I've got a production server with **Apache 2.4.38** on **Debian 10** and sometimes the web server doesn't function properly and doesn't immediately send a response to the HTTP requests it gets (All virtual hosts requests on it are completely unresponsive (no matter what they reverse proxy to)). After a restart it immediately fixes itself or after being like this a while (seconds or even minutes) and starts sending A LOT of HTTP responses all of a sudden.

CPU and RAM usage seem to be fine, so it's definitely not that. I don't know what exactly is going on and why it's doing this. I've also changed mpm_event.conf settings, they currently are set to this:

StartServers                     2
        ServerLimit 100
        MinSpareThreads          25
        MaxSpareThreads          75
        ThreadLimit                      128
        ThreadsPerChild          25
        MaxRequestWorkers         400
        MaxConnectionsPerChild   5000

There are some errors I've seen in the Apache error log though:

[Tue Mar 22 19:53:38.339703 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 29595 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.339777 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 26190 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.339825 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 27903 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.339889 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 16907 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.339933 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 26880 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.340000 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 15384 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.340041 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 24971 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.340091 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 9780 still did not exit, sending a SIGKILL
[Tue Mar 22 19:53:38.340130 2022] [core:error] [pid 3375:tid 140244229465216] AH00046: child process 26317 still did not exit, sending a SIGKILL

What settings can I change that would fix this issue?

It's been a while since my web-browsing has really suited me. What I would really like is: A javascript-enabled web browser with a tab-based browsing system that can be controlled simultaneously using a console and a GUI. For example, I'd like to be able to... 1) open a bunch of tabs 2) go to the console and tell it something like 'copy the url open in each tab and write it, along with the html, to a file, for each open tab' in other words, I want to be able to browse with tabs at my leisure, and then write scripts that iterate over each tab. Does anything like that exist?

I brought a wss:// server up using websocat:

websocat -E -t -v --pkcs12-der=q.pkcs12 wss-listen:0.0.0.0:8443 mirror:

And on the client I am running this command to establish a secure WebSocket connection:

websocat  wss://:8443

I can send text using this setup and whatever I send gets echoed back. But now I want to send files on the wss:// connection. How do I do that? This is how I am sending files using ws:// and it's working fine. Server:

websocat -s -v 0.0.0.0:8765 > received.txt

Client:

websocat -b ws://:8765 < testfile.txt

I tried something like this: Server:

websocat -E -t -v --pkcs12-der=q.pkcs12 wss-listen:0.0.0.0:8443 writefile:received.txt

Client:

websocat -E -t wss://echo.websocket.org:8443 < testfile.txt

But I am getting this error:

websocat: WebSocketError: I/O failure
websocat: error running

Any help regarding how do I do it with wss:// connection will really help. Thanks. If it's not achievable using websocat, then what other tool I can use to bring up a wss:// server and send files to it?

I have a linux server whose only purpose is to display a full screen web page ("kiosk mode") that has status information regarding other servers in the network. I would now like to add to that (perhaps on a second display), my Wyze cameras, which can all be seen on a nice webpage at Wyze Live View site . The issue I have, is that that site requires login, so I do not see a way to automatically open that page at system startup, in headless mode. Back in the day, when Windows was my primary environment, a tool was available that actually served as the "hands-on" for a browser, and it was capable of this and other automation tasks. Maybe a chromium plugin would be available. Looks like browser plugins may do this, but I am not sure I'm willing to entrust security parameters to a tool like that. Is there a way to hook into the login process, perhaps with something like snoopy php, still allowing "normal" web page functionality?

I'm looking for sort of an 'app-store' or Google Play store type functionality for apt-get packages. What I'd really like to do is select a category, like 'Music' or 'Internet' and see the list of available packages in that category with their summaries. It'd be even better if the packages had ratings or reviews. Does anything like this exist?

I've a VPS in one hosted in an host in this vps I installed Java, Tomcat and MySQL for my web app. After the installation of the packages I made the deploy of my app, if inside of the tomcat/manager I call my app the browser load my web app normaly but when I type my domain in the browser I receive "This site can’t be reached itcmedbr.com refused to connect." I don't have data to work at this moment it's not a problem, what I whant to do for now is to load my login page to see if my domain load in the browser. I don't have any other type of error to report here only this. I don't have Apache and Nginx installed. ------------------------------------------------------------ - url: itcmedbr.com - distribution running: Centos 9 If I go to https://mxtoolbox.com/emailhealth/itcmedbr.com/ it shows me the error message http itcmedbr.com Unable to connect to the remote server (http://itcmedbr.com) but I have: firewall-cmd --zone=public --list-services cockpit dhcpv6-client http https mysql ssh

I'm looking for a command-line program that prints the title of a webpage. For instance:

-shell
title-fetcher 'https://www.youtube.com/watch?v=Dd7dQh8u4Hc '

...should give:

Why Are Bad Words Bad?

You give the URL, the program prints out the title.

i have this string grafana-stack_alloy and require everything after the first underscore alloy. I need the result as a group $1. Tried this one, but it failed. (?:)?([^_]+)*$. Can anyone help me to solve this problem? I am testing this: rule { action = "replace" source_labels = [ "__meta_docker_container_label_com_docker_swarm_service_name", ] regex = "^(?:;*)?([^;]+).*$" work but wrong //regex = "[^_]+.$" ----> not work //regex = "([^_]+)$" ----> not work replacement = argument.namespace.value + "/$1" target_label = "job" } It is about the Grafana Agent with relabel-regex: Grafana prometheus.relabel which use [Google's RE2](https://github.com/google/re2/wiki/Syntax) as its regex engine. Thanks in advance

So, I want to be able to download a web page in a way similar to what https://archive.is does. Using wget -p -E -k usually produces a decent result - but this result is somewhat hard to handle. For example, after wget -p -E -k https://news.sky.com/story/yazidi-woman-kidnapped-by-islamic-state-freed-from-gaza-after-decade-in-captivity-13227540 I got a directory names news.sky.com and the page was available as news.sky.com/story/yazidi-woman-kidnapped-by-islamic-state-freed-from-gaza-after-decade-in-captivity-13227540.html while other necessary files for the page were scattered around in this same news.sky.com directory. I'd prefer to have something similar to how browsers can "save a page" - the page file in the current directory plus a "something_files" subdirectory where the necessities are. I understand I can kinda do that by moving the site directory structure into that files subdirectory and creating a redirect page next to it, but I'd prefer to do it properly if possible. There are also cases pf paywalls that archive.is successfully bypasses but wget -p -E -k does not. For example, with https://www.nytimes.com/2014/10/28/magazine/theo-padnos-american-journalist-on-being-kidnapped-tortured-and-released-in-syria.html , archive.is produced a perfect paywall-less copy, while wget -p -E -k produced the start of the article hanging on "verifying access". I'd like to be doing what archive.is does. Advice on how to change these things would be much appreciated.

Are there any virtualizations that can be accessed via a WebGUI too? I mean the administration part is enough on a terminal, but we need a virtualization/webgui solution for "customers". So that they could for ex.: reboot their guest machine or reach it when it's "frozen" [bsod/kernel panic] or maybe clone it, etc. There is Xen with the xen-shell, but it's not good because it's only available via terminal. Any solutions?

I have a minimal headless *nix which **does not have** any command line utilities for downloading files (e.g. no curl, wget, etc). I only have bash. How can I download a file? Ideally, I would like a solution that would work across a wide range of *nix.

It would certainly be possible to whip together something in Python to query a URL to see when it was last modified, using the HTTP headers, but I wondered if there is an existing tool that can do that for me? I'd imagine something like: % checkurl http://unix.stackexchange.com/questions/247445/ Fri Dec 4 16:59:28 EST 2015 or maybe: % checkurl "+%Y%m%d" http://unix.stackexchange.com/questions/247445/ 20151204 as a bell and/or whistle. I don't think that wget or curl have what I need, but I wouldn't be surprised to be proven wrong. Is there anything like this out there?

How can I monitor incoming HTTP requests to port 80? I have set up web hosting on my local machine using DynDNS and Nginx. **I wanted to know how many request are made on my server every day.** Currently I'm using this command: netstat -an | grep 80

**Context:** - I wanted to install Big Blue Button on a Ubuntu virtual machine via SSH; - I followed correctly the official tutorial up to the "Install" section ; - I entered the following command on the terminal: wget -qO- https://raw.githubusercontent.com/bigbluebutton/bbb-install/v2.7.x-release/bbb-install.sh | bash -s -- -w -v focal-270 -s -e -g -k using real data on "here the domain name" and "here the email"; - I got **the instalation error** detailed below; - Accessing the real "here the domain name" by HTTP gives me "500 Internal Server Error -- nginx"; - It is not accessible by HTTPS: "ERR_CONNECTION_REFUSED". **The installation error** in its full glory: A instalar certbot (0.40.0-1ubuntu0.1) ... Created symlink /etc/systemd/system/timers.target.wants/certbot.timer → /lib/systemd/system/certbot.timer. A processar 'triggers' para man-db (2.9.1-1) ... Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator webroot, Installer None Obtaining a new certificate Performing the following challenges: http-01 challenge for Using the webroot path /var/www/bigbluebutton-default/assets for all unmatched domains. Waiting for verification... Challenge failed for domain http-01 challenge for Cleaning up challenges Some challenges have failed. IMPORTANT NOTES: - The following errors were reported by the server: Domain: Type: caa Detail: CAA record for prevents issuance - Your account credentials have been saved in your Certbot configuration directory at /etc/letsencrypt. You should make a secure backup of this folder now. This configuration directory will also contain certificates and private keys obtained by Certbot so making regular backups of this folder is ideal. bbb-install: Let's Encrypt SSL request for did not succeed - exiting **The Let's Encrypt log** in its full glory: - https://sprunge.us/pQGlat **Questions:** 1. since the problem appears to have started with the SSL certificate during installation, disabling/removing it could solve the "500 Internal Server Error"? 2. if yes, how to do it without uninstalling and reinstalling Big Blue Button? (I suppose uninstalling and reinstalling would be more traumatic due to leaving residues behind to create brand new errors) 3. if no, how to troubleshoot the "500 Internal Server Error", finding its cause and solution?

I’m trying to figure out if I’m able to port a webassembly based webapplication to QNX. But it is hard to find any information about what versions of browsers and web engine libraries that are shipped with what version of QNX and what features they support. SDP 7.x (which I believe is used with QNX 7 and CAR 3?) seems to be shipped together with a modernized browser based on the Blink engine (instead of the webkit lib used in QNX 6). [It uses uses the V8 JavaScript engine](https://blackberry.qnx.com/content/dam/qnx/products/qnxcar/QNX_WebBrowser_ProductBrief_FINAL.pdf) [which supports webassembly](https://v8.dev/) So the browser in it self should support webassembly, right? I guess the webassembly code created with Emscriptens should be able to be compiled on any platform and transferred to the QNX system. Cause I believe Emscriptens wont run correctly on QNX? Or can I compile Emscripten with q++ on QNX and create the webassemby directly on the QNX system? I'm not sure I understood it correctly. But it seems like Emscripten should be able to compile and run on any system that can use LLVM, which QNX does. Can anyone with a bit more QNX knowledge confirm if this might be possible or not?

I have a website that I put together using a website builder, as opposed to hosting it on a private server. In simple terms, I'm wondering if there's a way to use terminal to keep an eye on how many people are visiting the website. Doesn't need to be anything fancy, just a simple count of the visitors to the domain.

I am looking at making an application that would make OpenID authentication with desktop clients easy. The rationale is to steal the cookies from the web-browser, so as to avoid having to hard-code authentication to every possible OpenID provider. Assuming the user has already logged on to the OpenID provider, the application clones the cookies from the default browser, and requests authentication to the desired service with the appropriate OpenID URL. To make this application usable, I need to know what are the most commonly used web browsers used on Linux, possibly with statistical evidence. I assume that Firefox and Chromium are the two most popular at the moment. *NB: the title of this question was edited in view of the emphasis by respondents on security and standards.*

I'm trying to buy a product on https://qinao.de/ with my (Arch) Linux laptop and different Browsers (Chrome, Firefox). But I can't add products to the Cart (and some images don't load). It works fine on my mobile phone, and on my friends' laptops with Windows and Mac. I've never seen anything like this. Can anybody with Linux confirm this, and perhaps can decode the error messages on the Developer console? Shouldn't the functioning of a website depend entirely on the browser and not the operating system? Thank you!

Need to download the entire website tree structure with directory/files names, but without download files - just structure. like this:

www.example.com
 |
  dir1
   | file1.txt
     file2.txt

  dir2
   | file3.txt
   | file4.txt

When I use wget --mirror it downloas files

wget --mirror  http://www.example.com 

My understanding is that custom/non-distro software should be installed in /opt. However in a Django deployment tutorial [[1] ] I found a suggestion to install a Django webapp to /srv which is described as containing site-specific data which is served by the system. Should non-distro webapps be installed in /opt or /srv?