Earlier this week while trying to establish some potential bottle-necks on our VMware ESXi servers, I noticed an odd issue with the performance tab. When clicking on performance, the “Overview” tab would throw a generic browser type error about not being able to connect. Clicking on the detailed view seemed to work just fine. Doing some stumbling around, I fell upon KB1014454.
These are my links for July 23rd through August 18th:
- Behold a Buzzword is Born: High Recoverability | The Nubby SysAdmin - Wesley has another great post on high availability, or in this case, high recoverability (his new buzzword).
- ISC Diary | Ping is Bad (Sometimes) - ISC folks giving a good explanation as to why PING isn't always the best metric.
- List of Free PowerShell eBooks - A collection of free PowerShell books.
- Official: Revisions to VMware vSphere 5 Licensing — The Lone Sysadmin - Bob Plankers discusses VMWare's change of heart on their licensing plans.
- VMware Scale Up vs. Scale Out: The Big Picture — The Lone Sysadmin - Bob Plankers has another great post on VMWare pricing, and host planning. He factors in all kinds of external factors when planning out hosting VMs, and has a nice spreadsheet to give you a guide.
These are my links for July 15th through July 22nd:
- Why would you use Windows? - SysAdmin1138 Expounds -
- Balancing Your Interrupts - Jeff McReynolds has an interesting post on the impact of interrupts on processes, and how load ends up being distributed across multi-processor systems.
- GNS3 | Graphical Network Simulator -
- Automatic Monitoring with Puppet and Nagios « Mike’s Place - Mike gives a quick run down on using Puppet to automate the configuration of hosts in Nagios.
- On Android threats Spyware:Android/SndApps.A and Trojan:Android/SmsSpy.D. - F-Secure gives a run down on another shady app, listing a new form of updates as 'greyware'
These are my links for July 13th through July 15th:
- 101 Tips to MySQL Tuning and Optimization at SysAdmin Tips and Tools - Monitis has put together 101 performance tips for MySQL. Some work for general system performance tips too.
- A Look at VMware Licensing & Environment Growth — The Lone Sysadmin - Bob Plankers throws down some more examples on the new VMWare licensing schema.
- Pentagon hit by huge cyber attack - Reports from the Pentagon on compromise of systems containing sensitive information.
- LAN-to-LAN VPN on an ASA 5505 - Another great guide by Jeremy Stretch on setting up VPN tunnel on a pair of ASA 5505 devices.
- The Five Stages of VMware Licensing Grief — The Lone Sysadmin - Bob Plankers gives his point of view on the licensing changes in VMWare.
These are my links for July 4th through July 13th:
- vSphere 5.x Licensing – Awesome (if you’re rich) | Standalone Sysadmin - Matt shares his thoughts on the new VMWare v5 licensing changes.
- Make Sure Your High Availability System Isn’t Just False Bravado | The Nubby Admin -
- F5 Friday: Eliminating the Blind Spot in Your Data Center Security Strategy - Lori MacVittie talks about hidden blind spots in application security, specifically layer 7 issues, some which have shown up in big name compromises recently (CIA for example).
- The One Way That High Availability Will Help You - Wesley David (TheNubbyAdmin.com) gives another great post on High Availability, and what it covers.
- Getting started with Configuration Management -
Over the last several months, we’ve been building out a second, and third, developerment and QA environment for our teams. Part of building out the environment, I started to look at ways of automating some of the server setup. One of the things we needed to automate was the configuration of MSMQ1. A bit of looking around, and I stumbled on a post from a Microsoft engineer. He has a quick script on how to create queues with Powershell.
These are my links for June 17th through June 23rd:
- The FBI stole an Instapaper server in an unrelated raid - Instapaper Blog - The FBI take a little more than they were supposed to in a late night raid on a data center. Instapaper's read-only DB taken in the raid.
- NodeCloud - Node.js resources - New to node.js? Some good resources here to get you going, and keeping in the know.
- Two-factor SSH authentication via Google secures Linux logins | TechRepublic - Adding 2-factor authentication to PAM using Google
- Dealing with Fake Tech Support & Phone Scams - Microsoft Team bringing to light a form of social engineering, fraud, and methods to handle.
- Digital Forensics: Dropbox - An interesting post by SANs about forensics, and dropbox.
These are my links for June 9th through June 15th:
- VMware KB: vMotioning a virtual machine that resides on an NFS datastore fails with the error: General System Error Occured - Few tips on fixing issues with NFS permissions and vMotion
- Microsoft Security Bulletin Summary for June 2011 - June 2011 Security updates from Microsoft, coming in at 16 updates.
- Latest Android Malware Takes Flight With Angry Birds - Dark Reading - Another round of malware strikes the Android market
- ISC Diary - Adobe releases patches - ISC reporting on a round of patches from Adobe covering a suite of products.
- Top 10 Git Tutorials for Beginners -
While working on a SQL server cluster install, after a failed cluster setup, we started getting the error:
The SQL Server failover cluster instance name 'SQLCluster1' already exists as a server on the network
This error refused to let us proceed with installing an instance with a previously used (but removed) instance name. See how to resolve it after the jump…
These are my links for June 4th through June 7th:
- LEGO Digital Designer : Virtual Building Software -
- RSA Offers Replacement SecurID Tokens For Customers In Wake Of Lockheed Hack - Dark Reading - RSA handing out replacement tokens as the list of victims increase due to their recent compromise.
- U.N. Report Declares Internet Access a Human Right | Threat Level | Wired.com - An interesting post on the UN declaring that Internet access is now a Human right.
- Syrian Internet Shutdown - Renesys Blog - Rensys reports that Syria becomes another country blocking internet access for its citizens because of political unrest.
- Why “Bring Your Own Device” Is Seriously Flawed — The Lone Sysadmin - Bob Plankers writes a follow up article to a ZDNet post on allowing users to bring their own devices to the work place, offering some ideas why its bad not just for security.