 or event of the Hacker community, the infrastructure review, all the numbers, all the facts on how much love, labour, passion, tears, pain, energy and so on went into making this event even greater than the last one and even more awesome than anything I've seen before to be honest. So please give a very, very, very loud applause to the MSH 2022 infrastructure team. Many, many thanks for the warm-up louds, the three we helped us to forget the last ten days for build up and keeping the power running for all you have fun and have power. So I give you a review about, first was Planet, we make our power monitoring like CCC camp and oh, we have some nice D-MAS stuff, we test it and then come a lot of things that are not planet. Some stuff not arrived, some stuff was missing, some stuff was wrong and yes, we had a plenty of things to do. So first always, yeah, plants are always right, this is one of our plants, maybe it was working, then cables to short, things not here. So we have switched over lines and we measure lines, okay, we got some wrong resistance on it, we have to change to bigger cable. This just happened if you are in a field and this is different from last time. So we had a different set up this time, last time we have more generators mid in the field and we have planet first to use transformers from Leander, the local power company and they say, oh, we have built up a cloud computer center, we have no people to get you your transformer and we switch to use generators and we use the scouting infrastructure. This is built for scouts, so normally hook up some, I think some cookers, maybe a warm water heater, something like this and then we put on this network our power and put more cables on it, so we have about 150 cable length after the cabinet from the scouting. So we never do this again, so that's not the right idea. So we had some issue with current loop resistance on short circuit, so we had to do a lot of things about this. So then find some nice thing, like every time this is rental equipment or you see on the right side, this was a boat with a speed limiter with a CE block. Let's just make a picture of it, it's very nice. This is a second controller inside and inside you have more speed. Even this is rental stuff, all stuff is tested from the rental company, it's all tested, you can use it, it's fine, no, it's not. This was also nice, we collected, there was some pizza oven with some problems with the heating element, so get some error current to ground and put this nice thing in. First thing is the 300 milliamp RCD is not allowed, 32 amps are smaller connectors, have to be a 30 milliamp RCD, so I just put in a 300 milliamp and it's very nice in German called this klassische Nullung, the main incoming earth ground is about the right device you see, this is some protection diode about 50 volt, okay, as the voltage goes on the case from the enclosure goes over 50 volts, then this short circuit to ground is one time and now it's an open circuit. People, if you bring stuff that's working not properly, just give us a call, come to us, we will help, we always help the McLean burgers to fix their stuff and every event is normal, if you have a problem we can try to fix it for you, maybe we can try to get your parts for you, we will help you, if you have any problem with electrical equipment come to us, you're not the bad guys, we will help you get stuff running and get it safe for all, so don't do it, please, even some, we collect some 32 to 16 amps adapters and some other riot stuff, we just catch them and give them back, then also things, yes, we have very nice generators with, oh, a little bit smoke, so state what you get, some rental equipment, so this have to running a little time, or we have plans in the middle they see a nice cabinet from scouting, it says there are some 63 and 32 connectors inside and we open it and say, oh, nothing inside, maybe you should go connector, or nice connector, so insulation is cut on the cables or you use a knife, please, if you have need assistance, come to us, we help you, if you have any problem, we fix it for you, so we go out of stuff, we get a second rental company, maybe we get some stuff more, this is very helpful, we are running out on stuff on Monday and build up, so all was gone, and we get some nice cabinet, as you see on the right, with Belgian connectors, and so, oh, not all have this multi-plug with a hole inside, and we get this nice adapters, too, from a Draco, it's weird, but it's working, you have to switch over to CE, normally this shoku is not allowed, but you don't have the polarity with neutral and lifeline, but this one on a Belgian connector, you have this, you cannot plug in the wrong direction, and then go back to shoku, and it's working, the middle device that we found, and there's some measurement device on a 32 amp, with no extra fuse, then open lines, and then to shoku, people, don't do it, this is, don't do this fucking shit, buy a fuse box, put three fuse in it, and no guys, not this way, isolate tape, I don't know, isolated DC voltage on the outside, please don't do this shit, our people will go home, and very healthy state, and die people, nobody want to have this, and even as a child, we never can accuse it for ourselves. So, we are measurement every, every, every LCD on the field, we make it on CCC camp, and we make it on Congress, and we do it now here, and this was some discussion about this, have you do it, always be doing it, this was a lesson what you learned, you find always broken stuff, LCDs on the field, the test it is, is common on the, on the truck, is treasure, treasure around the field before they play, something get wrong, we test everything, we found broken devices, we replace them, and that's how all ours have the safe. Some hackers bring weird stuff, yes, we are a hacker camp, that is fine, so what the LCD have to be working for all we have in the safe state, that is really, really important to check this, we do it, this time we make it always, as help out people, and this is a nice thing to do. We found some weird things, this is about what you see on the, on the left corner, this is a short current what we have, the 65 amps on the sugar line, and the, the ticket breaker need a lot, a little amount of current to trip fast, if the loop intense goes too high, then the, the breaker will only trip on the terminal, and just take some time to trip, so maybe have a fire on it, this here have some mass loop intense on long lines, this we have to run sticker cables, and we can fix this one, this was, and the lowest end, what you can do, even on the rides RTC, we must, earth current, earth resistance on the generator or on the dyke, this is okay, but measurements of stuff will help us all, so then we come here and starting make power, oh, I will set on the generator, but the generator is not hooked up, okay, I go here and hook up the generator with the small cables on the ride, and we get some two errors, first one say warning over speed, okay, so the generator runs on 52.8 hertz, this is a lot, this is no problem for the most devices, except USB from the POC team is not, oh, this is not right, oh, let me switch to battery and then start, then this was this little switch, what you see is a resistance load, and the generator tries to regulate this against the resistance load, but you have to hook up external load, this switch was on, nobody knows this, but that was not the biggest issue what you have, the biggest issue was you have, was the generator here on the field, and E0 was not bonded between neutral and ground, we start the measurement on the boxes what we delivered out, and say, hey, we have a lot of resistance, we cannot, things, we had about 10 kilo ohms resistance, and the incoming network from Leander, from the power companies, the TT network, it has no bonding, it has a bonding in the transformer, but not a local bonding at the power houses here, then we talk to Agreco and they say, yes, you have to open the generator, we make some temporary fix with a coffee cup and a little bit water, and then you see we have to bond, this is the right picture, you see the wire with the green mark, this has to hook to the neutral position, that was the only generator that had it, we measure every generator, lesson learned, measure every stuff, don't trust anything, you don't know, somebody can rent this before some guys do something on the generator, everything, try to measure it, so we have fixed the problem, then we have a proper grounding and all the RCDs trip correctly, that's what we need, then we're starting to try get some monitoring, this was planned, same, we bring our power boxes, yes, some guy had this in near Frankfurt, oh, we have a truck, you can leave this, and then wow, the truck on 120% load, and we don't have them, so, and we had so much shit to build up to get the monitoring running like we do with some of the other events, so then we find this Aggreco, have a nice controller on it, most commercial big generators have a deep-sea controller on it, just rebranded with Aggreco, oh, this has a mode post and as a net port, so 8,000 years controller, and it's very nice, if you register at deep-sea, just make an account here, you can download the software, and you get a 200 page mode post documentation with every command that you need, oh, we try some first generator, oh, we have to set up, and then something happens, yes, the bus is short on an A0, like here, as far as talk running, other people are very happy about this, so, oh, power off, I love it, yes, this was a different style controller, we don't look exactly on it, and I think as far as the canvas, the generators talk aggressive with the canvas cables, just an XLR cable, so, and then we plug an other net port in, and the generator says, oh, no, just don't like it, switched off, to get all this load, and say, ooh, on the speed, and then just the motor gets turned off, the cousin had the load, and then was a complete power output, broken, the generator sends a postcard, it's very happy about this, they say, oh, that was rude, wrong port, it really turned me off, and it goes off, yes, you look at the backside, you see this nice computer logo on it, it says port A10, and the generator says, okay, just plug it, plug a network in, and that was our fault, then we get our connections, we pick our phone, knock was very helpful, the end result confirmation, we approach, okay, we have a contract with our phone, some cable issue in the E0 building, then our pizza box thing, patch graffana, and yes, we get some data, this is from E0, but only one generator, the second one is only modbus, so you need an interface, and you see exactly where the McLean burger starts cooking, and you see nice in the middle of the day, as they see the cooking phase, and then gets a little bit down, and then see when the dish was running, and this is only the half load, another one is the generator, you see current, see voltage, and another generator was on the sous afield, the small one on the camper, this do not lot of work there, mostly the lightning there, but you get current, you get voltage, you get your frequency, you get your temperature, and these controllers are really great, but you have to figure out which set up the generators have, they support a lot of different motors, and yes, we get this running, the next event we will do is we check out in the first how to communicate with the generators, you can complete a remote controller, you can see everything, you can do everything, and yes, we'll have full to get events running and see problems in the first, we had some problems under L01, some generator goes off, then try to sync, and the syncing does not work, so there was some power outage about this, yes, maybe a cracker have a little bit more quay of it, so if you have this remote access, you can see every configuration, you can change the configuration and see problems, it's very nice, so conclusion for our power this time, never, ever trust rented equipment, never, if the rental companies has tested, test it again, it's grounded, probably measure it, that schedule is for early delivery, so you have some time to react about this, if stuff not coming right, so, and rent least at most 30% of equipment, so the plants never work, oh, I need somewhere, oh, we need somewhere, oh, we need some power more, this will help our people, and use more as one rental company, so if you rent a company, rent some stuff, it's helpful you need more, if you only have some, yeah, can you a little, you can do it, and plan more time, for built up, troubleshooting, test time, you build up schedule, seven days is really hard for this big power, so maybe start three days earlier and it's help everything, Jen said, yes, we get a lot of data, next event, otherwise thought we have a good monitor on it, surely the fixed problem turn setups, complete remote control, this will be fine, some things about tear down, do not remove, please, don't do it, any of our connections, we will do it, there's some connection, you can't tear a problem on load, we will do it, not do it, please connect your stuff as early as possible, make take only your stuff, only, and don't connect others, we have to pay for every cable, it's not here, so when you laid, we have to tear down, we just disconnect your cables, and we let them sell, and please help us to get this event tear down, go to the heaven, be an angel, many, many thanks for all people to get to help us on this time here, to get this event running, it was very nice here, we had a lot of days, we say, oh, shit, I'll drive home in the end, it's very nice event, many, many thanks to all people to make this happen, thank you, thank you, thank you, if you're interested on the talk from the power monitor, last time the link is on the sheets, they will send you to the box, many thanks, next, I think now knock is coming, okay, have a nice, warm welcome for the knocked people, you get to us all the nice internet, what do you have, and I pass over to nicoduck, yes, I think we'll just pass on the microphone, give me a second to connect the laptop, oh, only one at the moment, yeah, what would be easier, yeah, hi, I'm Nico, this is Ayon, we are from the knock, we are doing the knock part of the infrastructure review, and there's also a second microphone, thanks, that makes it easier, test it, oh, testing, yeah, so we'll jump right in to the network we've built for you here, this is the global network topology of what we've built, this time we actually have two external locations where we have our edge routers for all the external connectivity, that is in the smart DC in Rotterdam and the Nikf in Amsterdam, so there we pick up all of our transit providers, internet exchanges, and from there on we are using 100 gigabit DWM waves to get here on to the site, the next slide will explain a little bit more about how we're actually getting that to the site, and then here in Zeewolde we have two data center, quote unquote data center locations, we call them E0 and L0, those are the concrete buildings you see, for example, yeah, like next to the knock, yeah, next to the knock tent, and then the that's the E0 and L0 is the building, that's sort of integrated into the Scouting's Aventura house, so there we have then those two routers also interconnected with 100 gigabit and from there on out we are downlinking towards the various data enclose we have on the site and the switches, and we have this time the opportunity to actually multi-home all the data enclose, so each data enclo has a two times 10 gig uplink and it's also redundant, so if one router would fail or if there's a fiber cut, the data enclo still has connectivity, so for the for the long haul uplink to actually get the link from here on site all the way to Amsterdam, we have a sort of complicated setup this time, because the the dark fiber prices were very high to go direct from here in Zeewolder to Amsterdam, so we have a yeah we have a two-part connection where we have a rented the dark fiber from Zeewolder to Almere, and from Almere we have a sponsored DWM connection from from surfnet which is the Dutch research network, and on this network we're using a technology which is called an alien wave, so we are essentially able to transmit a signal on a specific frequency which they then can which surfnet can plug into their network and they will transport it from Almere back to Amsterdam, and a nice thing about that is that the surfnet DWM network is quite large and they also have a backup path, so if they would have a fiber cut say from the direct path from Almere to Amsterdam, they have a backup path via Hilfersen, so that's quite nice. The yeah the dark fiber from here to Almere that is just yeah that's a single connection, so if somebody would put some yeah backhoe in the ground and the fiber would be gone, so luckily everything went well so far, and so yeah and with this we are yeah we're transmitting a 200 gigabit coherent DWM signal over this, and we're then using the 200 gigabit connection to break it out to 100 gigabit. Yeah lastly we also have a connection back to, we also have a connection back to Rotterdam that is also on 100 gig but those are a sponsored connection. Yeah so for all for the for the internet part of the uplink we are running our own AS again which is registered under event infra, we have a requested the temp assignment from RIPE, so we have a slash 17 of IPv4 space, and also we've loaned a slash 19 IPv4 prefix from the CCC. Well in terms of external connectivity we have quite a bunch of transit and peering connections so we have a few we have a few of them in Rotterdam and then we have a whole bunch of them in Amsterdam, and yeah so we have a few of those connections running on 100 gig and the others are running on 10 gigabits. This is just I would say a list of all the hardware that we deployed on site, we had the two main core routers in the two concrete building E0 and L0 which are donated or loaned by Juniper, we also had some more Juniper devices from the Juniper loan and besides that we had a whole bunch of Arista switches and Aruba Wi-Fi access points deployed all over the site in the data close, in the track tents, at the bar, at some villages to get a decent network coverage. All the optical stuff like all the optics are again loaned by flex optics which is always quite nice from them. We also had quite a lot of servers running on site to keep most of the data or all of the data needed to run it on site and not leak something out of the site. This is just some random pictures we took during the deployment. We had, you might have seen the knock tent which was quite huge which was also good to store all the stuff during deployment to do the assembling of the sticks you see for the data close. We had saw them funny mounted Wi-Fi access point which was upside down, this should not have been a bird feeder so we put it up the the right way again to stop water getting in. We did a brand new setup this time. The last time we used 10 gigabyte optics to connect all the data close and this time we thought oh we could do some CWDM magic so we had always four data close in a ring. We used 40 GLR four optics in the core router which have four different wavelengths so four different colors of light containing 10 gig each and we broke out one of these colors in each data close so I would say one data close was green the other was blue and then we got red and yellow of course not these colors but just to make it a bit easier and we connected them to both core routers so one data close had the east connection on one wavelength and the west connection on the other wavelengths so there was a lot less fiber to deploy for this setup which sped it up by quite a while since we had so many fiber already in the ground the scouting side has some connection between the concrete buildings E0 and L0 to the distribution cabinets you saw in the earlier talk where the power comes out they also have fiber connectivity in there and we heavily used them to have backbone connectivity on site. We had our own I would say branded CWDM maxes from tallgrass we had a sweatshop over there to assemble them ourselves to keep the cost a bit to a minimum and they even have the laser engraved fiber squirrel which is with us since camp 15. Of course there was some data close contamination again it happens nearly to all the events mostly during build up I have the feeling that it's mostly happening to data close near some tents which are being set up so I'm not totally sure if this is the right audience or if we should talk to the tent builders but in case you come around someone picking a data close during set build up of the next event please talk to them and make them stop contaminating them it's always fun to come in and replace them on the last notice but it would be a bit more relaxing if we didn't have to. Someone also thought that it would be funny to put temperproof seals on the decays it was kind of annoying but I'm also thinking about if this would help stop contamination during build up if we put the seals up on ourselves but since someone's taking the effort to pick a lock I'm not thinking that a temperproof seal would make any difference here maybe we'll give it a try maybe not we'll see we operated the three onsite data centers the biggest one was the E0 building right next to the knock tent behind the two generators we hosted equipment in there for basically all of the teams which wanted to have onsite equipment hosted this was the phone operation center the video team the radio team with the onsite Motorola coverage was there the fifth admin for stuff and of course our own systems like the DHCP server dns automation was running onsite as these concrete buildings have quite thin walls they became really hot during build up when we had over 40 degree or around 40 degrees outside the wall heated up to over 40 degrees and the ceiling too so we had to put three air conditioning units in there to keep it to a usable level which mostly shot the whole the hot air from the sun out the systems didn't do so much we also improved our net box setup again we've been using net box for our network automation since camp 19 we are expanding it constantly we have great folks in the knock team developing C3 CFG to generate all the routing and switching conflict from net box and this time we also used net box to have all the patched fiber in there last time we used some spreadsheet for documentation now it was in net box too we did the planning we even used our tools to calculate the fibers we needed so we have this inventory of long fibers and we knew which fibers we would need onsite and our tools helped calculating and picking the right fibers for the right job and then we fed this data back to net box we also used it again for device tracking ipam and all this stuff we probably had in our previous infrastructure reviews so finally some statistics from the network we've run here we have been able to push the uplink on the sort of receive side so what we receive onsite that went up to 50 gigabit that's somewhere yesterday evening and transmit was at the maximum of 14 gigabit we had around a peak of 2800 wi-fi clients on the network over the course of the five days we seen around 8500 unique clients and for some reason we've only seen about 1000 batches on the network so not quite sure if that is the right number but yeah and this time we had the 10 gigabit copper connections available too in every datanclow so what we've been able to collect in terms of data is that we've seen around 25 connections actually running on 10 gigabit copper so that's quite nice lastly there was also one onsite internet exchange which was run especially for the event which is the mch IXp yeah lastly so the running a network like this cannot be done without any sponsors so we have a quite long list of sponsors that are either sponsoring or loaning hardware or giving connectivity so that yeah I will go through the list but it's junipers which we use for the edge and core routers flex optics for all the transceivers tallgrass who helped with the all the muxes you have also seen i3d.net helped with co-location the dwm equipment and ip transit barbiel for the servers bit for all the utp cables all the blue utp cables you have seen onsite event infra helped with the access network so it's all the aristas and all the aruba access points our surfnet supplied to the alien wave between almera and amsterdam core backbone is ip transit provider entity as well analytics sponsored an internet exchange sport a2b and fusics and vopcom all sponsored ip transit connections and lastly i oh a cross connect in nick have for the mch internet exchange is sponsored by editab we also had some fun during the event you all know most of the knockwork is happening before and after the main event so we thought it would be fun to have some spliced fiber necklaces there it was a bit hard as i heard but it worked so yeah that's basically what we have thanks for attending the main network will stay up until tomorrow today we will only tear down the track tents but basic wifi coverage will stay until tomorrow something in the morning or midday thanks all hello so a quick couple of facts about the phones from the phone operation center this time brought to you by the entropia carl's who are westwood labs cars for midlong and some friends uh yeah what did we bring to this event we uh almost we have almost the same setup as on shard 2017 so we brought about 26 deck radio base stations have five fiber interconnected pbx's on the field which connect to all these deck antennas controlled by two redundant pbx controller vms with redundant ip connections and also we do have 20 something field phones distributed across the field which are manually operated some statistic so we do have many calls handled we have about 500 inbound as well as outbound calls to the public telephone network uh connectivity to that was sponsored from our friends at speak up which also sponsored dalin at dial out at char so we have a total of about 45 hours of telephony to the public network mostly to germany the netherlands australia italia and belgium yeah our deck network some statistics uh no numbers just pictures um you can see uh an overview of uh our char map with all the deployed base stations most of the traffic of course happened around the center of the area where the phone operation center and all the other ocs resides but also distributed across the field uh uh um coming to the availability we had no time for downtime this year almost we have like lost one antenna for about 10 minutes but the rest is just a nice green graph thank you very much also many thanks from our side go to all the angels who operated nearly 24 hours a day the switchport pbx to uh have all the field phones connected and provide the ability for everyone to listen to the beloved waiting song bonin in the orn yeah uh some tech facts so um one slight change towards char 2017 is that we have now a working auto registration feature for our decked phones so you don't need to come again anymore with your phones to the pock tent but just register them uh yourselves uh about 420 people have done that so uh thank you for saving our angels many many hours of manually registering decked phones because that was a lot of work at the last event um some uh uh novelty we also had this time was a bit of optical transformation because we're using the uh onsite fiber network which is mostly single mode fiber and uh we built some custom adapters to adapt multi-mode fibers which we have on our old telephony system to the single mode uh on the onsite so many things uh go to our friend fabian who helped designing and building these things also if you want to check it out you can go to uh github and to visit the project there if you want to build some sfp to sfp fiber adapters yourself regarding tear down the phone network will probably be gone by the end of today or the beginning of tomorrow so if you have any land decked headsets and chargers from us please return them to the pock tent as soon as you don't need them anymore preferably tomorrow noon at the latest so that we can pack everything up and uh and get off site as soon as everything is done thank you very much so um yeah we're a production house team mainly part of a couple of dutch people plus uh wok and uh these are our experiences of the last uh two and a half years uh we prepared the event by starting with a dutch c3 wok node in um in amsterdam together with uh event infra and the nok team um and then uh the logistics started to get all the hardware here because after the last three years we had a lot of hardware this uh all over germany and um we planned to do some conflict management changes because maintenance was needed so build up during build up we had a lot of fun because our logistic provider was once again quite unreliable um pick updates they apparently don't know what they are we haven't figured it out either because they gave us estimates and then picked it up a week later uh we also don't know what drop-off dates are yet because our logistics provider hasn't been able to teach us that um and in some cases the shipment has been routed quite scenically uh we had like a shipment going uh from near berlin uh to leipzig uh to bartholmberg and then to some when the Netherlands was quite fun um yeah on the topic of conflict management we are starting we have started the process of replacing our old and outdated uh ansible conflict management with bundle wrap uh our team data center has rewritten conflicts for all of the on-site devices of c3 wok so the encoders the mixer laptops um the tally pies and the and our data center uh which required reinstalling all of the operating systems during the event and we've done all that uh within the last two weeks um yeah commit like there's no tomorrow we've made a lot of changes and this is just like a part of that commit log um we had around 100 commits or so at the uh like at the end of the event quite a lot of work so um during the event we learned a few things apparently these stands are not uh word pro waterproof which means uh the tarps and that little tent over there um we also learned that uh long hdmi is uh quite unreliable especially with uh 4k uh signals and um apparent uh because the tv's are now almost all of them are 4k and uh we're not um one power outage we think killed an amplifier that uh uh amplifier controller that eight hours later we started to uh make a talk really unpleasant and uh to fix that up we removed one um talk to a different tent but that tent was closed we couldn't use it anymore after the one o'clock and that dark would uh run over that so we decided we uh invented the silent stage which will show a picture of and we had an unfortunate incident with a mute button during a talk on the first talk on a on a more yesterday morning which we uh managed to uh re-record today oh sorry wrong button so we built a nice little tent to protect the equipment so that's a a tent squared or something this is the silent stage you see a lot of people watching a bytecode jam with all connected with headphones the tent itself is completely silent until you put the headphones up and you had really nice music and commentary on the competition going on and we also had this thing apparently um we are now covering all the insides of our equipment with uh mch dust which was already containing camp 19 dust and also maybe sha 2017 dust so it's time to open the cases again and clear them out yes see free dust really did a lot of work who also did a lot of work for all of our angels we need five angels per talk plus an additional av technician to be in the lecture all at all times that gives us around six 60 shifts for the whole event we had to do free angel introductions because of people apparently arriving too late for the first two introductions and on a personal note we would really appreciate it if people signed up for their shifts in advance and not just like five minutes before the talk or showing up during the talk it's quite stressful for us to have the angel system showing us a lot of angels missing for shifts and having to deal with that and and and and uh showing up on a stage and there's like 10 people because they all want to do a shift but they all forgot to sign up for it please do better next time it saves us a lot of headache during the night so yeah we also extended our walk network normally the walk network just contains our own infrastructure like the video mixer and the mixer laptops and all that this time we extended it a bit we also added the audio mixers into the walk network and configured them ourselves the in-room video mixing which is what is used to switch between the info beamer and the slides on the monitors and the big screen behind me was also configured by us and put into the walk network and we have made sure to save the configuration everything and that will be possible to reuse at future events it just allows a few comfort comfort features like the ab technician no one has to run through front to switch the info beamer but can just do it comfortably from the back on their laptop some some statistics we had 132 staged videos um we have released almost all of them at this point uh that's about 100 hours and 20 minutes of video um in total we had 118 angels four vinky cuts and two unicorns and countless cuttles because apparently we are not only the video operations center but also the flush operation center uh some some colorful graphs we've got statistics about when uh the the stream was watched the most and when it wasn't uh very obviously nobody watched the stream during the night it's interesting the baseline of people that left their tv's turned on apparently um can say I have a problem with that we had quite a nice pause music during the event um yeah and to end we would like to thank some people we would like to thank uh spiker sound who built the uh everything you see uh we especially like to thank a holo plot who supplied these magnificent uh loud speaker systems which can do much more than we were able to show you here we especially would like to thank the angels that helped us because uh we can't do this ourselves there's just 10 of us 10 of us roughly roughly and uh there's uh hundreds of angels that helped us and um personally as product size I would really like to thank all the the people of C3 Vok who always make this a really fun experience to do these events and uh we hope to see you soon on the next event and lastly thanks to all of you if you weren't here to watch the talks there wouldn't be no reason for us to produce them so thank you hello I'm representing the herald team and um you're nearly done so the herald team is a new team most of the people were not heralds before or at least not at hacker events we had uh people from 15 to 77 heralding in nabacos and everywhere so uh I think this is quite awesome um we covered three stages and one herald desk um with all these uh 23 people we had a talk coverage of all the talks that required a herald which is all beside of something like um lightning talks uh this were 132 as some talks were repeated we did some twice and we also looked slightly into the workshop tents and well we also covered some of those that didn't need a herald we had zero empty or late or missed shifts which is awesome for this event we had an average team member uh a talks per team member was 5.73 whatever so um some did quite much some did not so much but had other things to manage like children and stuff like this so very thank you to all the heralds um we had 181 herald shifts with these 23 heralds and a lot of back office things are additionally happening so I'm used to speaking with talk cards as a herald not as a presenter so we had some other numbers um we also had to monitor the co2 levels in the tents which stayed fine beside of the time when we had these gems session going on here and we were actively blowing co2 into the tent and well the number went crazy but I think we could manage this but we had to open up the tents for heat because uh it was quite hot in between um I hope you yeah wouldn't be yeah I have I hope it was okay so um we used 450 talk cards or we went through 450 of these nice talk cards um we ate two birthday cakes because one of our heralds had birthday and was then doing herald shifts um which is great I think and we used a lot of water sunscreen and hats well also matter um we had 21 different announcements even if you probably only remember two or three and sleep about them so actually we had two complaints reaching us the others probably were held up by the silent thingy uh complaint booth or something uh that so the complaints were that we were repeating too much the same announcements uh yes we earned four sets of parking and trash angel patches if you want some you still probably can get them by doing these shifts you probably saw them all but we got four sets because we were showing them to you well we lost two sets if you find some please send them over to hardworking angels we had one speaker being hit by an angel by a herald um there was a mosquito or something I was told yes um and we had one field telephone call so somebody actually was using them great um yes then I have to tell you drink more water and now I can happily announce uh the content team I guess there's some weird signs uh the content team uh we usually don't get the content team and we don't learn about all the back work uh about the speakers and all of this so here's the content team you have to give me a minute while I unlock my laptop hey I'm from the speaker desk slash content team we work quite closely with uh Katazi from uh herald's coordination uh we don't have grafana so I'm afraid there'll be no pretty pretty graphs but uh we do have some statistics and fun things to share so over the last what uh four days you have hopefully enjoyed uh 233 sessions from 179 speakers uh I'd just like to give a round of applause to everyone who did submit to our CFP there were loads of awesome submissions unfortunately we couldn't accept everything uh but thank you to everyone who did submit and particularly those that did present if we could just give them a round of applause so that was made up of 144 talks over these three stages 61 workshops across more than three workshop tents I think four or five uh 27 music performances over on the music stage four percent by our very own DJ in team content one film with subtitles uh a fire dragon which was over there if you didn't see it and loads and loads of village content uh some of which was in our official program some of which wasn't there was loads of awesome stuff happening on the train and I hope you managed to see some of it so some other statistics uh we had 1.5 mobile apps a iphone app and an android app that we never finished I never finished uh we did 25 schedule releases through pretalks which is the conference management system over the just during the the four days that we have been here uh we had unfortunately five covid cancellations speakers that couldn't make it uh they got covid uh we we feel bad for them we hope they're okay uh we did have a fridge this year which was awesome we also had a drag queen which I understand was very popular and we lost track of how many passport stamps we gave out to people we also had a load of speaker stickers they were gold and shiny uh like that and they disappeared from our tent halfway through so if you do know where they are we would love to have them back um because we do have other speakers to give them to so our horeca order uh this is important because we give the speakers free drinks when they come to us um and we have managed to order I don't know if this is the most that a team has ordered I suspect probably not um but we have ordered that amount of stuff quite a lot of marty uh which we have given out to our speakers uh if you want drinks please submit to the CFP next year um and some less sensible statistics uh we had two of our auger late to their talks which created one myth herald we had three talk reruns because of unfortunate av issues we had one water related uh power failure in our tent uh where it tripped the uh the breaker and then when it got really really hot um actually uh heated up our thermal thermal cut out and tripped it again um we had one pre talks server migration thank you to to walter for doing that halfway through yesterday I think um as you can see on the back of our gator we have a how am I driving sticker we had two suggestions on how we could improve our driving I don't know what that says about us um we had one 40 bulls wagon uh which destroyed a fiber two fibers I think from knock we're really sorry um and one broken like label printer thing they cost 50 euros and it got really hot and and melted in the machine um and unfortunately we have one talk that's overrunning which is this one it's the only one um so I'm going to uh quickly end this um just some thank yous so productive house and the uh vok um they are awesome they do a great job of streaming everything and going and fixing htmi cables and workshops when they don't work the herald desk and I I'm going I'm going the herald desk and in particular who has just organized everything with heralding we haven't done anything we printed cards and that was it um the ever patient sys admin uh Walter who deals with pre talks when it crashes every five minutes um and our lightning talk coordinators who have uh coordinated all those who didn't submit to the cfp but still wanted to have a chance to speak on stage I understand there's some really good talks for that they are recorded you can watch them online um and finally uh we have an angel that has literally sat in our tent for the entire weekend uh so thank you to them in particular and all of the other teams all the angels that signed up for shifts and in particular pl for supporting us in this event so thank you so as this was the only no first first things first thanks a lot to the all the auger teams and all the angels and everyone who helped making this event as awesome and as it was right please a very warm applause for everyone