{"id":30491,"date":"2019-10-31T21:35:51","date_gmt":"2019-10-31T18:35:51","guid":{"rendered":"https:\/\/prohoster.info\/blog\/server-v-oblakah-2-0-zapuskaem-server-v-stratosferu\/"},"modified":"2019-10-31T21:35:51","modified_gmt":"2019-10-31T18:35:51","slug":"server-v-oblakah-2-0-zapuskaem-server-v-stratosferu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/administrirovanie\/server-v-oblakah-2-0-zapuskaem-server-v-stratosferu","title":{"rendered":"Server i skyerne 2.0. Vi sender en server i stratosf\u00e6ren","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Venner, vi har opfundet et nyt projekt. Mange af jer husker vores sjove geek-projekt fra sidste \u00e5r \u00abServer i skyerne<\/a><\/noindex>\u00bb: vi lavede en lille server baseret p\u00e5 Raspberry Pi og sendte den op med en luftballon. <\/p>\n

\"Server<\/a><\/noindex><\/p>\n

Nu har vi besluttet at tage det et skridt videre, alts\u00e5 h\u00f8jere \u2014 vi sigter mod stratosf\u00e6ren!
\n<\/a><\/noindex>
\nLad os kort minde om, hvad essensen var i det f\u00f8rste projekt \u00abServer i skyerne\u00bb. Serveren fl\u00f8j ikke bare med en luftballon, men sp\u00e6ndingen l\u00e5 i, at enheden var aktiv og sendte telemetri tilbage til jorden. <\/p>\n

\"Server
\n
\nDet betyder, at alle interesserede kunne f\u00f8lge bev\u00e6gelsen i realtid. F\u00f8r starten markerede 480 personer p\u00e5 kortet, hvor luftballonen kunne lande.<\/p>\n

\"Server
\n
\nSelvf\u00f8lgelig, i fuld overensstemmelse med Edward Murphys lov, mistede vi allerede under flight den prim\u00e6re kommunikationskanal via GSM-modem. Derfor m\u00e5tte bes\u00e6tningen, bogstaveligt talt, skifte til backup-forbindelse baseret p\u00e5 LoRa<\/a><\/noindex>. Derudover m\u00e5tte luftballonsk\u00e6bnerne l\u00f8se problemet med USB-kablet, der forbandt telemetrimodulen og Raspberry 3 \u2014 det s\u00e5 ud til, at det blev skr\u00e6mt af h\u00f8jden og n\u00e6gtede at fungere. Heldigvis var det de eneste problemer, og ballonen landede sikkert. Tre heldige personer, hvis m\u00e6rker var t\u00e6ttest p\u00e5 landingstedet, modtog l\u00e6kre pr\u00e6mier. For f\u00f8rstepladsen gav vi deltagelse i sejladsregattaen AFR 2018 (Hej Vitalik!). <\/p>\n

Projektet beviste, at ideen om \u00abluftbaserede servere\u00bb ikke er s\u00e5 vanvittig, som det kan synes. Og vi \u00f8nsker at tage det n\u00e6ste skridt mod et \u00abflyvende datacenter\u00bb: teste serverens funktion, der p\u00e5 en stratosf\u00e6re vil stige op til omkring 30 km \u2014 ind i stratosf\u00e6ren. Lanceringen vil finde sted p\u00e5 astronautikkens dag, hvilket betyder, at der er meget lidt tid tilbage, mindre end en m\u00e5ned. <\/p>\n

Navnet \u00abServer i skyerne 2.0\u00bb er ikke helt korrekt, da du p\u00e5 en s\u00e5dan h\u00f8jde ikke vil finde en enkelt sky. S\u00e5 vi kan kalde projektet \u00abOver-skyen server\u00bb (n\u00e6ste projekt skal hedde \u00abBaby, du er rummet!\u00bb).<\/p>\n

\"Server
\n
\nSom i det f\u00f8rste projekt vil serveren v\u00e6re aktiv. Men det sp\u00e6ndende her er, at vi \u00f8nsker at teste konceptet fra Googles ber\u00f8mte projekt Loon og unders\u00f8ge selve muligheden for at give internetadgang fra stratosf\u00e6ren.<\/p>\n

Serverdriften vil se s\u00e5ledes ud: P\u00e5 landingssiden kan du gennem en formular sende tekstbeskeder til serveren. De vil via HTTP-protokollen gennem to uafh\u00e6ngige satellitkommunikationssystemer blive sendt til en computer h\u00e6ngende under stratosf\u00e6ren, som derefter vil transmittere disse data tilbage til Jorden, men ikke den samme vej gennem satellitten, men via radiokanalen. Dermed vil vi vide, at serveren overhovedet modtager data, og at den kan distribuere internet fra stratosf\u00e6ren. P\u00e5 den samme landingsside vil flyvningsgrafen for stratosf\u00e6ren blive vist, og der vil blive markeret punkter for, hvorn\u00e5r hvert af dine beskeder er modtaget. S\u00e5 du vil kunne spore ruten og h\u00f8jden af den \"overskyede server\" i realtid.<\/p>\n

Og for helt skeptikere, der vil sige, at alt dette er manipuleret, vil vi installere en lille sk\u00e6rm ombord, hvor alle beskeder modtaget fra dig vil blive vist p\u00e5 en HTML-side. Sk\u00e6rmen vil blive optaget af et kamera, der ogs\u00e5 vil fange en del af horisonten. Vi \u00f8nsker at transmittere videosignalet via radiokanalen, men der er en detalje: Hvis vejret er godt, skal videoen n\u00e5 Jorden i st\u00f8rstedelen af stratosf\u00e6rens flyvning, op til 70-100 km. Ved overskyet vejr kan transmissionsafstanden falde til omkring 20 km. Men under alle omst\u00e6ndigheder vil videoen blive optaget, og vi vil offentligg\u00f8re den, efter vi har fundet det nedstyrtede stratosf\u00e6re. Forresten vil vi lede efter det ved hj\u00e6lp af signalet fra den ombordv\u00e6rende GPS-sender. Statistisk set vil serveren lande inden for 150 km fra launchstedet.<\/p>\n

Snart vil vi grundigt fort\u00e6lle, hvordan udstyret til stratosf\u00e6rens nyttelast vil v\u00e6re opbygget, og hvordan alt dette vil fungere sammen. Samtidig vil vi afsl\u00f8re flere interessante detaljer om projektet, der relaterer til rummet. <\/p>\n

For your interest in following the project, just like last year, we have created a competition where you need to guess the landing spot of the server. The winner, who guesses the spot most accurately, will get to go to Baikonur for the launch of the manned spacecraft \"Soyuz MS-13\" on July 6, and the second prize is a travel certificate from our friends at Tutu.ru. Twenty other participants will get to go on a group tour to Star City in May. More details at the competition website<\/a><\/noindex>.<\/p>\n

Stay tuned for updates on the blog \ud83d\ude42
\n
Kilde: habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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