Match linux command-line arguments to view their help text.
Tag: SysAdmin
system administrator related links
stackshare.io
Dev / Production stacks for all to see. Handy tool to see what software is trending today.
aws.amazon.com
Amazons’s cloud computing & web hosting service.
Amazon CloudWatch RUM adds support for Interaction to Next Paint (INP) Web Vital
9 May 2025 @ 9:59 pm
Today, CloudWatch RUM, a real-time monitoring service that visualizes and analyzes user interactions with web applications, announces support for Interaction to Next Paint (INP) web vital monitoring. This crucial metric would help customers measure the latency of a page's response to user interactions, offering insights into the end-user experience of their web application. INP is a metric that assesses a page's overall responsiveness to user interactions by observing the latency of all click, tap, and keyboard interactions that occur throughout the lifespan of a user's visit to a page. The final INP value is the longest interaction observed, ignoring outliers. This new metric joins the existing set of core web vitals tracked by CloudWatch RUM. The time series graph for INP allows customers to instantly assess whether page responsiveness is positive, tolerable, or frustrating based on a percentile aggregate of the metric. Furthermore, customers can click on specific data po
Amazon Connect now supports audio optimization for Omnissa cloud desktops
9 May 2025 @ 5:45 pm
Amazon Connect now makes it easier to deliver high-quality voice experiences in Omnissa Virtual Desktop Infrastructure (VDI) environments. Amazon Connect automatically optimizes audio by redirecting media from your agent’s local desktop to Connect, simplifying the agent experience and improving audio quality by reducing network hops. Agents can simply log into their Omnissa remote desktop application (e.g., Omnissa Horizon) and start accepting calls using your custom agent user interface (i.e., custom Contact Control Panel) using APIs in the Amazon Connect open source JavaScript libraries. These new features are available in all AWS regions where Amazon Connect is offered. To learn more, please see the
Amazon VPC Reachability Analyzer now supports resource exclusion
9 May 2025 @ 5:00 pm
Amazon VPC Reachability Analyzer now supports the ability to exclude network resources when analyzing reachability between a source and destination, providing you greater flexibility to run reachability analyses. VPC Reachability Analyzer is a configuration analysis feature that enables you to check network reachability between a source resource and a destination resource in your virtual private clouds (VPCs). With this launch, you can easily identify an alternative traffic path in your network. For example, if you want to identify any path from your internet gateway to Elastic Network Interfaces (ENIs) that is not passing through the network firewall for inspection, you can specify Network Firewall under resource exclusion and run the reachability analysis. If the analysis returns a reachable path, you know there is an alternative path in your network and ca
Amazon EC2 X2idn instances now available in AWS Asia Pacific (Melbourne) region
9 May 2025 @ 5:00 pm
Starting today, memory-optimized Amazon Compute Cloud (Amazon EC2) X2idn instances are available in AWS Asia Pacific (Melbourne) region. These instances, powered by 3rd generation Intel Xeon Scalable Processors and built with AWS Nitro System, are designed for memory-intensive workloads. They deliver improvements in performance, price performance, and cost per GiB of memory compared to previous generation X1 instances. These instances are SAP-certified for running Business Suite on HANA, SAP S/4HANA, Data Mart Solutions on HANA, Business Warehouse on HANA, SAP BW/4HANA, and SAP NetWeaver workloads on any database. To learn more, visit the EC2 X2i Instances Page, or connect with your AWS Support contacts.
Amazon FSx for Windows File Server is now available in the AWS Mexico (Central) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for Windows File Server file systems in the AWS Mexico (Central) Region, providing fully managed shared storage built on Windows Server. Amazon FSx makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for Windows File Server provides fully managed, highly reliable file storage built on Windows Server and can be accessed via the industry-standard Server Message Block (SMB) protocol. To learn more about Amazon FSx for Windows File Server, visit our product page, and see the AWS Region Table for complete regional availability information.
Amazon FSx for Windows File Server is now available in the AWS Asia Pacific (Thailand) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for Windows File Server file systems in the AWS Asia Pacific (Thailand) Region, providing fully managed shared storage built on Windows Server. Amazon FSx makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for Windows File Server provides fully managed, highly reliable file storage built on Windows Server and can be accessed via the industry-standard Server Message Block (SMB) protocol. To learn more about Amazon FSx for Windows File Server, visit our product page, and see the AWS Region Table for complete regional availability information.
Amazon FSx for Lustre is now available in the AWS Asia Pacific (Thailand) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for Lustre file systems in the AWS Asia Pacific (Thailand) Region, providing fully managed shared storage with the scalability and performance of the popular Lustre file system.
Amazon FSx makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for Lustre provides fully managed shared storage built on the world’s most popular high-performance file system, designed for fast processing of workloads such as machine learning, high performance computing (HPC), video processing, financial modeling, and electronic design automation (EDA). To learn more about Amazon FSx for Lustre, visit our product page, and see the
Amazon FSx for Lustre is now available in the AWS Mexico (Central) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for Lustre file systems in the AWS Mexico (Central) Region, providing fully managed shared storage with the scalability and performance of the popular Lustre file system. Amazon FSx makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for Lustre provides fully managed shared storage built on the world’s most popular high-performance file system, designed for fast processing of workloads such as machine learning, high performance computing (HPC), video processing, financial modeling, and electronic design automation (EDA). To learn more about Amazon FSx for Lustre, visit our product page, and see the
Amazon FSx for NetApp ONTAP is now available in the AWS Mexico (Central) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for NetApp ONTAP file systems in the AWS Mexico (Central) Region, providing fully managed shared storage in the cloud with the data access and management capabilities of ONTAP. Amazon FSx makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for NetApp ONTAP provides the first and only complete, fully managed NetApp ONTAP file systems in the cloud. It offers the familiar features, performance, capabilities, and APIs of ONTAP with the agility, scalability, and simplicity of an AWS service. To learn more about Amazon FSx for NetApp ONTAP, visit our product page, and see the
Amazon FSx for NetApp ONTAP is now available in the AWS Asia Pacific (Thailand) Region
9 May 2025 @ 5:00 pm
Customers can now create Amazon FSx for NetApp ONTAP file systems in the AWS Asia Pacific (Thailand) Region, providing fully managed shared storage in the cloud with the data access and management capabilities of ONTAP. Amazon FSx for NetApp ONTAP makes it easier and more cost effective to launch, run, and scale feature-rich, high-performance file systems in the cloud. It supports a wide range of workloads with its reliability, security, scalability, and broad set of capabilities. Amazon FSx for NetApp ONTAP provides the first and only complete, fully managed NetApp ONTAP file systems in the cloud. It offers the familiar features, performance, capabilities, and APIs of ONTAP with the agility, scalability, and simplicity of an AWS service. To learn more about Amazon FSx for NetApp ONTAP, visit our product page, and see the
networkworld.com
Information, intelligence and insight for Network and IT Executives.
Trump administration to rescind, modify AI chip export curbs
9 May 2025 @ 5:41 pm
A number of press outlets, including Bloomberg are reporting that the Trump administration has revised restrictions put in place by the Biden administration on the export of powerful AI processors to foreign countries, legislation that has upset Nvidia and other chip makers.
Citing unnamed sources familiar with the matter, the repeal, which is not yet final, seeks to restructure
Nutanix partnerships target storage, AI workloads as it aims to take on VMware
9 May 2025 @ 3:52 pm
Nutanix (Nasdaq:NTNX) has finally made its big move to take on VMware and take advantage of uncertainty and dissatisfaction with the new course that Broadcom has set out for the virtualization leader. At its .NEXT 2025 conference, Nutanix unveiled a slew of partnerships in storage, cloud and AI with players Nvidia, Pure Storage, Google Cloud and Canonical.
First the
Beyond firewalls: SonicWall pivots to embrace cloud, services, AI
9 May 2025 @ 2:43 pm
SonicWall got its start over three decades ago, and for much of the company’s history, hardware – specifically network firewalls – has been the primary focus.
SonicWall operates around the world and claims to have approximately half a million c
Broadcom’s licensing clampdown: Subscription-less VMware users face legal ultimatum
9 May 2025 @ 1:12 pm
Broadcom (Nasdaq:AVGO) has initiated what appears to be a systematic legal offensive against subscription-less VMware customers who hold a perpetual software license and have expired support contracts, some within days of expiration.
The legal notices demand immediate removal of any updates installed after support expiration and explicitly threaten “claims for enhanced damages and attorneys’ fees” for what Broadcom characterizes as intellectual property infringement, according to the letter,
Quantum computing gets an error-correction boost from AI innovation
9 May 2025 @ 12:08 pm
Theoretical physicists at RIKEN have made a key advance in quantum computing, using AI to improve the Gottesman-Kitaev-Preskill (GKP) code, a vital error-correction method. This breakthrough, detailed in a recent release, slashes the resources required to maintain stable quantum information, particularly in photonic systems, bringing fault-tolerant quantum computers closer to reality.
“Quantum computers have the potential to solve problems beyond the capabilities of today’s most powerful supercomputers,” Franco Nori of the RIKEN Center for Quantum Comput
Dispute over Broadcom’s licensing policy escalates
8 May 2025 @ 9:17 pm
VOICE, a German association of IT users, has filed a complaint with the EU Commission against Broadcom/VMware for infringements of competition law. According to the user association, Broadcom is abusing its dominant market position in the field of virtualization software.
Specifically, VOICE accuses Broadcom of “imposing exorbitant and unfair price increases with the help of arbitrarily compiled product bundles as part of the switch from perpetual licensing to subscription.” VOICE reports price increases of sev
Broadcom allegedly sends demand letters to perpetual VMware license holders
8 May 2025 @ 7:44 pm
Broadcom has sent cease-and-desist letters to VMware perpetual license holders whose support contracts have expired, according to a report in Ars Technica.
The letters state that users suspected of unauthorized use of patches, bug fixes, and updates released after the expiration of the support agreement may be subject to review. The exception detailed in the letter is security patches for zero-day vulnerabilities, according to the report.
After
More math on the Linux command line
8 May 2025 @ 3:10 pm
Linux provides quite a few commands that let you do math on the command line. Which is best depends on the kind of math that you’re doing and the precision that you’re expecting. This post covers five different commands with examples of how to use them and expands upon my earlier post.
Using expr
The expr command is one of the most frequently used commands for doing integer arithmetic. Here are some examples for adding subtracting and dividing:
$ expr 77 + 55132$ e
Nutanix expands beyond HCI
8 May 2025 @ 2:07 pm
Nutanix is often associated with the concept of hyperconverged infrastructure (HCI), but that’s not the direction for what’s coming next from Nutanix.
At the Nutanix .NEXT conference this week, the vendor is extending its reach beyond traditional HCI into external storage, containerized architectures and AI-focused solutions. It’s promoting a vision of “run anything, run anywhere” that now includes support for more storage options, hypervisor-free deployments and AI model management.
The key announcements include:
Nutanix Enterprise AI (NAI):
Networking errors pose threat to data center reliability
8 May 2025 @ 1:09 pm
Power-related outages remain the leading cause of major data center downtime, accounting for more than half (54%) of all cases tracked in Uptime Institute’s 7th annual outage analysis. Network-related and IT systems issues accounted for 12% and 11% of impactful data center outages, respectively, with networking/connectivity accounting for 30% of end-to-end IT service outages, the report found.
Uptime conducted analysis using the latest data from several of its reports and surveys in both 2024 and 2025, and the research shows that the frequency of outages is decreasing. In a 2024 survey, 53% of operators reported an outage in the past three years. In 2023,
forensicswiki.org
Computer forensic tools and techniques used by investigators
cyberciti.biz
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
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
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 KSLinux Sed Tutorial: Learn Text Editing with Syntax & Examples
3 March 2025 @ 9:47 am
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 tHow to tell if FreeBSD needs a Reboot using kernel version check
23 February 2025 @ 10:07 pm
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: TwitterCritical 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.
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How to control the SSH multiplexing with the control commands
15 January 2025 @ 8:29 am
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 gotcZFS 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.
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How to run Docker inside Incus containers
18 December 2024 @ 5:44 am
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
Hosting packages for an initial web presence
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 has an online presence. Web hosts will securely store your website’s files, images, and digital content on a server, making it accessible to the public [read more...]
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 source server does not appear to be a Plesk server” “Plesk Migrator tool requires original ‘root’ user access or root user with GUI/UID = 0.” [read more...]
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 source server does not appear to be a Plesk server” “Plesk Migrator tool requires original ‘root’ user access or root user with GUI/UID = 0.” [read more...]
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?
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 of our most popular products to get the tools you need at a fraction of the cost. What’s on Offer? Here’s what you can save [read more...]
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, visitors are likely to abandon it faster than you can say “bounce rate.” But fear not! Here are some tips to help you optimise your [read more...]
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You can now get up to 33% off the price of a cPanel-managed Web Hosting plan at Heart Internet.
10 of the best WooCommerce plugins
27 October 2022 @ 10:53 am
Including options for optimising your cart, boosting customer loyalty, and selling tickets.
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serverfault.com
Common Server issues – FAQs and answers from those in the know
Login screen frozen in virt-manager with VM Ubuntu Server 24.04.2 LTS
12 May 2025 @ 12:30 pm
I installed a VM with Ubuntu Server 24.04.2 LTS on KVM.
When I open virt-manager and I start the VM domain everything works but when I close virt-manager and I open it again I can't type, in the console, username and password (there is no cursor), but I can use the buttons and I can access the VM via ssh.
These are the steps I follow
Open Xming for Windows
Access via ssh to the server and run the command virt-manager
when the window appears I click twice on VM to open the console
This is the output of version command in virsh
Compiled against library: libvirt 8.0.0
Using library: libvirt 8.0.0
Using API: QEMU 8.0.0
Running hypervisor: QEMU 6.2.0
I tried to:
switch from Spice Server to VNC Server
set Address of Spice Server to All interfaces
open virt-manager from linux with -Y option in ssh connection to check if xming has problems
Thank
sshd stops accepting connections after a few minutes – requires manual restart
12 May 2025 @ 12:22 pm
I'm facing a strange issue with sshd on my server. I have a custom SSH service running (custom-sshd.service) on a non-standard port. Every time I reboot or manually restart the service using:
sudo systemctl restart custom-sshd.service
…it works for a short time (~5 minutes), and I can connect to the server via SSH from my local Linux machine.
However, after a few minutes, any new SSH attempts fail with errors like:
ssh_exchange_identification: Connection closed by remote host
ssh_exchange_identification: read: Connection reset by peer
Specific Repro Steps:
From my local machine, I SSH into Server A – works fine.
Then I SSH into Server B from my local machine – works fine.
Now, from Server B, I try to SSH back into Server A, and I get the above error.
The only workaround is to restart custom-sshd.service on Server A, after which SSH starts working again temporarily.
What I’ve
SLES 15 unable to change logfile for service
12 May 2025 @ 12:07 pm
I am trying to change the logfile destination for one of our services , to keep the journal clean and to reduce diskspace consumption of logfiles.
It seems to me that the journal is not being compressed on our SLES15 System, even though I set the Compress=yes setting in /etc/systemd/journald.conf .
So I tried to mitigate this problem by setting StandardOutput=append:/var/log/myapp and StandardError=append:/var/log/myapp directly in the service file.
But for whatever reason the logs are still written to journald instead of this file.
Can someone give me assistance?
Find out whether an IP address is within a subnet in Mikrotik address list
12 May 2025 @ 8:10 am
In a script I use following line to find out whether some address is already in a list:
/ip fire addr find where list=$listName address=$logIp
The block looks as follows:
:if ([:len [/ip fire addr find where list=$listName address=$logIp]] < 1) do={
/ip fire addr add address=$logIp list=$listName timeout=7d
:log info message="failed src_ip=$logIp"
}
The problem is that if I already have a subnet in the list, for example 205.210.31.0/24, following addresses are still added individually:
205.210.31.109
205.210.31.164
205.210.31.199
because they weren't found by the find command.
How to find out if an address is in an address list, also taking subnets into account? Subnets should be not only /24, but of any size.
MariaDB Server Disk Full Err28 Pointing to /tmp/#sql-temptable-468-19b-2.MAI - Where Do I Find This, What Might Have Caused The Issue
12 May 2025 @ 7:44 am
Thank you for looking at my question,
We have a MariaDB MySQL database server version 10.6.21
It is reporting Fatal Error - SQL select table_schema,table_name from information_schema.views where table_schema = ? failed : Disk full (/tmp/#sql-temptable-468-1a7-2.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
[Error Message][1]
[1]: https://i.sstatic.net/82zPKryT.png
Please, how do I fix this issue - what might be the cause? I look in folder var/tmp and it contains only systemd-private folders that are empty - am I in the right folder?
Resolve both www.domain and domain to the same address
11 May 2025 @ 5:40 pm
I know this question has to be asked frequently, and yet I just cannot get a straight answer about what I really, for real need to do.
I have a domain, www.theuntaintedsky.org registered with GoDaddy.
GoDaddy is configured to use Linode's nameservers, where the host I wish to point to lives.
Linode is configured with A records to resolve www.theuntaintedsky.org to what I want (dig output below).
dig theuntaintedsky.org times out.
What records do I need to add in the Linode configuration so dig theuntaintedsky.org works?
www.theuntaintedsky.org. 86400 IN NS ns4.linode.com.
www.theuntaintedsky.org. 86400 IN NS ns1.linode.com.
www.theuntaintedsky.org. 86400 IN NS ns2.linode.com.
www.theuntaintedsky.org. 86400 IN NS ns5.linode.com.
www.theunt
DNS not picking up updates
11 May 2025 @ 1:03 pm
I recently moved my website to a new server and updated the DNS entries. This includes some API endpoints that other servers use.
These other servers however are not picking up the changes and are still hitting the old API server.
Is there a way to force these servers to pick up the new DNS entries or do I just have to wait? It's been over 24 hours so far.
TP-Link Wifi extender causes duplicate IP reporting [migrated]
11 May 2025 @ 9:50 am
My ISP's wi-fi router is a Huawei one with the IP address of 192.168.100.1
I have a TP-Link TL-WR840N wi-fi in range extender mode installed for a long time. That's the one my laptop is connected to right now.
Recently, to cover a low signal area, I installed a TP-Link TL-WA855RE, also in extender mode. My XBox, Android and iPhones in that area work just fine.
Laptops in any area do not. They connect to wi-fi but don't get any IP. This laptop just now didn't get one. Double-checking shows that DHCP is enabled only on the Huawei.
Checking the laptop logs shows that it does get assigned an IP from the range I've defined, but after a second or so marks it as duplicate. The curios thing is that the log shows that any IP that gets assigned to the laptop is a duplicate for device with one particular MAC; the MAC belonging to the Huawei.
To use the laptop, I have to either give it a static IP, or power off the WA855RE.
Can't think of any reason why
Broadcom NetXtreme-E 10Gb (BCM57412) on Debian 12
10 May 2025 @ 8:32 pm
After I installed a fresh Debian 12 on a Dell R430 server I got a Broadcom fiber card.
After the boot, the system loaded the bnxt_en driver I can see 2 new interfaces however I am not able to use them.
We plugged it to the fibre switch. The green led is slowly blinking in the network card, I am not sure what does that mean...
ethtool shows that there is no link detected :(
Here are the details:
# uname -a
Linux fw 6.1.0-34-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.135-1 (2025-04-25) x86_64 GNU/Linux
#
# lsmod | grep bnx
bnxt_en 339968 0
root@fw:~#
# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: ens2f0np0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default
Apache won't proxy to Tomcat 10
10 May 2025 @ 7:48 pm
I'm installing a JSP webapp on Ubuntu 24.04 using Tomcat 10 and Java 11. The app is designed to have Apache proxy JSP requests to Tomcat via AJP. It has worked with previous versions of Ubuntu, Tomcat and Java going back to at least 2014.
When I attempt to access the index page of the app on the new system, the server returns a "503 Service Unavailable" error. As far as I can tell, I'm setting it up exactly like previous instances that have worked.
Apache's mod_proxy and mod_ajp are both enabled:
$ ls /etc/apache2/mods-enabled | grep "prox"
lrwxrwxrwx 1 root root 32 Mar 17 13:02 proxy_ajp.load -> ../mods-available/proxy_ajp.load
lrwxrwxrwx 1 root root 28 Mar 17 13:02 proxy.conf -> ../mods-available/proxy.conf
lrwxrwxrwx 1 root root 28 Mar 17 13:02 proxy.load -> ../mods-available/proxy.load
Tomcat's /etc/tomcat10/server.xml has its AJP Connector enab
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