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CMS Development Drupal

Is there any module or solution to implement paid membership somehow in registration form?

It is possible to implement a paid membership on register form? So I would like to have 3 user roles. The visitors, the registered users without membership having the same privileges as the visitors and the registered users with membership. At the register form they can choose to pay or not. The payment will be […]

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Linux Mastering Development Ubuntu

System does not boot after recent kernel upgrade

I did an apt-get dist-upgrade that installed a new kernel today. Now my ASUS UX330U does not boot anymore. Fan, power LED and Caps Lock are on but screen is dark and there is nothing I can do anymore. Booting from USB is not possible. Looks like the System is severely damaged. Has anyone […]

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Mastering Development System & Network

The imported certificate does not match the chosen ca type and will not be used

I am migrating from Windows Server 2012 to Windows Server 2019. This is a subordinate CA and I encounter the following error when trying to import the certificate. The imported certificate does not match the chosen ca type and will not be used. Any help would be greatly appreciated.

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Mastering Development System & Network

how can I create a drive partition using uefi intractuve shell v2.0

during setup win 8 I deleted all drive partition and didn’t create a new one and by mistake my tablet shutdown because I lose power and after that when I try to open it again it stops in uefi intractuve shell v2.0 and I can’t do anything and I tried to boot from USB and […]

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Mastering Development System & Network

How do I access an ubuntu server running behind a DHCP server?

I had an ubuntu server that I could not connect to wifi so I took my raspberry pi and followed these directions using my rpi to convert my wifi signal into an ethernet connection https://www.instructables.com/id/Share-WiFi-With-Ethernet-Port-on-a-Raspberry-Pi/ Everything worked out great and I was able to connect my server to the internet except now I’m not sure […]

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Mastering Development System & Network

AWS load balancer sending traffic to unhealthy instances

I have an Elastic Beanstalk environment with four EC2 instances and an ALB. If I look on the EB dashboard, I can see my EC2 instances; if a PHP error gets introduced on one of them, that instance gets quickly and correctly marked as unhealthy. However, the ALB still directs traffic to unhealthy instances, even […]

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Mastering Development System & Network

Cannot access virtual hosts directory after configure apache

My virtual hosts have this configuration file: <VirtualHost *:80> ServerAdmin klebermo@gmail.com DocumentRoot /home/kleber/www/kleber ServerName klebermota.eti.br ServerAlias www.klebermota.eti.br </VirtualHost> in my apache2.conf i have this configuration: <Directory /> Options FollowSymLinks AllowOverride none Require all denied </Directory> <Directory /usr/share> AllowOverride none Require all granted </Directory> <Directory /var/www/> Options Indexes FollowSymLinks AllowOverride none Require all granted </Directory> when […]

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Ask Mathematics

Coordinate Geometry: Problem on ellipse involving chain of circles [closed]

Suppose we have an ellipse $E$ with major axis $AB$. Consider a finite chain of circles $C_1$, $C_2$, $C_3$, … all having their centres on $AB$ and touching $E$ internally such that each circle touches its neighbour(s) externally. (The figure resembles peas inside a pod.) Let $r_1$, $r_2$, $r_3$, … be the radii of these […]

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Ask Mathematics

What do you call a set of vertices that separates the root from the leaves?

Suppose we are given a rooted tree $T$, and a set of vertices $M$ that separates the root of $T$ from its leaves. In other words, every path from the root of $T$ to a leaf contains a vertex in $M$. Is there a standard term for such a set $M$?

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Linux Mastering Development

Tunnel to access internet

There is a central server A that doesn’t have internet access. I am supposed to log in to a server B (that has an internet connection) and launch jobs on A. I wonder if I can create a tunnel from A to B to connect to the internet. There is information that I want to […]