{"id":22717,"date":"2022-06-09T15:48:04","date_gmt":"2022-06-09T13:48:04","guid":{"rendered":"https:\/\/www.websupport.sk\/podpora\/?post_type=ht_kb&#038;p=22717"},"modified":"2022-06-14T14:28:46","modified_gmt":"2022-06-14T12:28:46","slug":"kubernetes-6-storage-pomocou-emptydir-a-hostpath","status":"publish","type":"ht_kb","link":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/","title":{"rendered":"Kubernetes &#8211; 6. Storage pomocou emptyDir a hostPath"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-5-taints-a-tolerations\/\">V piatom diele<\/a> sme predstavili \u010fal\u0161\u00ed sp\u00f4sob obmedzenia nasadenia podov iba na ur\u010dit\u00e9 nody. Zatia\u013e\u010do pomocou sady pravidiel Node Affinity obmedzujeme nasadenie podov ozna\u010den\u00edm nodov pomocou \u0161t\u00edtkov (Labels), v r\u00e1mci druhej mo\u017enosti ozna\u010dujeme nody pomocou Taint. V oboch pr\u00edpadoch v\u0161ak dosiahneme podobn\u00fd efekt a je na zv\u00e1\u017een\u00ed, ktor\u00fd sp\u00f4sob pri nasadzovan\u00ed konkr\u00e9tnych podov \u010di cel\u00e9ho deploymentu vyhovuje viac.<\/p>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-success\">Chcete si vytvori\u0165 vlastn\u00fd Kubernetes (K8s) klaster? Vysk\u00fa\u0161ajte si ho vo <a href=\"https:\/\/www.websupport.sk\/servery\/vdc\/\">Virtu\u00e1lnom d\u00e1tovom centre<\/a> od Websupportu.<\/p>\n\n\n\n<p>V tomto diele si uk\u00e1\u017eeme, ako syst\u00e9m Kubernetes zdiela \u00fadaje medzi kontajnermi jedn\u00e9ho podu (emptyDir), a tie\u017e ako uklad\u00e1 \u00fadaje, o ktor\u00e9 nechceme pr\u00eds\u0165, ke\u010f sa pod ukon\u010d\u00ed (hostPath).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ma\u017eeme nepotrebn\u00e9 slu\u017eby a nasadenia<\/h2>\n\n\n\n<p>Pred t\u00fdm, ako budeme pokra\u010dova\u0165, vyma\u017eeme nepotrebn\u00e9 slu\u017eby (services) a nasadenia (deployments), aby sme Kubernetes Cluster zbyto\u010dne neza\u0165azovali. Najsk\u00f4r vyp\u00ed\u0161eme zoznam spusten\u00fdch slu\u017eieb (prv\u00fd riadok) a akt\u00edvnych nasaden\u00ed (druh\u00fd riadok) na VPS <code>master<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get services<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get deployments<\/code><\/pre>\n\n\n\n<p>Potom nepotrebn\u00e9 slu\u017eby (prv\u00fd riadok) a nasadenia (druh\u00fd riadok) na VPS <code>master<\/code> zma\u017eeme (tu je nepotrebn\u00e1 slu\u017eba nazvan\u00e1 <code>nginx-service<\/code> a nepotrebn\u00e9 nasadenie <code>nginx-deployment<\/code>):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl delete service nginx-service<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl delete deployment nginx-deployment<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Nasadzujeme pod s \u00falo\u017eiskom<\/h2>\n\n\n\n<p>Syst\u00e9m Kubernetes pracuje s viacer\u00fdmi mechanizmami, v\u010faka ktor\u00fdm dok\u00e1\u017ee vytvori\u0165 a pou\u017ei\u0165 \u00falo\u017eisko (storage) mimo samotn\u00e9ho podu. V tomto n\u00e1vode predstav\u00edme dva z nich:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>emptyDir<\/strong> &#8211; tento mechanizmus vytvor\u00ed prie\u010dinok a\u017e ke\u010f sa pod nasad\u00ed na nod a existuje iba dovtedy, pokia\u013e existuje aj pod. Ide teda o do\u010dasn\u00e9 intern\u00e9 \u00falo\u017eisko, ke\u010f\u017ee spolu s vymazan\u00edm podu sa vyma\u017ee aj takto vytvoren\u00e9 \u00falo\u017eisko.<\/li><li><strong>hostPath<\/strong> &#8211; tento mechanizmus pripoj\u00ed s\u00fabor alebo prie\u010dinok k syst\u00e9mu s\u00faborov podu, pri\u010dom takto vytvoren\u00e9 extern\u00e9 \u00falo\u017eisko sa zachov\u00e1 aj po ukon\u010den\u00ed podu na syst\u00e9me s\u00faborov nodu.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Mechanizmus emptyDir<\/h3>\n\n\n\n<p>Mechanizmus na pripojenie intern\u00e9ho \u00falo\u017eiska <strong>emptyDir<\/strong> vytvor\u00ed \u00falo\u017eisko iba vo vn\u00fatri kontajnera. Spolu s odstr\u00e1nen\u00edm podu sa vyma\u017ee aj \u00falo\u017eisko vytvoren\u00e9 mechanizmom emptyDir. V\u0161etky kontajneri nasaden\u00e9 na rovnakom pode zdie\u013eaj\u00fa \u00falo\u017eisko vytvoren\u00e9 mechanizmom emptyDir, a to aj v in\u00fdch prie\u010dinkoch. Toto \u00falo\u017eisko zost\u00e1va zachovan\u00e9 aj po p\u00e1de kontajnera.<\/p>\n\n\n\n<p>Vytvor\u00edme s\u00fabor s n\u00e1zvom <code>pod-volume-emptydir.yaml<\/code> (prv\u00fd riadok), do ktor\u00e9ho zap\u00ed\u0161eme defin\u00edciu nasadenia podu (ostatn\u00e9 riadky):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nano ~\/pod-volume-emptydir.yaml<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: pod-volume-emptydir\nspec:\n  containers:\n  - image: nginx\n    name: container-volume-emptydir\n    volumeMounts:\n    - mountPath: \/opt\/container-emptydir\n      name: volume-emptydir\n  volumes:\n  - name: volume-emptydir\n    emptyDir: {}<\/code><\/pre>\n\n\n\n<p>Vlo\u017e\u00edme skop\u00edrovan\u00fd obsah, ulo\u017e\u00edme pomocou kl\u00e1vesovej skratky&nbsp;<code>Ctrl + X<\/code>&nbsp;a n\u00e1sledne stla\u010den\u00edm kl\u00e1vesu&nbsp;<code>y<\/code>&nbsp;a potvrden\u00edm kl\u00e1vesom&nbsp;<code>Enter<\/code>.<\/p>\n\n\n\n<p>Pod nasad\u00edme z vy\u0161\u0161ie vytvoren\u00e9ho konfigura\u010dn\u00e9ho s\u00faboru:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl create -f ~\/pod-volume-emptydir.yaml<\/code><\/pre>\n\n\n\n<p>Zist\u00edme, \u017ee vy\u0161\u0161ie spusten\u00fd pod s n\u00e1zvom <code>pod-volume-emptydir<\/code> sa nasadil na nod <code>worker-1<\/code> (prv\u00fd riadok) a \u017ee pripojenie extern\u00e9ho \u00falo\u017eiska prebehlo spr\u00e1vne (druh\u00fd riadok):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get pods -o wide<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl describe pod pod-volume-emptydir<\/code><\/pre>\n\n\n\n<p>Z nodu <code>master<\/code> sa prihl\u00e1sime do kontajnera podu s n\u00e1zvom <code>pod-volume-emptydir<\/code>, ktor\u00fd bol nasaden\u00fd na nod <code>worker-1<\/code>, aby sme overili, \u017ee prie\u010dinok <code>\/opt\/container-emptydir<\/code> existuje:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl exec -it pod-volume-emptydir -- \/bin\/bash<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/opt<\/code><\/pre>\n\n\n\n<p>Vyma\u017eeme vy\u0161\u0161ie \u0161pecifikovan\u00e9 nasadenie podu a s n\u00edm aj \u00falo\u017eisko vytvoren\u00e9 mechanizmom emptyDir:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl delete -f ~\/pod-volume-emptydir.yaml<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Mechanizmus hostPath<\/h3>\n\n\n\n<p>Mechanizmus na pripojenie extern\u00e9ho \u00falo\u017eiska <strong>hostPath<\/strong> si nastav\u00edme v textovom konfigura\u010dnom s\u00fabore vo form\u00e1te YAML. Vytvor\u00edme s\u00fabor s n\u00e1zvom <code>pod-volume-hostpath.yaml<\/code> (prv\u00fd riadok), do ktor\u00e9ho zap\u00ed\u0161eme defin\u00edciu nasadenia podu (ostatn\u00e9 riadky):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nano ~\/pod-volume-hostpath.yaml<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: v1\nkind: Pod\nmetadata:\n  name: pod-volume-hostpath\nspec:\n  containers:\n  - image: nginx\n    name: container-volume-hostpath\n    volumeMounts:\n    - mountPath: \/opt\/container-dir\n      name: volume-hostpath\n  volumes:\n  - name: volume-hostpath\n    hostPath:\n      path: \/host-dir\n      type: DirectoryOrCreate<\/code><\/pre>\n\n\n\n<p>Vlo\u017e\u00edme skop\u00edrovan\u00fd obsah, ulo\u017e\u00edme pomocou kl\u00e1vesovej skratky&nbsp;<code>Ctrl + X<\/code>&nbsp;a n\u00e1sledne stla\u010den\u00edm kl\u00e1vesu&nbsp;<code>y<\/code>&nbsp;a potvrden\u00edm kl\u00e1vesom&nbsp;<code>Enter<\/code>.<\/p>\n\n\n\n<p>V \u010dasti <code>spec.containers.volumeMounts.mountPath<\/code> ur\u010dujeme cestu k prie\u010dinku, ktor\u00fd sa m\u00e1 pou\u017ei\u0165 v kontajneri podu. V \u010dasti <code>spec.volumes.hostPath.path<\/code> zase \u0161pecifikujeme cestu k prie\u010dinku, ktor\u00fd existuje na worker nodoch (tu <code>worker-1<\/code> a\/alebo <code>worker-2<\/code>). V\u010faka <code>DirectoryOrCreate<\/code> sa neexistuj\u00face prie\u010dinky automaticky vytvoria.<\/p>\n\n\n\n<p>Pod nasad\u00edme z vy\u0161\u0161ie vytvoren\u00e9ho konfigura\u010dn\u00e9ho s\u00faboru:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl create -f ~\/pod-volume-hostpath.yaml<\/code><\/pre>\n\n\n\n<p>Zist\u00edme, \u017ee vy\u0161\u0161ie spusten\u00fd pod s n\u00e1zvom <code>pod-volume-hostpath<\/code> sa nasadil na nod <code>worker-1<\/code> (prv\u00fd riadok) a \u017ee pripojenie extern\u00e9ho \u00falo\u017eiska prebehlo spr\u00e1vne (druh\u00fd riadok):<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get pods -o wide<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl describe pod pod-volume-hostpath&nbsp;<\/code><\/pre>\n\n\n\n<p>Prihl\u00e1sime sa cez SSH na nod <code>worker-1<\/code> (prv\u00fd riadok), aby sme overili, \u017ee prie\u010dinok <code>\/host-dir<\/code> existuje (druh\u00fd riadok), \u010di\u017ee bol automaticky vytvoren\u00fd:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ssh pouzivatel@worker-1<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/<\/code><\/pre>\n\n\n\n<p>Rovnako sa z nodu <code>master<\/code> prihl\u00e1sime do kontajnera podu s n\u00e1zvom <code>pod-volume-hostpath<\/code>, ktor\u00fd bol nasaden\u00fd na nod <code>worker-1<\/code>, aby sme overili, \u017ee existuje aj prie\u010dinok <code>\/opt\/container-dir<\/code> vytvoren\u00fd v kontajneri s n\u00e1zvom <code>container-volume-hostpath<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl exec -it pod-volume-hostpath -- \/bin\/bash<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/opt<\/code><\/pre>\n\n\n\n<p>Oba prie\u010dinky existuj\u00fa a teraz e\u0161te over\u00edme, \u010di sa s\u00fabor vytvoren\u00fd v prie\u010dinku <code>\/host-dir<\/code> zobraz\u00ed aj v prie\u010dinku <code>\/opt\/container-dir<\/code>. V prie\u010dinku <code>\/host-dir<\/code> vytvor\u00edme s\u00fabor <code>test.txt<\/code>, ktor\u00fd by sa mal zobrazi\u0165 aj v prie\u010dinku kontajnera. Na node worker-1 teda spust\u00edme pr\u00edkaz:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo touch \/host-dir\/test.txt<\/code><\/pre>\n\n\n\n<p>Rovnak\u00fd s\u00fabor sa zobraz\u00ed aj v kontajneri podu s n\u00e1zvom <code>pod-volume-hostpath<\/code> v prie\u010dinku <code>\/opt\/container-dir<\/code>, \u010do si over\u00edme pr\u00edkazom v kontajneri:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/opt\/container-dir<\/code><\/pre>\n\n\n\n<p>Vyma\u017eeme vy\u0161\u0161ie \u0161pecifikovan\u00e9 nasadenie podu:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl delete -f ~\/pod-volume-hostpath.yaml<\/code><\/pre>\n\n\n\n<p>Zist\u00edme, \u017ee aj po vymazan\u00ed podu <code>pod-volume-hostpath<\/code> ostal obsah prie\u010dinka <code>\/host-dir<\/code> na node <code>worker-1<\/code> zachovan\u00fd. Na node <code>worker-1<\/code> spust\u00edme pr\u00edkaz:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ls \/host-dir<\/code><\/pre>\n\n\n\n<p class=\"wp-block-ht-blocks-messages wp-block-hb-message wp-block-hb-message--withicon is-style-info\">H\u013ead\u00e1te mana\u017eovan\u00fd Kubernetes? Vyu\u017eite slu\u017eby na\u0161ich sk\u00fasen\u00fdch profesion\u00e1lov na cloud native &#8211; radi v\u00e1m <a href=\"https:\/\/www.websupport.sk\/kontakt\/\" target=\"_blank\" rel=\"noreferrer noopener\">priprav\u00edme rie\u0161nie na mieru<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zhrnutie<\/h2>\n\n\n\n<p>V \u0161iestom diele sme uk\u00e1zali, ako k podu pripoji\u0165 intern\u00e9 \u00falo\u017eisko (storage) pomocou mechanizmu emptyDir, ktor\u00e9ho obsah zost\u00e1va zachovan\u00fd, pokia\u013e pod nevyma\u017eeme. Extern\u00e9 \u00falo\u017eisko zo syst\u00e9mu s\u00faborov nodu sme&nbsp; ku kontajneru pripojili pomocou mechanizmu hostPath, pri\u010dom sme si overili, \u017ee aj po vymazan\u00ed nasaden\u00e9ho podu obsah pripojen\u00e9ho prie\u010dinka zostal zachovan\u00fd.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V piatom diele sme predstavili \u010fal\u0161\u00ed sp\u00f4sob obmedzenia nasadenia podov iba na ur\u010dit\u00e9 nody. Zatia\u013e\u010do pomocou sady pravidiel Node Affinity obmedzujeme nasadenie podov ozna\u010den\u00edm nodov pomocou \u0161t\u00edtkov (Labels), v r\u00e1mci druhej mo\u017enosti ozna\u010dujeme nody pomocou Taint. V oboch pr\u00edpadoch v\u0161ak dosiahneme podobn\u00fd efekt a je na zv\u00e1\u017een\u00ed, ktor\u00fd sp\u00f4sob pri&#8230;<\/p>\n","protected":false},"author":28,"template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[468],"ht-kb-tag":[336,474,396,471,330,339,381,198,192],"class_list":["post-22717","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-kubernetes","ht_kb_tag-cli","ht_kb_tag-cloud-native","ht_kb_tag-kontajnery","ht_kb_tag-kubernetes","ht_kb_tag-linux","ht_kb_tag-open-source","ht_kb_tag-server","ht_kb_tag-ubuntu","ht_kb_tag-vdc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory\" \/>\n<meta property=\"og:description\" content=\"V piatom diele sme predstavili \u010fal\u0161\u00ed sp\u00f4sob obmedzenia nasadenia podov iba na ur\u010dit\u00e9 nody. Zatia\u013e\u010do pomocou sady pravidiel Node Affinity obmedzujeme nasadenie podov ozna\u010den\u00edm nodov pomocou \u0161t\u00edtkov (Labels), v r\u00e1mci druhej mo\u017enosti ozna\u010dujeme nody pomocou Taint. V oboch pr\u00edpadoch v\u0161ak dosiahneme podobn\u00fd efekt a je na zv\u00e1\u017een\u00ed, ktor\u00fd sp\u00f4sob pri...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/\" \/>\n<meta property=\"og:site_name\" content=\"Websupport centrum podpory\" \/>\n<meta property=\"article:modified_time\" content=\"2022-06-14T12:28:46+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Predpokladan\u00fd \u010das \u010d\u00edtania\" \/>\n\t<meta name=\"twitter:data1\" content=\"5 min\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/\",\"url\":\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/\",\"name\":\"Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory\",\"isPartOf\":{\"@id\":\"https:\/\/www.websupport.sk\/podpora\/#website\"},\"datePublished\":\"2022-06-09T13:48:04+00:00\",\"dateModified\":\"2022-06-14T12:28:46+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/#breadcrumb\"},\"inLanguage\":\"sk-SK\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.websupport.sk\/podpora\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Kubernetes &#8211; 6. Storage pomocou emptyDir a hostPath\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.websupport.sk\/podpora\/#website\",\"url\":\"https:\/\/www.websupport.sk\/podpora\/\",\"name\":\"Websupport centrum podpory\",\"description\":\"Radi v\u00e1m pom\u00f4\u017eeme s va\u0161im probl\u00e9mom\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.websupport.sk\/podpora\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"sk-SK\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/","og_locale":"sk_SK","og_type":"article","og_title":"Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory","og_description":"V piatom diele sme predstavili \u010fal\u0161\u00ed sp\u00f4sob obmedzenia nasadenia podov iba na ur\u010dit\u00e9 nody. Zatia\u013e\u010do pomocou sady pravidiel Node Affinity obmedzujeme nasadenie podov ozna\u010den\u00edm nodov pomocou \u0161t\u00edtkov (Labels), v r\u00e1mci druhej mo\u017enosti ozna\u010dujeme nody pomocou Taint. V oboch pr\u00edpadoch v\u0161ak dosiahneme podobn\u00fd efekt a je na zv\u00e1\u017een\u00ed, ktor\u00fd sp\u00f4sob pri...","og_url":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/","og_site_name":"Websupport centrum podpory","article_modified_time":"2022-06-14T12:28:46+00:00","twitter_card":"summary_large_image","twitter_misc":{"Predpokladan\u00fd \u010das \u010d\u00edtania":"5 min\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/","url":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/","name":"Kubernetes - 6. Storage pomocou emptyDir a hostPath - Websupport centrum podpory","isPartOf":{"@id":"https:\/\/www.websupport.sk\/podpora\/#website"},"datePublished":"2022-06-09T13:48:04+00:00","dateModified":"2022-06-14T12:28:46+00:00","breadcrumb":{"@id":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/#breadcrumb"},"inLanguage":"sk-SK","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.websupport.sk\/podpora\/kb\/kubernetes-6-storage-pomocou-emptydir-a-hostpath\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.websupport.sk\/podpora\/"},{"@type":"ListItem","position":2,"name":"Kubernetes &#8211; 6. Storage pomocou emptyDir a hostPath"}]},{"@type":"WebSite","@id":"https:\/\/www.websupport.sk\/podpora\/#website","url":"https:\/\/www.websupport.sk\/podpora\/","name":"Websupport centrum podpory","description":"Radi v\u00e1m pom\u00f4\u017eeme s va\u0161im probl\u00e9mom","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.websupport.sk\/podpora\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"sk-SK"}]}},"_links":{"self":[{"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb\/22717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb"}],"about":[{"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/types\/ht_kb"}],"author":[{"embeddable":true,"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/users\/28"}],"version-history":[{"count":2,"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb\/22717\/revisions"}],"predecessor-version":[{"id":22957,"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb\/22717\/revisions\/22957"}],"wp:attachment":[{"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/media?parent=22717"}],"wp:term":[{"taxonomy":"ht_kb_category","embeddable":true,"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb-category?post=22717"},{"taxonomy":"ht_kb_tag","embeddable":true,"href":"https:\/\/www.websupport.sk\/podpora\/wp-json\/wp\/v2\/ht-kb-tag?post=22717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}