New Linux Users Group (NEWLINUX)
www.newlinux.org
__25_November_2025__
6:30 ~ 9:00 PM ( Central Daylight Time, USA )
**We will open the remote session by about 6:00 PM CDT**
**Join early to test your microphone, screen and video sharing**
**** Microphone Or Webcam Are Not Required To Join ****
Join ZOOM Meeting with this direct link:
> https://us06web.zoom.us/j/85757447745?pwd=MMabpNMIbk5RU2fg6OLDtbKfyBlv7X.1
The NewLinux Linux Users Group is for all new beginner level users.
One-on-one help available for anyone curious about or new to Linux.
You are invited to attend this next ONLINE session, in lieu of any
regular physical face-to-face meeting. Further instructions below.
* ONLINE Sessions
* NO PHYSICAL MEETINGS until further notice.
* ONLINE session will use ZOOM remote video service 25 November 2025.
--- invite start ---
Omnitec Corporation is sponsoring this scheduled ZOOM meeting.
https://www.omnitec.net/
Topic: Whatever the New Linux User Wants to Know (NEWLINUX)
Time: Nov 25, 2025 18:00 Central Time (US and Canada)
Join Zoom Meeting
> https://us06web.zoom.us/j/85757447745?pwd=MMabpNMIbk5RU2fg6OLDtbKfyBlv7X.1
---
Meeting ID: 857 5744 7745
Passcode: 033131
---
One tap mobile
+13126266799,,85757447745# US (Chicago)
+16465588656,,85757447745# US (New York)
---
Join instructions
https://us06web.zoom.us/meetings/85757447745/invitations?signature=xg4g_iCj…
--- invite end ---
FOR MORE INFORMATION:
> www.newlinux.orgwww.sluug.org
-- End-Of-File --
St. Louis Linux Users Group (STLLINUX)
www.stllinux.org
__20_November_2025__
6:30 ~ 9:00 PM ( Central Daylight Time, USA )
**We will open the remote session at about 6:00 PM**
**Join early to test your microphone, screen and video sharing**
**** Microphone Or Webcam Are Not Required To Join ****
TOPIC: One ~ Free Linux Environments in the Cloud
TOPIC: Two ~ DuckDB: SQLite for Analytics
Presenter: Robert Citek
Join Zoom Meeting
> https://us06web.zoom.us/j/85242797448?pwd=D9fDQp9aRz2eQmCgbMlUsdQcdR6XQv.1
The Saint Louis Linux Users Group (STLLINUX) is a non-profit, volunteer
group that provides education, information and support for Linux users.
You are invited to attend this next ONLINE session, in lieu of any
regular physical face-to-face meeting. Instructions are below.
* ONLINE Sessions
* NO PHYSICAL MEETINGS until further notice.
* ONLINE session will use ZOOM remote video service 20 November 2025.
--- invite start ---
Omnitec Corporation is sponsoring this scheduled ZOOM meeting.
www.omnitec.net
TOPIC: One ~ Free Linux Environments in the Cloud
TOPIC: Two ~ DuckDB: SQLite for Analytics
Time: Nov 20, 2025 18:00 Central Time (US and Canada)
Join Zoom Meeting
> https://us06web.zoom.us/j/85242797448?pwd=D9fDQp9aRz2eQmCgbMlUsdQcdR6XQv.1
Meeting ID: 852 4279 7448
Passcode: 513182
One tap mobile
+13017158592,,85242797448# US (Washington DC)
+13052241968,,85242797448# US
Join instructions
> https://us06web.zoom.us/meetings/85242797448/invitations?signature=jaHAovw0…
--- invite end ---
FOR MORE INFORMATION:
> www.stllinux.orgwww.sluug.org
-- End-Of-File --
St. Louis Unix Users Group (SLUUG)
https://www.sluug.org/
__12_November_2025__
6:30 ~ 9:00 PM (Central Daylight Time, USA).
**We will open the remote session at about 6:00 PM**
**Join early to test your microphone, screen and video sharing**
**** Microphone Or Webcam Are Not Required to Join ****
This session can use the following link:
> https://us06web.zoom.us/j/85852756629?pwd=ZYtQrnlO9Y0eLgg35I8sO204Tj44bs.1
BASE Troubleshooting with a Round Robin DB by Grant Taylor
MAIN Evolving "ifconfig and route" to "ip route" by Lee_Lammert
We are a not-for-profit professional association dedicated to education
and communication among computer users. Networking experts, System
experts, hobbyists, students, plus many who are interested in Unix,
Unix-like Operating Systems, Linux, BSD and other Free Open Source
Software (FOSS) applications, products, projects, and services.
You are invited to attend this next ONLINE session, in lieu of any
regular physical face-to-face meeting. Further instructions below.
* ONLINE Sessions
* ONLINE session will use ZOOM remote video service 12 November 2025.
* NO PHYSICAL MEETING ( until further notice )
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6:00pm Join early to start testing. During this period others may be
able to help you test.
You may be muted on entry, so join early if you want to start testing
of controls, hearing, screen sharing and speaking. You can use use Alt+A
to unmute or mute your audio. Space bar too.
Your best experience might be with a Chromium based web browser.
Joining without ear buds, earphones or headset may result in a feedback
loop with a builtin laptop microphone. Using at-least earbuds is highly
recommended. Wired Ethernet is much better than WiFi connectivity.
######################################################################
IMPORTANT TO US:
We prefer that you set your identity to show first name and last name.
Instead of full last name you could just follow your first name with
an initial.
======================================================================
OmniTec Corporation is sponsoring this scheduled ZOOM meeting.
https://omnitec.net/
The Saint Louis Unix Users Group (SLUUG) Meeting
On the Second Wednesday of every month
Topic: Saint Louis Unix Users Group (SLUUG)
Time: November 12, 2025 18:30 Central Time (US and Canada)
**We will open the remote session at about 6:00 PM**
Join Zoom Meeting
> https://us06web.zoom.us/j/85852756629?pwd=ZYtQrnlO9Y0eLgg35I8sO204Tj44bs.1
Meeting ID: 858 5275 6629
Passcode: 816883
One tap mobile
+13126266799,,85852756629# US (Chicago)
+16465588656,,85852756629# US (New York)
Join instructions
https://us06web.zoom.us/meetings/85852756629/invitations?signature=agsFru3s…
FOR MORE INFORMATION:
> www.sluug.org
=== End of File ===
Wed @ 6:30 & 7"15 is the monthly general "Stl Linux Unix Users Group" mtng.
https://www.meetup.com/saint-louis-unix-users-group/events/311956042/
Learn how to replace deprecated "ifconfig, route, & netstat" commands with
the modern "ip & ss" commands. Clearer output, better troubleshooting, full
IPv6 support, and future-proof networking.
*"ip: Because Real Admins Don't Use ifconfig Anymore"*
*MAIN Topic:* Evolving "ifconfig & route" to "ip route"
Speaker: Lee_Lammert
<https://www.google.com/url?q=https://www.sluug.org/bio/Lee_Lammert&sa=D&sou…>
.
The above MAIN is at ~7:15pm. It is immediately PRECEDED at
~7:00pm by Announcements & short Q&A which is immediately preceeded at
6:30pm by
*BASIC Tutorial:* Troubleshooting with a Round Robin DB by Grant Taylo
<https://www.google.com/url?q=https://www.sluug.org/bio/Grant_Taylor&sa=D&so…>
r
- For the last week or so I've been spending a lot of time recording
statistics in Round Robin Databases (RRD files) and generating graphs of
things as I try to troubleshoot some problems with the Nagios server at
work.
-
- This morning I spent some time writing some Perl to parse the
output of `netstat --all --numeric --tcp --udp` to calculate the number
of connections in various states, both inbound and outbound.
- I have something like 27 different data points that I'm graphing.
-
- As has been the case with three other (sets of) graphs that I've
created for this, I've asked questions within a few minutes of looking
at -> consuming -> using the graphs.
-
- I first started collecting, recording, and graphing the number of
Nagios tests that were in the `Unknown` (3) state.
- That turned out to be quite enlightening.
- We were seeing periodic rapid swings from a few hundred to nearly
two thousand tests in the `Unknown` (3) state.
- The visual nature of the graph showed that the number of tests in
the `Unknown` (3) state was ebbing and flowing.
- It also showed some atypical / jittery / not-smooth spikes as
opposed to the ramp-up / ramp-down that one might expect.
- As in nearly triple in a matter of a few minutes and then taper
back down a few minutes later.
-
- It turns out that Gearman / gearmand -- which we're using behind
Nagios for ${QUESTIONABLE_REASONS} -- was running out of file
descriptors.
- Once I raised the max file handles in the systemd unit file, things
were much smoother.
- So I started collecting, recording, and graphing the number of open
file descriptors.
- That too was quite telling.
-
- Gearman / gearmand was averaging about 1200 file descriptors
ranging from a few hundred to upwards of 1800.
- While working on the file descriptor problem I noticed that
connections to Gearman / gearmand would block until there was a free
file descriptor to accept the connection.
- Remember, TCP connections use a file descriptor.
-
- Knowing that slow connections to Gearman / gearmand were a symptom, I
started collecting, recording, and graphing connection latency. That graph
didn't show much of a symptom to chase. But it did provide a LOT of data in
that I now know that the vast majority of the time, connections to Gearman
/ gearmand take < 20 ms.
-
- So I have statistics / data to back monitoring -> alerting thresholds.
- I noticed that the number of open file descriptors drops from
nominally 1200 to below 500 during times that we're having problems.
- So, this morning I wrote about 210 lines of Perl to parse the
output of `netstat --all --numeric --tcp --udp` to collect and record
connection data.
-
- Graphing of said connection data yielded questions in a matter of
minutes. Not the least of which is that the vast majority of the
connections are inbound to Gearman / gearmand, not outbound like I thought
they were.
-
- I determined inbound vs outbound by looking at the listening
sockets in the `netstat` output. I defined listening as the remote IP
being 0.0.0.0 (IPv4) or ::(IPv6) and the ports thereon to be `*`.
-
- Knowing what is listening allowed me to compare the local IP & port
connections use with the list of listeners.
-
- If the local IP & port is a listener, then the connection is an
inbound connection.
- If the local IP & port isn't a listener, then the connection is an
outbound connection.
- So now I have more data and am effectively waiting for a problem
event to analyze the data that I'm collecting during the event for a
problematic time-frame after-the-fact.
The above are both Wed 12 Nov 2025 =≠=≠=≠=≠≠≠====≠EVERY MONTH:[
http://www.sluug.org/](https://www.google.com/url?q=http://www.sluug.org/&sa=D&source=calendar&usd…
)The URL link to Zoom or Jitsi connection instructions for this meetng is
posted earlier on the day of the meetng, at the above home page. It is the
link called "linked here".
Saint Louis Area Computer Club (SLACC)
www.slacc.orgslacc.sluug.org
___6_November_2025__
6:30 ~ 9:00 PM ( Central Standard Time, USA )
**We will open the remote session at about 6:00 PM**
**Join early to test your microphone, screen and video sharing**
**** Microphone Or Webcam Are Not Required to Join ****
This ZOOM session will use the following link:
> https://us06web.zoom.us/j/84757521886?pwd=ITYTQTrCzmwYtWUznHVmLrVuMw0HnD.1
The extant Saint Louis Area Computer Club (SLACC) is the oldest,
longest enduring, continuously meeting personal computer organization
active in the Greater St. Louis Area.
You are invited to attend this next ONLINE session, in lieu of any
regular physical face-to-face meeting. Further instructions below.
* ONLINE Sessions
* NO PHYSICAL MEETINGS until further notice.
* ONLINE session will use ZOOM remote video service 6 November 2025.
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
You do not have to have a microphone and webcamera to participate. You
can just chat, listen and watch using a Chrome based browser. We suggest
that you clear browser cache and cookies before starting any session.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
RECOMMENDED CLIENT TESTING:
We will open the remote session by about 6:00 PM, Central Standard Time.
Join early to test your controls, hearing (sound), video screen sharing
and microphone (speaking). You might be muted on entry.
During this half hour test period others may be able to help you.
Joining without ear buds, earphones or headset can result in a feedback
loop with a builtin laptop microphone. Using at least earbuds is highly
recommended. Wired Ethernet is always better than WiFi connectivity.
If you do not take the time and make the effort to get your connection
working correctly, you may be very disruptive. Annoying disruptions
may cause you to be kicked off the session.
Try dropping your connection and rejoin. That sometimes fixes issues;
but, do so slowly, as granting access to your microphone and camera too
quickly is the current main problem. Also, there are often sound
settings in different browsers that may need to be changed.
======================================================================
WHEN YOU ENTER THIS ONLINE SESSION:
6:00 PM Join early.
Please set your identity to show first name and last name. Instead of
full last name you could just follow first name with an initial. We
do prefer that you use your full last name.
Please hold you questions until after start of the meeting.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6:30 PM Start of meeting.
Anybody joining after 6:30pm that experiences issues with controls,
hearing, screen sharing or speaking should only use chat room to ask
questions or make comments. Disconnecting and reconnecting usually
fixes issues from an initial problem session.
All may be muted at this point. You will have to unmute yourself in
order to speak. You can ask questions and make comments in chat room.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
ORDER OF EVENTS:
First some simple introductions, administrative minutia, announcements,
and then you can Call-For-Help during our Questions-and-Answers period.
Sometimes we may watch a video or have a slide show presentation,
after which there will be general discussions that usually lead to
additional topics.
Sometimes, there can be a live demonstration of a Linux distribution
(distro) installation, updating, changes, features and applications.
$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
TOPICS:
We usually hold a Hardware and Software Configuration Workshop when
nothing else more interesting comes up, or when there is no other
event or activity scheduled. This is an open free format workshop.
In this workshop we usually assess, configure, examine, fix, install,
repair, and troubleshoot difficult hardware and software configuration
problems for Linux newcomers. Problems with other operating systems and
hardware are also frequently fixed.
======================================================================
OmniTec Corporation is sponsoring this scheduled ZOOM meeting.
https://omnitec.net/
The Saint Louis Area Computer Club (SLACC) Meeting
Usually On the First Thursday of every month
Topic: Hardware and Software Configuration. Vendor Agnostic.
Time: November 6, 2025 18:00 Central Time (US and Canada)
Join Zoom Meeting
> https://us06web.zoom.us/j/84757521886?pwd=ITYTQTrCzmwYtWUznHVmLrVuMw0HnD.1
Meeting ID: 847 5752 1886
Passcode: 178113
---
One tap mobile
+13092053325,,84757521886# US
+13126266799,,84757521886# US (Chicago)
---
Join instructions
> https://us06web.zoom.us/meetings/84757521886/invitations?signature=-4yTV9_8…
FOR MORE INFORMATION:
> www.slacc.orgslacc.sluug.org
-- EOF --
