Download of the day: Oracle VM

Posted on in Categories Download of the day, High performance computing, Linux, Linux distribution, Linux Virtualization, Networking, xen last updated December 12, 2007

Virtualization is the process of abstracting computing resources such that multiple operating system and application images can share a single physical server, bringing significant cost-of-ownership and manageability benefits. Through its Oracle VM product, Oracle offers scalable, low-cost server virtualization for heterogeneous applications.

Oracle VM is free server virtualization software that fully supports both Oracle and non-Oracle applications, and is three times more efficient than other server virtualization products.
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XEN Server Status Monitoring Command Cheat Sheet

Posted on in Categories CentOS, Debian Linux, Howto, Linux, Linux Virtualization, Monitoring, RedHat/Fedora Linux, xen last updated November 15, 2007

The xm command is the main command line interface for managing Xen guest domains. The program can be used to create, pause, and shutdown domains. It can also be used to list current domains, enable or pin VCPUs, and attach or detach virtual block devices.

Please note that before running any one of the following command you must run xend ( Xen control daemon aka service) and must be run as privileged user. Running xm command as non root will return an error.

I hope following XEN status monitoring cheat sheet will save your time.
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RHEL: Linux Bond / Team Multiple Network Interfaces (NIC) Into a Single Interface

Posted on in Categories fedora linux, Howto, Networking, RedHat/Fedora Linux, Tips last updated March 27, 2016

Finally, today I had implemented NIC bounding (bind both NIC so that it works as a single device). Bonding is nothing but Linux kernel feature that allows to aggregate multiple like interfaces (such as eth0, eth1) into a single virtual link such as bond0. The idea is pretty simple get higher data rates and as well as link failover. The following instructions were tested on:

  1. RHEL v4 / 5 / 6 amd64
  2. CentOS v5 / 6 amd64
  3. Fedora Linux 13 amd64 and up.
  4. 2 x PCI-e Gigabit Ethernet NICs with Jumbo Frames (MTU 9000)
  5. Hardware RAID-10 w/ SAS 15k enterprise grade hard disks.
  6. Gigabit switch with Jumbo Frame