{"id":87364,"date":"2020-07-07T13:42:29","date_gmt":"2020-07-07T11:42:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera"},"modified":"2020-07-07T13:42:29","modified_gmt":"2020-07-07T11:42:29","slug":"nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera","title":{"rendered":"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><b><i>Artikli t\u00f5lge on ettevalmistatud kursuse alguseks <noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/17x7\/\">\u201eLinuxi administraator. Virtualiseerimine ja klasterdamine\u201c<\/a><\/noindex>.<\/i><\/b><\/p>\n<p>\nDRBD (Distributed Replicated Block Device \u2014 jaotatud replikatsiooniga plokiseade) on jaotatud, paindlik ja universaalne lahendus andmete salvestamiseks Linuxile. See peegeldab plokiseadmete, n\u00e4iteks k\u00f5vakettade, partitsioonide, loogiliste mahtude jne sisu serverite vahel. See loob andmekoopiaid kahel salvestusseadmest, et \u00fche rikkimise korral saaks kasutada andmeid teisel.<\/p>\n<p>V\u00f5ib \u00f6elda, et see on midagi sarnast <noindex><a rel=\"nofollow\" href=\"https:\/\/www.tecmint.com\/create-raid1-in-linux\/\">v\u00f5rgukonfiguratsiooni RAID<\/a><\/noindex> 1 k\u00f5vaketastega, mis on peegeldatud erinevatele serveritele. Siiski ei toimi see sugugi nagu RAID (isegi mitte v\u00f5rgu RAID).<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Alguses kasutati DRBD peamiselt k\u00f5rgk\u00e4ttesaadavuse (HA \u2014 high availability) arvutiklastrites, kuid alates \u00fcheksandast versioonist saab seda kasutada ka pilvesalvestuslahenduste rakendamiseks.<\/p>\n<p>K\u00e4esolevas artiklis r\u00e4\u00e4gime, kuidas installida DRBD CentOS-is, ja anname l\u00fchikese \u00fclevaate selle kasutamisest salvestusruumi (partitsiooni) replikatsiooniks kahel serveril. See artikkel on ideaalne alustamiseks DRBD-ga Linuxis.<\/p>\n<h3>Testkeskkond<\/h3>\n<p>\nKasutame seda seadistust jaoks kahe s\u00f5lme klastrit.<\/p>\n<ul>\n<li>S\u00f5lm 1: 192.168.56.101 \u2013 tecmint.tecmint.lan<\/li>\n<li>S\u00f5lm 2: 192.168.56.102 \u2013 server1.tecmint.lan<\/li>\n<\/ul>\n<p><\/p>\n<h4>Samm 1: DRBD paketid paigaldamine<\/h4>\n<p>\nDRBD on rakendatud Linuxi kernelimoodulina. See toimib virtuaalse plokkseadmestiku draiverina, seega asub see s\u00fcsteemi sisend-v\u00e4ljundide virna k\u00f5ige madalamal tasemel.<\/p>\n<p>DRBD saab installida ELRepo v\u00f5i EPEL kaudu. Alustame ELRepo paketi allkirja v\u00f5tme importimise ja m\u00f5lemas s\u00f5lmes repode \u00fchendamisega, nagu allpool n\u00e4idatud.<\/p>\n<pre><code class=\"bash\"># rpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org\n# rpm -Uvh http:\/\/www.elrepo.org\/elrepo-release-7.0-3.el7.elrepo.noarch.rpm<\/code><\/pre>\n<p>Seej\u00e4rel tuleb inglise keelsete DRBD moodul ja utiliidid paigaldada m\u00f5lemasse s\u00f5lme j\u00e4rgmise k\u00e4su abil:<\/p>\n<pre><code class=\"bash\"># yum install -y kmod-drbd84 drbd84-utils<\/code><\/pre>\n<p>\nKui SELinux on aktiveeritud, tuleb teil seadistada poliitikad, et vabastada DRBD protsessid SELi kontrolli alt.<\/p>\n<pre><code class=\"bash\"># semanage permissive -a drbd_t\n<\/code><\/pre>\n<p>\nLisaks, kui teie s\u00fcsteemis t\u00f6\u00f6tab tulem\u00fc\u00fcr (firewalld), peate lisama DRBD port 7789, et lubada andmete s\u00fcnkroonimist kahe s\u00f5lme vahel.<\/p>\n<p>K\u00e4ivitage need k\u00e4sud esimese s\u00f5lme jaoks:<\/p>\n<pre><code class=\"bash\"># firewall-cmd --permanent --add-rich-rule='rule family=&quot;ipv4&quot;  source address=&quot;192.168.56.102&quot; port port=&quot;7789&quot; protocol=&quot;tcp&quot; accept'\n# firewall-cmd --reload<\/code><\/pre>\n<p>\nSeej\u00e4rel k\u00e4ivitage need k\u00e4sud teise s\u00f5lme jaoks:<\/p>\n<pre><code class=\"bash\"># firewall-cmd --permanent --add-rich-rule='rule family=&quot;ipv4&quot; source address=&quot;192.168.56.101&quot; port port=&quot;7789&quot; protocol=&quot;tcp&quot; accept'\n# firewall-cmd --reload<\/code><\/pre>\n<p><\/p>\n<h4>Samm 2. Madala taseme salvestuse ettevalmistamine<\/h4>\n<p>\nN\u00fc\u00fcd, kui DRBD on paigaldatud m\u00f5lemale klastris\u00f5lmele, peame nendele ette valmistama ligikaudu sama suurusega salvestuspiirkonnad. See v\u00f5ib olla k\u00f5vaketta partitsioon (v\u00f5i tervik f\u00fc\u00fcsiline k\u00f5vaketas), RAID-i tarkseade, <noindex><a rel=\"nofollow\" href=\"https:\/\/www.tecmint.com\/create-lvm-storage-in-linux\/\">loogiline LVM mahtu<\/a><\/noindex> v\u00f5i m\u00f5ni muu t\u00fc\u00fcpi plokiseade, mis asub teie s\u00fcsteemis.<\/p>\n<p>K\u00e4esolevas artiklis loome testplokiseadmest 2 GB suuruse, kasutades k\u00e4sku dd.<\/p>\n<pre><code class=\"bash\"># dd if=\/dev\/zero of=\/dev\/sdb1 bs=2024k count=1024<\/code><\/pre>\n<p>\nOletame, et see on kasutamata partitsioon (\/dev\/sdb1) teisel plokiseadmel (\/dev\/sdb), mis on \u00fchendatud m\u00f5lema s\u00f5lmega.<\/p>\n<h4>Samm 3. DRBD seadistamine<\/h4>\n<p>\nDRBD-i peamine konfiguratsioonifail \u2014 <code>\/etc\/drbd.conf<\/code>, ning t\u00e4iendavad konfiguratsioonifailid on saadaval kataloogis <code>\/etc\/drbd.d<\/code>.<\/p>\n<p>Salvestuse replitseerimiseks peame lisama vajalikud seadistused faili <code>\/etc\/drbd.d\/global_common.conf<\/code>, mis sisaldab DRBD-i globaalseid ja \u00fchiseid seadistusi, ning ressursid peavad olema m\u00e4\u00e4ratletud <code>.res<\/code> failides.<\/p>\n<p>Teeme varukoopia algsest failist m\u00f5lemal s\u00f5lmel ja seej\u00e4rel avame uue faili redigeerimiseks (kasutage endale meelep\u00e4rast tekstiredaktorit).<\/p>\n<pre><code class=\"bash\"># mv \/etc\/drbd.d\/global_common.conf \/etc\/drbd.d\/global_common.conf.orig\n# vim \/etc\/drbd.d\/global_common.conf <\/code><\/pre>\n<p>\nLisage m\u00f5lemasse faili j\u00e4rgmised read:<\/p>\n<pre><code class=\"bash\">global {\n usage-count  yes;\n}\ncommon {\n net {\n  protocol C;\n }\n}<\/code><\/pre>\n<p>\nSalvestage fail ja seej\u00e4rel sulgege toimetaja.<\/p>\n<p>V\u00f5tame hetkeks ette protokolli C. DRBD toetab kolme erinevat replikatsiooni re\u017eiimi (st kolme erinevat s\u00fcnkroniseerimise astet), nimelt:<\/p>\n<ul>\n<li>protokoll A: as\u00fcnkroonne replikatsiooni protokoll; kasutatakse k\u00f5ige sagedamini pika vahemaa replikatsiooni stsenaariumides.<\/li>\n<li>protokoll B: pool-s\u00fcnkroonne replikatsiooni protokoll v\u00f5i s\u00fcnkroonne m\u00e4luprotokoll.<\/li>\n<li>protokoll C: kasutatakse tavaliselt v\u00e4ikeste vahemaadega s\u00f5lmede jaoks; see on \u00fcldiselt k\u00f5ige sagedamini kasutatav replikatsiooni protokoll DRBD seadistustes.<\/li>\n<\/ul>\n<p>\n<b>Oluline<\/b>: <i>Valitud replikatsiooni protokoll m\u00f5jutab kahte kasutuselev\u00f5tu tegurit: kaitse ja latentsus. L\u00e4bipaistvus, vastupidi, ei s\u00f5ltu olulisel m\u00e4\u00e4ral valitud replikatsiooni protokollist.<\/i><\/p>\n<h4>Samm 4. Ressursi lisamine<\/h4>\n<p>\nRessurss (Resource) on kogum m\u00f5isted, mis viitab k\u00f5ikidele konkreetse replitseeritava andmekogumi aspektidele. M\u00e4\u00e4ratleme meie ressursi failis <code>\/etc\/drbd.d\/test.res<\/code>.<\/p>\n<p>Lisage j\u00e4rgmine m\u00f5lemasse s\u00f5lme faili (\u00e4rge unustage muuta muutujad oma keskkonna tegelike v\u00e4\u00e4rtustega).<\/p>\n<p>P\u00f6\u00f6rake t\u00e4helepanu hostinimedele, peame n\u00e4itama v\u00f5rgu hostinime, mille saame k\u00e4suga uname. <code>v\u00e4ljaande numbri m\u00e4\u00e4ramiseks:<\/code>.<\/p>\n<pre><code class=\"bash\">resource test {\n        on tecmint.tecmint.lan {\n \t\tdevice \/dev\/drbd0;\n       \t\tdisk \/dev\/sdb1;\n        \t\tmeta-disk internal;\t\n                \taddress 192.168.56.101:7789;\n        }\n        on server1.tecmint.lan  {\n\t\tdevice \/dev\/drbd0;\n        \t\tdisk \/dev\/sdb1;\n        \t\tmeta-disk internal;\n                \taddress 192.168.56.102:7789;\n        }\n}\n}<\/code><\/pre>\n<p>\nkus:<\/p>\n<ul>\n<li><i>hostinimi<\/i>: on lauseosa, mis viitab sisemise konfiguratsiooni operaatorile.<\/li>\n<li><i>test<\/i>: see on uue ressursi nimi.<\/li>\n<li><i>device \/dev\/drbd0<\/i>: viitab uuele virtuaalsele plokiseadmelle, mida juhib DRBD.<\/li>\n<li><i>disk \/dev\/sdb1<\/i>: see on plokiseadme partitsioon, mis on DRBD seadme varukoopia.<\/li>\n<li><i>meta-disk<\/i>: m\u00e4\u00e4ratleb, kus DRBD hoiab oma metaandmeid. Internal t\u00e4hendab, et DRBD salvestab oma metaandmed samale f\u00fc\u00fcsilisele madala taseme seadmele, kus on ka tootmisandmed.<\/li>\n<li><i>address<\/i>: m\u00e4\u00e4rab vastava s\u00f5lme IP-aadressi ja pordinumbri.<\/li>\n<\/ul>\n<p>\nPange t\u00e4hele, et kui m\u00f5lemal hostil on parameetrid samade v\u00e4\u00e4rtustega, saate need otse ressursiosas m\u00e4\u00e4rata.<\/p>\n<p>N\u00e4iteks v\u00f5ib eespool toodud konfiguratsiooni \u00fcmber korraldada j\u00e4rgmiselt:<\/p>\n<pre><code class=\"bash\">resource test {\n\tdevice \/dev\/drbd0;\n\tdisk \/dev\/sdb1;\n        \tmeta-disk internal;\t\n        \ton tecmint.tecmint.lan {\n \t\taddress 192.168.56.101:7789;\n        \t}\n        \ton server1.tecmint.lan  {\n\t\taddress 192.168.56.102:7789;\n        \t\t}\n}<\/code><\/pre>\n<p><\/p>\n<h4>Samm 5. Ressursi initsialiseerimine ja k\u00e4ivitamine<\/h4>\n<p>\nDRBD-ga suhtlemiseks kasutame j\u00e4rgmisi haldust\u00f6\u00f6riistu (mis suhtlevad tuumamooduliga DRBD ressursside seadistamiseks ja haldamiseks):<\/p>\n<ul>\n<li><i>drbdadm<\/i>: DRBD-i k\u00f5rgema taseme haldust\u00f6\u00f6riist.<\/li>\n<li><i>drbdsetup<\/i>: madalama taseme haldust\u00f6\u00f6riist, mis \u00fchendab DRBD-seadmed nende varundusseadmetega, seadistab DRBD-seadmete paare nende varundusseadmete peegeldamiseks ja kontrollib t\u00f6\u00f6tavate DRBD-seadmete konfiguratsiooni.<\/li>\n<li><i>Drbdmeta<\/i>: metaandmete haldust\u00f6\u00f6riist.<\/li>\n<\/ul>\n<p>\nP\u00e4rast k\u00f5igi ressursi algkonfiguratsioonide lisamist peame k\u00e4ivitama ressursi m\u00f5lemal s\u00f5lmel.<\/p>\n<pre><code class=\"bash\"># drbdadm create-md test<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/cf084d17f60a125225f2b75668515d4f.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Metaandmete salvestuse initsialiseerimine<\/i><\/p>\n<p>Seej\u00e4rel peame selle k\u00e4ivitama, mis \u00fchendab ressursi tema varundusseadmest, seej\u00e4rel seadistab replikatsiooni parameetrid ja \u00fchendab ressursi oma eeriga:<\/p>\n<pre><code class=\"bash\"># drbdadm up test<\/code><\/pre>\n<p>\nN\u00fc\u00fcd, kui k\u00e4ivitate k\u00e4su <noindex><a rel=\"nofollow\" href=\"https:\/\/www.tecmint.com\/commands-to-collect-system-and-hardware-information-in-linux\/\">lsblk<\/a><\/noindex>, te m\u00e4rkate, et seade\/maht DRBD drbd0 on seotud varureaga <code>\/dev\/sdb1<\/code>:<\/p>\n<pre><code class=\"bash\"># lsblk<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/afb0be2e739c3ce71a556e78c8a55f07.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Plokiseadmete loend<\/i><\/p>\n<p>Ressursi peatamiseks k\u00e4ivitage:<\/p>\n<pre><code class=\"bash\"># drbdadm down test<\/code><\/pre>\n<p>\nRessursi oleku kontrollimiseks k\u00e4ivitage j\u00e4rgmine k\u00e4sk (palun pane t\u00e4hele, et sellel etapil on diskide olek oodatav <i>Konsistentne\/Konsistentne<\/i>):<\/p>\n<pre><code class=\"bash\"># drbdadm status test\nOR\n# drbdsetup status test --verbose --statistics \t#for  a more detailed status<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/a45da69bfbc4199ef263359b623fdd05.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Ressursi oleku kontrollimine<br \/>\nkohta<\/i><\/p>\n<h4>Samm 6: Peamise ressursi\/seadme algsest s\u00fcnkroonimise allika seadistamine<\/h4>\n<p>\nK\u00e4esoleval etapil on DRBD juba t\u00f6\u00f6ks valmis. N\u00fc\u00fcd peame m\u00e4\u00e4rama, millist s\u00f5lme kasutada seadmete algsena s\u00fcnkroonimise allikana.<\/p>\n<p>K\u00e4ivitage j\u00e4rgmine k\u00e4sk ainult \u00fchel s\u00f5lmel, et alustada esialgset t\u00e4ielikku s\u00fcnkroonimist:<\/p>\n<pre><code class=\"bash\"># drbdadm primary --force test\n# drbdadm status test<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/6505d6350609e03da02f30eeafecd72c.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Peamise s\u00f5lme seadistamine algse seadmena<\/i><br \/>\nP\u00e4rast s\u00fcnkroonimise l\u00f5petamist peab m\u00f5lema diski olek olema Ajakohane.<\/p>\n<h4>Samm 7: DRBD seadistuse testimine <\/h4>\n<p>\nL\u00f5finally, peame kontrollima, kas DRBD seade t\u00f6\u00f6tab nagu peab, et salvestada replikatsiooniandmeid. Pidage meeles, et kasutasime t\u00fchi ketta mahtu, seega peame seadme peal failis\u00fcsteemi looma ja selle monteerima, et kontrollida, kas saame seda replikatsiooniandmete salvestamiseks kasutada.<\/p>\n<p>Peame seadme peal failis\u00fcsteemi looma j\u00e4rgmise k\u00e4suga s\u00f5lmes, kus alustasime algset t\u00e4ielikku s\u00fcnkroniseerimist (kus on ressurss p\u00f5hivooluga):<\/p>\n<pre><code class=\"bash\"># mkfs -t ext4 \/dev\/drbd0<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/32c9ac65a06993e58d9ce3b568fadca1.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Loome failis\u00fcsteemi Drbd mahtul<\/i><\/p>\n<p>Seej\u00e4rel monteerige see nagu n\u00e4idatud (v\u00f5ite anda monteerimispunktile sobiva nime):<\/p>\n<pre><code class=\"bash\"># mkdir -p \/mnt\/DRDB_PRI\/\n# mount \/dev\/drbd0 \/mnt\/DRDB_PRI\/\n<\/code><\/pre>\n<p>\nN\u00fc\u00fcd kopeerige v\u00f5i looge m\u00f5ned failid \u00fclaltoodud monteerimispunktis ja tehke pikk loend k\u00e4suga <noindex><a rel=\"nofollow\" href=\"https:\/\/www.tecmint.com\/tag\/linux-ls-command\/\">ls k\u00e4sk<\/a><\/noindex>:<\/p>\n<pre><code class=\"bash\"># cd \/mnt\/DRDB_PRI\/\n# ls -l <\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/a32321e2b5c587215dc06d2b3960a4bc.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Kuvatakse p\u00f5himahtu Drbd sisu loend<\/i><\/p>\n<p>Seej\u00e4rel des monteerige seade (veenduge, et monteerimine pole avatud, vahetage katalooge p\u00e4rast des monteerimist, et v\u00e4ltida vigu) ja muutke s\u00f5lme rolli p\u00f5hivoolust teiseks:<\/p>\n<pre><code class=\"bash\"># umount \/mnt\/DRDB_PRI\/\n# cd\n# drbdadm secondary test<\/code><\/pre>\n<p>\nTeine s\u00f5lm (kus on ressurss sekundaarse rolliga) tehke esmaseks, seej\u00e4rel \u00fchendage sellele seade ja viige l\u00e4bi pikk installimispunktide loetelu. Kui seade t\u00f6\u00f6tab normaalselt, peavad k\u00f5ik sellel mahtul salvestatud failid olema seal:<\/p>\n<pre><code class=\"bash\"># drbdadm primary test\n# mkdir -p \/mnt\/DRDB_SEC\/\n# mount \/dev\/drbd0 \/mnt\/DRDB_SEC\/\n# cd \/mnt\/DRDB_SEC\/\n# ls  -l <\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Seame DRBD kahe CentOS 7 serveri vahel salvestusruumi replikatsiooniks\" src=\"\/wp-content\/uploads\/2020\/07\/c54d7754a01987765a19b5bde95fc555.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>DRBD seadistuse kontroll, mis t\u00f6\u00f6tab sekundaarse s\u00f5lme peal.<\/i><\/p>\n<p>Lisateabe saamiseks p\u00f6\u00f6rduge haldust\u00f6\u00f6riistade abi lehtede poole:<\/p>\n<pre><code class=\"bash\"># man drbdadm\n# man drbdsetup\n# man drbdmeta<\/code><\/pre>\n<p>\nAbi: <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.linbit.com\/docs\/users-guide-8.4\/\">DRBD kasutusjuhend<\/a><\/noindex>.<\/p>\n<h4>Kokkuv\u00f5te<\/h4>\n<p>\nDRBD on \u00e4\u00e4rmiselt paindlik ja mitmek\u00fclgne, muutes selle salvestuse replikatsiooni lahenduseks, mis sobib HA lisamiseks praktiliselt igasse rakendusse. Selles artiklis n\u00e4itasime, kuidas installida DRBD CentOS 7-s ning andsime l\u00fchikese \u00fclevaate selle kasutamisest salvestuse replikatsiooniks. Jagage julgelt oma m\u00f5tteid meiega alloleva tagasiside vormi kaudu.<\/p>\n<p>\n<noindex><a rel=\"nofollow\" href=\"https:\/\/otus.pw\/17x7\/\">Uuri kursuse kohta l\u00e4hemalt.<\/a><\/noindex><\/p>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/otus\/blog\/509710\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00ab\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 Linux. \u0412\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u044f\u00bb. DRBD (Distributed Replicated Block Device \u2014 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0435 \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u043e\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0435, \u0433\u0438\u0431\u043a\u043e\u0435 \u0438 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f Linux. \u041e\u043d\u043e \u043e\u0442\u0440\u0430\u0436\u0430\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0436\u0435\u0441\u0442\u043a\u0438\u0435 \u0434\u0438\u0441\u043a\u0438, \u0440\u0430\u0437\u0434\u0435\u043b\u044b, \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0442\u043e\u043c\u0430 \u0438 \u0442.\u0434. \u043c\u0435\u0436\u0434\u0443 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438. \u041e\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u043a\u043e\u043f\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":87365,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-87364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00ab\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 Linux. \u0412\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u044f\u00bb. DRBD (Distributed Replicated Block Device \u2014 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0435 \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u043e\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0435, \u0433\u0438\u0431\u043a\u043e\u0435 \u0438 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f Linux. \u041e\u043d\u043e \u043e\u0442\u0440\u0430\u0436\u0430\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0436\u0435\u0441\u0442\u043a\u0438\u0435 \u0434\u0438\u0441\u043a\u0438, \u0440\u0430\u0437\u0434\u0435\u043b\u044b, \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0442\u043e\u043c\u0430 \u0438 \u0442.\u0434. \u043c\u0435\u0436\u0434\u0443 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438. \u041e\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u043a\u043e\u043f\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"et_EE\" \/>\n\t\t<meta property=\"og:site_name\" content=\"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u041d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c DRBD \u0434\u043b\u044f \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 \u043d\u0430 \u0434\u0432\u0430 CentOS 7 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00ab\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 Linux. \u0412\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u044f\u00bb. DRBD (Distributed Replicated Block Device \u2014 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0435 \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u043e\u0435 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u043e) \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0435, \u0433\u0438\u0431\u043a\u043e\u0435 \u0438 \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0430\u043b\u044c\u043d\u043e \u0440\u0435\u043f\u043b\u0438\u0446\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0434\u043b\u044f Linux. \u041e\u043d\u043e \u043e\u0442\u0440\u0430\u0436\u0430\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u0431\u043b\u043e\u0447\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u0442\u0430\u043a\u0438\u0445 \u043a\u0430\u043a \u0436\u0435\u0441\u0442\u043a\u0438\u0435 \u0434\u0438\u0441\u043a\u0438, \u0440\u0430\u0437\u0434\u0435\u043b\u044b, \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0442\u043e\u043c\u0430 \u0438 \u0442.\u0434. \u043c\u0435\u0436\u0434\u0443 \u0441\u0435\u0440\u0432\u0435\u0440\u0430\u043c\u0438. \u041e\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u043a\u043e\u043f\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-07-07T11:42:29+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-07-07T11:42:29+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Seadistame DRBD ladustamise replitseerimiseks kahel CentOS 7 serveril | ProHoster","description":"Artikli t\u00f5lge on valmis seoses kursuse \"Linuxi administraator. Virtualiseerimine ja klasterdamine\" algusega. DRBD (Distributed Replicated Block Device \u2014 jagatud replitseeritud plokkseade) on jaotatud, paindlik ja universaalne andmete salvestamise lahendus Linuxile. See peegeldab plokkseadmete, nagu k\u00f5vakettad, jagunemised, loogilised mahud jne, sisu serverite vahel. See loob andmete koopiaid","canonical_url":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/nastraivaem-drbd-dlya-replikaczii-hranilishha-na-dva-centos-7-servera","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041d\u0430\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c DRBD \u0434\u043b\u044f \u0440\u0435\u043f\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 \u043d\u0430 \u0434\u0432\u0430 CentOS 7 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 | ProHoster","og:description":"\u041f\u0435\u0440\u0435\u0432\u043e\u0434 \u0441\u0442\u0430\u0442\u044c\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u0432 \u043f\u0440\u0435\u0434\u0434\u0432\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0440\u0442\u0430 \u043a\u0443\u0440\u0441\u0430 \u00ab\u0410\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 Linux. \u0412\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0438 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u044f\u00bb. 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