Re: [PLUG] Interest in high availability clustering talk?
Sounds fun. Bonus points if it incorporates DRBD from the talk a few months ago. -Ben Sent from ProtonMail mobile Original Message On Jan 29, 2024, 10:53 PM, Russell Senior wrote: > +1 vote from me. On Mon, Jan 29, 2024 at 10:47 PM Reid wrote: > Would there > be any interest in a talk, demo, or workshop/troubleshooting > session on > high availability clustering? The format and content would be > flexible > depending on what people want and what's relevant to you all. I'm > a > maintainer of the open source Pacemaker cluster resource manager, and I > > worked in backline support for it for a few years prior. > > > https://clusterlabs.org/pacemaker/ > > Regards, > > Reid Wahl (he/him) > > > Sent with [Proton Mail](https://proton.me/) secure email.
Re: [PLUG] February PLUG?
Sounds good. I'm looking forward to it. On January 29, 2024 10:38:18 PM PST, Michael Dexter wrote: >On 1/29/24 5:14 PM, Ted Mittelstaedt wrote: >> Well it's a hack and a half and I'm sure if I show it I'll be sent to >> Linux hell, but I could do a presentation on "Bandwidth monitoring >> OpenWRT and DD-WRT routers with MRTG" > >Having you Ted there would be great because you sent me down this path. :-) > >My first 15 minutes would be a tirade, then some mitigations... then you could >take it from there. > >What say y'all? > >Michael
Re: [PLUG] Interest in high availability clustering talk?
+1 vote from me. On Mon, Jan 29, 2024 at 10:47 PM Reid wrote: > Would there be any interest in a talk, demo, or workshop/troubleshooting > session on high availability clustering? The format and content would be > flexible depending on what people want and what's relevant to you all. I'm > a maintainer of the open source Pacemaker cluster resource manager, and I > worked in backline support for it for a few years prior. > > https://clusterlabs.org/pacemaker/ > > Regards, > > Reid Wahl (he/him) > > Sent with [Proton Mail](https://proton.me/) secure email.
[PLUG] Interest in high availability clustering talk?
Would there be any interest in a talk, demo, or workshop/troubleshooting session on high availability clustering? The format and content would be flexible depending on what people want and what's relevant to you all. I'm a maintainer of the open source Pacemaker cluster resource manager, and I worked in backline support for it for a few years prior. https://clusterlabs.org/pacemaker/ Regards, Reid Wahl (he/him) Sent with [Proton Mail](https://proton.me/) secure email.
Re: [PLUG] February PLUG?
On 1/29/24 5:14 PM, Ted Mittelstaedt wrote: Well it's a hack and a half and I'm sure if I show it I'll be sent to Linux hell, but I could do a presentation on "Bandwidth monitoring OpenWRT and DD-WRT routers with MRTG" Having you Ted there would be great because you sent me down this path. :-) My first 15 minutes would be a tirade, then some mitigations... then you could take it from there. What say y'all? Michael
Re: [PLUG] February PLUG?
Well it's a hack and a half and I'm sure if I show it I'll be sent to Linux hell, but I could do a presentation on "Bandwidth monitoring OpenWRT and DD-WRT routers with MRTG" Ted -Original Message- From: PLUG On Behalf Of Michael Dexter Sent: Monday, January 29, 2024 3:25 PM To: Portland Linux/Unix Group Subject: [PLUG] February PLUG? Hey. I had to slay some dragons in December and early January. The Center is available Thursday if we want it. I am happy to talk about managing/containing Windows on something other than Windows, but I also all ears for what you want to talk about. Perhaps a show and tell session? I'll check this mail. I swear. Michael Dexter Kinda Sorta PLUG and Stuff
[PLUG] February PLUG?
Hey. I had to slay some dragons in December and early January. The Center is available Thursday if we want it. I am happy to talk about managing/containing Windows on something other than Windows, but I also all ears for what you want to talk about. Perhaps a show and tell session? I'll check this mail. I swear. Michael Dexter Kinda Sorta PLUG and Stuff
Re: [PLUG] SSL/TSL only for web sites?
On Mon, 29 Jan 2024, Paul Heinlein wrote: If you're sending via Postfix, no, you don't need them for SMTP stuff. Postfix itself can be configured to use SSL/TLS, but that's completely separate from what you're trying to accomplish. Paul, Thank you. I just found that I don't need them when reading about the Python modules. Much appreciated, Rich
Re: [PLUG] SSL/TSL only for web sites?
On Mon, 29 Jan 2024, Rich Shepard wrote: I'm developing a Python script to send email messages. Researching SSL/TLS on the web suggests that these are used with web applications (along with HTTPS). Since I'm sending messages from the command line (or Python script) out through my local Postfix MTA, are these security layers necessary or needed? If you're sending via Postfix, no, you don't need them for SMTP stuff. Postfix itself can be configured to use SSL/TLS, but that's completely separate from what you're trying to accomplish. -- Paul Heinlein heinl...@madboa.com 45°22'48" N, 122°35'36" W
[PLUG] SSL/TSL only for web sites?
I'm developing a Python script to send email messages. Researching SSL/TLS on the web suggests that these are used with web applications (along with HTTPS). Since I'm sending messages from the command line (or Python script) out through my local Postfix MTA, are these security layers necessary or needed? I've not seen an answer in my web searches. TIA, Rich
Re: [PLUG] Cable tester
It depends on what you are needing to do. If you are installing new cabling then the cheap $50 from Ebay will work: https://www.ebay.com/itm/145198295238 If you are working with old existing work then you need a TDR. The reason is because IF the cable you are trying to find with a toner is shorted anywhere on it's length, then the tone generated from the toner will fall off very rapidly in intensity the further you get from the tone source. So you will need to check for a short first. Toners only work well for tracing wire if the end of the wire is not connected to anything. I've used the cheapie to find wires buried in walls behind drywall. The wire was not shorted. The worst would be finding a wire in a wall that had had a nail driven into it. Unless you have a wiring layout for the building, where the wires were run, a TDR will only tell you how far away the nail is, it won't tell you what direction. You just have to get lucky and hope that 1 or 2 conductors are left in the wire that are not shorted. Ted -Original Message- From: PLUG On Behalf Of mo Sent: Monday, January 29, 2024 9:21 AM To: Portland Linux/Unix Group Subject: [PLUG] Cable tester Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! How should I choose one? What features, brands, etc do you recommend? My bldg has up to 100' of cat5e I think. I'd like one I keep for future use with different wiring (RJ11, cat6 7, etc). Idk what other features to look for in such an item. I want to test for cable quality, connectivity, speed, etc as well as locating which cable terminates where (if all that's possible).
Re: [PLUG] Cable tester
Yeah, unless you are going to go the route of having the tool calibrated every 6 months, the best you are ever going to get out of any electronic measuring device is "good enough for government work" Don't fall for the "super accurate" snow job from the salesguys at Fluke. The only difference the extra money buys you is that the Fluke CAN be calibrated. At least I assume it can. For sure their expensive stuff can be, don't know about the "cheaper" field stuff. All of the measuring devices on the market that measure the more advanced stuff also show the simpler stuff. The Pentascanner does the same. It's important to know that you can only measure a miswire if you have plugged the termination device into the other end of the cable, this is true for all of the models on the market Another consideration I have also had when working on this stuff for customers is having the expensive stuff get stolen. I've had toolbags stolen several times and more importantly I've accidentally forgotten tools at a job then remembered later and gone back for them only to find they had disappeared. I learned only to carry the absolute cheapest crap tools that will barely work. (that's an old trick from a lot of tradespeople) That's why I never carried the Pentascanner unless it was on a special job. The Pentascanner when it was new, decades ago, was in the multi-thousand dollar range. They still fetch a lot on Ebay maybe I should sell mine Ted Obviously if you have a large wiring -Original Message- From: PLUG On Behalf Of Russell Senior Sent: Monday, January 29, 2024 10:40 AM To: Portland Linux/Unix Group Subject: Re: [PLUG] Cable tester The fluke ms2 also shows miswiring, whether you are plugged into a transceiver, or your remote, etc. We've been happy with it. I am sure you can find non-fluke for less, but when you are measuring things, it is nice, and an inferential leg up, to know you are probably measuring them correctly. On Mon, Jan 29, 2024 at 10:34 AM Ted Mittelstaedt wrote: > The problem with a TDR is it's only good if you shorted or opened a > cable. My problem has always been pair reversals on building cables > and a TDR is useless for that. I have a Pentascanner that I used to > use for this kind of thing and the only use I got out of it was > discovering a split pair one time at a customer site that was left > over from years earlier when someone had run voice on that cable. But > keeping the battery packs working on the thing was a nuisance so I > switched over to the $20 chinese pair scanner thing years ago. > > It's also worth noting you can buy a TDR for $100 off Ebay. Chinese > made of course. > > Ted > > -Original Message- > From: PLUG On Behalf Of Russell > Senior > Sent: Monday, January 29, 2024 10:16 AM > To: Portland Linux/Unix Group > Subject: Re: [PLUG] Cable tester > > For years, we got away with a cheapo $20 continuity tester for > checking Ethernet cables. The problem with them was that, yeah, sure, > they would tell you if you had shorts or opens, but they did not tell > you where. Cable itself tends to be pretty reliably connected end to > end, but when you have crimped both ends and you find a short or open > with a continuity tester, you have almost no idea which end you > screwed up. You look very closely at the crimped ends, decide which > one looks sketchier, cut it off and try again more carefully, then rinse and > repeat. > > A few years ago, after suffering this problem for over a decade, we > finally invested in a fluke microscanner2. It does time domain > reflectometry, and can tell you, pair-by-pair, whether it has > continuity and crucially, if it does not, how far down the wire the fault > occurs. > Suddenly, we know which end has the fault! If we stabbed the cable to > death with hoop staples and there is a mid span fault, we know that. > It cost us $500. It wasn't their fanciest model, but it has been such > an improvement in reliability and visibility. > > -- > Russell Senior > russ...@personaltelco.net > > On Mon, Jan 29, 2024, 09:21 mo wrote: > > > Hi. I need to buy a cat5 cable tester aka tone detector. There are > > so > many! > > How should I choose one? What features, brands, etc do you recommend? > > > > My bldg has up to 100' of cat5e I think. I'd like one I keep for > > future use with different wiring (RJ11, cat6 7, etc). Idk what other > > features to look for in such an item. I want to test for cable > > quality, connectivity, speed, etc as well as locating which cable > > terminates where (if all that's possible). > > > >
Re: [PLUG] Cable tester
The fluke ms2 also shows miswiring, whether you are plugged into a transceiver, or your remote, etc. We've been happy with it. I am sure you can find non-fluke for less, but when you are measuring things, it is nice, and an inferential leg up, to know you are probably measuring them correctly. On Mon, Jan 29, 2024 at 10:34 AM Ted Mittelstaedt wrote: > The problem with a TDR is it's only good if you shorted or opened a > cable. My problem has always been pair reversals on building cables and a > TDR is useless for that. I have a Pentascanner that I used to use for this > kind of thing and the only use I got out of it was discovering a split pair > one time at a customer site that was left over from years earlier when > someone had run voice on that cable. But keeping the battery packs working > on the thing was a nuisance so I switched over to the $20 chinese pair > scanner thing years ago. > > It's also worth noting you can buy a TDR for $100 off Ebay. Chinese made > of course. > > Ted > > -Original Message- > From: PLUG On Behalf Of Russell Senior > Sent: Monday, January 29, 2024 10:16 AM > To: Portland Linux/Unix Group > Subject: Re: [PLUG] Cable tester > > For years, we got away with a cheapo $20 continuity tester for checking > Ethernet cables. The problem with them was that, yeah, sure, they would > tell you if you had shorts or opens, but they did not tell you where. Cable > itself tends to be pretty reliably connected end to end, but when you have > crimped both ends and you find a short or open with a continuity tester, > you have almost no idea which end you screwed up. You look very closely at > the crimped ends, decide which one looks sketchier, cut it off and try > again more carefully, then rinse and repeat. > > A few years ago, after suffering this problem for over a decade, we > finally invested in a fluke microscanner2. It does time domain > reflectometry, and can tell you, pair-by-pair, whether it has continuity > and crucially, if it does not, how far down the wire the fault occurs. > Suddenly, we know which end has the fault! If we stabbed the cable to death > with hoop staples and there is a mid span fault, we know that. It cost us > $500. It wasn't their fanciest model, but it has been such an improvement > in reliability and visibility. > > -- > Russell Senior > russ...@personaltelco.net > > On Mon, Jan 29, 2024, 09:21 mo wrote: > > > Hi. I need to buy a cat5 cable tester aka tone detector. There are so > many! > > How should I choose one? What features, brands, etc do you recommend? > > > > My bldg has up to 100' of cat5e I think. I'd like one I keep for > > future use with different wiring (RJ11, cat6 7, etc). Idk what other > > features to look for in such an item. I want to test for cable > > quality, connectivity, speed, etc as well as locating which cable > > terminates where (if all that's possible). > > > >
Re: [PLUG] Cable tester
The problem with a TDR is it's only good if you shorted or opened a cable. My problem has always been pair reversals on building cables and a TDR is useless for that. I have a Pentascanner that I used to use for this kind of thing and the only use I got out of it was discovering a split pair one time at a customer site that was left over from years earlier when someone had run voice on that cable. But keeping the battery packs working on the thing was a nuisance so I switched over to the $20 chinese pair scanner thing years ago. It's also worth noting you can buy a TDR for $100 off Ebay. Chinese made of course. Ted -Original Message- From: PLUG On Behalf Of Russell Senior Sent: Monday, January 29, 2024 10:16 AM To: Portland Linux/Unix Group Subject: Re: [PLUG] Cable tester For years, we got away with a cheapo $20 continuity tester for checking Ethernet cables. The problem with them was that, yeah, sure, they would tell you if you had shorts or opens, but they did not tell you where. Cable itself tends to be pretty reliably connected end to end, but when you have crimped both ends and you find a short or open with a continuity tester, you have almost no idea which end you screwed up. You look very closely at the crimped ends, decide which one looks sketchier, cut it off and try again more carefully, then rinse and repeat. A few years ago, after suffering this problem for over a decade, we finally invested in a fluke microscanner2. It does time domain reflectometry, and can tell you, pair-by-pair, whether it has continuity and crucially, if it does not, how far down the wire the fault occurs. Suddenly, we know which end has the fault! If we stabbed the cable to death with hoop staples and there is a mid span fault, we know that. It cost us $500. It wasn't their fanciest model, but it has been such an improvement in reliability and visibility. -- Russell Senior russ...@personaltelco.net On Mon, Jan 29, 2024, 09:21 mo wrote: > Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! > How should I choose one? What features, brands, etc do you recommend? > > My bldg has up to 100' of cat5e I think. I'd like one I keep for > future use with different wiring (RJ11, cat6 7, etc). Idk what other > features to look for in such an item. I want to test for cable > quality, connectivity, speed, etc as well as locating which cable > terminates where (if all that's possible). >
Re: [PLUG] Cable tester
For years, we got away with a cheapo $20 continuity tester for checking Ethernet cables. The problem with them was that, yeah, sure, they would tell you if you had shorts or opens, but they did not tell you where. Cable itself tends to be pretty reliably connected end to end, but when you have crimped both ends and you find a short or open with a continuity tester, you have almost no idea which end you screwed up. You look very closely at the crimped ends, decide which one looks sketchier, cut it off and try again more carefully, then rinse and repeat. A few years ago, after suffering this problem for over a decade, we finally invested in a fluke microscanner2. It does time domain reflectometry, and can tell you, pair-by-pair, whether it has continuity and crucially, if it does not, how far down the wire the fault occurs. Suddenly, we know which end has the fault! If we stabbed the cable to death with hoop staples and there is a mid span fault, we know that. It cost us $500. It wasn't their fanciest model, but it has been such an improvement in reliability and visibility. -- Russell Senior russ...@personaltelco.net On Mon, Jan 29, 2024, 09:21 mo wrote: > Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! > How should I choose one? What features, brands, etc do you recommend? > > My bldg has up to 100' of cat5e I think. I'd like one I keep for future use > with different wiring (RJ11, cat6 7, etc). Idk what other features to look > for in such an item. I want to test for cable quality, connectivity, speed, > etc as well as locating which cable terminates where (if all that's > possible). >
Re: [PLUG] Cable tester
On Mon, 29 Jan 2024, mo wrote: Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! How should I choose one? What features, brands, etc do you recommend? mo, I've used a fox & hound audio cable tester for phone lines with RJ-11 plugs since I moved into this house 31 years ago. Without fetching it now I assume it can work with computer data cables and RJ-45 plugs, perhaps needing an adapter. HTH, Rich
Re: [PLUG] Cable tester
I do not have a specific recommendation, other than do not go cheap. On Mon, Jan 29, 2024 at 9:21 AM mo wrote: > Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! > How should I choose one? What features, brands, etc do you recommend? > > My bldg has up to 100' of cat5e I think. I'd like one I keep for future use > with different wiring (RJ11, cat6 7, etc). Idk what other features to look > for in such an item. I want to test for cable quality, connectivity, speed, > etc as well as locating which cable terminates where (if all that's > possible). >
[PLUG] Cable tester
Hi. I need to buy a cat5 cable tester aka tone detector. There are so many! How should I choose one? What features, brands, etc do you recommend? My bldg has up to 100' of cat5e I think. I'd like one I keep for future use with different wiring (RJ11, cat6 7, etc). Idk what other features to look for in such an item. I want to test for cable quality, connectivity, speed, etc as well as locating which cable terminates where (if all that's possible).
Re: [PLUG] Edit PDF
On Mon, 29 Jan 2024, Charles Sliger wrote: You basically have to do the layout and formatting manually. I use it frequently to edit invoices and receipts that come in pdf form so that they print on a single page. I change the page layout to landscape, use snap lines, change font size, etc. Charles, Take a look at pdfjam. The man page begins with pdfjam(1) pdfjam(1) NAME pdfjam - A shell script for manipulating PDF files SYNOPSIS pdfjam [OPTION [OPTION] ...] [SRC [PAGESPEC] [SRC [PAGESPEC]] ...] DESCRIPTION pdfjam provides a front end to most capabilities of the "pdfpages" package (by Andreas Matthias) of pdflatex. Detailed information can be found via "pdfjam --help", and also in the web page mentioned below . A working installation of pdflatex, with the pdfpages package, is required. The pdfjam script is distributed as (the main) part of the pdfjam package. The homepage of pdfjam is at https://github.com/rrthomas/pdfjam . SETUP See https://github.com/rrthomas/pdfjam I use it to resize PDF web page downloads to letter size, and a few other things. Regards, Rich
Re: [PLUG] Edit PDF
Yes masterpdf is way better then. On Mon, Jan 29, 2024, 08:40 Charles Sliger wrote: > Not really. :) > You have to put newlines in. > You basically have to do the layout and formatting manually. > I use it frequently to edit invoices and receipts that come in pdf form > so that they print on a single page. > I change the page layout to landscape, use snap lines, change font > size, etc. > -- > -chaz > Charles Sliger > "No matter where you go... There you are... Buckaroo Banzai" > > > > On Sun, 2024-01-28 at 11:15 -0800, mo wrote: > > Libreoffice draw can edit the text already on a PDF? Does it > > automatically > > adhere to text cell borders aka wrap the text as expected? > > > > On Sun, Jan 28, 2024, 09:50 Charles Sliger > > wrote: > > > > > > > > For quick, simple edits, I use LibreOffice Draw. > > > You can open a pdf, move things around, edit text, etc. > > > When you're done, just choose 'Export as PDF" from the "File" menu. > > > -- > > > -chaz > > > Charles Sliger > > > "No matter where you go... There you are... Buckaroo Banzai" > > > > > > > > > > > > On Sat, 2024-01-27 at 16:44 -0800, VY wrote: > > > > > > > > Dear All > > > > > > > > I am looking for some tools on Linux I can use to edit PDF > > > > documents. > > > > Any recommendation much appreciated! > > > > > > > > Thanks > > > > > > > > -Vincent >
Re: [PLUG] Edit PDF
Not really. :) You have to put newlines in. You basically have to do the layout and formatting manually. I use it frequently to edit invoices and receipts that come in pdf form so that they print on a single page. I change the page layout to landscape, use snap lines, change font size, etc. -- -chaz Charles Sliger "No matter where you go... There you are... Buckaroo Banzai" On Sun, 2024-01-28 at 11:15 -0800, mo wrote: > Libreoffice draw can edit the text already on a PDF? Does it > automatically > adhere to text cell borders aka wrap the text as expected? > > On Sun, Jan 28, 2024, 09:50 Charles Sliger > wrote: > > > > > For quick, simple edits, I use LibreOffice Draw. > > You can open a pdf, move things around, edit text, etc. > > When you're done, just choose 'Export as PDF" from the "File" menu. > > -- > > -chaz > > Charles Sliger > > "No matter where you go... There you are... Buckaroo Banzai" > > > > > > > > On Sat, 2024-01-27 at 16:44 -0800, VY wrote: > > > > > > Dear All > > > > > > I am looking for some tools on Linux I can use to edit PDF > > > documents. > > > Any recommendation much appreciated! > > > > > > Thanks > > > > > > -Vincent
