/os/Packages/r/ # Note package names for rocky-release, rocky-repos and rocky-gpg-keys. Eg at time of t...")
- 07:55, 15 June 2023 Saurabh talk contribs created page Rocky 9.x Upgrade from CentOS Stream to Rocky (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > Upgrade from CentOS Stream to Rocky The below steps would work both on CentOS Stream 8 and CentOS Stream 9, to convert them to Rocky 8.x or Rocky 9.x appropriately. # Ensure sufficient free space in / before proceeding # Update to latest packages in CentOS Stream using: #:<pre> #:: dnf updat...")
- 07:22, 15 June 2023 Saurabh talk contribs created page Rocky 9.x Information tools (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > Information tools *Rocky 9.x atop '''There is older information on other tools at Information tools''' Home > Rocky Linux or CentOS > Rocky Linux 9.x > Information tools")
- 07:22, 15 June 2023 Saurabh talk contribs created page Rocky 9.x atop (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > Information tools > atop =About atop= Atop is a more comprehensive monitoring tool. It looks at CPU, RAM, hdd, etc. all parameters while monitoring. This can be useful if combination of various parameters need to be monitored using same tool. To start atop use: <pre> atop </pre> =Using atop for system activity recording similar to sar= Atop can...")
- 07:11, 15 June 2023 Saurabh talk contribs created page Rocky 9.x Syslog servers (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > Syslog servers *Rocky 9.x rsyslog server Home > Rocky Linux or CentOS > Rocky Linux 9.x > Syslog servers")
- 07:11, 15 June 2023 Saurabh talk contribs created page Rocky 9.x rsyslog server (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > Syslog servers > rsyslog server *Rocky 9.x Setup rsyslog server for accepting remote device logs '''There are older articles on rsyslog at:''' Rsyslog configuration Home > Rocky Linux or CentOS > Rocky Linux 9.x > Syslog servers > rsyslog server")
- 07:11, 15 June 2023 Saurabh talk contribs created page Rocky 9.x Setup rsyslog server for accepting remote device logs (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > Syslog servers > rsyslog server > Setup rsyslog server for accepting remote device logs To setup a new rsyslog server on Rocky 9.x use: # Install rsyslog package via: #:<pre> #:: dnf -y install rsyslog #:</pre> # Disable SELinux (setenforce 0, edit /etc/sysconfig/selinux) # Di...")
- 06:58, 15 June 2023 Saurabh talk contribs created page Sophos Connect to passive firewall when two firewall are in active/passive HA (Created page with "Home > Enterprise security devices or applications > Sophos Firewall or IPS > Sophos Connect to passive firewall when two firewall are in active/passive HA When two firewalls are in active/passive HA, if we connect to LAN/WAN IPs over https or ssh, we get connected only to active firewall. If we want to check something specific about passive firewall then we can ssh to passive firewall from active firewall. Thus, first we need to SSH to activ...")
- 11:52, 14 June 2023 Saurabh talk contribs created page Enable IPv6 and IGMP snooping on VLAN 3939 required for VxRail (Created page with "Home > VMWare platform > VxRail > Enable IPv6 and IGMP snooping on VLAN 3939 required for VxRail VxRail by default requires VLAN 3939 for nodes to discover each other. Ideally on this VLAN we should enable IGMP snooping and IPv6. The same can be done for a few switch makes as follows: =Dell switch= <pre> config t ip igmp snooping enable ipv6 mld snooping enable exit show ipv6 mld snooping interface vlan 3939 </pre> =Aruba or HP...")
- 13:39, 11 June 2023 Saurabh talk contribs created page Panorama NAT examples (Created page with "Home > Enterprise security devices or applications > Paloalto firewall > Panorama NAT examples =NAT from public IP to private IP via panorama only for a specific destination= When packets are coming from a specific WAN IP (Src-pub-IP1) and going to a specific WAN public IP (dst-pub-IP2) and need to be translated to a LANIP (dst-priv-IP3) for a specific service on port (service-port1) then we need to do following configuration in panorama: ==Pol...")
- 07:22, 11 June 2023 Saurabh talk contribs created page Managing windows services using sc command (Created page with "Home > Windows > Windows Desktop Tools or Utilities > Managing windows services using sc command Normally we can go to Services option in control panel (or under computer management) to look at status of various services and start/stop them. However there is also option to start/stop service via commandline. =Finding name of service= Look at servicename in properties of service when opened using services under control panel =Start service fr...")
- 07:14, 11 June 2023 Saurabh talk contribs created page CentOS 8.x Unattended nomachine (Created page with "Home > CentOS > CentOS 8.x > CentOS 8.x remote access > nomachine > Unattended nomachine In case of machine which is only booted but no graphical user login has been done yet, nomachine remote may not work. In such cases if nomachine is leading to blank screen then try: # Edit '<tt>/usr/NX/etc/server.cfg</tt>' and set: #:<pre> #:: CreateDisplay 1 #:: DisplayOwner "saurabh" #:</pre>...")
- 07:08, 11 June 2023 Saurabh talk contribs created page Rocky 8.x New laptop OS configuration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 8.x > System Administration > Rocky 8.x New laptop OS configuration =OS installation= # Prepare bootable Rocky Linux 8 USB using: #:<pre> #:: dd if=Rocky-8.7-x86_64-dvd1.iso of=/dev/sdd #:: sync #:</pre> #::'''Assumes umount /dev/sdd* is done and that /dev/sdd does not has any critical data''' before itself. #: This can also be done using Rufus in Windows by using dd...")
- 05:41, 11 June 2023 Saurabh talk contribs created page VCenter 6.7 or 7 certificate expiry leading to 503 service not available error (Created page with "Home > VMWare platform > VMWare vCenter > vCenter 6.7 or 7 certificate expiry leading to 503 service not available error If vCenter internal certificates expire we may get 503 service unavailable error or other errors as shown at VMWare KB https://kb.vmware.com/s/article/76719 To solve this use: # You can validate whether you have this issue or not via steps explained at https://kb.vmware.com/s/article/79248 ## Downlooad checksts script from...")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x System Administration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration *Rocky 9.x New machine configuration Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x New machine configuration (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration *Rocky 9.x Configure new laptop for personal use Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration")
- 05:05, 11 June 2023 Saurabh talk contribs created page Rocky 9.x Configure new laptop for personal use (Created page with "Home > Rocky Linux or CentOS > Rocky Linux 9.x > System Administration > New machine configuration > Configure new laptop for personal use =OS installation= # Prepare bootable Rocky Linux 9 USB using: #:<pre> #:: dd if=Rocky-9.0-x86_64-dvd.iso of=/dev/sdd #:: sync #:</pre> #::'''Assumes umount /dev/sdd* is done and that /d...")
- 11:26, 31 May 2023 Saurabh talk contribs created page Comparing MDM with DLP with End-point security (Created page with "Home > Security tips > Comparing MDM with DLP with End-point security Endpoint Security, Data Leak Prevention (DLP), and Mobile Device Management (MDM) are three distinct but complementary technologies that address different aspects of security in an organization. Here's a comparison of these three and their typical use cases: =Endpoint Security= This focuses on securing endpoints, or end-user devices like desktops, laptops, and mobile devices. En...")
- 11:06, 31 May 2023 Saurabh talk contribs created page Generate new CSR by referring existing details from current certificate including private key (Created page with "Home > Security tips > Generate new CSR by referring existing details from current certificate including private key This internally refers Openssl. '''This is not fully tested.''' To generate a new CSR from existing certificate and key, then sign it and then import it use: # On existing server with certificate and key, open mmc -> Certificate # Export existing certificate with key in pfx format. #: Need to give a password while exporting...")
- 06:40, 24 May 2023 Saurabh talk contribs created page Ubuntu HPC Create new user (Created page with "Home > Ubuntu > HPC setup with openpbs and openmpi > Create new user Once HPC setup is done properly, to create any new user (eg user3) please use below steps: #Create user using: #:<pre> #:: useradd -m -d /export/home/user3 -s /bin/bash user3 #:: passwd user3 #:</pre> #Create SSH key and configure them as authorized using: #:<pre> #:: su - user3 #:: ssh-keygen #:: cat ~/.ss...")