{"id":24293,"date":"2023-05-19T13:55:43","date_gmt":"2023-05-19T11:55:43","guid":{"rendered":"https:\/\/www.websupport.sk\/podpora\/?post_type=ht_kb&#038;p=24293"},"modified":"2023-05-19T15:12:27","modified_gmt":"2023-05-19T13:12:27","slug":"terraform-v-prostredi-vdc-automatizujeme-vytvaranie-instancii","status":"publish","type":"ht_kb","link":"https:\/\/www.websupport.sk\/podpora\/kb\/terraform-v-prostredi-vdc-automatizujeme-vytvaranie-instancii\/","title":{"rendered":"Terraform v prostred\u00ed VDC &#8211; automatizujeme vytv\u00e1ranie in\u0161tanci\u00ed"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.websupport.sk\/podpora\/kb\/terraform-v-prostredi-vdc-zakladne-informacie-vyhody-a-instalacia\/\">V prvej \u010dasti seri\u00e1lu o n\u00e1stroji Terraform<\/a> v syst\u00e9me OpenStack sme oba produkty predstavili. Z\u00e1rove\u0148 sme uviedli d\u00f4vody, pre ktor\u00e9 je vhodn\u00e9 pou\u017ei\u0165 n\u00e1stroj Terraform. Rovnako sme uk\u00e1zali ako nain\u0161talova\u0165 Terraform a ako si zo syst\u00e9mu OpenStack stiahnu\u0165 inform\u00e1cie potrebn\u00e9 na pripojenie a pou\u017eitie n\u00e1stroja Terraform. V tejto \u010dasti vytvor\u00edme in\u0161tancie v syst\u00e9me OpenStack pomocou n\u00e1stroja Terraform.<\/p>\n\n\n\n<p>Namiesto toho, aby sme vo webovom prostred\u00ed VDC na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/project\/\">cloud.websupport.sk<\/a> ru\u010dne vyklik\u00e1vali nastavenia in\u0161tanci\u00ed, nech\u00e1me to automatizova\u0165 Terraform za presne stanoven\u00fdch podmienok. Podmienky pre Terraform, pod\u013ea ktor\u00fdch bude postupne automaticky vytv\u00e1ra\u0165 virtu\u00e1lne stroje s virtu\u00e1lnymi diskami a sie\u0165ami, zap\u00ed\u0161eme do s\u00faborov vo form\u00e1te stanovenom spolo\u010dnos\u0165ou HashiCorp.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pr\u00edprava prostredia VDC<\/h2>\n\n\n\n<p><a href=\"https:\/\/cloud.websupport.sk\/horizon\/auth\/login\/?next=\/horizon\/project\/\">Vo webovom rozhran\u00ed VDC<\/a> najsk\u00f4r mus\u00edme vytvori\u0165 a skontrolova\u0165 toto:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:19px\">V \u010dasti <a href=\"https:\/\/cloud.websupport.sk\/horizon\/auth\/login\/?next=\/horizon\/project\/key_pairs\/\">Compute &#8211; Key Pairs <\/a>vytvor\u00edme nov\u00fd p\u00e1r k\u013e\u00fa\u010dov, pri\u010dom verejn\u00fa \u010das\u0165 k\u013e\u00fa\u010da pou\u017eijeme ni\u017e\u0161ie pri konfigur\u00e1cii Terraformu (v hodnote premennej <code>vdc_ssh_pub_key<\/code>).<\/li>\n\n\n\n<li style=\"font-size:19px\">Ubezpe\u010d\u00edme sa, \u017ee m\u00e1me k dispoz\u00edcii verejn\u00fa IP adresu v \u010dasti <a href=\"https:\/\/cloud.websupport.sk\/horizon\/auth\/login\/?next=\/horizon\/project\/floating_ips\/\">Network &#8211; Floating IPs<\/a>. T\u00fato Terraform automaticky pridel\u00ed in\u0161tancii, ktor\u00fa vytvor\u00ed.<\/li>\n<\/ol>\n\n\n\n<p>V r\u00e1mci tohto n\u00e1vodu budeme pracova\u0165 so s\u00fabormi, ktor\u00e9 s\u00fa verejne dostupn\u00e9 v Git repozit\u00e1ri na adrese <a href=\"https:\/\/github.com\/tiborepcek\/terraform\">github.com\/tiborepcek\/terraform<\/a> a s\u00fa prisp\u00f4soben\u00e9 tak, aby \u010do najlep\u0161ie fungovali na VDC od WebSupportu. Po spr\u00e1vnom vyplnen\u00ed premenn\u00fdch v s\u00fabore <code>terraform.tfvars<\/code> sta\u010d\u00ed cez n\u00e1stroj Terraform konfigura\u010dn\u00e9 s\u00fabory u\u017e iba aplikova\u0165. Po\u010fme si cel\u00fd proces postupne ozrejmi\u0165.<\/p>\n\n\n\n<p>V prvom rade vy\u0161\u0161ie spom\u00ednan\u00fd Git repozit\u00e1r stiahneme\/naklonujeme do v prvom diele vytvorenom prie\u010dinku:<\/p>\n\n\n\n<p><code>cd ~\/websupport_openstack<\/code><\/p>\n\n\n\n<p><code>git clone https:\/\/github.com\/tiborepcek\/terraform.git<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Povinn\u00e9 premenn\u00e9<\/h2>\n\n\n\n<p>V repozit\u00e1ri sa nach\u00e1dza viacero s\u00faborov, no pre n\u00e1s je podstatn\u00fd predov\u0161etk\u00fdm s\u00fabor <code>terraform.tfvars<\/code>, preto\u017ee obsahuje premenn\u00e9, ktor\u00fdch hodnoty<code> &lt;change_me><\/code> mus\u00edme nahradi\u0165 unik\u00e1tnymi pre na\u0161u in\u0161tanciu VDC. Povinn\u00e9 premenn\u00e9 s\u00fa tieto \u0161tyri:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>openstack_user_name <\/code>&#8211; prihlasovacie meno (user name), ktor\u00fdm sa prihlasujeme do webov\u00e9ho rozhrania VDC od WebSupportu na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/auth\/login\/\">cloud.websupport.sk\/horizon\/auth\/login<\/a>.<\/li>\n\n\n\n<li><code>openstack_tenant_name<\/code> &#8211; rovnak\u00e9 ako <code>openstack_user_name<\/code><\/li>\n\n\n\n<li><code>openstack_password<\/code> &#8211; prihlasovacie heslo (password), ktor\u00fdm sa prihlasujeme do webov\u00e9ho rozhrania VDC od WebSupportu na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/auth\/login\/\">cloud.websupport.sk\/horizon\/auth\/login<\/a>.<\/li>\n\n\n\n<li><code>vdc_ssh_pub_key<\/code> &#8211; skop\u00edrujeme cel\u00fd verejn\u00fd k\u013e\u00fa\u010d (public key) pod\u013ea obr\u00e1zku ni\u017e\u0161ie:<\/li>\n<\/ol>\n\n\n\n<p>WebSupport VDC &#8211; verejn\u00fd k\u013e\u00fa\u010d (public key)<\/p>\n\n\n\n<p><img decoding=\"async\" class=\"wp-block-image size-large\" src=\"https:\/\/www.websupport.sk\/podpora\/app\/uploads\/sites\/2\/2023\/05\/WebSupport-VDC-verejny-kluc-public-key-1.png\" alt=\"\"><\/p>\n\n\n\n<p>Obr\u00e1zok: <a href=\"https:\/\/tiborepcek.com\/nc\/index.php\/s\/jA6692QoZCciyrx\">https:\/\/tiborepcek.com\/nc\/index.php\/s\/jA6692QoZCciyrx<\/a>&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Ostatn\u00e9 premenn\u00e9<\/h2>\n\n\n\n<p>Hodnotu t\u00fdchto premenn\u00fdch teoreticky netreba meni\u0165, ur\u010dite ju v\u0161ak skontrolujte pri ka\u017edej jednej premennej, aby ste sa uistili, \u017ee zodpoved\u00e1 va\u0161im po\u017eiadavk\u00e1m.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li style=\"font-size:19px\"><code>vdc_image<\/code> &#8211; n\u00e1zov obrazu (opera\u010dn\u00e9ho syst\u00e9mu), ktor\u00fd sa aplikuje na novovytvoren\u00fd virtu\u00e1lny stroj (Virtual Machine, \u010di\u017ee VM). V\u0161etky dostupn\u00e9 s\u00fa uveden\u00e9 na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/project\/images\">cloud.websupport.sk\/horizon\/project\/images<\/a>. V tomto n\u00e1vode pou\u017eijeme \u201cUbuntu 22.04 LTS\u201d pre v\u0161etky virtu\u00e1lne stroje.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_lb <\/code>&#8211; po\u010det virtu\u00e1lnych strojov vytvoren\u00fdch pre server pou\u017eit\u00fd ako Load Balancer (LB), pri\u010dom minim\u00e1lny po\u010det je 1 a maxim\u00e1lny 3.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_web<\/code> &#8211; po\u010det virtu\u00e1lnych strojov vytvoren\u00fdch pre server pou\u017eit\u00fd ako webov\u00fd server, pri\u010dom minim\u00e1lny po\u010det je 1 a maxim\u00e1lny 3.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_db<\/code> &#8211; po\u010det virtu\u00e1lnych strojov vytvoren\u00fdch pre server pou\u017eit\u00fd ako datab\u00e1zov\u00fd server, pri\u010dom minim\u00e1lny po\u010det je 1 a maxim\u00e1lny 3.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_flavor_lb<\/code> &#8211; po\u010det virtu\u00e1lnych procesorov (\u010d\u00edslo za p\u00edsmenom c) a ve\u013ekos\u0165 pam\u00e4te RAM v GB (\u010d\u00edslo za p\u00edsmenom m), uistite sa teda, \u010di m\u00e1te dostatok vo\u013en\u00fdch prostriedkov aj po vyn\u00e1soben\u00ed \u010d\u00edslom z premennej vdc_lb.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_flavor_web<\/code> &#8211; po\u010det virtu\u00e1lnych procesorov (\u010d\u00edslo za p\u00edsmenom c) a ve\u013ekos\u0165 pam\u00e4te RAM v GB (\u010d\u00edslo za p\u00edsmenom m), uistite sa teda, \u010di m\u00e1te dostatok vo\u013en\u00fdch prostriedkov aj po vyn\u00e1soben\u00ed \u010d\u00edslom z premennej vdc_web.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_flavor_db<\/code> &#8211; po\u010det virtu\u00e1lnych procesorov (\u010d\u00edslo za p\u00edsmenom c) a ve\u013ekos\u0165 pam\u00e4te RAM v GB (\u010d\u00edslo za p\u00edsmenom m), uistite sa teda, \u010di m\u00e1te dostatok vo\u013en\u00fdch prostriedkov aj po vyn\u00e1soben\u00ed \u010d\u00edslom z premennej vdc_db.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_volume_lb<\/code> &#8211; ve\u013ekos\u0165 virtu\u00e1lneho disku v GB, \u010di\u017ee sa uistite, \u010di m\u00e1te dostatok vo\u013en\u00e9ho miesta z celkovo dostupn\u00e9ho na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/project\/\">cloud.websupport.sk\/horizon\/project<\/a>.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_volume_web<\/code> &#8211; ve\u013ekos\u0165 virtu\u00e1lneho disku v GB, \u010di\u017ee sa uistite, \u010di m\u00e1te dostatok vo\u013en\u00e9ho miesta z celkovo dostupn\u00e9ho na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/project\/\">cloud.websupport.sk\/horizon\/project<\/a>.<\/li>\n\n\n\n<li style=\"font-size:19px\"><code>vdc_volume_db<\/code> &#8211; ve\u013ekos\u0165 virtu\u00e1lneho disku v GB, \u010di\u017ee sa uistite, \u010di m\u00e1te dostatok vo\u013en\u00e9ho miesta z celkovo dostupn\u00e9ho na adrese <a href=\"https:\/\/cloud.websupport.sk\/horizon\/project\/\">cloud.websupport.sk\/horizon\/project<\/a>.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Vytv\u00e1rame in\u0161tancie<\/h2>\n\n\n\n<p>Ak ste sa uistili, \u017ee m\u00e1te dostatok virtu\u00e1lnych procesorov pre v\u0161etky zam\u00fd\u0161\u013ean\u00e9 virtu\u00e1lne stroje a tie\u017e dostatok pam\u00e4te RAM a \u00falo\u017en\u00e9ho priestoru, spustite v prie\u010dinku Git repozit\u00e1ra inicializa\u010dn\u00fd pr\u00edkaz n\u00e1stroja Terraform:<\/p>\n\n\n\n<p><code>cd ~\/websupport_openstack\/terraform<\/code><\/p>\n\n\n\n<p><code>terraform init<\/code><\/p>\n\n\n\n<p>Terraform inicializuje svoje prostredie a potrebn\u00e9 moduly (v na\u0161om pr\u00edpade modul pre poskytovate\u013ea Openstack). Teraz si nech\u00e1me zobrazi\u0165, ak\u00e9 zmeny vlastne chceme na WebSupport VDC vykona\u0165:<\/p>\n\n\n\n<p><code>terraform plan<\/code><\/p>\n\n\n\n<p>Okrem podrobn\u00e9ho pl\u00e1nu Terraform vyp\u00ed\u0161e aj zhr\u0148uj\u00face inform\u00e1cie o tom, \u010do sa nanovo vytvor\u00ed (add), \u010do sa zmen\u00ed (change) a \u010do sa vyma\u017ee (destroy). Ak sme s pl\u00e1nom spokojn\u00ed, m\u00f4\u017eeme ho necha\u0165 realizova\u0165:<\/p>\n\n\n\n<p><code>terrafrom apply<\/code><\/p>\n\n\n\n<p>Terraform sa e\u0161te naposledy op\u00fdta, \u010di naozaj chceme navrhnut\u00fd pl\u00e1n realizova\u0165. Nap\u00ed\u0161eme yes a o nieko\u013eko desiatok sek\u00fand by sme mali ma\u0165 vytvoren\u00e9 presne tak\u00e9 virtu\u00e1lne stroje, ak\u00e9 sme \u0161pecifikovali v premenn\u00fdch vy\u0161\u0161ie.<\/p>\n\n\n\n<p>V pr\u00edpade, \u017ee sa rozhodneme zrealizovan\u00fd pl\u00e1n zvr\u00e1ti\u0165 (zni\u010di\u0165), sta\u010d\u00ed zada\u0165 tento pr\u00edkaz a v\u0161etky virtu\u00e1lne stroje spolu s virtu\u00e1lnymi diskami sa vyma\u017e\u00fa:<\/p>\n\n\n\n<p><code>terraform destroy<\/code><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zhrnutie<\/h2>\n\n\n\n<p>V druhej \u010dasti (poslednej) sme uk\u00e1zali, ako r\u00fdchlo a jednoducho nap\u00ed\u0161eme pl\u00e1n, pod\u013ea ktor\u00e9ho n\u00e1stroj Terraform vytvor\u00ed virtu\u00e1lne stroje s po\u017eadovan\u00fdm opera\u010dn\u00fdm syst\u00e9mom. Tie\u017e sme definovali, ko\u013eko virtu\u00e1lnych procesorov a pam\u00e4te RAM virtu\u00e1lnym strojom bude pridelen\u00fdch. Rovnako sme nastavili ve\u013ekos\u0165 virtu\u00e1lnych diskov, ktor\u00e9 bud\u00fa k virtu\u00e1lnym strojom priraden\u00e9. Z\u00edskali sme tak efekt\u00edvny n\u00e1stroj, v\u010faka ktor\u00e9mu sa nasadzovanie virtu\u00e1lnych po\u010d\u00edta\u010dov st\u00e1va jednoduch\u00fdm a r\u00fdchlym procesom.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V prvej \u010dasti seri\u00e1lu o n\u00e1stroji Terraform v syst\u00e9me OpenStack sme oba produkty predstavili. Z\u00e1rove\u0148 sme uviedli d\u00f4vody, pre ktor\u00e9 je vhodn\u00e9 pou\u017ei\u0165 n\u00e1stroj Terraform. Rovnako sme uk\u00e1zali ako nain\u0161talova\u0165 Terraform a ako si zo syst\u00e9mu OpenStack stiahnu\u0165 inform\u00e1cie potrebn\u00e9 na pripojenie a pou\u017eitie n\u00e1stroja Terraform. V tejto \u010dasti vytvor\u00edme&#8230;<\/p>\n","protected":false},"author":3,"template":"","format":"standard","meta":{"footnotes":""},"ht-kb-category":[505,33],"ht-kb-tag":[336,453,339,261,381,508,198,192],"class_list":["post-24293","ht_kb","type-ht_kb","status-publish","format-standard","hentry","ht_kb_category-terraform","ht_kb_category-servery","ht_kb_tag-cli","ht_kb_tag-iac","ht_kb_tag-open-source","ht_kb_tag-openstack","ht_kb_tag-server","ht_kb_tag-terraform","ht_kb_tag-ubuntu","ht_kb_tag-vdc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Terraform v prostred\u00ed VDC - automatizujeme vytv\u00e1ranie in\u0161tanci\u00ed - 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\/terraform-v-prostredi-vdc-automatizujeme-vytvaranie-instancii\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Terraform v prostred\u00ed VDC - automatizujeme vytv\u00e1ranie in\u0161tanci\u00ed - Websupport centrum podpory\" \/>\n<meta property=\"og:description\" content=\"V prvej \u010dasti seri\u00e1lu o n\u00e1stroji Terraform v syst\u00e9me OpenStack sme oba produkty predstavili. Z\u00e1rove\u0148 sme uviedli d\u00f4vody, pre ktor\u00e9 je vhodn\u00e9 pou\u017ei\u0165 n\u00e1stroj Terraform. Rovnako sme uk\u00e1zali ako nain\u0161talova\u0165 Terraform a ako si zo syst\u00e9mu OpenStack stiahnu\u0165 inform\u00e1cie potrebn\u00e9 na pripojenie a pou\u017eitie n\u00e1stroja Terraform. 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