To mitigate the flaws of the two large vulnerabilities vendors have been scrabbling to come out with updates to provide consumers with a fix. If exploited, these vulnerabilities can give hackers unprecedented access to compromised systems and widespread liberty to steal a broad variety of confidential, sensitive data. Their severity, complexity and scope puts them […]
As of June 8, 2017, it was announced that when when users try to sign up for Amazon Drive they will not be able to select an unlimited cloud storage option. Instead they can choose either 100 GB for $11.99 per year, or 1 TB for $59.99, with up to 30 TB available for an […]
dig can we very useful in finding out DNS related issues. To install dig for Window/ Linux/ MacOSX click here. A basic dig command – dig a domain nameIn the most basic of dig commands, you have a domain name like www.microsoft.com, and you want to find information about it, so you issue the following […]
Prerequisites: VM/ Physical – It is recommended to have the time server as a physical server, but VMs should be okay depending on your setup and requirement. My virtual lab environment is VMware based so here’s the guide for a VM. Once the CentOS Minimal is installed on the VM make sure to install open-vm-tools. […]
Recently I needed to configure all of our 40 or so ESXi hosts to forward SNMP traps to our corporate monitoring solution. This meant enabling and configuring SNMP on each of the hosts. Naturally, I wrote a script for this as 40 hosts is way too many to do manually. This article shows you how […]
So ran into a view issue for a Linux Host today. Kernel Panic !!! There could be a number of reasons that you might get this error. The three common reasons may be: There was a change to selinux config – (that might be an error in the config file) There are disk errors The […]
The resolver is a set of routines in the C library that provide access to the Internet Domain Name System (DNS). The resolver configuration file contains information that is read by the resolver routines the first time they are invoked by a process.
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1 |
$ cat /etc/resolv.conf |
OR
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1 |
$ less /etc/resolv.conf |
Sample output:
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1 2 |
nameserver 203.54.1.20 nameserver 203.54.1.21 |
Steps: Make sure HBA is connected on the PCI slot and visible under esx hardware list:
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1 |
esxcli hardware pci list |
Check if VMKernel can detect any storage via Fibre Channel
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1 |
esxcli storage san fc list |
(output will be blank line if HBA driver is missing but HBA appears to be in PCI card determined from step 1)
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1 |
esxcli storage core adapter rescan |
Search and download the […]
CentOS guest instances in VMware sometimes come up with the boot error message:
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1 |
piix4_smbus 0000:00:007.3: Host SMBus controller not enabled! |
This error is being caused because VMware doesn’t actually provide that level interface for CPU access, but Ubuntu try to load the kernel module anyway. How to fix it:
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1 |
sudo nano /etc/modprobe.d/blacklist.conf |
add the line:
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1 |
blacklist i2c-piix4 |
Reboot. NOTE: for older versions use blacklist i2c_piix4 […]
VMware Tools is one of important components for virtual machine (VM) in order get excellent performance. It is a group of utilities that help to enhances the overall performance of the virtual machine’s guest operating system (OS) and improves management of the VM. Without the VMware Tools, guest OS performance will lacks some of the […]
