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How to reinstall GRUB and GRUB2 on UEFI-based machines?

Note: DO NOT execute grub-install/grub2-install on the boot disk on uefi systems. CentOS Linux 7, 8, 9 The following commands will reinstall all of the files in /boot/efi/EFI/ that are required for uefi booting. # yum reinstall grub2-efi-x64 shim-x64or# rpm -ivh --replacepkgs --replacefiles grub2-efi-x64-<version>.rpm shim-x64-<version>.rpm A new boot entry may need to be added when …

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Restrict rsync access over SSH

The rsync package includes a restricted rsync script called rrsync, which is normally located in /usr/share/doc/rsync/support and allows you to restrict rsync. Ensure that the rsync package is installed before looking for the rrsync script. Yum install rsync or, dnf install rsync or you can also confirm rrsync presence by searching rsync files as follows. …

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rsync hangs when “-vv” or “-vvv” flags are used

When using -vv or -vvv, the rsync command hangs after a while. The same rsync command works perfectly with less verbosity. $ rsync -avv /src/ /dst/ [...] ^C rsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at rsync.c(701) [sender=...] rsync: [generator] write error: Broken pipe (32) The main rsync developer advises against using -vv …

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DATA SYNCRONIZATION

How to setup rsync daemon in CentOS 7 and CentOS 8

On the receiving host, change the file /etc/rsyncd.conf. For example, show a module called “backup” that stores files in the /backup directory. [receiver ~] # cat /etc/rsyncd.conf -- ..removed.. [backup] path = /backup/ comment = backup area read only = false fake super = true # Uncomment the following line if necessary. # uid = …

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nvidia a30

NVIDIA A30 GPU

NVIDIA A30 Tensor Core GPUs provide increased performance for every enterprise workload. It enables secure speedups across different workloads, including AI inference at scale and high-performance computing (HPC) applications, thanks to NVIDIA Ampere architecture Tensor Cores and Multi-Instance GPU (MIG). A30 allows an elastic data center and delivers maximum value for organizations by combining rapid …

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Exoplanets GPU

Exoplanets’ Skies: Astronomers Describe the Planets’ Climates

The atmospheres of distant planets have been described in unprecedented depth in a report published today. Scientists investigated 25 exoplanets (planets that orbit stars outside our solar system) in an effort to learn more about the universe. To be more specific, scientists looked at exoplanets with temperatures over 3,000 degrees Fahrenheit, common on hot Jupiters, …

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dedicated server

What is a Dedicated Server?

When you originally created your website, you probably chose shared hosting, like many other new site owners. It is, after all, the cheapest alternative, and budget is crucial. It’s crucial to know when to upgrade to something more robust as your website grows. There are numerous possibilities available, and you may be wondering, “What is …

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dedicated servers

Why Do You Need Dedicated Hosting?

Tired of other sites on the same server slowing down your website? Do you require additional capacity to accommodate your increasing number of website users and customers? Is your existing web hosting plan no longer meeting your needs? If this is the case, it may be time to upgrade to dedicated hosting. What is Dedicated …

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What Is NetOps?

NetOps is a network operations approach that emphasizes agility and rapid deployments. Techniques like automation, virtualization, and orchestration are used in this strategy. Why is a NetOps strategy required? To stay up with customer expectations, today’s digital organization must be more flexible than ever. Continuous network automation and validation are intended to simplify network operations …

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How to increase number of routes per router exceeding default 30 routes in Openstack Platform 15

The max_routes parameter in neutron.conf can be increased to accommodate more routes per router. # crudini --set /var/lib/config-data/puppet-generated/neutron/etc/neutron/neutron.conf DEFAULT max_routes 45 Restart the neutron_api service. # podman restart neutron_api This parameter must be set in neutron.conf after the service has been restarted, and then more than 30 routes can be added to a router. # …

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containers

What are Containers?

This guide examines the role of containers in cloud computing, highlights key benefits, and takes a look at the growing ecosystem of related technologies, including Docker, Kubernetes, Istio, and Knative. Containers are executable software units in which application code, as well as its libraries and dependencies, are packaged in standard ways so that they can …

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scareware

What is Scareware?

Scareware is a term frequently used to refer to a cyberattack tactic that scares people into visiting bogus or infected websites or downloading malicious software (malware). Scareware may manifest itself in pop-up advertisements that appear on a user’s computer or via spam email attacks. Scareware attacks are frequently launched via pop-up messages that appear on …

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