Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2
This chapter describes how to configure Layer 3 virtualization. Cisco NX-OS supports virtual routing and forwarding instances (VRFs). Each VRF contains a separate address space with unicast and multicast route tables for IPv4 and makes routing decisions independent of any other VRF.
One of the things I like/enjoy the most in my job as a consultant is working with people to help assist in the design process to come up with a solution that solves a specific customer challenge or meets design requirements criteria.
Last 15th November I attended and presented at the 4th Italian VMUG UserCon in Milano. First, let me say thanks to all the people I met: some stopped by to talk, to ask questions, to discuss “anything IT”, some just to say hi.
As mentioned before, I’ve kinda turned my home lab into some sort of Slack-Ops deal, where various services in my home lab notify me of events in a private Slack channel. The latest rendition of that, is adding Slack notifications from phpipam.
This post continues from the Operationalize Your World post. Do read it first so you get the context. A common request among VMware Admin is to give their customers a self service access to their own VMs.
This document describes the operation and configuration of VXLAN routing on an Arista platform in conjunction with MLAG for redundancy. The configuration and guidance within the document unless specifically noted is based on the platforms and EOS releases noted in the table below.
anycastaristadc networkingencapsulationnetworkingptwroutingspine and leafvxlan
I put together this short vSphere Integrated Containers v0.6.0 video (~4 minutes) showing how you can deploy a container running a web server, in this case Nginx, and have its ports mapped back to the Container Host (VCH), allowing you to access the web server from the VCH.
In recent years REST (REpresentational State Transfer) has emerged as the standard architectural design for web services and web APIs. In this article I'm going to show you how easy it is to create a RESTful web service using Python and the Flask microframework.
Home Assistant is an open-source home automation platform running on Python 3. Track and control all devices at home and automate control. Perfect to run on a Raspberry Pi. Home Assistant will track the state of all the devices in your home, so you don't have to.
This (video) study guide is based on the VCIX-NV Exam Blueprint Guide v1.7 and v1.9. For the following elements we need to have a fully working vSphere environment with vShield fully integrated and this will be “migrated / upgraded” to NSX.
Refresher: NSX SDN-LAB is a fully virtualized and nested lab running on VMware’s internal cloud. This lab is architected and developed by Hany Michael – Senior Staff Architect in the Networking & Security Business Unit @ VMware.
If you are not following my vCloud adventure, I suggest you go back and read the first post about it ; ) In this post I will cover how to create and configure a RabbitMQ’s queue to receive the messages generated by VMware vCloud Director.
The 2016 NUMA Deep Dive Series: Part 0: Part 1: Part 2: System Architecture Part 3: Cache Coherency Part 4: Local Memory Optimization Part 5: ESXi VMkernel NUMA Constructs Part 6: NUMA Initial Placement and Load Balancing Opera
In today’s business world, seconds matter. Downtime in critical applications, such as financial transactions, industrial automation and other vital infrastructure, has wide ranging economic, security and legal consequences.
I ran into this issue last week. I was preparing a new cluster for VXLAN and failed to open the firewalls to the vib could be pushed out to the ESXi hosts. This caused the prepare for network vitalization to fail.
VMware released free vCloud Director Fundamentals e-learning course. It is based on the latest vCloud Director v 8.10 and goes into quite a depth in about 3-4 hours. Register for the e-learning course here.
PiHole is an open source project for Raspberry Pi that acts as a DNS server to block known advertising domains. More information on the project can be found here. Pi-Hole can also run on x86 Linux Servers, and is fairly simple to set up. Install PiHole on your already existing Linux Server.
Author’s Note: Please remember, I originally wrote this article in the late 1990’s and updated it in 2000. The logic and the narrative of the article are fine. The principles discussed are currently valid.
AirSembly is now enhanced with full-featured automation with vCloud Director v8.0. AirSembly is the only cloud marketplace platform purpose-built for VMware providing the most feature-rich automation with VMware vCloud Director.
Last month, I wrote a post on how to deploy vSphere Integrated Containers (VIC for short). As the team continue to build functionality into this newly architected product, a number of the deployment steps for the VCH, Virtual Container Host, have now changed since my previous post.
Azure Stack enables deploying Platform as a Service (PaaS) services from Microsoft and other 3rd party providers. You can also download the tools described below. If you want to be notified of new services and tools, follow #AzureStack on Twitter.
Recently I’ve participated in a number of discussions around Virtual SAN and vSphere HA where a couple of great and interesting questions have been brought up with regards to Virtual SAN and vSphere HA interoperability and behavior.
Love them or loath them, Amazon Dash buttons are pretty cool little devices. What most people consider to be nothing more than a simple way to stock up on Gatorade and nappies are actually one of the cheapest 802.
VMware Storage vMotion fails with the method is disabled by VM-ID. Resolution: To workaround this issue: 1. Power off the virtual machine. 2. In the vSphere Client, right-click the virtual machine and click Remove from Inventory. 3. Browse to the datastore where the virtual machine resides. 4.
I recently completed a post and blueprint for Ravello Systems. Part 1 discusses VMware NSX architecture and features of Cisco Nexus 1000v, Part 2 highlights differences and Part 3 illustrates how to set up VMware NSX and Cisco Nexus 1000v on Ravello Cloud.
tl;dr We’re releasing Photon Controller v0.8 today — a major release with significant improvements. Want to get started right away? Check out the wiki on GitHub. Photon Controller is an infrastructure stack purposefully-built for cloud-native applications.
The VMware Photon Platform is a new infrastructure stack optimized for cloud-native applications. It consists of Photon Machine and the Photon Controller, a distributed, API-driven, multi-tenant control plane that is designed for extremely high scale and churn.
Several weeks back, the Cloud Native Apps team at VMware released a significant update to their Photon Controller platform with their v0.8 release focused on simplified management and support for Production scale.
Snap is an open telemetry framework designed to simplify the collection, processing and publishing of system data through a single API. The goals of this project are to: These and other terminology are explained in the glossary.
I can sum up every article, book and column written by notable management experts about managing IT in two sentences: "Geeks are smart and creative, but they are also egocentric, antisocial, managerially and business-challenged, victim-prone, bullheaded and credit-whoring.
VMware vSAN is one of the most intriguing hyper-converged/ software defined storage solutions out there. Having the ability to use fast local storage without a single point of failure in virtualization environments is what people are asking for years.
One of the features of NSX-v is the ability to create a Layer 2 VPN between 2 NSX-v Edge Services Gateways (ESG from now on). But what happens if there is no NSX-v at the destination where you would like to extend your Layer 2 network. As of NSX-v 6.1.
Thomas Brown joins the professionalvmware.com #vBrownBag to wrap up the VCAP-DTD mini-series, reviewing sections 5 and 6 of the the VMware Certified Advanced Professional in Desktop Design blueprint. You can find Thomas on Twitter @thombrown and his blog at http://www.thomas-brown.com/.
There has been a lot of news recently about the availability of vSphere Integrated Containers (VIC) v0.1 on GitHub. VMware has being doing a lot of work around containers, container management and the whole area of cloud native applications over the last while.
I’ve already written a few articles around this, notably on stretched cluster upgrades and on-disk format issues. In this post, I just wanted to run through the 3 distinct upgrade steps in a little more detail, and show you some useful commands that you can use to monitor the progress.
With the new release of Virtual SAN 6.2, the engineering teams have made significant efforts on increasing the product’s interoperability with Command Line tools, and deliver accessible APIs for just about everything on the product.
Over the last week, I have being migrating hundreds of hosts from one vSphere to another to facilitate an architectural redesigned provided to my client by VMware PSO. As part of the migration, the hosts were going to be reimaged and new network settings applied to them.
I am currently designing a vCloud Director environment and one of the requirements was to use Cisco Nexus 1000V virtual distributed switch with VXLAN support. VXLAN is the new standard to create virtualized networks.
This is part 5 of the NSX Distributed Logical Router (DLR) and Edge Services Gateway (ESG) with OSPF configuration guide, describing the configuration of OSPF and DLR DHCP Relay to an external DHCP Server. What are we trying to do in this section?
[ALBUM/TOUR] Not just a homelab, but a learning area. Here's what I've built over the last few months. I'm by no means done, but I believe I'm officially "good on hardware" for a while. This is my "Man cave" in a Studio Apartment. (imgur.com) Note, links here with a [!] are ones not in the album.
The Cross-VC NSX feature introduced in VMware NSX 6.2, allows for NSX logical networking and security support across multiple vCenters. Logical switches (LS), distributed logical routers (DLR) and distributed firewall (DFW) can now be deployed across multiple vCenter domains.
Here I am going to explain how to configure a vRealize Orchestrator 7 appliance and configure it as external Orchestrator for vRealize Automation 7 – the latter is merely a ticketbox – but a single screenshot is a tad too boring ? First I have replaced the VAMI certificate – I have written
Is there some faster way than /dev/[u]random? Sometimes, I need to do things like The random devices are "too" secure und unfortunately too slow for that. I know that there are wipe and similar tools for secure deletion, but I suppose there are also some on-board means to that in Linux.
Acetone has been used for some time to treat ABS parts, either by polishing, vapor smoothing, or even using it to stick parts together. Likewise, Methyl ethyl ketone (MEK) has been used to the same effect with ABS.
Jasper is designed specifically for the Raspberry Pi (Model B) and requires some additional hardware like a wifi adapter and USB microphone. The suggested hardware is indicated below with links for further details.
alexahackinghome automationjasperptwraspberry pivoice control
Since ZFS was ported to the Linux kernel I have used it constantly on my storage server. With the ability to use SSD drives for caching and larger mechanical disks for the storage arrays you get great performance, even in I/O intensive environments.
Before Docker came along, virtualenv was pretty much the tool of choice for Python developers as it allows you to separate package dependencies for different applications you're working on without having to create separate virtual machines for each one. It worked very well for me.
Not so recently I released my studio website which uses WordPress, so I had to set up a web server from scratch, I found this a good oportunity to write something helping people easily set up a high performance WordPress using the latest mainstream technology, hopefully you find this article helpfu
On one of my visits to the Computer History Museum – and by the way this is an absolute must-visit place if you are ever in the San Francisco bay area – I saw an early Google server rack circa 1999 in the exhibits.
Next: 7. NSX L2 Bridging -> In the previous article of this VMware NSX tutorial, we looked at the VXLAN & Logical switch deployment within NSX. Its now time to look at another key component of NSX, which is the Distributed Logical Router, also known as DLR.
Cockpit makes it easy to administer your GNU/Linux servers via a web browser. Cockpit makes Linux discoverable, allowing sysadmins to easily perform tasks such as starting containers, storage administration, network configuration, inspecting logs and so on.
Every time I install a new Linux kernel, it gets left in the grub_config, making the boot menu longer each time. Does Ubuntu provide any easier way to clean them up or keep them from showing in the boot list?
New Users should start here. There are several sections, including Introduction, Installation, The Basics, FAQ, Reference, and Advanced Topics. There are seperate pages for the Cacti Plugin, and for the optional web-based editor.
My Trident 2 Chipset and Nexus 9500 blog post must have hit a raw nerve or two – Bruce Davie dedicated a whole paragraph in his Physical Networks in Virtualized Networking World blog post to tell everyone how the whole thing is a non-issue and how everything’s good in the NSX land.
Today I had to deploy an instance for vRealize Orchestrator (vRO) 6.0.3 in my lab and ran into some snags that I thought I’d document here. I’ve always used the vRO/vCO configuration page to add vCenters and this functionality looks to have been removed.
My last post went over the Nexus line and basics about each device. This post will dive into the design aspect of a DC network and how it differs from a traditional hierarchical 3-tier enterprise network.
datacentereormornetworkingplacementptwspine and leaftor
Anton sent me an interesting question: Most IP phones have a network facing port and a port for user to connect the PC. Today a user plugged in both of these ports into the switch. It looks like phone filters out BPDUs, so the switch did not catch this loop.
Do some of you remember my Blog Post about automating Veeam with vCO and Powershell (http://www.vcoportal.de/2013/04/vco-and-veeam-backupreplication-a-powerful-combination/)? The problem at this time was that Veeam only offers a PowerShell API.
Earlier this month I hosted “vRA 6.2 Install and Config Live!“, an open-invite social event dubbed “vRA Live” (#vralive). To my surprise, I had 185 RSVP’s with more than 100 people — VMware partners, customers, and several of my peers — attending the 4 1/2+ hour online session.
This article is specific to NFS datastores. For similar error on VMFS datastores, see Investigating virtual machine file locks in ESX/ESXi (10051). Note: If a virtual machine does not show as running in the vSphere Client or you are unable to stop it, terminate the virtual machine.
One of the most exciting new feature in VSAN 6.1 is the new Stretched Clustering capability which also provides support for a 2-Node ROBO deployment. If you are interested in learning more about the new VSAN 6.
Should you construct a Leaf/Spine fabric with 10G or 40G? In this post I’ll make the simple observation that using 10G interfaces in your leaf/spine fabric scales to more servers than using 40G interfaces, all with the same hardware, bandwidth, and oversubscription.
As data centers become increasingly dynamic and dense with virtualization - how the classic Ethernet switching design adopts to these new models and scales becomes an important and challenging question.
Should you be concerned about a Layer 2 loop in your campus network? My answer is absolutely. In this article, I explain why you should take steps in protecting your campus network. This article also provides practical steps in reducing the effects of a Layer 2 loop on a Cisco Catalyst 6500.
This blog is a quick note about an easily misunderstood set of switch commands, Cisco Traffic Storm Control. The commands are very useful, and work. However, they do seem to be commonly misunderstood — or else the documentation is wrong.
EVPN or Ethernet VPN is a new standard that has finally been given an RFC number. Many vendors are already working on implementing this standard since the early draft versions and even before that Juniper already used the same technology in it’s Qfabric product.
For as long as we’ve been doing Network Virtualization, there has been debate about how best to encapsulate the data. As we pointed out in an earlier post, it’s entirely reasonable for multiple encapsulations (e.g. VXLAN and STT) to co-exist in a single network.
There are many great NSX installation blogs and videos. My favourite is this series by Sid Smith. My friend Roshan Jha has also detailed it here. In this post I will just post the flow chart diagrams. I could not find a diagram, so I created them.
Last year I wrote about a very interesting tool called vCenter Server Simulator (VCSIM) which allows a user to quickly simulate a VMware environment that can be comprised of thousands of ESXi hosts and virtual machines.
The past few months I have been getting more familiar with . By now it should be obvious that OpenStack will not be going away anytime soon, so it’s time to embrace it. Yes, I’m talking to you VMware admins!
Believe me or not, but an essential (Windows) tool, cleanmgr.exe, is not present in Windows Server 2008 and Windows Server 2008 R2 by default. This is by Microsoft’s, at the very least hard-to-explain, design, who likely believe it’s more of a desktop experience feature than a must-have tool.
I’ve been doing some standard maintenance on my Dell R815 hosts (upgrading BIOS, firmware, drivers etc.) and ran into some difficulty with one particular server. I use the Dell Management Plugin for VMware vCenter to carry out these operations, and besides being slow it works well.
What’s your home off-site backup strategy? Right now I’m just backing up the household Macs via Time Machine to a local 4TB disk. This is ok… unless we have a fire. Guess who just had a fire? (A three-foot section of our wood fence caught on fire around midnight July 3.
ReadyNAS Ultra 2 can be easilly upgraded to last ReadyNAS OS6. Source Download R4toR6_Prep_Addon.bin and install it. Wait for installation confirmation.DON'T REBOOT Download R4toR6_6.1.6.bin and install it. Reboot once installed.
In the vSphere Client, activate the Networking inventory view and select the vNetwork Distributed Switch. Navigate to Inventory > Networking to go to the Networking View. Right Click on the Distributed Virtual Switch in the inventory pane and then Click Migrate Virtual Machine Networking.
There may be scenarios where you need to move management vmkernel port from vDS back to vSS. One of them may be changing management vlan. Because the default Rollback function may prevent you from changing management vlan.
Today I ran into the situation where I need to migrate my VDS VM’s into VSS. I thought I write an article and show you the steps, how this migration will be performed. In this example, I want to migrate VMs of one of my ESXi Server (10.0.7.162) from VDS into VSS.
You have a VM that is part of a port group on a distributed switch, however the network adapter is disconnected. When attempting to enable the network adapter for the VM by ticking Connected in Edit Settings, it fails and you get the error message of: Invalid Configuration for device '0'.
I’ve been looking for a while for a new more powerful homelab (for home), that scales and passes the limits I currently have. I had a great success last year with the Supermicro X9SRL-F motherboard for the Home NAS (Running NexentaStor 3.1.
VMWARE TECHNOLOGY PREVIEW LICENSE AGREEMENT Notice to User: This Technology Preview License Agreement (the “Agreement”) is a CONTRACT between you (either an individual or a single entity) (“you” or “Licensee”) and VMware, Inc.
It’s 2 a.m. and half of our reliability team is online searching for the root cause of why Netflix streaming isn’t working. None of our systems are obviously broken, but something is amiss and we’re not seeing it.
Create alternate UPN suffixes I always tell users to "log into everything with your email address." Creating and assigning alternate UPN suffixes that match this allows this to work seamlessly. Also, having publicly reachable top-level suffixes like @example.com instead of @ad.example.
This post is intended to be a primer on the distributed routing in VMware NSX for vSphere, using a basic scenario of L3 forwarding between both virtual and physical subnets. I’m not going to bore you with all of the laborious details, just the stuff that matters for the purpose of this discussion.
If you have vCenter Server in linked mode, perform this procedure on the vCenter Server that is used to install the plug-in initially, then restart the vCenter Server services on the linked vCenter Server.
A followup to my adventures of InfiniBand in the lab... and the vBrownbag Tech Talk about InfiniBand in the lab I did at VMworld 2013 in Barcelona . In this post I will cover how to install the InfiniBand drivers and various protocols in vSphere 5.5.
Almost all modern bare metal switches are described as PHYless. What does it mean, what we need to consider? We commonly interconnect network devices for distances below 100 meters with twisted pair or maybe 300 meters over OM3 multimode fiber for 10GBASE-SR.
1. Download the firmware image linked to above and the R4toR6_Prep_Addon.bin (26 KB) 2. Install the Prep add-on via Frontview e.g. via Add-Ons > Add New 3. Install the firmware image via System > Update > Local, reboot when prompted.
In this article I have described how to get started with vCloud Director by using the VCD appliance. A regular installation would require setup of RedHat Enterprise Linux or CentOS as supported OS and other components such as an Oracle or MS SQL database server.
VMware Studio 2.6 was released way back in March 2012, and surprisingly there seems to be no new update in sight. While VMware Studio technically still works, even with newer versions of ESXi and vCenter, the supported operating systems for the appliances it can build is somewhat outdated:
In the summer of 2009, I was finishing the first—and toughest—year of my doctorate. To help me get through it, while I brewed chemicals in test tubes during the day, I was also planning a crazy experiment to cheat sleep.
I’ve been working on some PowerShell scripts that I want to deploy to GFI MAX Remote Management, a monitoring tool I use in the MSP side of the business. I’m still working out the kinks, but here are some tips I’ll want to remember later. Maybe they’ll help you too.
One of the key parts of any good PowerShell script is error handling. Even in the shortest script, being able to handle errors helps to ensure that an unexpected event will not go on to wreck the system you are working on. Take the example below. Every week in our sample company (MyCompany.
If you read the previous post about what’s new in PowerCLI, you will have seen that we have been busy transitioning the core distribution model of PowerCLI cmdlets from Snapins to modules. This release is a hybrid deployment where you will still see several last PSSnapins.
VCP6-DCV Delta Exam Study Guide VCP6-DCV Resources: VMware Community Study Guides: VCP 6 Delta Beta Exam Study Material (series) from @IT_Muscle VCP6-DCV Study Guide from @davidstamen VCP6-DCV Study Guide from @dadowistef Recommended Reading: Mastering vSphere 6 VCP6
Modules - A package that contains Windows PowerShell commands int he form of functions, cmdlerts and workflows, in addition it may contain variables, aliases and providers. Modules can be written in PowerShell and/or compiled as DLLs. Snap-Ins - Are compiled cmdlets in to a DLL written in a .
Ive been searching most everywhere for a solution to this and created an incident for it which lead nowhere other than some level 1 tech saying it was basically all windows rpc service fault (which was probably in her manuscript, but still completely unhelpful).
Welcome to the wonderful world of astrophotography. I first began my journey over 5 years ago, when I saw these amazing images of earthly landscapes beneath endless starry skies posted online as part of the Astronomy Photographer of the Year competition.
Microsoft/SysInternals Process Explorer - Go to Find > Find Handle or DLL. In the "Handle or DLL substring:" text box, type the path to the file (e.g. "C:\path\to\file.txt") and click "Search". All processes which have an open handle to that file should be listed.
Windows Installer will not work under Safe Mode, this means that programs cannot be installed or uninstalled in safe mode without giving a specific command using msiexec in command prompt. If you try to uninstall programs in Safe Mode, you may receive the following message:
I’ve published a new tool that helps to quickly decode SCSI error codes displayed in vmkernel.log when something gone wrong. The tool uses an internal database to translates SCSI codes to human readable status information.
All of our production clariions are configured with two large tiered storage pools, one for LUNs on SPA and one for LUNs on SPB. When storage is created on a server, two identical LUNs are created (one in each pool) and are striped at the host level.
vCenter ships with a number of optional services including ESXi Dump Collector – Redirects kernel panic data to a central location SysLog Collector – Redirects Syslog for each ESX host to a central location Auto Deploy – Primary config for those wanting to use AutoDeploy (PXE boot with image
There are very few times that you will ever need to do this but when you do, you will have the information that you need. I frequently use this when testing HA during a greenfield implementation. I do this prior to removing a blade so I can test software failure prior to physical failure.
This article provides methods for configuring the network coredump feature in vSphere ESXi 5.x. For more information on the network coredump functionality, see Network Dump Collector in VMware vSphere (1032051).
So recently, Fluidblue, a friend of mine, officially released PassDeposit. PassDeposit is a high-security online password manager with a beautiful interface. If you’re interested in the inner workings, check out the code!
In a previous post Serial Console on OS X I wrote about how to connect a USB-Serial converter to console into Cisco router and use the ‘screen’ command. To perform a password recovery on a Cisco router you need to issue a “terminal break” character to interrupt the boot process.
VMware Integrated OpenStack, or VIO, was announced during last year VMworld in San Francisco and has been finally released today by VMware. For me this is a very special release because I have been one of the lucky internal adopters and beta testers of VIO.
In January 2011, Dell released a new Management Plugin for vCenter that allows administrators to monitor and maintain Dell 11G servers directly from the vCenter. While the plugin is not free, it does provide value.
As part of our ongoing integration with the other EMC eco system, I’m proud to announce the integration into EMC Storage Integrator (ESI), no, this is not VSI but provide a similar functionality for bare metal systems that are running windows server / Hyper-V , linux OS’s or in a future releas
I managed to finally find time recently to install the EMC PowerShell Cmdlets and have a play, this was mainly evenings and lunchtimes but when else do we get spare time in our working days ! I thought it would be useful to share my experience and show what EMC are doing in the world of PowerShell.
One of my clients was concerned about the number of virtual machines that were built with Thin provisioned disks. Before they go with the project to inflate all Thin provisioned disks (or migrate to Thick Provisioned Lazy Zeroed) they needed to know how much additional storage they would need.
After uninstalling SMTP server feature on windows 2008 R2 Server, asked for restart, so restarted the Server and after long time ( approx 1 Hour wait) server has not restarted. Ping was working fine, but RDP was not working.
Hi, to see the cause of failures with Windows 7/Server 2008 (R2) updates, we must look for error messages in the file CBS.log. Please run the Windows Explorer and go to the folder "C:\Windows\Logs\CBS\" and copy the file "CBS.
Evernote is a popular application for storing all sorts of information: images, PDFs, text, databanks of ideas and databases of things. The app/service is available on iPhone, iPad, and Mac, as well as an online interface to documents.
I know some of you were disappointed like I was that the new VCSA 6.0 HTML UI Installer is only currently supported on Windows and does not work on Mac OS X. I have been told by Product Management that this is temporary and that Mac OS X support will be coming in a future update.
Upgrade from VCSA 5.5 to VCSA 6.0 is supported scenario. In fact you can upgrade to VCSA 6.0 from 5.1U3 upwards. The upgrade process is quite straightforward, but I still do the walk through to see if any problems will arise in the lab. Upgrade from VCSA 5.5 to VCSA 6.
among the new items included in the Features list was this one: The ability to access virtual machines running on VMware vSphere, VMware ESXi, and VMware Workstation directly from VMware Fusion Pro including: Remote display, keyboard, and mouse control Ability to select media for CD, DVD, floppy de
I’ve been working on some PowerShell scripts that I want to deploy to GFI MAX Remote Management, a monitoring tool I use in the MSP side of the business. I’m still working out the kinks, but here are some tips I’ll want to remember later. Maybe they’ll help you too.
Oversubscription Ratios The most common virtual datacenter architecture consists of a group of ESXi hosts connected via a network to a centralized storage array. The storage area network design typically follows the core-to-edge topology.
This tutorial tries to allow anyone to make a pull request to any GitHub repository (for obvious reasons this one is focused on FlashPunk). Don't make a pull request without any reason or "just for testing" (of course if you improve something you should do it). This throws other people time.
A while ago I wrote this article on the topic of “one versus multiple disk groups“. The summary was that you can start with a single disk group, but that from a failure domain perspective having multiple disk groups is definitely preferred.
Early this week I published an article about the FAST presentation “A Practical Implementation of Clustered Fault Tolerant Write Acceleration in a Virtualized Environment”. Ian Forbes followed up with the question: In the question period somebody asked a good question.
I hit an interesting issue the other day when attempting to reconfigure remote syslog on some ESXi hosts. What followed was an exercise on troubleshooting remote syslog on an ESXi host and I wanted to share some tips.
One thing you might notice after deploying the new VCSA 6.0 is that it now includes 11 VMDKs. If you are like me, you are probably asking why are there so many? If you look at past releases of the VCSA, it only contained two VMDKS.
I’ve had a few readers send in questions around their iSCSI network design as it pertains to an ESXi environment. The main confusion is when to use multiple subnets for iSCSI, as opposed to VMkernel binding, based on various vendor documents and best practice guides.
A while back I was looking for an easy way to stay up to date with VMware ESXi patches. VMware provides a lot of RSS feeds that keep you updated on new blog posts, new KB articles, security advisories etc., but ...
So the openjdk in most linux distros has now been upgraded to v1.8. This has a good bug fix regarding the whole SSLv3 Poodle vulnerability. This has one problem. The Dell DRAC remote management cards installed in a lot of Dell servers relies on SSLv3 to operate.
Last week I was asked if there was an easy way to get an alert once a VM had over a certain number of snapshots, this is a frequent request as it would seam some backup products like to keep snapshoting VMs and note removing them.
In 2011 VMware introduced block based VAAI APIs as part of vSphere 4.1 release. This APIs helped improving performance of VMFS by providing offload of some of the heavy operations to the storage array.
Fancy running your own EMC Isilon, VNX, VNXe or ViPR installation in your own lab environment, to try out, trial and/or educate yourself with? If so, you’ve come to the right post! Here I provide the links to virtual instance simulators that are free to download, install, configure and use
With previous releases of the VCSA, increasing disk capacity was not a very straight forward process. Even though you could easily increase the size of the underlying VMDK while the VCSA was running, increasing the guestOS filesystem was not as seamless.
Found a great UCS health check report searching the interwebs this morning. Thank you to Jeremy Waldrop and his Unified DataCenter Stuff Blog. You can find the blog post here and the Cisco developer link here. Check out the html report screenshot!
Many of the network cartography tools and protocols we commonly use are defined through a set of standards called Request For Comments (RFCs). Surprisingly, not all of the tools we take for granted are covered by these. Take the humble traceroute for example.
When it comes to handling requests for web application servers and serving static content, the long tried and tested Nginx is an extremely popular choice nowadays. As you work with docker and containerize your applications, having Nginx serving them likewise makes sense for most situations.
A frequent question that I get asked from customers and new developers that are looking to get started with VMware Automation is what CLIs (command-line interfaces) or SDKs (programing/scripting specific languages) are available for them to use? I know it is not always easy to find out what is avai
The VMware vSphere Host storage path limit as of vSphere 5.5 is 1024 and the maximum LUNs per host is 256. As can be seen this example results in 4 paths (2 per fabric) from the ESXi host to the target storage, which is a common configuration and satisfies most workload requirements.
What's new in CPUs since the 80s and how does it affect programmers? This is a response to the following question from David Albert: My mental model of CPUs is stuck in the 1980s: basically boxes that do arithmetic, logic, bit twiddling and shifting, and loading and storing things in memory.
If you are simply building KeySweeper the GSM board, you can fit everything in a typical AC USB wall charger. I suggest looking for one that has a screw holding it together, as most others are sealed shut and requires destruction of some part of the device in order to open it.
You may have heard that the NSA can decrypt SSH at least some of the time. If you have not, then read the latest batch of Snowden documents now. All of it. This post will still be here when you finish. My goal with this post here is to make NSA analysts sad.
A couple of days ago I was asked whether I would recommend to use two logical PCIe flash devices leveraging a single physical PCIe flash device. The reason for the question was the recommendation from VMware to have two Virtual SAN disk groups instead of (just) one disk group.
1. General ECMP information 2. Static routing 3. Recommended procedure to troubleshoot RIP 4. Recommended procedure to troubleshoot OSPF 5. Recommended procedure to troubleshoot BGP S* 0.0.0.0/0 [10/0] via 192.168.183.254, wan1 S 10.0.0.0/24 [10/0] is directly connected, ssl.root R 10.0.0.
sshuttle is a nifty little transparent proxy/vpn that works by tunneling TCP traffic over SSH, or more specifically, tearing down a TCP session and reassembling the data on the other side. I started using it earlier this year, as part of my workflow using Juju and developing under OS X.
This tutorial will show you how to get started with Juju, including installing, configuring and bootstrapping a new Juju environment. Before you start you will need: Download and run the Juju windows installer.
In a Veeam Backup & Replication environment with a high number of jobs, being sure the configured settings are all the same can be a tough task. Even if there are defined procedures to create new jobs, and every IT admin has these procedures, an error can always happen. Look at this example.
Big Data Extensions Fling is a fully configured and ready to run virtual appliance that provisions and manages Google Kubernetes clusters and Mesos clusters with Docker on vSphere. It allows: When installing Big Data Extensions on vSphere 5.
Download and install the package, when the installation over a configuration program will be launched (vpxecmd.exe), follow the instruction. You need an administrative login to vCenter. With PXE Manager installed and running, open vSphere client, click on plugin and install the PXE Plugin.
FortiGates allow you to configure upto six custom DHCP options beyond the standard default gateway, DNS, NTP and domain options. We'll go through the steps to configure a DHCP server from scratch and configure the most commonly used options as well as a few custom ones.
Puppet manages your infrastructure. You describe configurations in an easy-to-read declarative language, and Puppet will bring your systems into the desired state and keep them there. Understanding Resources is fundamental to understanding how Puppet works.
Our server database is in mysql 5.1 we have 754 tables in our db.We create a table for each project. Hence the large no of tables. From past one week i have noticed a very long delay in inserts and updates to any table.
Everyone knows that RAM is so much faster than a hard disk. To illustrate, while a current SATA disk has peak transfer rates of 375 MB/s, current RAM can do a mind blowing 12,500 MB/s! Normally only the system itself makes use of this ultra fast storage, but we can also access this space directly.
Here are a couple of options for #2. You can use your own URL as your OpenID, and still use myOpenID as your OpenID server. To set this up, create an account, and add the following markup into your page's head section:
I have written several articles in the past about the awesome ovftool which is a versatile remote command-line utility for importing/exporting virtual machines in the OVF format across various VMware products. I mainly run ovftool in either the vMA or on my OSX desktop.
It is the 3rd Firewall I tries at home on my laptop, that is required for my work. Cisco ASA works in GNS3 http://blog.gns3.net/2009/12/how-to-emulate-cisco-asa/ Checkpoint Firewall works in Virtualbox too, that is a great advantage for me as it is free and really easy to use.
Foreman is a complete lifecycle management tool for physical and virtual servers. We give system administrators the power to easily automate repetitive tasks, quickly deploy applications, and proactively manage servers, on-premise or in the cloud.
Why is Juju the most amazing service orchestration tool currently available on the market, and why is it the best, easiest, and fastest way to deploy services and applications onto your cloud, manage them with ease, and re-configure them dynamically? How does it differ from conventional configur
This documentation has been created to describe best practice in deploying a production grade installation of OpenStack using current Canonical technologies, including bare metal provisioning using MAAS, service orchestration with Juju and system management with Landscape.