explainshell.com

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Match linux command-line arguments to view their help text.

stackshare.io

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Dev / Production stacks for all to see. Handy tool to see what software is trending today.

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Amazons’s cloud computing & web hosting service.

Amazon Redshift introduces new array functions for semi-structured data processing

6 March 2026 @ 4:00 pm

Amazon Redshift now supports nine new array functions for working with semi-structured data stored in the SUPER data type. The new functions include ARRAY_CONTAINS, ARRAY_DISTINCT, ARRAY_EXCEPT, ARRAY_INTERSECTION, ARRAY_POSITION, ARRAY_POSITIONS, ARRAY_SORT, ARRAY_UNION, and ARRAYS_OVERLAP, enabling you to search, compare, sort, and transform arrays directly within your SQL queries. Previously, performing these operations required writing complex custom PartiQL SQL logic. These functions simplify complex data transformations and reduce query complexity by enabling sophisticated array operations in a single SQL statement. For example, you can use ARRAY_CONTAINS and ARRAY_POSITION for element lookup, ARRAY_INTERSECTION and ARRAY_EXCEPT for set operations, or ARRAY_SORT and ARRAY_DISTINCT to organize and deduplicate data. These functions are particul

Amazon Redshift introduces reusable templates for COPY operations

6 March 2026 @ 4:00 pm

Amazon Redshift now supports templates for the COPY command, allowing you to store and reuse frequently used COPY parameters. This new feature enables you to create reusable templates that contain commonly utilized formatting parameters, eliminating the need to manually specify parameters for each COPY operation. Templates help maintain consistency across data ingestion operations that use the COPY command. They also reduce the time and effort required to execute COPY commands. You can create standardized configurations for different file types and data sources, ensuring consistent parameter usage across your teams and reducing the likelihood of errors caused by manual input. When parameters need to be updated, changes to the template automatically apply to all future uses, simplifying maintenance and improving operation

Amazon EC2 R8g instances now available in additional regions

6 March 2026 @ 1:12 am

Starting today, Amazon Elastic Compute Cloud (Amazon EC2) R8g instances are available in AWS Middle East (UAE), AWS Mexico (Central), and AWS Europe (Zurich) regions. These instances are powered by AWS Graviton4 processors and deliver up to 30% better performance compared to AWS Graviton3-based instances. Amazon EC2 R8g instances are ideal for memory-intensive workloads such as databases, in-memory caches, and real-time big data analytics. These instances are built on the AWS Nitro System, which offloads CPU virtualization, storage, and networking functions to dedicated hardware and software to enhance the performance and security of your workloads. AWS Graviton4-based Amazon EC2 instances deliver the best performance and energy efficiency for a broad range of workloads running on Amazon EC2. AWS Graviton4-based R8g instances offer larger instance sizes with up to 3x more vCPU (up to 48xlarge) and memory (up to 1.5TB) than Gra

Amazon Redshift Serverless now maintains datashare permissions during restore

5 March 2026 @ 10:45 pm

Amazon Redshift Serverless now preserves datashare permissions when you restore a snapshot to the same namespace, simplifying data sharing workflows and reducing administrative overhead. Previously, restoring a serverless namespace from a snapshot required administrators to manually re-grant datashare permissions to consumer clusters and recreate consumer databases, even when restoring to the same namespace. With this enhancement, datashare permissions are automatically maintained when you restore a snapshot to the same producer namespace, provided the datashare permission existed both when the snapshot was taken and on the current namespace. For consumer namespaces, datashare access remains unchanged after restore, eliminating the need for producer administrators to re-grant permissions. This streamlines disaster recovery and testing workflows by reducing manual configuration steps and potential errors. Amazon Redshift also provides EventBridge notifications to alert y

Multi-party approval now supports approval team baselining

5 March 2026 @ 7:00 pm

Multi-party approval (MPA) now supports MPA administrators running test approvals to confirm that their approval team is set up correctly and that approvers are active and reachable. With this new capability, customers ensure their approval teams do not become unresponsive due to natural attrition, incorrect approver selection, or reduced engagement. MPA administrators and security teams can now proactively assess their approval configurations before relying on them for sensitive operations. The baseline feature enables proactive team health management by allowing manual initiation of test approval sessions through the AWS Organizations console. Customers can verify approver availability, identify inactive team members, and maintain compliance with internal governance requirements. Key use cases include regular team responsiveness verification, recommended every 90 days by AWS using the MPA Console, onboarding validation for new approval configurations, and operation health

Amazon SageMaker Unified Studio adds light mode support for IAM-based domains

5 March 2026 @ 6:22 pm

Today, AWS announces light mode support in Amazon SageMaker Unified Studio for IAM-based domains. Customers can now configure the visual interface mode to match their preference, choosing between dark and light themes. Light mode helps improve readability in bright environments and provides a familiar visual experience for customers who prefer lighter interfaces. Combined with the existing dark mode, this update gives you full control over your development environment's appearance, improving accessibility and reducing eye strain across varying lighting conditions. In SageMaker Unified Studio settings, you can click on 'customize appearance' under your Profile settings to choose between visual modes including dark and light. The setting persists across browsers and devices. This feature is available in all regions where Amazon SageMaker Unified Studio is available. To learn more, refer to the

Database Savings Plans now supports Amazon OpenSearch Service and Amazon Neptune Analytics

5 March 2026 @ 5:29 pm

Today, AWS announces expanded coverage for Database Savings Plans, with support for Amazon OpenSearch Service and Amazon Neptune Analytics. With Database Savings Plans, you can save up to 35% in exchange for a commitment to a consistent amount of usage (measured in $/hour) over a one-year term with no upfront payment. Database Savings Plans automatically applies to eligible serverless and provisioned instance usage regardless of supported engine, instance family, size, deployment option, or AWS Region. For example, with Database Savings Plans, you can change from m7i.large.search to c8g.2xlarge.search within OpenSearch Service, or scale Neptune Analytics workloads while continuing to benefit from the discounted pricing. Database Savings Plans for Amazon OpenSearch Service and Amazon Neptune Analytics is available starting today in all AWS Regions, except Chin

AWS Elastic Beanstalk now offers AI-powered environment analysis

5 March 2026 @ 4:55 pm

AWS Elastic Beanstalk now offers AI-powered environment analysis to help you quickly identify root causes and get recommended solutions for environment health issues. When your environment experiences problems, Elastic Beanstalk collects recent events, instance health, and logs from your environment and sends them to Amazon Bedrock for analysis. This feature is designed for developers and operations teams who need to diagnose and resolve environment issues faster without manually reviewing logs and events. You can request an AI analysis directly from the Elastic Beanstalk console using the AI Analysis button when your environment's health status is Warning, Degraded, or Severe. You can also use the AWS CLI with the RequestEnvironmentInfo and RetrieveEnvironmentInfo API operations. The analysis provides step-by-step troubleshooting recommendations tailored to your environment's current state, helping you reduce mean time to resolution. AI-powered environment analysis

Amazon EC2 I8ge instances now generally available in Europe (Ireland) AWS region.

5 March 2026 @ 4:00 pm

Amazon Web Services (AWS) announces the availability of Amazon EC2 I8ge instances in Europe (Ireland) AWS region.  I8ge instances are powered by AWS Graviton4 processors to deliver up to 60% better compute performance compared to previous generation Graviton2-based storage optimized Amazon EC2 instances. I8ge instances use the latest third generation AWS Nitro SSDs, local NVMe storage that deliver up to 55% better real-time storage performance per TB while offering up to 60% lower storage I/O latency and up to 75% lower storage I/O latency variability compared to previous generation Im4gn instances. I8ge instances are high-density storage-optimized instances, for workloads that demand rapid local storage with high random read/write performance and consistently low latency for accessing large data sets. These versatile instances are offered in eleven different sizes including 2 metal sizes, providing flexibility to match customers computational needs. They delive

AWS Shield network security director findings are now available in AWS Security Hub

5 March 2026 @ 4:00 pm

Today, AWS Shield announces findings from network security director, currently in preview, are now available in AWS Security Hub. AWS Shield network security director identifies missing or misconfigured network security services like AWS WAF, VPC security groups, and VPC network access control lists (ACLs) in your AWS Organization and provides remediation recommendations. Network security director findings now also appear in the Inventory section of the Security Hub console. With network security director, you can continuously analyze your network across accounts or organizational units in your AWS Organization, and receive findings highlighting missing or misconfigured network security services per AWS best practices. The severity of each finding is determined based on a combination of the misconfiguration identified and the network topology of the resource the finding is associated with. To learn more, visit the overvie

networkworld.com

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Information, intelligence and insight for Network and IT Executives.

Cisco: Latest news and insights

9 March 2026 @ 1:46 pm

Cisco (Nasdaq:CSCO) is the dominant vendor in enterprise networking, and under CEO Chuck Robbins, it continues to shake things up.  Cisco is focusing on strategic AI initiatives and partnerships across various regions to build and power AI data centers and ecosystems. This includes collaborations with major players like BlackRock, Global Infrastructure Partners, Microsoft and Nvidia to drive investment and scale AI infrastructure. The networking giant continue

Cisco: LPO not a panacea but plays strategic role in AI networks

6 March 2026 @ 5:53 pm

Cisco has committed to developing Linear Pluggable Optics (LPO) options for its Silicon One family to address the growing need for lower power, high-throughput networking for AI. Cisco recently ratcheted up the speed of its Silicon One portfolio with the introduction of a 102.4 Terabit/sec G300 chip and switch family. As part of that launch, Cisco rolled out its first commercially available 800G LPO modules for its Nexus 9000 series switches

AI transforms ‘dangling DNS’ into automated data exfiltration pipeline

6 March 2026 @ 10:00 am

When a company shuts down a testing environment, AWS bucket, an online app, or a SaaS instance, the DNS entry can sometimes remain active long after the fact, a zombie pointer to a resource that no longer exists. And nature might abhor a vacuum, but hackers love them. In the past, they’d jump on an opportunity to take over the old infrastructure in order to, say, lend credibility to a phishing campaign. “This is not an AI-born vulnerability,” says Constellation Research analyst Chirag Mehta. “It is a long-running cloud hygiene issue.” Today, so-called dangling DNS instances can also lend credibility to a new kind

Data center new builds diminish even as demand rises

5 March 2026 @ 9:24 pm

New findings from commercial real estate services and investment firm CBRE Group reveal a dichotomy in the vibrant data center market across North America. At the same time as the sector set records in 2025 for overall activity, new facilities were not being built, not because demand was slowing, but due to the difficulty in obtaining construction permits and power. CBRE also observed that community involvement is becoming a key driver in approvals. “The size and scale of new development projects are now reaching 100+ acres for a greenfield campus,” noted Pat Lynch, executive managing director, CBRE Data Center Solutions.

Cisco issues emergency patches for critical firewall vulnerabilities

5 March 2026 @ 5:49 pm

Cisco has handed security teams one of the largest ever patching workloads affecting its firewall products, including fixes for two ‘perfect 10’ vulnerabilities in the company’s Secure Firewall Management Center (FMC) Software. Overall, the March 4 release, the first of its semiannual firewall updates for 2026, addresses 25 security advisories covering 48 individual CVEs. [ Related: More Cisco news an

Lack of regulatory action on hyperscaler dominance prompts inquiry chair to quit

5 March 2026 @ 12:08 pm

Delays in regulatory action to deal with imbalances in the market for cloud services has prompted the resignation of the chair of an inquiry into the market. Companies deploying cloud services are being hampered by the dominance of Microsoft Azure and Amazon Web Services, a situation exacerbated by the glacial pace in which the UK’s Competition and Markets Authority (CMA) is reacting to the recommendations of its own inquiry into the cloud industry. Now the chair of that inquiry, Kip Meek, has quit the role in protest at the lack of action.

Digital sovereignty options for on-prem deployments

5 March 2026 @ 10:00 am

France made headlines recently when it announced it would ditch Microsoft Teams and Zoom for government use in favor of the French-made Visio platform. The decision followed a similar move by Austria’s Ministry of Economy, Energy, and Tourism, which rejected Teams in favor of an open-source collaboration suite running on the Ministry’s own servers. A large factor underlying both decisions is

Cato Networks brings adaptive threat defense to SASE

4 March 2026 @ 7:12 pm

Cato Networks has introduced what it calls an auto-adaptive threat prevention engine, designed to stop multi-stage attacks before they cause damage or disruption. Cato Dynamic Prevention is integrated into the vendor’s secure access service edge (SASE) platform. It addresses attacks that unfold gradually and appear harmless when viewed as isolated events. Rather than relying solely on point-in-time inspection or static rules, the

AMD: Latest news and insights

4 March 2026 @ 4:37 pm

More processor coverage on Network World:Intel news and insights | Nvidia news and insights AMD continues to make gains in processor and data center markets thanks largely to its EPYC processors, which has chipped away at Intel’s long-standing dominance.   According to AMD’s Q1 2025 results, revenue increased 36% over the same quarter in 2024

AWS Middle East outage: a reminder not to rely on cloud as disaster recovery plan

4 March 2026 @ 1:49 am

AWS customers based in the Middle East (ME) are struggling to recover services following drone attacks on the cloud company’s ME data centers on March 1. Two availability zones in the UAE and one in Bahrain were impacted. The company has been providing regular updates as it works to restore operations, but has advised customers with workloads running in the Middle East to take action now to migrate those workloads to alternate AWS Regions. “Customers should enact their disaster recovery (DR) plans, recover from remote backups stored in other regions, and update their applications to d

forensicswiki.org

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Computer forensic tools and techniques used by investigators

cyberciti.biz

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online community of new and seasoned Linux / Unix sysadmins.

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heartinternet.co.uk

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Hosting packages for an initial web presence

Hosting VPS Linux vs Windows VPS

9 March 2026 @ 3:03 pm

The post Hosting VPS Linux vs Windows VPS appeared first on Heart Internet.

Domain Name Transfer Checklist: Everything You Need to Know

3 March 2026 @ 2:56 pm

The post Domain Name Transfer Checklist: Everything You Need to Know appeared first on Heart Internet.

Heart Internet Win Gapstars Innovation Award 2026

23 February 2026 @ 11:57 am

We’re incredibly proud to celebrate our Site Reliability Engineering team, who have won the Gapstars Innovation Award for their outstanding work improving platform stability, security, and visibility across our shared... The post Heart Internet Win Gapstars Innovation Award 2026 appeared first on Heart Internet.

A/B Testing Explained: A Practical Guide To Better Results | Part 1

20 February 2026 @ 8:32 am

If you want to improve your website you probably need to do A/B testing, otherwise known as split testing. Instead of guessing, A/B testing allows you to experiment more scientifically.... The post A/B Testing Explained: A Practical Guide To Better Results | Part 1 appeared first on Heart Internet.

How to enable two-factor authentication (2FA) on your Heart Internet account

28 January 2026 @ 12:37 pm

Account security matters, and switching on two-factor authentication (2FA) is a quick win. 2FA adds a second check during the sign-in process, so even if someone compromises your password, they still can’t get in.  To enable 2FA:  Step 1: Open your... The post How to enable two-factor authentication (2FA) on your Heart Internet account appeared first on Heart Internet.

How to Choose the Perfect Domain Name for Your Business

9 July 2025 @ 9:30 am

Get Your Name Right – The Internet Never Forgets Choosing a domain name might sound simple – until you realise it’s the online equivalent of naming your child. No pressure.... The post How to Choose the Perfect Domain Name for Your Business appeared first on Heart Internet.

What is a VPS? And is it Time You Got One?

25 June 2025 @ 9:30 am

Discover what a VPS server is, how VPS hosting works, and why it’s ideal for small businesses. Learn the benefits and explore VPS plans with Heart Internet. The post What is a VPS? And is it Time You Got One? appeared first on Heart Internet.

We’re Now Certified by the Green Web Foundation

11 June 2025 @ 9:30 am

💚 Hosting that works hard, treads lightly.   Big news: Heart Internet is now officially listed with the Green Web Foundation. That means our hosting services are recognised as being... The post We’re Now Certified by the Green Web Foundation appeared first on Heart Internet.

What is Web Hosting and Why Does Your Business Need It?

6 May 2025 @ 4:54 pm

Without web hosting, your website would not be visible or accessible to users! It is crucial to host your website with a website hosting service to ensure that your business... The post What is Web Hosting and Why Does Your Business Need It? appeared first on Heart Internet.

How to Enable Root Access via SSH on Your VPS for Migration using Plesk

11 March 2025 @ 7:41 am

If you get one of the following messages from the Plesk migrator you should check that you are using root as the username along with the Plesk admin password. “The... The post How to Enable Root Access via SSH on Your VPS for Migration using Plesk appeared first on Heart Internet.

serverfault.com

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Common Server issues – FAQs and answers from those in the know

no OSPF hello no matter what

9 March 2026 @ 8:36 pm

I want to configure OSPF on mikrotik, and I’m facing a problem, that I can not overcome. My mikrotik with ros7.12 does not send any ospf hello, no matter what config is. I did not find official mikrotik OSPF document helping, cause more than half of it just explaning how protocols works. There is L3 bidirectionally connectivity between nodes over p2p /31 link, even loopback address of other node is reachable. Other node sends hello, and I can see those in torch. Worth mentioning, Nokia and Cisco establish neigboring with no problem and everythig works. So i think problem is in mikrotik here, but at this moment, I have no clue where to look. Here is my OSPF config: /routing ospf instance add disabled=no name=ospf-instance-1 redistribute=connected router-id=192.0.0.2 /routing ospf area add disabled=no instance=ospf-instance-1 name=ospf-area-1 /routing ospf interface-template add area=ospf-area-1 disabled=no interfaces=ether4 networks=10.0.

Why do mail test websites say i have an invalid DKIM? [closed]

9 March 2026 @ 11:43 am

I'm dealing with a mess of a mail server that has roundcube with opendkim. When im using roundcube to send emails to other providers the letters are arriving just fine, they arent even send to the spam box despite (according to the mail testing websites) me having issues with DKIM. Testing websites do not report any other issues however. All the dns records seem to be correct(both domain provider and cloudflare), opendkim-testkey doesnt error, dig returns DKIM record, correct selector is chosen in the web panel settings... i have even restarted opendkim to be sure. Now the weird part is that it wasnt a problem before that, i vaguely remember setting up DKIM on this server before and everything working perfectly fine and testing websites like mail-tester reporting a perfect score. Since that the server pretty much didnt change at all(it doesnt have scheduled updates even) besides two things: i've recebtly closed all the telnet (yes, really) ports, updated the web panel

Using ipmitool chassis power option causes actions on local server, not the remote server

9 March 2026 @ 10:53 am

For a long time I have used ipmitool on servers fitted with BMC hardware such as ILO, iDRAC, etc to access other similar servers over a management LAN but I have found that commands such as: ipmitool -U root -H remote-system-ilo -I open chassis power cycle actually power-cycles the local server I'm using, not the remote one! What am I doing wrong? I have tried using ipmitool from a Linux desktop PC that lacks any kind of BMC hardware but find that the ipmi_si module won't load if no BMC hardware exists in the PC, although ipmitool does work if I use options such as -I lanplus where the remote system supports this protocol. Must my local PC have BMC capability for me to fully use ipmitool? Thanks, Andy

How to log user activity with Azure AD?

9 March 2026 @ 10:50 am

In the Azure AD ecosystem, what tools or functionality can be used to query and log user activity statuses at regular intervals? In my prior job the IT team had an Azure/AD "view" (or equivalent) that allowed Reporting Analysts to pull down user activity. The data was in 5 minute intervals, and would tell us if a PC was active, idle, or locked in that period. The idle status was based on the lack of keyboard and mouse activity. The company was fairly invested in the Azure environment, I remember them using Intune and Endpoint Manager, and am sure there were other Microsoft products but cannot recall sorry.

Is it possible to fake traffic so that AWS treats it as coming from a particular EC2 security group?

9 March 2026 @ 8:50 am

I am introducing an AWS EC2 Security Group that allows traffic originating from another security group. Can a hacker create traffic from "another" security group to access my instance? https://docs.aws.amazon.com/vpc/latest/userguide/security-group-rules.html#security-group-referencing UPD: removed IP Spoofing reference to avoid confusion

Libvirt managed QEMU microvm

7 March 2026 @ 12:25 pm

I've been searching for an answer to this for a couple of hours but could find anything but a message about capabilities deep down in libvirt-devel archive mentionning 'microvm-machine'... Sadly not enough for my skill and knowledge to help me answer the ultimate question: Can I manage QEMU microvms with libvirt and, ideally, how? My faithfull but aging lappy thanks you in advance for relieving it from the load of those crowded cloud native labs 🤗 PS: alternative solution suggestion(s) also welcomed

How to get Calico CNI working if I already removed CNI (flannel)

7 March 2026 @ 9:48 am

I am trying to familiarize myself with Kubernetes internals so I started with a simple 1-node setup through nixos's roles. It, by default, installs flannel CNI plugin. The thing I wanted to do is remove flannel CNI install calico CNI, eBPF variant ...in order to see the impact of having eBPF-based CNI to the k8s's iptables rules. I uninstalled flannel using nixos's configuration option: services.kubernetes.flannel.enable = false; then nixos-rebuild switch then reboot just in case. Then I followed this guide (https://docs.tigera.io/calico/latest/getting-started/kubernetes/self-managed-onprem/onpremises#install-calico) to install Calico to the cluster. Now, it seems, th

Why does a SQL Server stored procedure generate different execution plans depending on the parameter value?

6 March 2026 @ 9:16 pm

I am testing query execution plan behavior in Microsoft SQL Server 2022 Developer Edition and SSMS 20.2.1 Table: CREATE TABLE Orders ( OrderID INT, CustomerID INT, OrderAmount INT ); Index: CREATE NONCLUSTERED INDEX IX_Orders_CustomerID ON Orders(CustomerID); Stored procedure: CREATE PROCEDURE GetOrders @CustomerID INT AS BEGIN SELECT * FROM Orders WHERE CustomerID = @CustomerID; END The data distribution in Orders is extremely skewed: CustomerID = 1 --> 6,827,769 rows CustomerID = 2 --> 3 rows CustomerID = 3 --> 0 rows Running the procedure with different parameter values results in very different execution plans and performance. So, what mechanism in SQL Server causes the optimizer to choose different plans for the same stored procedure depending on the parameter value?

Automatic failover for long-lived TCP connections on Kubernetes

6 March 2026 @ 3:38 pm

I have a "dumb" client that establishes a long-lived TCP connection to a pod on Kubernetes cluster (AWS EKS), front ended with AWS NLB. The problem is when a pod is redeployed, the connection breaks and needs to be reestablished manually. I am looking for a solution "moving" the TCP connection to the new pod without reestablishing the connection on the client. I tried to use Nginx Ingress Controller but it didn't work. I am thinking about testing solutions like HAProxy or Istio, but I am not sure they provide this functionality.

Error: unable to connect to terminal server, RDS broker not distributing

6 March 2026 @ 12:26 pm

I have a RDS terminal farm, broker, license, gateway. Connecting to the RDS broker results in this fault. The Remote Desktop Connection Broker client failed to redirect user domain\user. Error: NULL RDS Broker gets an error: Unable to connect to the host through the broker.

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