Linux DD
Plug the USB Drive to PC , and check the disk:fdisk –l Assumtion : USB Disk at /dev/sdb Unmount the USBumount /dev/sdb* Format the drivemkfs.vfat /dev/sdb –I DD the Image from ISO to USD Pendrive dd...
Read MoreCategory: Linux
Ubuntu 14.04 Boot – plymouth-upstart-bridge Issue
Force Ubuntu boot into console : Edit : /etc/defaults/grub Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console to GRUB_TERMINAL=console Set line GRUB_CMDLINE_LINUX_DEFAULT=”noplymouth” Save...
Read MoreUbuntu freeze at swap
New Ubunt 14.04 Freeze at Swap. It is doing this because Ubuntu is trying to switch to a high resolution video mode for the console and your hardware isn’t cooperating. Fixing this while at the machine When Grub2 shows up:...
Read MoreUbuntu Recovery Mode – Readonly File System
In Order to emergency, change configuration or reset root password. Follow following steps 1. Shutdown the computer 2. Boot into Recovery Mode –After BIOS load, hold down Shift key to access the grub menu –Once in...
Read MoreChecking SSD Health
To check SSD health, need to install smartertools At Ubuntu or similar Distro (CentOS please use yum) #apt-get install smartmontools Check the Media_Wearout_Indicator # smartctl -a /dev/sda | grep Media_Wearout_Indicator To show...
Read MoreInstall monit to Monitor Services (Ubuntu)
Install monit apt-get install monit Configuring of monit vi /etc/monit/monitrc enable following line , to view the services via http set httpd port 2812 and use address localhost # only accept connection from localhost allow...
Read MoreKVM Create Template from Virtual Disk (Raw file)
For running KVM virtualization, here is steps of creating template from installed VM: 1)Shutdown the VM 2) Issue following command : qemu-img convert -O raw Source-Disk.raw Destination-Template.img * There is no compression, so...
Read MoreLinux CLI connect to Console
Install UUCP package . And use following command : $ cu -l /dev/ttyS0 -s 9600
Read MoreAddting New Disk to XenServer
Here is adding new disk to XenServer 1. Login to Console 2. fdisk -l to identify which one is the disk, for example /dev/sdb 3. enter following command – xe sr-create name-label=<Name of Storage> shared=false...
Read MoreLinux – Force Reboot System
Sometime, “reboot” command not working, and system restart just half way running, especially when in ssh. This is command to force reboot Linux System, similar to press reset at hardware – echo 1 >...
Read MoreLinux Router – Network Table Overflow
To solve linux network table overflow issue, enlarge ARP table – edit /etc/sysconf.ctl net.ipv4.neigh.default.gc_thresh1 = 4096 net.ipv4.neigh.default.gc_thresh2 = 8192 net.ipv4.neigh.default.gc_thresh3 = 8192...
Read MoreChecking Disk I/O
Use this command to check the I/O dd if=/dev/zero of=test bs=64k count=4k conv=fdatasync count=1000
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