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.

aws.amazon.com

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Amazons’s cloud computing & web hosting service.

Amazon Aurora DSQL now integrates with Kiro powers and AI agent skills

18 February 2026 @ 6:00 pm

Today, AWS announces Amazon Aurora DSQL integration with Kiro powers and AI agent skills, enabling developers to build Aurora DSQL-backed applications faster with AI agent-assisted development. These integrations bundle the Aurora DSQL Model Context Protocol (MCP) server with development best practices, so AI agents can help you with Aurora DSQL schema design, performance optimization, and database operations out of the box. Kiro powers is a registry of curated and pre-packaged MCP servers, steering files, and agent hooks to accelerate specialized software development and deployment use cases. With the Kiro power for Aurora DSQL, agents have instant access to specialized knowledge, so developers can work confidently without any prior context, reducing trial-and-error development cycles. The power is available within the Kiro IDE for one-click installation. The

Amazon Connect Cases now supports AWS Service Quotas

18 February 2026 @ 5:00 pm

Amazon Connect Cases now supports AWS Service Quotas, giving administrators a centralized way to view applied limits, monitor utilization, and scale case workloads without hitting unexpected service constraints. You can request quota increases directly from the Service Quotas console, and eligible requests are automatically approved without manual intervention. Amazon Connect Cases is available in the following AWS Regions: US East (N. Virginia), US West (Oregon), Canada (Central), Europe (Frankfurt), Europe (London), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), and Africa (Cape Town). To learn more and get started, visit the Amazon Connect Cases webpage and documentation.

Amazon Managed Grafana now supports AWS KMS customer managed keys

18 February 2026 @ 3:00 pm

Amazon Managed Grafana now supports customer-managed keys (CMK) through AWS Key Management Service (KMS), enabling you to encrypt data stored in in your Amazon Managed Grafana workspaces with your own encryption keys. Amazon Managed Grafana is a fully managed service based on open-source Grafana that makes it easier for you to visualize and analyze your operational data at scale. Amazon Managed Grafana provides encryption at rest using AWS owned keys by default. With this launch, you now have an option to use a customer-managed key when creating an Amazon Managed Grafana workspace. This allows you to add a self-managed security layer, helping you meet your organization’s compliance and regulatory requirements. This feature is now available in all regions where Amazon Managed Grafana is generally available, except in AWS GovCloud (US) Regions. To get started with Amazon Managed Grafana, refer 

AWS Clean Rooms announces support for remote Apache Iceberg REST catalogs

18 February 2026 @ 12:00 pm

AWS Clean Rooms now supports catalog federation for remote Iceberg catalogs. This capability simplifies clean room setup by providing direct, secure access to Iceberg tables stored in Amazon S3 and cataloged in remote catalogs—without requiring table metadata replication. Organizations can now use AWS Glue catalog federation to provide direct access to their existing Iceberg REST catalog in a Clean Rooms collaboration. For example, a media publisher with data cataloged in the AWS Glue Data Catalog and an advertiser with data cataloged in a remote Iceberg catalog can analyze their collective datasets to evaluate advertising spend—without having to build ETL data pipelines or share underlying data with one another. AWS Clean Rooms helps companies and their partners easily analyze and collaborate on their collective datasets without revealing or copying one another’s un

Amazon OpenSearch Service expands support for Graviton4 (c8g,m8g & r8g ) instances

18 February 2026 @ 5:30 am

Amazon OpenSearch Service expands support for the latest generation Graviton4-based Amazon EC2 instance families. These new instance types are compute optimized (c8g), general purpose (m8g), and memory optimized (r8g, r8gd) instances. AWS Graviton4 processors provide up to 30% better performance than AWS Graviton3 processors with c8g, m8g and r8g & r8gd offering the best price performance for compute-intensive, general purpose, and memory-intensive workloads respectively. To learn more about Graviton4 improvements, please see the blog on r8g instances and the blog on c8g & m8g instances. Amazon OpenSearch Service Graviton4 instances are supported for all OpenSearch versions

Amazon OpenSearch Service now supports storage optimized i7i instances

18 February 2026 @ 4:30 am

Amazon OpenSearch Service now supports latest generation x86 based high performance Storage Optimized i7i instances. Powered by 5th generation Intel Xeon Scalable processors, I7i instances deliver up to 23% better compute performance and more than 10% better price performance over previous generation I4i instances. I7i instances have 3rd generation AWS Nitro SSDs with up to 50% better real-time storage performance, up to 50% lower storage I/O latency, and up to 60% lower storage I/O latency variability compared to I4i instances. Built on the AWS Nitro System, these instances offload CPU virtualization, storage, and networking functions to dedicated hardware and software enhancing the performance and security for your workloads. Amazon OpenSearch Service supports i7i instances in following AWS Regions US East (N. Virginia, O

Amazon EC2 R8i and R8i-flex instances are now available in Europe (Ireland) region

17 February 2026 @ 11:45 pm

Starting today, Amazon Elastic Compute Cloud (Amazon EC2) R8i and R8i-flex instances are available in the Europe (Ireland) region. These instances are powered by custom Intel Xeon 6 processors, available only on AWS, delivering the highest performance and fastest memory bandwidth among comparable Intel processors in the cloud. The R8i and R8i-flex instances offer up to 15% better price-performance, and 2.5x more memory bandwidth compared to previous generation Intel-based instances. They deliver 20% higher performance than R7i instances, with even higher gains for specific workloads. They are up to 30% faster for PostgreSQL databases, up to 60% faster for NGINX web applications, and up to 40% faster for AI deep learning recommendation models compared to R7i. R8i-flex, our first memory-optimized Flex instances, are the easiest way to get price performance benefits for a majority of memory-intensive workloads. They offer the most common sizes, from large to 16xlarge, and are

Amazon Bedrock reinforcement fine-tuning adds support for open-weight models with OpenAI-compatible APIs

17 February 2026 @ 9:17 pm

Amazon Bedrock now extends reinforcement fine-tuning (RFT) support to popular open-weight models, including OpenAI GPT-OSS and Qwen models, and introduces OpenAI-compatible fine-tuning APIs. These capabilities make it easier for developers to improve open-weight model accuracy without requiring deep machine learning expertise or large volumes of labeled data. Reinforcement fine-tuning in Amazon Bedrock automates the end-to-end customization workflow, allowing models to learn from feedback on multiple possible responses using a small set of prompts, rather than traditional large training datasets. Reinforcement fine-tuning enables customers to use smaller, faster, and more cost-effective model variants while maintaining high quality. Organizations often struggle to adapt foundation models to their unique business requirements, forcing tradeoffs between generic models with limited performance and complex, expensive customization pipelines that require specialized infrastructu

Amazon Aurora MySQL 3.12 (compatible with MySQL 8.0.44) is now generally available

17 February 2026 @ 8:00 pm

Starting today, Amazon Aurora MySQL - Compatible Edition 3 (with MySQL 8.0 compatibility) will support MySQL 8.0.44 through Aurora MySQL v3.12. In addition to many security enhancements and bug fixes, Aurora MySQL v3.12 contains several availability improvements. For more details, refer to the Aurora MySQL 3.12 and MySQL 8.0.44 release notes. To upgrade to Aurora MySQL 3.12, you can initiate a minor version upgrade manually by modifying your DB cluster, or you can enable the “Auto minor ver

Amazon Connect now includes agent time-off requests in draft schedules

17 February 2026 @ 6:50 pm

Amazon Connect now includes agent time-off requests in draft schedules, making it easier for you to view why an agent was not scheduled on a particular day or part of the day. For example, when generating schedules for next month, you can see that an agent who typically works Monday to Friday wasn't scheduled for the first week because they're on leave without needing to check the published schedules or troubleshooting configuration as to why agent was not scheduled. This launch helps schedulers quickly identify coverage gaps and adjust schedules before publishing them to agents. This feature is available in all AWS Regions where Amazon Connect agent scheduling is available. To learn more about Amazon Connect agent scheduling, click here.

networkworld.com

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Information, intelligence and insight for Network and IT Executives.

Arista hints at in-the-works telemetry tools to manage AI fabrics

18 February 2026 @ 8:32 pm

Arista Networks is extending its telemetry capabilities in response to AI-driven demand for more comprehensive network management and greater visibility across complex environments. The networking company shared early details about advanced telemetry technology that’s in the works to help its AI and cloud customers improve their monitoring and diagnostic capabilities. Telemetry already is at the core of Arista’s EOS software stack and its Cloud Vision network management and analytics platform for enterprise customers. Real-time network state telemetry and metrics are stored in one common database, SysDB, which is easily accessible through APIs and SDKs such as gNMI/OpenCon

Spirent Luma brings agentic AI to network testing, slashes triage time

18 February 2026 @ 7:14 pm

Network testing has grown more complex as environments increasingly combine cellular, network slicing and cloud-native architectures. Lab and validation teams now work across multi-vendor, multi-domain stacks, and when failures occur, resolving them can require several domain experts working in parallel. It’s a challenge that Spirent Communications—which was acquired by Keysight Technologies in October 2025—is looking to solve with Luma, its agentic AI solution for network testing and assurance. “When something fails, whether this is a manual testing or automated testing, predicting the faults and finding the root cause and providing a remediation—that is still a very painsta

ECL targets AI data centers with fuel-agnostic power platform

18 February 2026 @ 5:56 pm

Modular data center vendor ECL has announced ECL FlexGrid, a power-agnostic platform designed to support everything from training clusters to inferencing at the edge. By supporting data centers that use a variety of power sources, FlexGrid enables operators to deploy their compute gear anywhere,

Some enterprises are dropping VMware, just not all at once

18 February 2026 @ 3:43 pm

While the predicted mass exodus from VMware hasn’t materialized, many enterprises are actively reducing their VMware footprint, a new survey shows. Broadcom’s 2023 acquisition of VMware prompted forecasts that enterprises would rethink their virtualization strategies amid fears that VMware license costs would triple. So far, though, only 14% of enterprises questioned have so far seen prices double, while 59% saw prices rise by more than 25%, according to a survey commissioned by cloud cost optimization and management firm CloudBolt. However, 88% are worried about VMware

Network jobs watch: Hiring, skills and certification trends

18 February 2026 @ 2:50 pm

Network and infrastructure roles continue to shift as enterprises adopt technologies such as AI-driven network operations, multicloud networking, zero trust network access (ZTNA), and SD-WAN. Here’s a recap of some of the latest industry research, hiring s

AI likely to put a major strain on global networks—are enterprises ready?

18 February 2026 @ 10:00 am

As AI infiltrates more and more business operations, enterprise IT teams are under pressure to ensure their systems, applications, and networks are resilient enough to absorb the impact. At the same time, cloud service providers and companies supporting the global Internet infrastructure—on which enterprises heavily rely—need to make sure they can handle the AI-fueled surge in demand. If either or both of these efforts fall short, the result could include

Palo Alto to acquire Israeli startup Koi for agentic AI security

17 February 2026 @ 10:04 pm

Palo Alto Networks has entered an agreement to buy agentic endpoint security vendor Koi. Financial details were not disclosed, but some news outlets have estimated the deal is valued at around $400 million. Members of Israel’s cyber warfare and intelligence group, Unit 8200, founded Koi in 2024 to focus on building technology to protect what the company

CompTIA launches SecAI+ certification

17 February 2026 @ 9:48 pm

IT training and certification provider CompTIA this week introduced CompTIA SecAI+, a new professional certification focused on securing AI systems and applying AI tools within cybersecurity environments. CompTIA SecAI+ addresses the “urgent need for skilled professionals who can both defend against and leverage

2026 network outage report and internet health check

17 February 2026 @ 3:22 pm

ThousandEyes, a Cisco company, monitors how ISPs, cloud providers and conferencing services are handling any performance challenges and provides Network World with a weekly roundup of events that impact service delivery. Read on to see the latest analysis, and stop back next week for another update on internet and cloud traffic performance. Note: We have archived prior-year outage updates, including our reports from 2025, 2024,

Adani bets $100 billion on AI data centers as India eyes global hub status

17 February 2026 @ 11:39 am

India’s Adani Group committed $100 billion on Tuesday to build a renewable-powered, hyperscale AI data center platform across the country by 2035, as Western markets struggle to expand capacity amid mounting power shortages and regulatory resistance. The investment targets a 5-gigawatt national data center platform combining renewable generation, transmission infrastructure, and high-density AI compute capacity. “Nations that master the symmetry between energy and compute will shape the next decade,” Gautam Adani, chairman of the Adani Group, said in a

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.

Download of the day: GIMP 3.0 is FINALLY Here!

18 March 2025 @ 3:45 am

Wow! After years of hard work and countless commits, we have finally reached a huge milestone: GIMP 3.0 is officially released! I am excited as I write this and can't wait to share some incredible new features and improvements in this release. GIMP 2.10 was released in 2018, and the first development version of GIMP 3.0 came out in 2020. GIMP 3.0 released on 16/March/2025. Let us explore how to download and install GIMP 3.0, as well as the new features in this version. Love this? sudo share_on: Twitter - Facebook -

How to list upgradeable packages on FreeBSD using pkg

16 March 2025 @ 8:25 pm

See all FreeBSD related FAQ Here is a quick list of all upgradeable packages on FreeBSD using pkg command. This is equivalent to apt list --upgradable command on my Debian or Ubuntu Linux system. Love this? sudo share_on: Twitter -

Ubuntu to Explore Rust-Based “uutils” as Potential GNU Core Utilities Replacement

16 March 2025 @ 12:17 pm

In a move that has sparked significant discussion within the Ubuntu Linux fan-base and community, Canonical, the company behind Ubuntu, has announced its intention to explore the potential replacement of GNU Core Utilities with the Rust-based "uutils" project. They plan to introduce new changes in Ubuntu Linux 25.10, eventually changing it to Ubuntu version 26.04 LTS release in 2026 as Ubuntu is testing Rust 'uutils' to overhaul its core utilities potentially. Let us find out the pros and cons and what this means for you as an Ubuntu Linux user, IT pro, or developer. Love this? sudo share_on: Twitter -

How to install KSH on FreeBSD

3 March 2025 @ 11:50 pm

See all FreeBSD related FAQ Installing KSH (KornShell) on FreeBSD can be done with either FreeBSD ports or the pkg command. The ports collection will download the KSH source code, compile it, and install it on the system. The pkg method is easier, and it will download a pre-compiled binary package. Hence, it is recommended for all users. KornShell (KSH) has a long history, and many older Unix systems and scripts rely on it. As a result, KSH remains relevant for maintaining and supporting legacy infrastructure. Large enterprises, especially those with established Unix-based systems, continue to use KSH for scripting and system administration tasks. Some industries where KS

Linux Sed Tutorial: Learn Text Editing with Syntax & Examples

3 March 2025 @ 9:47 am

See all GNU/Linux related FAQ Sed is an acronym for "stream editor." A stream refers to a source or destination for bytes. In other words, sed can read its input from standard input (stdin), apply the specified edits to the stream, and automatically output the results to standard output (stdout). Sed syntax allows an input file to be specified on the command line. However, the syntax does not directly support output file specification; this can be achieved through output redirection or editing files in place while making a backup of the original copy optionally. Sed is one of the most powerful tools on Linux and Unix-like systems. Learning it is worthwhile, so in t

How to tell if FreeBSD needs a Reboot using kernel version check

23 February 2025 @ 10:07 pm

See all FreeBSD related FAQ Keeping your FreeBSD server or workstation updated is crucial for security and stability. However, after applying updates, especially kernel updates, you might wonder, "Do I need to reboot my system?" Let's simplify this process and provide a straightforward method for determining whether a reboot is necessary using the CLI, shell script, and ansible playbook. Love this? sudo share_on: Twitter

Critical Rsync Vulnerability Requires Immediate Patching on Linux and Unix systems

15 January 2025 @ 6:04 pm

Rsync is a opensource command-line tool in Linux, macOS, *BSD and Unix-like systems that synchronizes files and directories. It is a popular tool for sending or receiving files, making backups, or setting up mirrors. It minimizes data copied by transferring only the changed parts of files, making it faster and more bandwidth-efficient than traditional copying methods provided by tools like sftp or ftp-ssl. Rsync versions 3.3.0 and below has been found with SIX serious vulnerabilities. Attackers could exploit these to leak your data, corrupt your files, or even take over your system. There is a heap-based buffer overflow with a CVSS score of 9.8 that needs to be addressed on both the client and server sides of rsync package. Apart from that info leak via uninitialized stack contents defeats ASLR protection and rsync server can make client write files outside of destination directory using symbolic links. Love this? sudo share_on:

How to control the SSH multiplexing with the control commands

15 January 2025 @ 8:29 am

See all GNU/Linux related FAQ Multiplexing will boost your SSH connectivity or speed by reusing existing TCP connections to a remote host. This is useful when you frequently connect to the same server using SSH protocol for remote login, server management, using IT automation tools over SSH or even running hourly backups. However, sometimes your SSH command (client) will not respond or get hung up on the session when using multiplexing. Typically, this happens when your public IP changes (IPv4 to IPv6 changes when using DNS names), VPN issues, or firewall cuts connections. Hence, knowing SSH client control commands can save you time and boost your productivity when such gotc

ZFS Raidz Expansion Finally, Here in version 2.3.0

14 January 2025 @ 9:19 am

After years of development and testing, the ZFS raidz expansion is finally here and has been released as part of version 2.3.0. ZFS is a popular file system for Linux and FreeBSD. RAIDz is like RAID 5, which you find with hardware or Linux software raid devices. It protects your data by spreading it across multiple hard disks along with parity information. A raidz device can have single, double, or triple parity to sustain one, two, or three hard disk failures, respectively, without losing any data. Hence, expanding or adding a new HDD is a very handy feature for sysadmins in today's data-sensitive apps. Love this? sudo share_on: Twitter -

How to run Docker inside Incus containers

18 December 2024 @ 5:44 am

See all FFmpeg command releated tutorials Incus and Docker both use Linux kernel features to containerize your applications. Incus is best suited when you need system-level containers that act like traditional VMs and provide a persistent developer experience. On the other hand, Docker containers are ephemeral, i.e., temporary in nature. All files created inside Docker containers are lost when your Docker container is stopped or removed unless you stored them using volumes in different directories outside Docker. Docker is created as a disposable app deployment system. Incus containers are not typically created as disposables, and data is kept inside

heartinternet.co.uk

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Hosting packages for an initial web presence

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.

How to Enable Root Access on Your VPS Server Using Plesk

11 March 2025 @ 7:40 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 on Your VPS Server Using Plesk appeared first on Heart Internet.

Are your website fonts sending the right message?

3 February 2025 @ 10:18 am

Did you know that the fonts you use on your website can impact the way your customers perceive and interact with your brand? The post Are your website fonts sending the right message? appeared first on Heart Internet.

Black Friday at Heart Internet

28 November 2024 @ 3:27 pm

Black Friday is here, and we’re bringing you incredible savings to help your business thrive online. From 29th November 2024 to 9th December 2024, you can enjoy 15% off some... The post Black Friday at Heart Internet appeared first on Heart Internet.

13 Easy Ways to Optimise Your Website for Speed and Performance

1 October 2024 @ 2:53 pm

A slow website is like a slow waiter: it doesn’t matter how good the food is if the service is frustratingly sluggish. If your site takes too long to load,... The post 13 Easy Ways to Optimise Your Website for Speed and Performance appeared first on Heart Internet.

serverfault.com

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

wget and curl download a specific file only partially [migrated]

18 February 2026 @ 7:10 pm

Update: I just tried wget2 with --force-sitemap option. At least the length is shown now, but the file is still not fully loaded. wget2 -v --force-sitemap -S -o log/wget.log -U "${UA}" "$URL" -O ${TEMP_DIR}/sitemap_${i}.xml The Log Output [0] Downloading 'https://example.org/wp-sitemap-posts-post-3.xml' ... Saving '/tmp/example.org-GKJ8j1AWO4/sitemap_3.xml' # got header 396 bytes: :status: 200 content-type: application/xml; charset=UTF-8 content-length: 25219 date: Wed, 11 Feb 2026 10:06:41 GMT content-encoding: gzip server: Apache/2.4.66 (Debian) vary: Accept-Encoding x-cache: Hit from cloudfront via: 1.1 a76as87df6a8s7d6fs7dad76f.cloudfront.net (CloudFront) x-amz-cf-pop: MAD56-P4 x-amz-cf-id: ad76fas7d6f8as7d6f8asdas6df7s8d== age: 649218 HTTP response 200 [https://example.org/wp-sitemap-posts-post-3.xml] CloudFront Since there is some message about Hit from cloudfront in the log, does that have

Weird behaviour of network with namespaces

18 February 2026 @ 5:49 pm

I have a Linux system with three network interfaces. Two interfaces are native (eth0, eth1) on the board and one interface is connected via a USB adapter (enu1). Because of the application, I needed to separate them into three namespaces. The configuration was done the same way for all three interfaces (see the code below). The result is that when I ping the USB interface (enu1) from any eth interfaces, the ping works fine. But if I try to ping eth interfaces between each other the ping fails. The routing tables are the same for all three namespaces. Can anybody clarify why there is such a difference? The setup code: ip netns add myns0 ip netns add myns1 ip netns add myns2 ip link set eth0 netns myns0 ip link set eth1 netns myns1 ip link set enu1 netns myns2 ip netns exec myns0 ip addr add 192.168.1.10/24 dev eth0 ip netns exec myns1 ip addr add 192.168.1.11/24 dev eth1 ip netns exec myns2 ip addr add 192.168.1.12/24 dev enu1 ip netns exec m

Postfix configuration with krb5

18 February 2026 @ 4:55 pm

I have Postfix on OpenOnDemand in Amazon Linux 2 AMI, working with username and password credentials in the configuration file. Email is received properly. Now I want to implement Kerberos 5. I have Krb5 set up on the machine, using it for SSSD, and it's working. I need to implement a Kerberos authentication in Postfix. /etc/postfix/main.cf: relayhost = <SES URL> smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_use_tls = yes smtp_tls_security_level = encrypt smtp_tls_note_starttls_offer = yes smtp_tls_CAfile = /etc/ssl/certs/ca-bundle.crt sender_canonical_maps = hash:/etc/postfix/sender_canonical smtp_generic_maps = hash:/etc/postfix/generic virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf Also /etc/postfix/ldap-aliases.cf: server_host = ldap://<IP>:389 search_base = DC=<domain>,DC=local version = 3 bind

selective/partial access to sites according to IP address [closed]

18 February 2026 @ 6:12 am

DNS servers can return multiple IP addresses for a domain name. What we're observing is that some addresses yield Connection refused with a wget https://name but others accept the request. For example, this Bash script while true ; do wget https://www.google.com 2>&1 ; done | sed -n -e 's=.*|\(.*\)|:443... connected.=\1 +=p' -e 's=.*|\(.*\)|:443... failed: Connection refused.=\1 -=p' | head -111 | sort | uniq outputs IP addresses that refuse with a - after and those that accept the request, with a +. In our case the output is 142.251.150.119 - 142.251.151.119 - 142.251.152.119 + 142.251.153.119 - 142.251.154.119 - 142.251.155.119 + 142.251.156.119 - 142.251.157.119 - which shows that some IP addresses always accept the request and others always refuse it. Why would this be? Geoblocking?

Logical volume on external USB Disk not mounted during boot with error Can't lookup blockdev

17 February 2026 @ 8:51 pm

I use lvm on my raspberry pi 5 running Alpine 3.23 with internal nvme, I also have two external USB disks (WD 1Tb and 6TB). All three disks are in the same volume group vg0 with nvme: lv_root for / lvol0 for /home, and lvol1 for /var/lib 6TB HDD: one lv named lvol2, size 930GB 1TB HDD: empty Problem lvol2 on the external hdd is not mounted during boot despite being listed correctly in fstab. The other lvs mount (all three are on the nvme disk). Workaround: manually mount lvol2 after boot and restart affected services. Context fstab (relevant lines only); lvol2 has UUID c06ad240-9171-403b-8b76-71ec7d25cb46: /dev/vg0/lv_root / ext4 rw,relatime 0 1 UUID=E8F3-9212 /boot vfat rw,re

Regular delays in sent (not received) pings

17 February 2026 @ 5:42 pm

I'm debugging a very strange issue on a Proxmox server (running on Debian 12). It is connected via a 10G link (SFP+ DAC) to a switch. Another 10G link goes to another very similar server: SrvA -- 10G DAC --> Switch -- 10G DAC --> SrvB 10.5.1.2 10.5.0.102 10.5.8.2 When I ping SrvA from SrvB, all looks normal, with RTTs well below 1ms and a normal 1s interval. But if I flip the ping direction and ping SrvB from SrvA (as indicated by the arrows above), strange things happen. Most pings work just fine, also with RTT<1ms. But every about 20s, ping will just stall. However, it is not the normal the-response-is-delayed thing, but instead apparently a delay on the sending side, either before the request is even sent, or after the response is received and before the data is printed. After a few seconds, the line is printed with a normal RTT, with no gap in the sequences, no offending TTL, all normal. The only indication

Desktop icon, graphics not showing/white only, all new graphics only, if i reuse old graphics will work

17 February 2026 @ 5:14 pm

We are fond of desktop shortcuts. We create colorful ico to distinguish each of the shortcuts. But lately, all new desktop shortcuts we created are showing as only white panel, the ico graphics are missing. Yes we already tried, enabled GPO "Allow the use of remote paths in file shortcut icons" in "Computer Configuration → Administrative Templates → Windows Components → File Explorer" rebuilt icon cache screenshot showing old desktop showing ico graphics but not newly created

External connection with iSCSI + Netapp (Setting)

17 February 2026 @ 3:41 pm

I am currently trying to configure Cinder + iSCSI + NetApp in VHI (OpenStack) using the NetApp Generic Driver, with the goal of providing external storage to instances for their volumes. I have reviewed the following documentation: NetApp – OpenStack Deploy & Operations Guide OpenStack – Cinder NetApp Volume Driver Documentation Virtuozzo Hybrid Infrastructure – Admin Guide (Attaching External iSCSI Storage) When configuring Cinder, the following parameters must be defined: -volume_driver = cinder.volume.drivers.netapp.common.NetAppDriver -netapp_storage_family = ontap_cluster -netapp_storage_protocol = iscsi -netapp_vserver = openstack-vserver -netapp_server_hostname = myhostname -netapp_server_port = port -netapp_login = username -netapp_password = password However, I have several questions regarding the required configuration on the NetApp side. From what I understand, the Driver actually connects

Docker pull/push unauthenticated after successful login on fresh install > 28.1.1

17 February 2026 @ 10:21 am

When I install Docker on a new machine, I get a version that is newer than 28.1.1. E.g. recently, the ubuntu-latest vmImage in Azure Pipelines updated Docker to 29.1.5. Then, when I login to our private registry (running the registry:2 image): echo '$(DOCKER_PASSWORD)' | docker login -u=$(DOCKER_USER) --password-stdin $(DOCKER_REGISTRY), I get (as expected): "Login Succeeded". But now, when I try to pull an image: docker image pull $(DOCKER_REGISTRY)/$(DOCKER_USER)/package, I get: Error response from daemon: unknown: failed to resolve reference "//package:latest": unexpected status from HEAD request to https:///v2//package/manifests/latest: 401 Unauthorized Apparently, the Docker client "forgets" to include the Authorization header. By experiment, I found that this changed afte

Google Cloud - Change Project Name for Email Confirmations?

17 February 2026 @ 2:31 am

In the from section, on the bottom of the email confirmation, it says "Your Project-342579022 Team". Is there an easy way to change the name from Project-9859283 to name like "Support" or "Customer Support", from within my console? This way, it would read "Your Support Team". Thanks!

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