{"id":101493,"date":"2024-08-30T11:26:33","date_gmt":"2024-08-30T04:26:33","guid":{"rendered":"https:\/\/wiki.tino.org\/?p=101493"},"modified":"2025-06-16T16:19:06","modified_gmt":"2025-06-16T09:19:06","slug":"certbot-la-gi","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/certbot-la-gi\/","title":{"rendered":"Certbot l\u00e0 g\u00ec? T\u00ecm hi\u1ec3u t\u1ea7m quan tr\u1ecdng c\u1ee7a Certbot trong vi\u1ec7c c\u00e0i \u0111\u1eb7t SSL"},"content":{"rendered":"\n

Tr\u01b0\u1edbc \u0111\u00e2y, vi\u1ec7c c\u00e0i \u0111\u1eb7t v\u00e0 qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9 SSL<\/a> l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi ng\u01b0\u1eddi d\u00f9ng ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 k\u1ef9 thu\u1eadt. Tuy nhi\u00ean, v\u1edbi s\u1ef1 ra \u0111\u1eddi c\u1ee7a Certbot, m\u1ecdi th\u1ee9 \u0111\u00e3 tr\u1edf n\u00ean \u0111\u01a1n gi\u1ea3n h\u01a1n bao gi\u1edd h\u1ebft. Certbot nh\u01b0 m\u1ed9t “ph\u00f9 th\u1ee7y” gi\u00fap b\u1ea1n t\u1ef1 \u0111\u1ed9ng h\u00f3a to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh, ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c. Trong b\u00e0i vi\u1ebft h\u00f4m nay, TinoHost s\u1ebd c\u00f9ng b\u1ea1n t\u00ecm hi\u1ec3u c\u1ee5 th\u1ec3 Certbot l\u00e0 g\u00ec c\u0169ng nh\u01b0 t\u1ea7m quan tr\u1ecdng c\u1ee7a c\u00f4ng c\u1ee5 n\u00e0y trong vi\u1ec7c c\u00e0i \u0111\u1eb7t SSL.<\/strong><\/p>\n\n\n\n

<\/a>T\u1ed5ng quan v\u1ec1 Certbot<\/strong><\/h2>\n\n\n\n

<\/a>Certbot l\u00e0 g\u00ec?<\/strong><\/h3>\n\n\n\n

Certbot l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 m\u00e3 ngu\u1ed3n m\u1edf, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi Electronic Frontier Foundation (EFF)<\/a>, chuy\u00ean d\u00f9ng \u0111\u1ec3 t\u1ef1 \u0111\u1ed9ng h\u00f3a vi\u1ec7c c\u1ea5p ph\u00e1t v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 SSL\/TLS t\u1eeb Let’s Encrypt<\/a>. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng gi\u1ea3i ph\u00e1p \u0111\u01a1n gi\u1ea3n v\u00e0 hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ec3 b\u1ea3o m\u1eadt c\u00e1c trang web b\u1eb1ng c\u00e1ch tri\u1ec3n khai HTTPS.<\/p>\n\n\n

\n
\"certbot-la-gi\"
Certbot l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n

Certbot ra \u0111\u1eddi nh\u1eb1m m\u1ee5c \u0111\u00edch gi\u00fap m\u1ecdi ng\u01b0\u1eddi d\u1ec5 d\u00e0ng ti\u1ebfp c\u1eadn vi\u1ec7c s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL\/TLS m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c chuy\u00ean s\u00e2u v\u1ec1 b\u1ea3o m\u1eadt. Tr\u01b0\u1edbc khi c\u00f3 Certbot, vi\u1ec7c c\u00e0i \u0111\u1eb7t v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 SSL l\u00e0 m\u1ed9t quy tr\u00ecnh ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi nhi\u1ec1u b\u01b0\u1edbc th\u1ee7 c\u00f4ng. Certbot gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh n\u00e0y, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng t\u1ef1 \u0111\u1ed9ng h\u00f3a h\u1ea7u h\u1ebft c\u00e1c b\u01b0\u1edbc, t\u1eeb vi\u1ec7c c\u1ea5p ph\u00e1t ch\u1ee9ng ch\u1ec9 \u0111\u1ebfn gia h\u1ea1n v\u00e0 c\u1ea5u h\u00ecnh m\u00e1y ch\u1ee7 web.<\/p>\n\n\n\n

<\/a>C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Certbot <\/strong><\/h3>\n\n\n\n

<\/a>C\u1ea5p ph\u00e1t ch\u1ee9ng ch\u1ec9 SSL\/TLS mi\u1ec5n ph\u00ed<\/strong><\/h4>\n\n\n\n

Certbot cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 SSL\/TLS mi\u1ec5n ph\u00ed t\u1eeb Let’s Encrypt. Ch\u1ee9ng ch\u1ec9 n\u00e0y c\u00f3 th\u1eddi h\u1ea1n 90 ng\u00e0y, nh\u01b0ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng gia h\u1ea1n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ch\u00ednh Certbot. Vi\u1ec7c c\u1ea5p ph\u00e1t ch\u1ee9ng ch\u1ec9 SSL\/TLS gi\u00fap b\u1ea3o m\u1eadt d\u1eef li\u1ec7u trao \u0111\u1ed5i gi\u1eefa ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00e1y ch\u1ee7 web, t\u1ea1o ni\u1ec1m tin cho kh\u00e1ch h\u00e0ng v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt.<\/p>\n\n\n\n

<\/a>T\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00e0i \u0111\u1eb7t ch\u1ee9ng ch\u1ec9<\/strong><\/h4>\n\n\n\n

M\u1ed9t trong nh\u1eefng \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a Certbot l\u00e0 kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh ch\u1ee9ng ch\u1ec9 SSL\/TLS cho c\u00e1c m\u00e1y ch\u1ee7 web nh\u01b0 Apache<\/a> v\u00e0 Nginx. \u0110i\u1ec1u n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a quy tr\u00ecnh c\u00e0i \u0111\u1eb7t, gi\u1ea3m thi\u1ec3u r\u1ee7i ro do l\u1ed7i c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng, t\u1eeb \u0111\u00f3 gi\u00fap trang web nhanh ch\u00f3ng chuy\u1ec3n sang s\u1eed d\u1ee5ng HTTPS.<\/p>\n\n\n

\n
\"cac-tinh-nang-noi-bat-cua-certbot\"
C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Certbot <\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n

<\/a>Gia h\u1ea1n ch\u1ee9ng ch\u1ec9 t\u1ef1 \u0111\u1ed9ng<\/strong><\/h4>\n\n\n\n

M\u1eb7c d\u00f9 ch\u1ee9ng ch\u1ec9 SSL\/TLS t\u1eeb Let’s Encrypt c\u00f3 th\u1eddi h\u1ea1n ng\u1eafn (90 ng\u00e0y) nh\u01b0ng Certbot cung c\u1ea5p kh\u1ea3 n\u0103ng gia h\u1ea1n t\u1ef1 \u0111\u1ed9ng. C\u00f4ng c\u1ee5 n\u00e0y s\u1ebd ki\u1ec3m tra v\u00e0 gia h\u1ea1n ch\u1ee9ng ch\u1ec9 tr\u01b0\u1edbc khi h\u1ebft h\u1ea1n, \u0111\u1ea3m b\u1ea3o r\u1eb1ng trang web c\u1ee7a b\u1ea1n lu\u00f4n duy tr\u00ec k\u1ebft n\u1ed1i an to\u00e0n m\u00e0 kh\u00f4ng c\u1ea7n ph\u1ea3i can thi\u1ec7p th\u1ee7 c\u00f4ng.<\/p>\n\n\n\n

<\/a>H\u1ed7 tr\u1ee3 x\u00e1c th\u1ef1c linh ho\u1ea1t<\/strong><\/h4>\n\n\n\n

Certbot h\u1ed7 tr\u1ee3 nhi\u1ec1u ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c kh\u00e1c nhau, bao g\u1ed3m HTTP-01 (x\u00e1c th\u1ef1c qua HTTP) v\u00e0 DNS-01 (x\u00e1c th\u1ef1c qua DNS). Ph\u01b0\u01a1ng th\u1ee9c HTTP-01 y\u00eau c\u1ea7u ng\u01b0\u1eddi d\u00f9ng \u0111\u1eb7t m\u1ed9t t\u1ec7p x\u00e1c th\u1ef1c \u0111\u1eb7c bi\u1ec7t tr\u00ean m\u00e1y ch\u1ee7 web, trong khi DNS-01 y\u00eau c\u1ea7u th\u00eam m\u1ed9t b\u1ea3n ghi DNS v\u00e0o t\u00ean mi\u1ec1n. \u0110i\u1ec1u n\u00e0y cung c\u1ea5p s\u1ef1 linh ho\u1ea1t trong vi\u1ec7c ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c x\u00e1c th\u1ef1c ph\u00f9 h\u1ee3p v\u1edbi m\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

<\/a>T\u00edch h\u1ee3p t\u1ed1t v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 web ph\u1ed5 bi\u1ebfn<\/strong><\/h4>\n\n\n\n

Certbot \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u00edch h\u1ee3p d\u1ec5 d\u00e0ng v\u1edbi c\u00e1c m\u00e1y ch\u1ee7 web ph\u1ed5 bi\u1ebfn nh\u01b0 Apache, Nginx v\u00e0 nhi\u1ec1u m\u00e1y ch\u1ee7 kh\u00e1c. C\u00f4ng c\u1ee5 n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh c\u1ee7a m\u00e1y ch\u1ee7 web \u0111\u1ec3 s\u1eed d\u1ee5ng ch\u1ee9ng ch\u1ec9 SSL\/TLS, gi\u00fap ti\u1ebft ki\u1ec7m th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c cho qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

<\/a>H\u1ed7 tr\u1ee3 nhi\u1ec1u n\u1ec1n t\u1ea3ng<\/strong><\/h4>\n\n\n\n

Certbot ho\u1ea1t \u0111\u1ed9ng tr\u00ean nhi\u1ec1u h\u1ec7 \u0111i\u1ec1u h\u00e0nh nh\u01b0 Linux, macOS v\u00e0 Windows. \u0110i\u1ec1u n\u00e0y gi\u00fap qu\u1ea3n tr\u1ecb vi\u00ean d\u1ec5 d\u00e0ng tri\u1ec3n khai v\u00e0 s\u1eed d\u1ee5ng Certbot tr\u00ean h\u1ea7u h\u1ebft c\u00e1c h\u1ea1 t\u1ea7ng m\u00e1y ch\u1ee7 hi\u1ec7n nay.<\/p>\n\n\n\n

<\/a>Giao di\u1ec7n d\u00f2ng l\u1ec7nh m\u1ea1nh m\u1ebd<\/strong><\/h4>\n\n\n\n

Certbot \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n th\u00f4ng qua giao di\u1ec7n d\u00f2ng l\u1ec7nh (CLI), mang l\u1ea1i s\u1ef1 linh ho\u1ea1t v\u00e0 kh\u1ea3 n\u0103ng t\u00f9y ch\u1ec9nh cao cho ng\u01b0\u1eddi d\u00f9ng. Giao di\u1ec7n d\u00f2ng l\u1ec7nh cho ph\u00e9p th\u1ef1c hi\u1ec7n c\u00e1c t\u00e1c v\u1ee5 ph\u1ee9c t\u1ea1p, nh\u01b0 y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 cho nhi\u1ec1u t\u00ean mi\u1ec1n c\u00f9ng l\u00fac, c\u1ea5u h\u00ecnh n\u00e2ng cao, v\u00e0 t\u00edch h\u1ee3p v\u00e0o c\u00e1c quy tr\u00ecnh t\u1ef1 \u0111\u1ed9ng h\u00f3a kh\u00e1c.<\/p>\n\n\n\n

<\/a>H\u1ed7 tr\u1ee3 nhi\u1ec1u ng\u00f4n ng\u1eef v\u00e0 b\u1ea3n \u0111\u1ecba h\u00f3a<\/strong><\/h4>\n\n\n\n

Certbot h\u1ed7 tr\u1ee3 nhi\u1ec1u ng\u00f4n ng\u1eef kh\u00e1c nhau, cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng \u1edf nhi\u1ec1u qu\u1ed1c gia c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 n\u00e0y m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. Vi\u1ec7c b\u1ea3n \u0111\u1ecba h\u00f3a gi\u00fap Certbot ti\u1ebfp c\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u \u0111\u1ed1i t\u01b0\u1ee3ng ng\u01b0\u1eddi d\u00f9ng h\u01a1n v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u c\u1ee7a t\u1eebng khu v\u1ef1c.<\/p>\n\n\n\n

<\/a>Certbot ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/h3>\n\n\n\n

Certbot ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e1y ch\u1ee7 Let’s Encrypt \u0111\u1ec3 c\u1ea5p ph\u00e1t v\u00e0 qu\u1ea3n l\u00fd ch\u1ee9ng ch\u1ec9 SSL\/TLS cho c\u00e1c trang web. Qu\u00e1 tr\u00ecnh n\u00e0y bao g\u1ed3m nhi\u1ec1u b\u01b0\u1edbc \u0111\u01b0\u1ee3c t\u1ef1 \u0111\u1ed9ng h\u00f3a, gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng tri\u1ec3n khai HTTPS m\u00e0 kh\u00f4ng c\u1ea7n can thi\u1ec7p th\u1ee7 c\u00f4ng ph\u1ee9c t\u1ea1p.<\/p>\n\n\n

\n
\"certbot-hoat-dong-nhu-the-nao\"
Certbot ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n

Tr\u01b0\u1edbc ti\u00ean, khi b\u1ea1n y\u00eau c\u1ea7u ch\u1ee9ng ch\u1ec9 SSL\/TLS cho t\u00ean mi\u1ec1n c\u1ee7a m\u00ecnh, Certbot s\u1ebd g\u1eedi y\u00eau c\u1ea7u t\u1edbi Let’s Encrypt. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u1ea1n l\u00e0 ch\u1ee7 s\u1edf h\u1eefu h\u1ee3p ph\u00e1p c\u1ee7a t\u00ean mi\u1ec1n \u0111\u00f3, Let’s Encrypt s\u1ebd y\u00eau c\u1ea7u b\u1ea1n x\u00e1c th\u1ef1c quy\u1ec1n s\u1edf h\u1eefu t\u00ean mi\u1ec1n th\u00f4ng qua m\u1ed9t trong hai ph\u01b0\u01a1ng th\u1ee9c: HTTP-01 ho\u1eb7c DNS-01.<\/p>\n\n\n\n