CentOS 7: Rsyslog Configuration for Apache

Configuring central logging is one of many important thing that you should configure to secure your system, it allow you to have an exact timeline in case of an incident or for troubleshooting reason. I was in the process of configuring some machines to send their logs to a remote system, the thing is that […]

AutoRoot – Automatically Reset The root Password On Linux Machines

AutoRoot will scan for any logical volume containing the word root or for block devices starting from /dev/sda1…/dev/sda10, /dev/sdb1…/dev/sdb10, /dev/sdc1…/dev/sdc10, it will then try to mount the volume and check for the password file,if found, it will change the root password to: vNugget.com This started as a simple exercise to get familiar with the python […]

[Script] View Virtual Machine Events

ViewVmEvents is a python script that can be used to view a specific event related to a VMware virtual machine. The events type can be one of the following: Reboot, Shutdown or Standby. I was experimenting with the Pyvmomi SDK for the VMware vSphere API, on how I can quickly view a virtual machine event without going […]

vRealize Automation: Compute Resources Doesn’t Show During Fabric Groups Creation

A lot of things can cause this behavior, in my case, when I tried to create a Fabric Groups, the compute resources didn’t show! The logs in vRealize Automation appliance (v7.0.1) show the following error in Infrastructure => Monitoring => Log: This exception was caught: The attached endpoint ‘vCenter’ cannot be found. The first thing […]

How to Suppress the SSL Warning in Python/pyVmomi

I was experimenting with the VMware Web service SDK using pyVmomi and I got some error that need to be documented her. I’m using pyVmomi 6.0.0 in a vSphere 6 environment. The first one was an SSL warning when using pyVmomi to acquire a service instance, if you try to use SmartConnect you will get the […]

Uploading Files to vCenter Server Appliance using WinSCP (SFTP/SCP)

If you are having a problem using Winscp to upload files to the vCenter Server Appliance (VCSA), you should change some settings on the Winscp client or the VSCA appliance, it depend on what protocol you are using SFTP or SCP. Using SFTP: When opening a connection to VCSA, you get the following error: Host […]

How To Build an Optimized Squid Proxy Server

Last week I was experimenting with a Squid proxy server configuration and trying to see if I can get better performance, I still have a lot to do, but I thought it will be more interesting to publish my configuration and see if someone can take it to the next level and share his experience. […]

Five Exam Preparation Strategies That Works

It’s been almost a year that I’ve got my first VCAP-DCA certification, but instead of writing about how I prepared for it, I thought it will be more useful to write about a global strategy for every certification exam. I’m a big fan/believer on IT certifications, especially those lab based, because you can’t brain dump […]

vRealize Automation Installation – Troubleshooting

Today I was experimenting with the manual installation process of vRealize Automation, which is used during a distributed deployment. The IaaS installer is used to install different components of the vRealize Automation platform in this mode. The image below, show different separate components for HA deployment. Image from http://pubs.vmware.com I got some error during the installation […]

Unable to Create/Delete Link Aggregation Using dladm

I was working on the network part of some Solaris servers today, this involved deleting and recreating things like vnic, interface and link aggregation. The planned configuration look like this one: image from http://docs.oracle.com/ After deleting all the network configuration from the LDOM, I wasn’t able to recreate the link aggregation, the following error was shown: […]