User contributions for Saurabh
From Notes_Wiki
- 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
- 17:24, 15 May 2022 diff hist +87 m CentOS 8.x freeipa basic setup current
- 17:24, 15 May 2022 diff hist +181 m CentOS 8.x Freeipa migration from openldap to freeipa current
- 17:23, 15 May 2022 diff hist −24 m CentOS 8.x monitoring
- 17:23, 15 May 2022 diff hist −3 m CentOS 8.x Zabbix
- 17:23, 15 May 2022 diff hist +158 m CentOS 8.x Zabbix add hosts
- 17:23, 15 May 2022 diff hist +32 m CentOS 8.x Zabbix add network switches for SNMP based monitoring
- 17:22, 15 May 2022 diff hist +65 m CentOS 8.x Zabbix installation
- 17:21, 15 May 2022 diff hist −27 m CentOS 8.x remote access
- 17:21, 15 May 2022 diff hist −7 m CentOS 8.x anydesk current
- 17:21, 15 May 2022 diff hist +29 m CentOS 8.x OS auto-login with anydesk auto-startup for seamless remote current
- 17:20, 15 May 2022 diff hist +163 m CentOS 8.x Install anydesk current
- 17:19, 15 May 2022 diff hist −9 m CentOS 8.x nomachine
- 17:19, 15 May 2022 diff hist +232 m CentOS 8.x Install nomachine current
- 17:18, 15 May 2022 diff hist +176 m CentOS 8.x nomachine enable clipboard current
- 17:16, 15 May 2022 diff hist −26 m CentOS 8.x file sharing current
- 17:16, 15 May 2022 diff hist +255 m CentOS 8.x Owncloud
- 17:14, 15 May 2022 diff hist −34 m CentOS 8.x vsftpd current
- 17:13, 15 May 2022 diff hist +5 m CentOS 8.x clamav current
- 17:12, 15 May 2022 diff hist −5 m CentOS 8.x AIDE current
- 17:12, 15 May 2022 diff hist +70 m CentOS 8.x Basic AIDE setup and usage current
- 17:11, 15 May 2022 diff hist −30 m CentOS 8.x networking tools current
- 17:11, 15 May 2022 diff hist −17 m CentOS 8.x openvpn client current
- 17:11, 15 May 2022 diff hist +48 m CentOS 8.x openvpn client troubleshooting current
- 17:10, 15 May 2022 diff hist −26 m CentOS 8.x Backup tools current
- 17:09, 15 May 2022 diff hist −5 m CentOS 8.x rclone current
- 17:09, 15 May 2022 diff hist +66 m CentOS 8.x rclone for syncing documents to google drive
- 17:08, 15 May 2022 diff hist −4 m CentOS 8.x rsync
- 17:08, 15 May 2022 diff hist +155 m CentOS 8.x Copying or backup of documents using rsync current
- 11:44, 15 May 2022 diff hist +470 m Rsnapshot
- 08:57, 15 May 2022 diff hist +923 N 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..." current
- 08:56, 15 May 2022 diff hist −153 m CentOS 8.x Systemd based reverse ssh tunnel service
- 08:54, 15 May 2022 diff hist +57 m CentOS 8.x mediawiki current
- 08:52, 15 May 2022 diff hist +6,018 N 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..."
- 08:05, 15 May 2022 diff hist +97 m CentOS 7.x Systemd based reverse SSH service
- 08:02, 15 May 2022 diff hist +29 m CentOS 8.x Security tools current
- 17:26, 13 May 2022 diff hist +1,229 N 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..." current
- 17:22, 13 May 2022 diff hist +50 m VMWare vSphere or ESXi
- 14:44, 13 May 2022 diff hist +124 m OpenSuse Leap 15 Rescan disks current
- 14:40, 13 May 2022 diff hist +402 N 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"
- 14:39, 13 May 2022 diff hist +49 m Switch configuration notes
- 14:38, 13 May 2022 diff hist +138 m CentOS 8.x Configure barjatiyarklp after OS installation overwriting existing root partition
- 14:36, 13 May 2022 diff hist +177 m CentOS 8.x Configure rekallcm1 (high-end desktop) with software raid, lxc, kvm and other utilities →Re-add various older VMs current
- 14:33, 13 May 2022 diff hist +103 m Create template of nested ESXi for cloning and repeat use current
- 14:14, 13 May 2022 diff hist +1,629 N 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..." current
- 14:06, 13 May 2022 diff hist +61 m Switch configuration notes
- 13:59, 13 May 2022 diff hist +5,532 N 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..."
- 13:57, 13 May 2022 diff hist +61 m CentOS 8.x File system management
- 13:54, 13 May 2022 diff hist +281 m Create standard port-group for trunking all VLANs to VM current
- 13:37, 13 May 2022 diff hist +1,954 m Build VxRail 7.0
- 13:19, 13 May 2022 diff hist +164 m Production deployment for vCF 4.3.1.0
- 12:08, 13 May 2022 diff hist +743 m Production deployment for vCF 4.3.1.0
- 11:45, 11 May 2022 diff hist +579 m Build VxRail 7.0
- 10:13, 11 May 2022 diff hist +218 m CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes
- 10:07, 11 May 2022 diff hist +396 m CentOS 7.x Rocks cluster 7.0 Update master and all compute nodes
- 09:58, 11 May 2022 diff hist +1,295 N 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..."
- 09:22, 11 May 2022 diff hist +70 m CentOS 7.x Rocks cluster 7.0
- 08:34, 11 May 2022 diff hist +32 m CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role current
- 08:34, 11 May 2022 diff hist +6 m CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role
- 08:33, 11 May 2022 diff hist +3 m CentOS 7.x Rocks cluster 7.0
- 08:33, 11 May 2022 diff hist +70 N CentOS 7.x Rocks cluster 7.0 Sun Grid Engine sge role Saurabh 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 current Tag: New redirect
- 08:33, 11 May 2022 diff hist 0 m CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role Saurabh 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
- 08:33, 11 May 2022 diff hist +87 m CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role
- 08:31, 11 May 2022 diff hist +825 m CentOS 7.x Rocks cluster 7.0 Son of Grid Engine sge role
- 08:02, 11 May 2022 diff hist +1,866 N CentOS 7.x Rocks cluster 7.0 Son of 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..."