{"id":34942,"date":"2024-09-04T17:20:01","date_gmt":"2024-09-04T10:20:01","guid":{"rendered":"http:\/\/jupitek.maudemo.vip\/index.php\/2024\/09\/04\/high-availability-ha-control-plane-on-lke\/"},"modified":"2026-05-14T10:31:58","modified_gmt":"2026-05-14T09:31:58","slug":"high-availability-ha-control-plane-on-lke","status":"publish","type":"post","link":"https:\/\/jupitek.maudemo.vip\/index.php\/2024\/09\/04\/high-availability-ha-control-plane-on-lke\/","title":{"rendered":"High Availability (HA) control plane tr\u00ean LKE"},"content":{"rendered":"<p>Trong Kubernetes, m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n l\u00e0 t\u1eadp h\u1ee3p c\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec1u ph\u1ed1i c\u1ee5m v\u00e0 qu\u1ea3n l\u00fd c\u00e1c n\u00fat c\u00f4ng nh\u00e2n (Phi\u00ean b\u1ea3n t\u00ednh to\u00e1n) trong c\u1ee5m \u0111\u00f3 v\u00e0 c\u00e1c nh\u00f3m (v\u00f9ng ch\u1ee9a) trong c\u00e1c n\u00fat c\u00f4ng nh\u00e2n. C\u00e1c th\u00e0nh ph\u1ea7n m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n bao g\u1ed3m m\u00e1y ch\u1ee7 API Kubernetes (kube-). apiserver), etcd, b\u1ed9 l\u1eadp l\u1ecbch Kubernetes (b\u1ed9 l\u1eadp l\u1ecbch kube), tr\u00ecnh qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e1m m\u00e2y (tr\u00ecnh qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e1m m\u00e2y) v\u00e0 tr\u00ecnh qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n Kubernetes (tr\u00ecnh qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n kube).<\/p>\n<p>Trong N\u1ec1n t\u1ea3ng Linode, m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd ho\u00e0n to\u00e0n b\u1edfi LKE (Linode Kubernetes Engine). Theo m\u1eb7c \u0111\u1ecbnh, c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c sao ch\u00e9p. N\u1ebfu b\u1ea5t k\u1ef3 th\u00e0nh ph\u1ea7n n\u00e0o trong s\u1ed1 ch\u00fang b\u1ecb l\u1ed7i, c\u00f3 th\u1ec3 c\u00f3 v\u1ea5n \u0111\u1ec1 v\u1edbi c\u1ee5m c\u1ee7a b\u1ea1n. T\u00ednh kh\u1ea3 d\u1ee5ng) M\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n b\u1ed5 sung th\u00eam m\u1ed9t l\u1edbp d\u1ef1 ph\u00f2ng b\u1eb1ng c\u00e1ch sao ch\u00e9p c\u00e1c th\u00e0nh ph\u1ea7n m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n n\u00e0y, khi l\u00e0m nh\u01b0 v\u1eady, t\u00ednh n\u0103ng n\u00e0y c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u1ee5m c\u00f3 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng t\u1ed1i \u0111a (\u0111\u1ea3m b\u1ea3o 99,99%) v\u00e0 \u0111\u01b0\u1ee3c khuy\u1ebfn ngh\u1ecb cho t\u1ea5t c\u1ea3 c\u00e1c \u1ee9ng d\u1ee5ng s\u1ea3n xu\u1ea5t ch\u1ea1y tr\u00ean LKE.<\/p>\n<p><strong>Tr\u1ecb gi\u00e1<\/strong><\/p>\n<p>T\u00ednh n\u0103ng m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n HA l\u00e0 m\u1ed9t d\u1ecbch v\u1ee5 c\u00f3 t\u00ednh ph\u00ed t\u00f9y ch\u1ecdn c\u00f3 gi\u00e1 kh\u1edfi \u0111i\u1ec3m l\u00e0 60 USD\/th\u00e1ng cho m\u1ed7i c\u1ee5m, t\u00f9y thu\u1ed9c v\u00e0o khu v\u1ef1c. \u0110\u1ec3 bi\u1ebft th\u00eam th\u00f4ng tin, h\u00e3y xem trang gi\u00e1 c\u1ee7a ch\u00fang t\u00f4i.<\/p>\n<p class=\"has-background\" style=\"background-color:#fcf4d3\">M\u1eb7c d\u00f9 lu\u00f4n c\u00f3 th\u1ec3 n\u00e2ng c\u1ea5p l\u00ean c\u1ee5m HA nh\u01b0ng vi\u1ec7c h\u1ea1 c\u1ea5p c\u1ee5m c\u1ee7a b\u1ea1n hi\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. Vi\u1ec7c b\u1eadt HA l\u00e0 m\u1ed9t thay \u0111\u1ed5i kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi c\u1ee5m c\u1ee7a b\u1ea1n.<\/p>\n<p><strong>Chi ti\u1ebft sao ch\u00e9p<\/strong><\/p>\n<p>Khi m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n HA \u0111\u01b0\u1ee3c b\u1eadt tr\u00ean m\u1ed9t c\u1ee5m, c\u00e1c th\u00e0nh ph\u1ea7n m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n sau s\u1ebd \u0111\u01b0\u1ee3c sao ch\u00e9p:<\/p>\n<ul>\n<li>etcd v\u00e0 kube-apiserver t\u0103ng t\u1eeb m\u1ed9t l\u00ean ba b\u1ea3n sao.<\/li>\n<\/ul>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n kh\u00e1c, bao g\u1ed3m Tr\u00ecnh qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00e1m m\u00e2y, b\u1ed9 l\u1eadp l\u1ecbch kube v\u00e0 b\u1ed9 qu\u1ea3n l\u00fd b\u1ed9 \u0111i\u1ec1u khi\u1ec3n kube, t\u0103ng t\u1eeb m\u1ed9t l\u00ean hai b\u1ea3n sao, v\u1edbi vi\u1ec7c b\u1ea7u ch\u1ecdn ng\u01b0\u1eddi l\u00e3nh \u0111\u1ea1o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/li>\n<\/ul>\n<p>Khi nhi\u1ec1u b\u1ea3n sao \u0111\u01b0\u1ee3c t\u1ea1o, ch\u00fang lu\u00f4n \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng ri\u00eang bi\u1ec7t \u0111\u1ec3 h\u1ed7 tr\u1ee3 t\u1ed1t h\u01a1n v\u1ec1 th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng v\u00e0 d\u1ef1 ph\u00f2ng. C\u1ea5u h\u00ecnh n\u00e0y duy tr\u00ec th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o 99,99% cho m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c n\u00fat c\u00f4ng nh\u00e2n.<\/p>\n<p><strong>K\u00edch ho\u1ea1t trong qu\u00e1 tr\u00ecnh t\u1ea1o c\u1ee5m<\/strong><\/p>\n<p>\u0110\u1ec3 b\u1eadt t\u00ednh n\u0103ng n\u00e0y khi t\u1ea1o c\u1ee5m, h\u00e3y ch\u1ecdn h\u1ed9p B\u1eadt M\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n HA trong ph\u1ea7n T\u00f3m t\u1eaft c\u1ee5m. Xem l\u1ea1i h\u01b0\u1edbng d\u1eabn T\u1ea1o c\u1ee5m \u0111\u1ec3 bi\u1ebft h\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"102\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-1024x102-1.png\" alt=\"\" class=\"wp-image-1551\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-1024x102-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-300x30-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-768x77-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-1536x154-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-10-1.png 1660w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p><strong>K\u00edch ho\u1ea1t tr\u00ean c\u00e1c c\u1ee5m hi\u1ec7n c\u00f3<\/strong><\/p>\n<div class=\"is-layout-constrained wp-block-group has-background\" style=\"background-color:#f2e4bb\">\n<div class=\"wp-block-group__inner-container\">\n<p>N\u1ebfu m\u1ed9t c\u1ee5m \u0111\u01b0\u1ee3c t\u1ea1o m\u00e0 kh\u00f4ng c\u00f3 t\u00ednh n\u0103ng n\u00e0y th\u00ec b\u1ea1n c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t n\u00f3 b\u1ea5t k\u1ef3 l\u00fac n\u00e0o.<\/p>\n<ul>\n<li>Vi\u1ec7c b\u1eadt t\u00ednh n\u0103ng m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n cao c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng s\u1eb5n s\u00e0ng ng\u1eafn v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng t\u1ea1m th\u1eddi trong khi c\u1ee5m \u0111\u01b0\u1ee3c n\u00e2ng c\u1ea5p v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng sau:<\/li>\n<\/ul>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c n\u00fat s\u1ebd b\u1ecb x\u00f3a v\u00e0 c\u00e1c n\u00fat m\u1edbi s\u1ebd \u0111\u01b0\u1ee3c t\u1ea1o \u0111\u1ec3 thay th\u1ebf ch\u00fang.<\/li>\n<\/ul>\n<p>M\u1ecdi b\u1ed9 nh\u1edb c\u1ee5c b\u1ed9 (ch\u1eb3ng h\u1ea1n nh\u01b0 \u1ed5 \u0111\u0129a HostPath) s\u1ebd b\u1ecb x\u00f3a.<\/p>\n<p>Qu\u00e1 tr\u00ecnh n\u00e2ng c\u1ea5p c\u00f3 th\u1ec3 m\u1ea5t v\u00e0i ph\u00fat \u0111\u1ec3 ho\u00e0n th\u00e0nh v\u00ec c\u00e1c n\u00fat \u0111\u01b0\u1ee3c thay th\u1ebf lu\u00e2n phi\u00ean.<\/p>\n<\/div>\n<\/div>\n<p>T\u00ednh s\u1eb5n s\u00e0ng cao c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o c\u00e1c c\u1ee5m c\u00f3 s\u1eb5n v\u00e0o b\u1ea5t k\u1ef3 th\u1eddi \u0111i\u1ec3m n\u00e0o th\u00f4ng qua Trang T\u00f3m t\u1eaft c\u1ee7a c\u1ee5m.<\/p>\n<ul>\n<li>\u0110\u1ec3 truy c\u1eadp trang t\u00f3m t\u1eaft cho c\u1ee5m, tr\u01b0\u1edbc ti\u00ean h\u00e3y \u0111i\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn ph\u1ea7n Kubernetes c\u1ee7a Tr\u00ecnh qu\u1ea3n l\u00fd \u0111\u00e1m m\u00e2y.<\/li>\n<\/ul>\n<ul>\n<li>Ch\u1ecdn C\u1ee5m theo nh\u00e3n m\u00e0 b\u1ea1n mu\u1ed1n b\u1eadt HA. Trang t\u00f3m t\u1eaft cho c\u1ee5m s\u1ebd xu\u1ea5t hi\u1ec7n.<\/li>\n<\/ul>\n<ul>\n<li>\u0110\u1ec3 b\u1eadt HA, ch\u1ecdn n\u00fat N\u00e2ng c\u1ea5p l\u00ean HA \u1edf \u0111\u1ea7u trang.<\/li>\n<\/ul>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"606\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-1024x606-1.png\" alt=\"\" class=\"wp-image-1552\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-1024x606-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-300x177-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-768x454-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-1536x908-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-11-2048x1211-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<ul>\n<li>M\u1ed9t c\u1eeda s\u1ed5 m\u1edbi xu\u1ea5t hi\u1ec7n y\u00eau c\u1ea7u b\u1ea1n x\u00e1c nh\u1eadn t\u1ea5t c\u1ea3 c\u00e1c thay \u0111\u1ed5i \u0111i k\u00e8m v\u1edbi High Availability. \u0110\u1ecdc qua th\u00f4ng b\u00e1o v\u00e0 ch\u1ecdn h\u1ed9p ki\u1ec3m Enable HA Control Plane \u0111\u1ec3 x\u00e1c nh\u1eadn r\u1eb1ng b\u1ea1n \u0111\u1ed3ng \u00fd v\u1edbi nh\u1eefng thay \u0111\u1ed5i.<\/li>\n<\/ul>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"731\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-12-1024x731-1.png\" alt=\"\" class=\"wp-image-1553\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-12-1024x731-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-12-300x214-1.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-12-768x548-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-12.png 1182w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p>T\u1ea5t c\u1ea3 c\u00e1c c\u1ee5m \u0111\u00e3 b\u1eadt HA s\u1ebd c\u00f3 h\u00ecnh m\u1edd C\u1ee5m HA tr\u00ean trang t\u00f3m t\u1eaft c\u1ee7a ch\u00fang.<\/p>\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"510\" src=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-1024x510-1.png\" alt=\"\" class=\"wp-image-1554\" srcset=\"http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-1024x510-1.png 1024w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-300x149-2.png 300w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-768x382-1.png 768w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-1536x764-1.png 1536w, http:\/\/jupitek.maudemo.vip\/wp-content\/uploads\/2026\/05\/image-13-2048x1019-1.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/p>\n<p>Ngu\u1ed3n: https:\/\/techdocs.akamai.com\/cloud-computing\/docs\/high-availability-ha-control-plane-on-lke<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong Kubernetes, m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n l\u00e0 t\u1eadp h\u1ee3p c\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec1u ph\u1ed1i c\u1ee5m v\u00e0 qu\u1ea3n l\u00fd c\u00e1c n\u00fat c\u00f4ng nh\u00e2n (Phi\u00ean b\u1ea3n t\u00ednh to\u00e1n) trong c\u1ee5m \u0111\u00f3 v\u00e0 c\u00e1c nh\u00f3m (v\u00f9ng ch\u1ee9a) trong c\u00e1c n\u00fat c\u00f4ng nh\u00e2n. C\u00e1c th\u00e0nh ph\u1ea7n m\u1eb7t ph\u1eb3ng \u0111i\u1ec1u khi\u1ec3n bao g\u1ed3m m\u00e1y ch\u1ee7 API Kubernetes (kube-). apiserver), etcd,<\/p>\n","protected":false},"author":1,"featured_media":35872,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-34942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linode-kubernetes-engine"],"_links":{"self":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34942","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/comments?post=34942"}],"version-history":[{"count":1,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34942\/revisions"}],"predecessor-version":[{"id":35873,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/posts\/34942\/revisions\/35873"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media\/35872"}],"wp:attachment":[{"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/media?parent=34942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/categories?post=34942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jupitek.maudemo.vip\/index.php\/wp-json\/wp\/v2\/tags?post=34942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}