We won't open America if we claim that virtual machines on new processors are always more efficient than equipment on older generation processors. What's more interesting is that when analyzing systems that seem very similar in technical specifications, the results can be quite different. We confirmed this when we tested Intel processors in our cloud to see which ones provide the greatest […]
Details have been published regarding a vulnerability (CVE-2020-9484) in Apache Tomcat, the open-source implementation of Java Servlet technologies, JavaServer Pages, Java Expression Language, and Java WebSocket. The issue allows for code execution on the server through sending a specially crafted request. The vulnerability has been fixed in releases Apache Tomcat 10.0.0-M5, 9.0.35, 8.5.55, and 7.0.104. For successful exploitation of the vulnerability, the attacker must be able to control the contents and […]
In this article, we will look at a number of optional yet useful settings: using additional names for the manager; connecting authentication via Active Directory; Multipathing; power management; replacing SSL certificates; archiving; host management interface (cockpit); VLANs; HPE-specific features. This article is a continuation, see oVirt in 2 hours Part 1 and part 2. Articles Introduction Installing the manager (ovirt-engine) and […]
Introduction The open source project oVirt is a free enterprise-level virtualization platform. Skimming through Habr, I found that oVirt is not covered here as widely as it deserves. oVirt is actually the upstream for the commercial system Red Hat Virtualization (RHV, previously RHEV), growing under the wing of Red Hat. To avoid confusion, this is not the same as CentOS vs RHEL, the model […]
This article is the next in the oVirt series, starting here. Articles Introduction Installing the manager (ovirt-engine) and hypervisors (hosts) — We are here Additional settings Now, let's look at the issues of the primary installation of the ovirt-engine and ovirt-host components. For more details, the installation processes can always be viewed in the documentation. Content Installing ovirt-engine Installing ovirt-host Adding a node to oVirtN Configuring the network interface Configuring FC […]
An update for the Solaris 11.4 SRU 21 (Support Repository Update) operating system has been published, offering a series of fixes and enhancements for the Solaris 11.4 branch. To install the updates provided in the update, simply execute the 'pkg update' command. The new release includes: A new package driver/network/ethernet/mlxne with drivers for supporting Mellanox ConnectX-4 and ConnectX-5 100Gb Ethernet adapters; Updated printing subsystem components: […]
A group of researchers from Tel Aviv University and the Interdisciplinary Center in Herzliya (Israel) has developed a new NXNSAttack (PDF) method, allowing any DNS resolvers to be used as traffic amplifiers, achieving an amplification factor of up to 1621 times in the number of packets (for every query sent to the resolver, 1621 queries can be sent to the victim's server) and up to 163 times in traffic. The issue […]
We are incredibly proud to announce the release of Windows Terminal 1.0! Windows Terminal has come a long way since its announcement at Microsoft Build 2019. As always, you can download Windows Terminal from the Microsoft Store or from the releases page on GitHub. Windows Terminal will have monthly updates starting from July 2020. Windows Terminal […]
Google has released version 83 of the Chrome web browser. At the same time, a stable release of the open-source Chromium project, which underpins Chrome, is also available. The Chrome browser features the use of Google logos, a crash notification system, the ability to download the Flash module on demand, support for playing protected video content (DRM), an automatic update installation system, and the transmission of RLZ parameters during searches. Due to the developers' transition to […]
Proxmox is a commercial company offering specialized products based on Debian. The company has released Proxmox version 6.2, based on Debian 10.4 "Buster." New features include: Linux kernel 5.4, QEMU 5.0, LXC 4.0, ZFS 0.8.3, and Ceph 14.2.9 (Nautilus). Built-in domain validation for Let’s Encrypt certificates is supported. Full support for up to eight Corosync network channels. Zstandard support for backups and […]
I want to talk about a search utility that makes life much easier. When I access a server and need to search for something, the first thing I check is whether ack is installed. This utility is a great replacement for grep, and in some ways also for find and wc. Why not grep? Ack has more pleasant settings out of the box and is more user-friendly […]
Security researchers from Qualys have demonstrated the exploitation of a vulnerability in the qmail mail server, known since 2005 (CVE-2005-1513), which remained unfixed because the author of qmail claimed that creating a working exploit that could be used to attack systems in default configuration was unrealistic. At Qualys, they managed to prepare an exploit that contradicts this assumption and allows initiating […]
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