This article will provide the step by step procedure to recover the GRUB RHEL7 / CentOS7 which uses UEFI. In last article, we have demonstrated the BIOS-based system’s GRUB recovery. The newer system ships with UEFI firmware and here is the way to identify BIOS vs UEFI on Linux servers. To recover GRUB2 on RHEL7 /CentOS 7 with […]
How to Recover GRUB on RHEL 7 / CentOS 7 ?
This article will provide the step by step procedure to recover the GRUB on REHL 7 / CentOS 7. GRUB corruption / lost is one of the most common issues on Linux servers/workstations. The possible reasons for grub corruption could be due to bad disk/bug on the firmware or powered off the system abruptly. Systems ships […]
How to find Linux is under BIOS or UEFI mode ?
How would you find your Linux server booted in BIOS mode or UEFI mode? What’s the main difference between BIOS and UEFI? Servers which had shipped prior to the 2011 year have only BIOS firmware installed by default. BIOS is legacy firmware used only on X86 hardware and its 16-bit code. BIOS will take more time for […]
Safeguard VM Backup in Cloud Using – NAKIVO
Small organizations can’t afford multiple data-centers to operate. Due to the cloud revolution, small companies are operating their production servers in the cloud directly but the various factor, companies might still prefer on-premise infrastructure. In such cases, keeping the backup in the same site a not a safe. NAKIVO Backup & Replication provides a great […]
Speculative Store Bypass Disable – CVE-2018-3639 – SSBD
Google [Jann Horn (Google Project Zero) ] and Microsoft [Ken Johnson (Microsoft Security Response Center) ] found another security flaw on the modern processor architecture. An unprivileged attacker can use this flaw to bypass restrictions in order to gain read access to privileged memory that would otherwise be inaccessible. This issue has been assigned CVE-2018-3639 and is […]
How to Install Python 3 on Redhat Enterprise Linux 7.x ?
Python is available on most of the operating systems in the world. By default Redhat provides 2.7x version on Redhat Enterprise Linux 7.x. But the new development is mostly happening on Python 3.x version since 2.x is legacy. If you need python 3.x, then you need to install it using the Redhat software repository (if […]
How to Upgrade/Update Redhat Linux to Specific version ? RHSM
This article will talk about how to update / upgrade Redhat Enterprise Linux to specific minor release when you use in Red Hat Subscription Manager. It will also discuss about how to prevent YUM from updating kernel and packages but only to the security updates. In many cases , you might need to tie with specific version […]
How to Merge/Update Redhat Linux YUM Repositories ?
Redhat Linux YUM repository is useful for installing packages , updating the packages and upgrade the operating system with automatic dependency selection method. In larger environment , we need to setup the repository via HTTP to make the YUM repository to be available over network. At the same time , you might have different RHEL […]
How to Upgrade Red Hat Enterprise Linux 7.0 to 7.5 ? What’s New in RHEL 7.5
Redhat Enterprise Linux 7.5 released on April 2018. Redhat is continuously showing more interest in Microsoft Products integration to increase RHEL foot print in Azure cloud computing platform. Redhat Claims that “Red Hat Enterprise Linux 7.5 brings you enhanced interoperability, storage efficiency on-premise and in the cloud, and multi-platform support for building network-intensive applications, massively scalable data […]
Farewell to Windows vCenter Server -All New vSphere 6.7
VMware vCenter Server 6.7.0 released on April 2018 and this is going to be the last release for windows based vCenter. vCenter Server Appliance is the default deployment in vCenter Server 6.7 onwards. In this release , there are a lot of new enhancements in vCenter appliance and monitoring options have been improved. The vSphere Client […]