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Backup Master Boot Record

Nishant

Apr 20, 2010 • 1 min read

dd if=/dev/sda of=/tmp/mbr.img bs=512 count=1

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Install Docker on Centos 7

Install Docker: yum install docker docker-registry systemctl enable docker.service systemctl start docker.service systemctl status docker.service Install Docker Compose: curl -L "https://github.com/docker/compose/releases/download/1.23.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose chmod +x /usr/local/bin/docker-compose

Nishant May 9, 2019 • 1 min read

Ntpdate Not syncing time correctly – Xen Host

I came across a situation where ntpdate would not sync the time correctly in a Xen Virtual machine. The time was 10 minutes ahead of what it was supposed to be. Apparently , you need to force it to not use the dom0’s clock. vi /etc/sysctl.conf xen.independent_

Nishant Jan 6, 2015 • 1 min read

Apache is running a threaded MPM, but your PHP Module is not compiled to be threadsafe.

You may come across this error in newer version of apache which is because the newer configurations use an event based Multi Processing Module by default. If the PHP is not compiled with threadsafe, you will need to switch to the prefork MPM, which does not use threads. Apache is

Nishant Oct 23, 2014 • 1 min read

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