{"id":9882,"date":"2014-01-27T09:00:25","date_gmt":"2014-01-27T09:00:25","guid":{"rendered":"https:\/\/serverlift.com\/?p=9882"},"modified":"2025-03-17T14:40:40","modified_gmt":"2025-03-17T14:40:40","slug":"lessons-learned-recent-dropbox-outage","status":"publish","type":"post","link":"https:\/\/serverlift.com\/fi\/blog\/lessons-learned-recent-dropbox-outage\/","title":{"rendered":"Viimeaikaisesta Dropbox-katkoksesta opittavia asioita"},"content":{"rendered":"

Hyvin harvoilla meist\u00e4 web-hosting-alalla on koskaan tarvetta skaalata Dropboxin kaltaisten palvelujen tasolle. T\u00e4m\u00e4n sanottuaan, kun Dropbox-kokoinen palvelu tekee virheen, joka johtaa seisokkeihin, kannattaa kiinnitt\u00e4\u00e4 huomiota syihin ja vaikutuksiin, jotta voidaan n\u00e4hd\u00e4, onko mahdollista opittavaa.<\/p>\n

10. tammikuuta Dropbox siirtyi offline-tilaan. K\u00e4ytt\u00e4j\u00e4t eiv\u00e4t pystyneet synkronoimaan kansioitaan, joten he eiv\u00e4t p\u00e4\u00e4sseet tiedostoihinsa monilla laitteilla. Palvelu oli poissa p\u00e4\u00e4osin perjantai-iltana, ja k\u00e4ytt\u00e4jill\u00e4 oli vaikeuksia k\u00e4ytt\u00e4\u00e4 tiedostojaan koko viikonlopun ajan.<\/p>\n

Of course, the media was full of speculation about potential causes for the outage, with many focusing on a possible DDoS attack. On the following Monday, Dropbox released a statement that went into detail about the causes of the outage, which dismissed the idea of an hakkereiden hy\u00f6kk\u00e4ys<\/a> ja syytti sen sijaan viallista p\u00e4ivitysprosessia.<\/p>\n

Katkosp\u00e4iv\u00e4n\u00e4 Dropbox suoritti ajoitettua k\u00e4ytt\u00f6j\u00e4rjestelm\u00e4n varmuuskopiota. Kuten voitte kuvitella, Dropboxin k\u00e4ytt\u00e4mien tuhansien palvelinten p\u00e4ivitt\u00e4minen ei ole mill\u00e4\u00e4n tavalla helppoa. Suuri osa prosessista on automatisoitu skripteill\u00e4, mik\u00e4 on saattanut aiheuttaa seisokkeja.<\/p>\n

T\u00e4rkein oppitunti, jonka Dropboxin infrastruktuurip\u00e4\u00e4llikk\u00f6 Akhil Gupta on kuvannut, on, ett\u00e4 jos aiot tehd\u00e4 p\u00e4ivityksen, sinun on oltava t\u00e4ysin varma, miss\u00e4 tilassa palvelin on. Jotta sama virhe ei toistu, Dropbox toteutti ylim\u00e4\u00e4r\u00e4isen tason tarkistuksia, jotta palvelin tarkistaa oman tilansa ennen komentojen suorittamista sen sijaan, ett\u00e4 suorittaisi sokeasti saapuvia ohjeita riippumatta siit\u00e4, mit\u00e4 se tekee, kun se vastaanotetaan.<\/p>\n

Sit\u00e4 ei mainita tapahtuman kuolemantapauksessa, mutta seisokki olisi todenn\u00e4k\u00f6isesti voitu v\u00e4ltt\u00e4\u00e4 tarkemmalla testauksella. Dropbox-katkos on muistutus siit\u00e4, mit\u00e4 voi tapahtua, kun yritys laajentaa nopeasti infrastruktuuriaan. Skaalautumisesta tulee ensisijainen tavoite, ja testaus j\u00e4\u00e4 tietyss\u00e4 m\u00e4\u00e4rin sivuun.<\/p>\n

Tarkempi l\u00e4hestymistapa automaatio-komentosarjojen testaamiseen ja tarkistamiseen on saattanut saada kiinni "hienovaraisesta virheest\u00e4" ennen sen tuhoa.<\/p>\n

Tietoja Graeme Caldwellista - Graeme toimii saapuvana markkinoijana InterWorx<\/a>, vallankumouksellinen web-hosting-ohjauspaneeli is\u00e4nnille, jotka tarvitsevat skaalautuvuutta ja luotettavuutta. Seuraa InterWorxia Twitteriss\u00e4 osoitteessa @interworx<\/a>, Kuten he Facebook<\/a> ja tutustu heid\u00e4n blogiinsa, http:\/\/www.interworx.com\/community<\/a>.<\/p>\n

 <\/p>\n

\n
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<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

Very few of us in the web hosting industry will ever have the need to scale to the level that services like Dropbox do. With that said, when a service the size of Dropbox makes a misstep that leads to an outage, it is worth paying attention to the causes and impact to see if 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