From bob at ucc.gu.uwa.edu.au Mon Mar 5 21:07:17 2018 From: bob at ucc.gu.uwa.edu.au (bob at ucc.gu.uwa.edu.au) Date: Mon, 5 Mar 2018 21:07:17 +0800 (AWST) Subject: [tech] Aircon Message-ID: Hi All, It looks like kalimari is unhappy - it's only putting out hot air. When this happened with the last kelvinator aircon, the compressor was dead and we were up for a new aircon. It's possible that it just needs pulling apart and cleaning (it has ice-up protection, and the sensor may just be full of crap). We have one of these: https://www.thegoodguys.com.au/kelvinator-c60kw-h55kw-reverse-cycle-box-air-con-kwh62hre ...though given this one only lasted 3 years, I'm not sure we should go for another that's the same. For now we have the aircon in fan-only mode, and the machine room is getting hot, but coping. Andrew Adamson bob at ucc.asn.au |"If you can't beat them, join them, and then beat them." | | ---Peter's Laws | From andrew at ucc.gu.uwa.edu.au Mon Mar 5 22:35:13 2018 From: andrew at ucc.gu.uwa.edu.au (Andrew Williams) Date: Mon, 5 Mar 2018 22:35:13 +0800 Subject: [tech] Password reset Message-ID: <75e955a8-da89-db69-a57e-499771b07da2@ucc.gu.uwa.edu.au> Thanks to Oscar, Zach and John for resetting my password today. BTW, if anyone on wheel/tech/committee is near Curtin any time, and wants to have a look around the CIRA engineering lab in Tech Park, give me an email. I work in the operations centre for the Murchison Widefield Array, a radio telescope 800 km from Perth (a precursor to the Square Kilometre Array). We also have lots of cool hardware in the lab... Andrew From nick at ucc.gu.uwa.edu.au Mon Mar 12 23:43:43 2018 From: nick at ucc.gu.uwa.edu.au (Nick Bannon) Date: Mon, 12 Mar 2018 23:43:43 +0800 Subject: [tech] Serial terminals in the hallway In-Reply-To: <20110929104349.GA28262@ucc.gu.uwa.edu.au> References: <20110929104349.GA28262@ucc.gu.uwa.edu.au> Message-ID: <20180312154343.zro2xbw7b42hwf3w@ucc.gu.uwa.edu.au> On Thu, Sep 29, 2011 at 06:43:49PM +0800, Nick Bannon wrote: > On Thu, Sep 29, 2011 at 05:42:16PM +0800, Luke Williams wrote: > > Merlo is a wheel-only box at the moment. There are a few different > > options for opening the serial terminals to members: > > - Remove the login restrictions. > > That's a pretty good option. It's already a LDAP client, which suprised > me, but I guess dispsrv as it stands needs that. I'd like to see what it > takes to make it work standalone if the network was down. [...] AD, now: root at merlo:/# grep passwd /etc/nsswitch.conf passwd: compat winbind root at merlo:/# getent passwd |wc -l 1298 > > - Create a restricted login environment on merlo (eg: a VM with serial > > passthrough) > Maybe, or something like (thanks [DAA]!): > meersau:/opt/ltsp/i386/usr/share/ltsp/screen.d/ssh > > > - Send the serial data somewhere else. [...] Currently that's a little script: /usr/local/bin/serial-connect #! /bin/sh set -x export TERM=vt510 clear stty igncr # This doesn't work if a default system locale is set # on the target system - thanks Unix. export LANG=en_AU while [ -z "$USRNAME" ] ; do echo "-Welcome to UCC" read -p "Username: " -r USRNAME JUNK done echo "! $USRNAME !" echo "ssh -e none -l \"$USRNAME\" ssh.ucc.asn.au" | hd ssh -e none -l "$USRNAME" ssh.ucc.asn.au ...as invoked from: /etc/systemd/system/serial-getty at ttyS3.service including: # Default template: /lib/systemd/system/serial-getty at .service # http://0pointer.de/blog/projects/serial-console.html [...] ExecStart=-/sbin/getty -n -p -R -l "/usr/local/bin/serial-connect" -L %I 9600 vt510 One bug is that there is a limit to how often systemd will let it respawn and it got stuck in "start-limit-hit" for a bit: root at merlo:/etc/systemd/system# systemctl status serial-getty at ttyS3.service * serial-getty at ttyS3.service - Serial Getty on ttyS3 Loaded: loaded (/etc/systemd/system/serial-getty at ttyS3.service; enabled; vendor preset: enabled) Active: failed (Result: start-limit-hit) since Thu 2018-03-08 17:34:06 AWST; 4 days ago Main PID: 14571 (code=killed, signal=INT) Mar 08 17:34:06 merlo systemd[1]: serial-getty at ttyS3.service: Service hold-off time over, scheduling restart. Mar 08 17:34:06 merlo systemd[1]: Stopped Serial Getty on ttyS3. Mar 08 17:34:06 merlo systemd[1]: serial-getty at ttyS3.service: Start request repeated too quickly. Mar 08 17:34:06 merlo systemd[1]: Failed to start Serial Getty on ttyS3. Mar 08 17:34:06 merlo systemd[1]: serial-getty at ttyS3.service: Unit entered failed state. Mar 08 17:34:06 merlo systemd[1]: serial-getty at ttyS3.service: Failed with result 'start-limit-hit'. root at merlo:/etc/systemd/system# systemctl stop serial-getty at ttyS3.service root at merlo:/etc/systemd/system# systemctl start serial-getty at ttyS3.service root at merlo:/etc/systemd/system# systemctl status serial-getty at ttyS3.service * serial-getty at ttyS3.service - Serial Getty on ttyS3 Loaded: loaded (/etc/systemd/system/serial-getty at ttyS3.service; enabled; vendor preset: enabled) Active: active (running) since Mon 2018-03-12 21:30:03 AWST; 2s ago Main PID: 18881 (serial-connect) Tasks: 1 (limit: 4915) CGroup: /system.slice/system-serial\x2dgetty.slice/serial-getty at ttyS3.service ??18881 /bin/sh /usr/local/bin/serial-connect Mar 12 21:30:03 merlo systemd[1]: Started Serial Getty on ttyS3. It is indeed a: https://terminals-wiki.org/wiki/index.php/DEC_VT510 Software flow control, so 9600bps it is for now. There's also a HP small-form-factor PC, it's not booting (or netbooting) anything interesting right now. They could use a shelf/workstation of some kind, under 78cm to fit the gap between the snack machine and UniSFA's new compactus-style mobile shelving. Perhaps: http://www.ikea.com/au/en/catalog/productAlternative/?partNumber=S99246437 Nick. -- Nick Bannon | "I made this letter longer than usual because nick-sig at rcpt.to | I lack the time to make it shorter." - Pascal From charcoaldragon at hotmail.com Tue Mar 13 22:52:20 2018 From: charcoaldragon at hotmail.com (Thomas Miller) Date: Tue, 13 Mar 2018 14:52:20 +0000 Subject: [tech] Cobra HDD?! Message-ID: FYI: cobra is running a chkdsk. windows claims the total capacity is ~200GB, with ~1GB free we ran windows directory statistics and it only found ~50 GB worth of stuff on the whole disk running theory is that ~150Gb is corrupted copied from IRC / Discord -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20180313/94b9ab2c/attachment.htm From bob at ucc.gu.uwa.edu.au Mon Mar 19 17:30:30 2018 From: bob at ucc.gu.uwa.edu.au (bob at ucc.gu.uwa.edu.au) Date: Mon, 19 Mar 2018 17:30:30 +0800 (AWST) Subject: [tech] Snack Pins not working Message-ID: Hi All, When I got in tonight someone mentioned that pin login wasn't working on the snack machine. Turns out /home wasn't mounted on merlo, despite a 5 day uptime. Does anyone know what may have caused that, or did it simply not mount at boot? Andrew Adamson bob at ucc.asn.au |"If you can't beat them, join them, and then beat them." | | ---Peter's Laws | From 21321809 at student.uwa.edu.au Wed Mar 28 15:35:10 2018 From: 21321809 at student.uwa.edu.au (Blair Johnson) Date: Wed, 28 Mar 2018 15:35:10 +0800 Subject: [tech] Webcams Message-ID: Hi all, I notice that while webcam.ucc.asn.au shows the webcam images, webcams.ucc.asn.au does not, although the webcam*s* address (with an 's') loads the rest of the page. Not sure if webcams.ucc.asn.au is supposed to be defunct (or redirect elsewhere). Cheers, Blair -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20180328/72fde033/attachment.htm From charcoaldragon at hotmail.com Wed Mar 28 16:13:48 2018 From: charcoaldragon at hotmail.com (Thomas Miller) Date: Wed, 28 Mar 2018 08:13:48 +0000 Subject: [tech] Webcams In-Reply-To: References: Message-ID: Yeah I noticed this a few weeks back. Funny thing is clicking through to archives still works on webcamS. Asked goz at the time, said that S is just meant to be an alias /redirect. Solution, use webcam (no s). -------- Original message -------- From: Blair Johnson <21321809 at student.uwa.edu.au> Date: 28/03/2018 15:36 (GMT+08:00) To: tech at ucc.gu.uwa.edu.au Subject: [tech] Webcams Hi all, I notice that while webcam.ucc.asn.au shows the webcam images, webcams.ucc.asn.au does not, although the webcams address (with an 's') loads the rest of the page. Not sure if webcams.ucc.asn.au is supposed to be defunct (or redirect elsewhere). Cheers, Blair -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20180328/6332ece3/attachment.htm From frekk at ucc.asn.au Thu Mar 29 23:21:15 2018 From: frekk at ucc.asn.au (Felix von Perger) Date: Thu, 29 Mar 2018 23:21:15 +0800 Subject: [tech] Project bench cleanup Message-ID: <2d48055d-7fd7-6e25-da0e-0d5285d0b546@ucc.asn.au> Dear tech at ucc.asn.au subscribers, As some of you may be interested to know, the project bench has been cleaned up to some extent with the purpose of making it available as a general workspace to those wish to use the club's tools and resources to work on their own projects. Due to the number of items previously placed on the project bench, space was limited and thus restricted the possibility for club members in general to use it as a working area. The ARM2 and possibly related objects that were located on the project bench in the clubroom have been placed in a plastic container which is located underneath the project bench. The remaining items on the project bench have been removed and placed on shelves and in boxes around the clubroom (such as screens, cables and peripherals) to make more space available on the benchtop. In order to encourage the use of the project bench and the club's extensive repertoire of equipment, it would be greatly appreciated if the space on the projects bench could be kept clean and tidy while not being actively used as a work area. Due to the space restrictions, the use of screens and desktop computers placed permanently on the project bench is discouraged, and it is instead recommended to use the nearby clubroom machines (such as pinball or porcupine) where appropriate. Of course, if peripherals such as monitors and keyboards are required then these can be retrieved from the shelves, and placed back on the shelves after use to keep the workspace clean. If there are any inquiries regarding this cleanup of the project bench or of the ongoing cleanup of the clubroom in general, please contact me at frekk at ucc.asn.au . Best regards, Felix UCC Secretary 2018 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20180329/d74bc6e0/attachment.htm From nick at ucc.gu.uwa.edu.au Fri Mar 30 17:36:57 2018 From: nick at ucc.gu.uwa.edu.au (Nick Bannon) Date: Fri, 30 Mar 2018 17:36:57 +0800 Subject: [tech] [wheel] /services/http git permission issue In-Reply-To: <986ef3e9-d2ea-6e6f-9fbe-e9205120be9f@ucc.asn.au> References: <986ef3e9-d2ea-6e6f-9fbe-e9205120be9f@ucc.asn.au> Message-ID: <20180330093657.cyl2jpf3k2xjq5zq@ucc.gu.uwa.edu.au> On Thu, Mar 29, 2018 at 12:03:29AM +0800, Felix von Perger wrote: > There is a potentially problematic permissions issue relating to the git > repository in /services/http which may or may not result in certain things > (like committee minutes) being properly added to the git repository. This > can be seen when I run the `minutes-push` script (albeit a slightly modified > version but the git part is the same as the version in > /home/other/committee/bin/). > > On motsugo in the directory /services/http, I attempt to run `git commit -a` > to reproduce the issue: > > |error: insufficient permission for adding an object to repository database > .git/objects|| > ||error: infobase/committee/2017/2018-01-11.txt: failed to insert into > database|| > ||error: unable to index file infobase/committee/2017/2018-01-11.txt|| > ||fatal: updating files failed| > > The output of `id` is: > |uid=12168(frekk) gid=10021(gumby) groups=10021(gumby),101(netdev),10069(committee),10101(webmasters),13001(BUILTIN\users) > | > > Hopefully this provides enough information to fix the issue. > Best regards, > Felix > UCC Secretary 2018 Thanks for the thorough email! /services/http is meant to be very simple, but group permissions are easily mucked up if you don't newgrp / umask appropriately. At times there's been a cronjob to ensure something like the following: chmod -R o-w /services/http chgrp -R webmasters /services/http find /services/http -type d \! -perm -2070 -exec chmod g+srwx {} \; find /services/http -type f -name config -exec git config -f {} core.sharedRepository group \; (see core.sharedRepository in git-config(1) ) ...so none of the following should have output: find /services/http \! -group webmasters -ls find /services/http \! -type l -perm -o=w -ls find /services/http -type d \! -perm 2775 -ls find /services/http -type f -name config \! -exec grep -q 'sharedRepository = group' {} \; -ls Nick. -- Nick Bannon | "I made this letter longer than usual because nick-sig at rcpt.to | I lack the time to make it shorter." - Pascal From 21153308 at student.uwa.edu.au Fri Mar 30 19:40:57 2018 From: 21153308 at student.uwa.edu.au (21153308) Date: Fri, 30 Mar 2018 19:40:57 +0800 Subject: [tech] Fwd: Re: Building a little team of interest - Internet of things base station application In-Reply-To: Message-ID: <5abe224f.0751650a.4f637.4adf@mx.google.com> So the base station setup that I spoke about with Prof. Marc Tennant last year was just completed. Anyone interested in doing stuff with it, best to contact him directly. -------- Original message --------From: "Marc Tennant (IRCOHE.net)" Date: 30/3/18 5:27 pm (GMT+08:00) To: Chris Forbes <21153308 at student.uwa.edu.au> Subject: Re: Building a little team of interest - Internet of things base station application Dear Chris,Today?is a big day - not just as it is Easter.??Today?the two LoRaWAN base-stations are coming live at UWA (One at Crawley - live this morning, the other at Shenton?park?- and has some?tweeks?to go to come fully live).? Please, if any of the team are keen to investigate more we can connect you to the right people.? This is a real opportunity for free to use some great new technology solutions. With Kind WishesMarc On 23 August 2017 at 09:50, Chris Forbes <21153308 at student.uwa.edu.au> wrote: I can come at around 12. Thanks,Chris Forbes -------- Original message --------From: Marc Tennant Date: 23/8/17 8:24 am (GMT+08:00) To: Christopher Forbes <21153308 at student.uwa.edu.au> Subject: Re: Building a little team of interest - Internet of things base station application Mate,Would be great to chat.? Thanks for writing back. Today is good - I have space between 11:30 and 13:30 - tell me a time that suits you. BTW, my office is located in Anatomy - map at tensoft.net/EA/Office.php With Kind Wishesmarc On 23 August 2017 at 01:20, Christopher Forbes <21153308 at student.uwa.edu.au> wrote: Dear Marc, Thank you for your email, it sounds like an interesting idea! Would I be able to come have a chat tomorrow or Thursday about this?? Regards, Chris ForbesUCC President On 20 August 2017 at 08:44, Marc Tennant wrote: Dear Computer club,?I am a professor at UWA and want to share maybe something you guys might like to be part off. I have a little idea that I was hoping you might like to be part off?(support an application to UWA to support).? I have been an avid reader and fan of the Internet of Things principle (mainly around keeping elderly safe in their houses for longer!).? There is this system called LoRa, in short, is like wifi but very low volume of data flow (ie for Machines to send ?signals?to other machines) but the neat thing is that one "base-station" covers about 5km!!!? Its not hard to cover an entire city (Amsterdam did it with just 10 base stations!? https://thenextweb.com/insider/2015/08/19/the-things-network-wants-to-make-every-city-smart-starting-with-amsterdam/#.tnw_1m58zgpj ?).? Perth is just starting to have some base station - check out?https://www.thethingsnetwork.org/community/perth/ and I?was thinking we work collaboratively with this community group - they seem well organised.? I have chatted with them. The base stations cost less than $1500 so not bank-breaking.? They look like a small box attached to an external wall - see one at?https://www.multitech.com/brands/multiconnect-conduit-ip67 ?and then joined to the internet (blue cable).? Nothing more. My reasoning to write is that I was thinking we might get a little group of like minded people together and go to UWA community partnering (http://www.web.uwa.edu.au/engage/community-partnership-program#about) and ask if they would support the installation of one.? As the area around UWA has no cover (see map below).? And for me it was obvious the best young minds of innovation live, work and learn around UWA!!? Its an obvious community infrastructire addition to be cutting edge. Once you have the cover you can then build/deploy any sorts of little sensor thingo's (they are very cheap $30) and build your own sensors that can connect securely (all the protocols?/frequencies etc? are internationally agreed) that can send messages that you can then have app's websites etc monitor.? One great example I have seen is flooding monitoring!? It works inside and outside so you can even have things like fridge monitors!? It really allows you to connect anything you like to the internet.? Oh and the reverse is doable too - you can send messages to things (turn lights on and off). I do hope the idea might have some resonance to?you being part of the team to ask UWA.? Its a great opportunity for adding to the fabric of Perth, involving students and staff in a developing area of technology.? Oh and as always have a bit of fun. Happy to chat more (but please tech questions I will pass onto the guru's),WIth Kind WishesMarc Winthrop Professor?Marc Tennant? BDSc MSc(prelim) PhD (WAust) FCHSM FRACDS (GDP) Hon FICD FADI FOHE Director (and Founder), International Research Collaborative - Oral Health and Equity The University of Western Australia 35 Stirling Hwy Nedlands Western Australia 6009 Office location (using https://map.what3words.com): owls.battle.pipes E:marc.tennant at uwa.edu.au E: (private):marc at tensoft.net PGP Public Key:?http://tinyurl.com/ms885wd M: +61 (0)409 202 496 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.ucc.gu.uwa.edu.au/pipermail/tech/attachments/20180330/3e090f84/attachment-0001.htm