{"id":38840,"date":"2019-10-31T22:26:17","date_gmt":"2019-10-31T19:26:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/svoj-dynamic-dns-s-pomoshhyu-cloudflare\/"},"modified":"2019-10-31T22:26:17","modified_gmt":"2019-10-31T19:26:17","slug":"svoj-dynamic-dns-s-pomoshhyu-cloudflare","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/administrirovanie\/svoj-dynamic-dns-s-pomoshhyu-cloudflare","title":{"rendered":"Svoj dynamick\u00fd DNS pomocou CloudFlare","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00davod<\/h3>\n

\n\"Svoj Pre osobn\u00e9 potreby doma som spustil VSphere, na ktorom spravujem virtu\u00e1lny router a server Ubuntu ako medi\u00e1lny server a e\u0161te mno\u017estvo \u010fal\u0161\u00edch vec\u00ed, a tento server by mal by\u0165 pr\u00edstupn\u00fd z internetu. Ale probl\u00e9m je, \u017ee m\u00f4j poskytovate\u013e pon\u00faka statick\u00fa IP za peniaze, ktor\u00e9 by sa dali vyu\u017ei\u0165 na u\u017eito\u010dnej\u0161ie \u00fa\u010dely. Preto som pou\u017e\u00edval kombin\u00e1ciu ddclient + cloudflare. <\/p>\n

V\u0161etko bolo v poriadku, pokia\u013e ddclient prestal fungova\u0165. Trochu som ho sk\u00famal a zistil som, \u017ee pri\u0161iel \u010das na n\u00fadzov\u00e9 rie\u0161enia, preto\u017ee h\u013eadanie probl\u00e9mu za\u010dalo zabera\u0165 pr\u00edli\u0161 ve\u013ea \u010dasu. Nakoniec to vy\u00fastilo do mal\u00e9ho d\u00e9mona, ktor\u00fd jednoducho funguje, a to je presne to, \u010do potrebujem.
\nKto m\u00e1 z\u00e1ujem \u2013 vitajte pod katom.
\n<\/a><\/noindex><\/p>\n

Pou\u017eit\u00e9 n\u00e1stroje a ako \"to\" funguje<\/h3>\n

\nTak najprv som na str\u00e1nke cloudflare zistil v\u0161etko, \u010do potrebujem vedie\u0165 o API<\/a><\/noindex>. A u\u017e som sa chystal realizova\u0165 v\u0161etko na Pythone (po zozn\u00e1men\u00ed sa s Pythonom, ho \u010doraz \u010dastej\u0161ie pou\u017e\u00edvam na nejak\u00e9 jednoduch\u00e9 \u00falohy alebo ke\u010f potrebujem r\u00fdchlo vytvori\u0165 prototyp), ke\u010f som narazil na prakticky hotov\u00fa realiz\u00e1ciu.
\nCelkom na z\u00e1klade bola pou\u017eit\u00e1 ob\u00e1lka python-cloudflare<\/a><\/noindex>.<\/p>\n

Vzali sme jeden z pr\u00edkladov na aktualiz\u00e1ciu DNS a pridali sme pou\u017eitie konfigura\u010dn\u00e9ho s\u00faboru a mo\u017enos\u0165 aktualizova\u0165 nieko\u013eko A z\u00e1znamov v r\u00e1mci z\u00f3ny a prirodzene aj neobmedzen\u00fd po\u010det z\u00f3n.<\/p>\n

Logika je nasledovn\u00e1:<\/p>\n

    \n
  1. Skript z\u00edska zo s\u00faboru konfigur\u00e1cie zoznam z\u00f3n a prejde ich cyklom<\/li>\n
  2. V ka\u017edej z\u00f3ne skript prech\u00e1dza cyklom cez ka\u017ed\u00fa DNS z\u00e1znam typu A alebo AAAA a porovn\u00e1va verejn\u00fa IP s t\u00fdmto z\u00e1znamom<\/li>\n
  3. Ak sa IP l\u00ed\u0161i \u2014 men\u00ed ho, ak nie, presko\u010d\u00ed iter\u00e1ciu cyklu a prejde na \u010fal\u0161iu <\/li>\n
  4. Zasp\u00ed na \u010das uveden\u00fd v konfigura\u010dnom s\u00fabore<\/li>\n<\/ol>\n

    <\/p>\n

    In\u0161tal\u00e1cia a nastavenie<\/h3>\n

    \nAsi by sa dalo spravi\u0165 aj .deb bal\u00edk, ale v tomto nie som siln\u00fd, a nie je to a\u017e tak\u00e9 zlo\u017eit\u00e9.
    \nCel\u00fd proces som podrobne op\u00edsal v README.md na     str\u00e1nke repozit\u00e1ra<\/a><\/noindex>.<\/p>\n

    Ale pre ka\u017ed\u00fd pr\u00edpad to op\u00ed\u0161em po rusky v\u0161eobecne:<\/p>\n

      \n
    1. Uistite sa, \u017ee m\u00e1te nain\u0161talovan\u00fd python3 a python3-pip, ak nie \u2014 nain\u0161talujte (v syst\u00e9me Windows sa python3-pip in\u0161taluje spolu s Pythonom)<\/li>\n
    2. Kl\u00f3nujte alebo stiahnite repozit\u00e1r<\/li>\n
    3. Nain\u0161talujte potrebn\u00e9 z\u00e1vislosti.\n
      python3 -m pip install -r requirements.txt<\/code><\/pre>\n
      \n<\/li>\n
    4. Spustite in\u0161tala\u010dn\u00fd skript
      \nPre Linux:<\/p>\n
      chmod +x install.sh\nsudo .\/install.sh<\/code><\/pre>\n
      \nPre Windows: windows_install.bat\n<\/li>\n
    5. Upravte konfigura\u010dn\u00fd s\u00fabor
      \nPre Linux:<\/p>\n
      sudoedit \/etc\/zen-cf-ddns.conf<\/code><\/pre>\n
      \nPre Windows:<\/p>\n
      Otvorte s\u00fabor zen-cf-ddns.conf v prie\u010dinku, do ktor\u00e9ho ste nain\u0161talovali skript.<\/p>\n
      Toto je be\u017en\u00fd JSON s\u00fabor, nastavenia nie s\u00fa zlo\u017eit\u00e9 \u2013 \u0161peci\u00e1lne som pop\u00edsal ako pr\u00edklad 2 r\u00f4zne z\u00f3ny v \u0148om.\n<\/li>\n<\/ol>\n
      <\/p>\n
      \u010co sa skr\u00fdva za in\u0161tal\u00e1tormi?<\/h4>\n
      \ninstall.sh pre Linux:<\/p>\n
        \n
      1. Vytv\u00e1ra sa pou\u017e\u00edvate\u013e pre spustenie d\u00e9mona, bez vytvorenia domovsk\u00e9ho adres\u00e1ra a mo\u017enosti prihl\u00e1senia.\n
        sudo useradd -r -s \/bin\/false zen-cf-ddns<\/code><\/pre>\n
        \n<\/li>\n
      2. Vytv\u00e1ra sa s\u00fabor pre z\u00e1pis logu v \/var\/log\/<\/li>\n
      3. Rob\u00edme vlastn\u00edkom s\u00faboru logu ned\u00e1vno vytvoren\u00e9ho pou\u017e\u00edvate\u013ea<\/li>\n
      4. S\u00fabory sa kop\u00edruj\u00fa na svoje miesto (konfigura\u010dn\u00fd s\u00fabor do \/etc, spustite\u013en\u00fd s\u00fabor do \/usr\/bin, s\u00fabor slu\u017eby do \/lib\/systemd\/system)<\/li>\n
      5. Slu\u017eba sa aktivuje<\/li>\n<\/ol>\n
        \nwindows_install.bat pre Windows:<\/p>\n
          \n
        1. Kop\u00edruje spustite\u013en\u00fd s\u00fabor a konfigura\u010dn\u00fd s\u00fabor do prie\u010dinka zvolen\u00e9ho pou\u017e\u00edvate\u013eom<\/li>\n
        2. Vytv\u00e1ra \u00falohu v pl\u00e1nova\u010di na sp\u00fa\u0161\u0165anie skriptu pri \u0161tarte syst\u00e9mu
          \nschtasks \/create \/tn \"CloudFlare Update IP\" \/tr \"%newLocation%\" \/sc onstart<\/code>\n<\/li>\n<\/ol>\n
          \nPo zmene konfigur\u00e1cie je potrebn\u00e9 skript re\u0161tartova\u0165, v Linuxe je to jednoduch\u00e9 a zn\u00e1me:<\/p>\n
          sudo service zen-cf-ddns start\nsudo service zen-cf-ddns stop\nsudo service zen-cf-ddns restart\nsudo service zen-cf-ddns status\n<\/code><\/pre>\n
          \npre Windows bude potrebn\u00e9 ukon\u010di\u0165 proces pythonw a znovu spusti\u0165 skript (ve\u013emi sa mi nechce p\u00edsa\u0165 slu\u017ebu pre Windows v C#):<\/p>\n
          taskkill \/im pythonw.exe<\/code><\/pre>\n
          \nNa tomto sa in\u0161tal\u00e1cia a nastavenie dokon\u010dili, pou\u017e\u00edvajte to k \u0161\u0165astiu.<\/p>\n
          Pre t\u00fdch, ktor\u00ed chc\u00fa vidie\u0165 nie ve\u013emi pekn\u00fd k\u00f3d v Pythone, tu je repozit\u00e1r na GitHub<\/a><\/noindex>.<\/p>\n
          Licencia MIT, tak\u017ee s t\u00fdmto materi\u00e1lom robte, \u010do chcete.<\/p>\n
          P.S.: Ch\u00e1pem, \u017ee to vy\u0161lo trochu kostrbato, ale so svojou \u00falohou si porad\u00ed skvele.<\/p>\n
          UPD: 11.10.2019 17:37
          \nNa\u0161iel som e\u0161te 1 probl\u00e9m a ak by mi niekto poradil, ako ho vyrie\u0161i\u0165 \u2013 bol by som ve\u013emi v\u010fa\u010dn\u00fd.
          \nProbl\u00e9m je v tom, \u017ee ak nain\u0161talujete z\u00e1vislosti bez sudo python -m pip install -r …, moduly nebud\u00fa vidite\u013en\u00e9 pod pou\u017e\u00edvate\u013eom slu\u017eby, a nechcelo by sa mi prin\u00fati\u0165 pou\u017e\u00edvate\u013eov in\u0161talova\u0165 moduly pod sudo, navy\u0161e je to nespr\u00e1vne.
          \nAko spr\u00e1vne to urobi\u0165, aby to bolo pekn\u00e9?
          \nUPD: 11.10.2019 19:16 Probl\u00e9m bol vyrie\u0161en\u00fd pou\u017eit\u00edm venv.
          \nObjavilo sa nieko\u013eko zmien. Nov\u00e9 vydanie bude \u010doskoro.
          \n
          Zdroj:           habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
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