Monthly Archive: August 2019

VMware Ports and Protocols 0

Virtualization

VMware’s Tool for Find VMware’s Products Ports and Protocols

VMware’s products needs to communicate together or communicate with other components of services via network, administrators must know that components will communicate via which ports and protocols. VMware has provided a tool to find port and protocol of popular VMware’s products which called ” VMware Ports and Protocols”. Currently, you can find ports and protocols which the below products used: vSphere vSAN NSX for vSphere vRealize Network Insight vRealize Operations Manager vRealize Automation Note: The recent versions of the mentioned products and not out of support products. External Links VMware Ports and Protocols

Linux Distribution 0

News

New Release, Knoppix 8.6

One of my firsts Linux experiences was Knoppix, I forget that what was exact version but I guess, it was Knoppix 3.1 or older version. After 17 years, I am still one of fans. Knoppix is one of most popular and firsts live Linux distributions on CD/DVD. What’s New in Knoppix 8.6? Version 8.6 of KNOPPIX is based on Debian/stable (buster), with some packages from Debian/testing and unstable (sid) for newer graphics drivers or desktop software packages. It uses Linux kernel 5.2.5 and Xorg 7.7 (core 1.20.4) for supporting current computer hardware. Changes in Knoppix 8.6: Updated Kernel and System software (Debian buster+sid), LXDE, the lightweight Knoppix standard desktop including file manager pcmanfm 1.3.1. Gnome 3 (Bootoption knoppix64 desktop=gnome). KDE 5 (knoppix64 desktop=kde). Accessible Adriane Audio Desktop. Wine 4.0 prerelease for directly installing and running Windows applications on Linux, also Windows 10. Qemu-kvm 3.1 as scriptable virtualization solution. Privacy-enhanced tor browser, upgradeable and startable via the Knoppix-menu. Web-Browser Chromium 76.0.3809.87, Firefox 68.0.1 with ad blocker Ublock Origin and Noscript. Libre Office 6.3.0-rc2, Gimp 2.10.8. Maths/Algebra-Software for teachers, solving equations etc.: Maxima 5.42.1 with direct integration of Maxima sessions into Texmacs, creating documentation directly during live lessions. 3D Productivity-Software Blender 2.79.b, Freecad 0.18, Meshlab 1.3.2, Open Scad...

cockpit system 0

Free Tools

Cockpit – Powerful Monitoring and Administration Tool

Monitoring and administration on Linux servers are not too easy, you need to some advanced experiences to managing Linux servers properly. Also most Linux advanced administrators using command-line to doing their tasks, using command-line to configuring, monitoring and troubleshooting is not too easy as well. There is some useful tools for managing Linux servers via web based portal. Cockpit is one of most powerful web based management for Linux system. Cockpit Supported OS Cockpit will install on the below Linux systems and it can manage those distributions: Fedora Red Hat Enterprise Linux CentOS Debian Ubuntu Project Atomic Clear Linux Arch Linux Cockpit is included in the Red Hat Enterprise Linux Extras repository in versions 7.1 and later. Cockpit is included in Ubuntu 17.04 and later, and available as an official backport for 16.04 LTS and later. Backports are enabled by default, but if you customized apt sources you might need to enable them manually. Cockpit packages are included in Oracle Linux 7.x (It’s not mentioned on official website). I have installed Cockpit on CentOS. Cockpit Installation Note: Some Cockpit features may be depended to Linux distribution and version. Fedora Cockpit comes installed by default in Fedora Server. To install Cockpit on other variants of Fedora use...

HPE Power 3

Virtualization / Server Hardware

HPE G10 Servers: Best and Optimized Setting for VMware vSphere

Optimizing HPE server configuration is always one of biggest challenges for virtual environments administrators. The administrators always trying to provide best performance by changing configurations on hypervisor, virtual machines or other components or virtual infrastructure. There are best practices which published by server vendors to achieve best performance on their server platform. Server hardware is one most important component in every environment, server provides main power and resource: Computing Resources. Processor and memory and other server’s component made to work almost like as human brain. Some Important Things! Human brain needs consumes about 20 percent of the body’s energy. Consume more energy is equal to more heat in human body. Server components needs energy and cooling, like human body. Energy and cooling needs money. So there is a challenge to keep balance between performance and cost of services in any IT environments. What’s Important About Server Hardware? In fact, processors and cooling system consume most power which provided by power modules. Don’t think about single server, think about hundreds of servers and thousands processors, thousand x 200W! (At least). Best performance has more cost for any environment also needs more maintenance. What’s Best Practices? Best practices are depended to workload...

HPE 0

Server Hardware / How To

Change Administrator’s Password for All HPE C7000 Device Bays

HPE C7000 Blade System using Onboard Administrator (OA) KVM module to manage devices and interconnects in chassis. To manage devices directly, OA will redirect to iLO of each device. OA use single sign-on to logon to iLO administration web page. But each server has own administrator user and the user has default password, so if iLO addresses are reachable via network, it’s better to change default password. Think about two or more C7000 chassis with half high blade servers, changing password on 64 servers would be difficult! Onboard Administrator has builtin tool to configure device bays iLO. HPONCFG can change almost all iLO configuration. HPONCFG is also available for different systems and operating systems. Configuration should be as XML format. Example 1: Change Administrator’s Password The below code will change administrator’s password to what you want, just replace “Y0ur Passw0rd” with your password. I’ve tested it on iLO5 and BL460c G10. If you have empty bays, you should run it again after installing new bade server. Also to run on single bay, just replace “all” with bay number. The code must be run via OA, so you should open SSH session to OA module of each C7000 chassis. Example 2:...

npar 1 1

Server Hardware / Virtualization

Using Network Partitioning (NPAR) in VMware ESXi

Data Center design is changing year by year, before virtualization all servers was physical and data centers were full of devices and cables. Virtualization helped to make data centers smaller and consolidate different workloads in same hardware. Hardware technologies are also helping to achieve this goal. Network Partitioning (NPAR) is one of hardware technologies which helping to reduce cabling, switch devices and use all I/O capacity in data centers. What’s Network Partitioning (NPAR)? NPAR is an operating system and switch agnostic technology that allows customers to reduce the number of I/O adapters required to support different application workloads. Traditional best practices require separate LAN or SAN connections for different aspects of application workloads. Converged Network Adapters already support widely used SAN protocols like Fibre Channel over Ethernet (FCoE) and iSCSI, administrators can already reduce the number of adapters needed for separate protocols, including separate Fibre Channel and Ethernet adapters. With NPAR, these adapters can now partition their network bandwidth further into multiple virtual connections, making one dual-port adapter appear as eight adapters to the operating system for use by the applications. This greatly simplifies the physical connectivity to the server, reduces implementation time, and lowers the acquisition cost of the...

HPE Fast Fault Tolerance 2

Server Hardware

HPE Fast Fault Tolerance vs HPE Advanced ECC Support – Choosing Best Technology!

Memory failure is one of reasons that can be cause of server crash and impact on service availability and performance. Think about a service which including multiple servers, server could be crashed cause of single memory module failure or uncorrectable memory error. Regarding to preventing memory impact of memory errors on services, HPE provides RAS technologies. RAS (reliability, availability, and serviceability) technologies are including: In this post, we’ll compare HPE Fast Fault Tolerance and HPE Advanced ECC Support. Before comparison, let’s find that why we need to memory RAS? Why Memory RAS is needed? Server uptime is still one of the most critical aspects of data center maintenance. Unfortunately, servers can run into trouble from time to time due to software issues, power outages, or memory errors. The three major categories of memory errors we track and manage include correctable errors, uncorrectable errors, and recoverable errors. The determination of which errors are correctable and uncorrectable is completely dependent on the capability of the memory controller. Correctable Errors Correctable errors are, by definition, errors that can be detected and corrected by the chipset. Correctable errors are generally single-bit errors. All HPE servers are capable of detecting and correcting single-bit errors and...