domain name system – systemd-networkd: define DNS via CLI for the managed link

I want to define the DNS for an interface managed by systemd-networkd via cli.
The file system is mounted read-only, so is there any way to do this without manipulating files?

I tried for example:

systemd-resolve --interface eth0--set-dns 12.34.56.1 --set-domain lxd

This gives me the error:

The specified interface eth0 is managed by systemd-networkd. Operation refused.
Please configure DNS settings for systemd-networkd managed interfaces directly in their .network files.`

I also tried:

busctl call org.freedesktop.resolve1 /org/freedesktop/resolve1 org.freedesktop.resolve1.Manager SetLinkDNS 'ia(iay)' 2 1 2 4 8 8 8 8

Which causes the error: Link eth0 is managed

I would like to manipulate the DNS servers during runtime. This is not a problem, when they get lost on reboot.

Thanks in advance. πŸ™‚

dnd 5th – For experienced / longtime players DnD 5th and Pathfinder 2nd. Could anyone simplify the "major differences" in style, system, players?

I know this is a bit of a "broad net" question. I am currently moving to 5th after years of activity (after leaving 4th) from 3.5th.

I joined "AL" locally when I came back to DnD (5th now) but I'm … A little disappointed.

The mechanics seem "secondary" to the role play seems "primary".

I have spent the last 13 years or more away from TT-RPG

I want a very mechanical game with other players who are also "rules to their letter experts"not yourself"RP-actors".

Is "Pathfinder 2e" the system related to D&D, currently popular enough to find players, which suits my needs?

I played D&D: Basic, Advanced, 2nd, 3.5th, 4th (twice), 5th (about 10 times)

j & # 39; I do not played any version of Pathfinder

macos – the Time Machine menu in system preferences shows no backups

Time Machine says that this computer has never been backed up … but it is!

System Preferences

When I enter Time Machine, I can still access the backups.

Time Machine

I checked tmutil machinedirectory and it points to a valid directory on the external hard drive containing all of my backups. tmutil destinationinfo refers to the external hard drive. More important again, tmutil latestbackup refers to the last backup to the hard drive.

I think i might need to run tmutil associatedisk or tmutil inheritbackup but I don't want to risk corrupting my backups without knowing more.

reference request – Energy estimation for linear hyperbolic system (without Fourier)

Where can I find proof of an energy estimate (under appropriate assumptions) for the following linear hyperbolic system which is not based on Fourier methods?

$$ frac { partial U} { partial t} + sum_ {j = 1} ^ m A_j frac { partial U} { partial x_j} + B cdot U = 0, $$
or $ x in mathbb R ^ m $ and $ U in mathbb R ^ n $ and $ A $ is a symmetric matrix.

Help the beta test a new API-hosted messaging system and get 6 months of free service after the beta

Mailcheap.co (Cyberlabs s.r.o.CZ & Cyberlabs Inc. USA) has been offering corporate messaging solutions at affordable prices since 2015.

We are pleased to announce the launch of the beta version of our new API hosted messaging platform. We welcome your participation and your valuable comments. You will receive 6 months of free beta service (plus 3 months if you find the hidden Easter egg!)

Presentation of the new messaging system (NMS)

The new messaging system (NMS) is a first messaging platform hosted by API of Mailcheap. It allows you to control all facets of a messaging system using the API, even the graphical interface is fully built on it.

In addition to supporting SMTP, IMAP and POP protocols for sending / retrieving email, it also supports native contacts (CardDAV) and calendar (shareable, CalDAV), two-factor authentication (2FA) and an automatic migration function (more information below). ).

In essence, NMS allows full programmatic access to email administration (via the HTTPS API) and use (via existing SMTP / IMAP / POP protocols), thereby providing seamless integration with your existing systems.

System features

  • 100% API support for email administration
  • Responsive and modern HTML5 Frontend (GUI)
  • Ultra fast graphical interface (after the first page loads!) Completely designed in Javascript on the client side
  • Multiple levels of authorization, including MasterAdmin (dedicated servers), DomainAdmin (shared servers, provisioned during / after beta) and MailUser – more information below
  • Automatic migration function – more information below
  • Two-factor authentication based on TOTP (2FA)
  • IMAP / POP / SMTP support
  • Complete control of your data with a dedicated server: possibility to save calendar / contact data and email data.

Messaging functions

  • Domains with SDR, DKIM, antispam thresholds and whitelist / antispam blacklist controls
  • Mail boxes
  • Alias ​​and forward
  • Sender addresses
  • Domain aliases
  • Relay domains with anti-spam thresholds and whitelist / anti-spam blacklist controls
  • Import / export the above items
  • Contacts (CardDAV)
  • Calendar (shareable, CalDAV)
  • Server-side message filters based on sieves
  • Server-side vacation with automatic response based on the sieve

webmail

  • Roundcube: default and recommended webmail with contact support (CardDAV) and calendar (CalDAV)
  • Rainloop: alternative webmail

Authorization levels

  • MailUser is the permission level with the ability to send and receive emails.
  • DomainAdmin administers all mail users in the domains that belong to them.
  • MasterAdmin administers all administrators and email users and has access to server-wide configuration.

Automatic migration

Automatic migration allows you to migrate users and their emails without reset passwords, manually import passwords, or migrate email data for each user

How it works

  • Configure automatic migration for a domain with the details of your existing IMAP server (source)
  • Your users can then sign up from the login page
  • The system verifies their credentials with the source IMAP server, creates an account for them and migrates the emails

imagery

Mailcheap New Mail System (NMS) Beta

Order a beta plan

Basic-10G-NMS

Unlimited domains | Unlimited users | Shared calculation | 10 GB of email quota | Ordered
Promotional code: BETA-WEGQI9P71I (choose the half-yearly billing period)
Invite a link to the Discord server for collaboration during the beta version: https://discord.gg/DvDgQhv

By participating in the beta version, you agree to our terms of use (https://www.mailcheap.co/legal.html). All orders must pass a fraud check, your participation requires at least a weekly return by e-mail and / or Discord. We reserve the right to refuse participation for suspicious orders and / or accounts.

Server diagnostics and recovery | cPanel | Live Chat Support | Dedicated system administrators and many more.

GetMyAdmin, with its highly qualified team of server engineers, has always been a preferred choice for web hosting service providers from its inception. Our goal is to provide 100% customer satisfaction via multi-channel support services, including on-call support, instant messaging and responsive email support. We are proud to offer sophisticated web hosting support services by playing the role of an extended outsourced arm of your hosting business at an affordable and competitive price.

Key features of our web hosting support service:

βˆ™ Availability 24×7
βˆ™ Experienced and certified professionals
βˆ™ Support for servers of all types
βˆ™ Support for control panel
βˆ™ Support for different versions of operating systems
βˆ™ Quick response and quick resolution
βˆ™ Support for white brands for brand recognition

WhyGetMyAdmin?

GetMyAdmin consciously tries to differentiate itself from its competitors using our systematic approach and our positive attitude towards customer relationship management. We strive to build a strong business relationship by focusing on customer needs – which translates into mutual trust and lasting relationships. We are committed to providing the best technical support in its class to web hosting customers, raising the bar with unmatched performance and flawless reliability.

Perfectly designed support plans for web hosting companies:

We offer several technical support plans that are designed to perfection for web hosting service providers, resellers and customers. Our flexible plans are designed to cover all of your web hosting needs. With GetMyAdmin at your disposal, you can be assured of providing a hassle free experience to your web hosting clients.

Administration by server:

Server-based packages are ideal for small businesses with 1 to 5 servers. These packages are specifically aimed at small and start-up businesses looking for technical assistance in building a reliable, secure and performance-oriented server infrastructure. All technical support requirements of hosting customers from design through to the deployment and maintenance phase are exclusively covered by these packages. From setting up a brand new server to securing an existing environment, managing daily activities and optimizing performance, we take care of everything on your behalf so you can focus fully on the business side.

What's included:

βˆ™ Server deployment, installation and configuration of the operating system
βˆ™ No downtime server migration and transfer
βˆ™ Installation and configuration of the control panel
βˆ™ Software installation and upgrade
βˆ™ Technical troubleshooting and problem solving
βˆ™ Proactive server monitoring
Expert Expert assistance 24 hours a day, 7 days a week by phone, chat and e-mail

pricing:

The entry-level package costs only $ 30 per month per server.

Pay Per Ticket Support Plan:

If you are looking for incident-based server support, ticket support plans are your ideal bet. These white label support plans are usually "pay as you go" services – where you pay based on the number of tickets collected in a given month. In summary, you get 24/7 expert support, instant response and fast resolution at an affordable fixed monthly price. These are ideal for customers who have a low volume of incidents but who need 24 hour coverage.

What is included?

βˆ™ Server installation and configuration
βˆ™ Server migration
βˆ™ Security and hardening
βˆ™ Optimization and optimization of performance
βˆ™ Technical troubleshooting
βˆ™ Support for control panel
βˆ™ Third-party installations
βˆ™ Support for basic pre-sales queries

pricing:

Only $ 50 a month for the entry-level package

Dedicated support plan:

Are you looking for a white label technical support team to work only for your hosting company? Look no further than GetMyAdmin. The dedicated GetMyAdmins support plan puts at your disposal a team of experienced engineers exclusively at your disposal. You can trust our dedicated server professionals to transparently manage your technical support wing as a
expanded branch of your internal team. An ITIL certified quality assurance manager oversees the entire operation to ensure the highest level of quality. Rest assured, our refined and rigorous quality process will not only satisfy your customers, but will also improve the reputation of your hosting company by leaps and bounds.

What is included?

βˆ™ 24/7 availability
βˆ™ Fully dedicated professionals for high priority support
βˆ™ Responsible dedicated to quality assurance
βˆ™ Support for unlimited servers
βˆ™ No bar on the number of tickets
Support White label support
βˆ™ Proactive server monitoring and health check

pricing:

Starting at $ 800 per month.

Live chat support:

Gone are the days when customers waited hours for an email response from tech support. Live chat has now become the global standard for real-time customer interactions. No matter what time of day, if your customers need technical assistance, our expert professionals are always available to answer their questions quickly. And it is a fact that quality interactions ensure a stronger customer relationship. Most importantly, our service is 100% white label, which preserves your brand identity. Our team would simply function as an extended arm of your business.

What is included?

βˆ™ 24/7 service window
βˆ™ Emergency treatment
βˆ™ Real-time responses
βˆ™ Includes technical troubleshooting
βˆ™ Covers pre-sale requests
PrΓ©cises Precise and personalized answers
βˆ™ Friendly and patient support staff
βˆ™ Excellent communication skills in English
Support White label support

pricing:

The starter package is priced at just $ 50 a month.

Semi dedicated support:

The efficiency of dedicated support and the affordability of shared support are combined to provide you with the convenience of semi-dedicated support. This hybrid model is ideal for customers who cannot afford to sign up for dedicated support due to budget constraints, but who need priority support higher than what the plans shared assistance can provide. The semi-dedicated packages are carefully designed to provide priority service at an affordable price.

pricing:

The plan starts from $ 300 a month.

If you are looking for an experienced hand to meet the technical requirements of your web hosting clients, we are at your service. Our experienced support technicians are skilled at handling all types of technical issues related to running a web hosting company. Contact us today and allow our highly skilled server administrators to manage your hosting environment with the utmost care. Rest assured, GetMyAdmin will keep your servers stable and your customers satisfied!

Useful tools and tips for a streamlined dynamic database search system?

Recently, I was in charge of developing a search system integrated into an existing website which searches in a database with a parameter (identification number) and returns data such as name, etc. The database is updated approximately every month.

I have a little knowledge of HTML / JS / PHP and I could probably learn enough in a few weeks to complete, but I was wondering if there were existing tools and technologies to facilitate this project?

Additionally, the data that is added to the database comes from responses from a google form, so there is a way to streamline this by adding this data directly to the database rather than having to manually enter or upload a csv file and write a script add to the database?

computer vision – Estimation of the laser plane for a laser-camera system?

I need to set up a line / plane laser projector system and a web camera to locate the 3D position of the laser in the camera image. I have read / encountered several resources but the idea is not yet quite concrete in my head.

So my intuition is that since we have a configuration of a laser projector and camera, and we want to find the position of the laser point in the image – we have to find the “ correct '' laser plane & # 39; & # 39; which cuts the camera / image plane. I am confused as to how we find the relative pose of this plane relative to the camera, and how can we use it to find the 3D coordinates?

cpu – What can we vertically resize a system to infinity?

Vertical scaling has its limits.

These limitations are called Physics and Engineering.

It turns out that physics doesn't like to do too much work in one place, and our current engineering skills can only compress so much useful work before it becomes a unnecessary noise.

As for current performance:

  • You can search for the references of the different systems that you plan to use.

  • You can go even further and compare a benchmark with a workload similar to the one you have in mind.

Answers to your direct points:

  1. Stupid answer: in the year 2020, somewhere in the range of 64 GB to 1 TB depending on the specific hardware, could be more, but it quickly becomes expensive.

    • No stupid answer: = Min(2 ^ bits in the pointer * number of system provided heaps, Max OS support Memory, Max supported Ram Module Size * Available Ram Slots)
  2. Dumb answer: In the year 2020, a few to a few Tera bytes.

    • No stupid answer: = Min(max file size in File system * Max number of files in file system * number of supported file systems, Max OS Support for File-system size, Number of available Drive Connection Ports * Max size of installable storage modules)
  3. Dumb answer: Bits per second. Although you are talking about application specific speed, in which case simultaneous connections or requests per second are better measures.
    • No stupid answer: the slowest point on the network. This will likely be the Internet link itself, or the application responding to requests from the network. Although it can easily be one of the intermediate network devices.

user behavior – What is the best way to map a product's notification system?

I'm looking for design research or some other method used to map the frequency, priority and intensity of notifications based on emotion, behavior, etc. of a user.

This method can be applied to any user task in which we would like the user to finish. How could we map the email marketing system, push notifications, SMS, product notifications (full screen modal, toast, etc.) and other notification methods in a way significant that does not overwhelm the user, but always keeps them on track to complete the task.

Is there a method to map user behavior and how the frequency / timing of notifications directly affects this?

I guess a user route map could work here, but I was looking for something that directly matches notifications in digital products. It seems to me that there is an intrinsic design possibility to balance the frequency / intensity of notifications and the behavior / emotions of a user.