{"id":4489,"date":"2026-06-16T00:00:40","date_gmt":"2026-06-15T17:00:40","guid":{"rendered":"https:\/\/technest.com.vn\/?p=4489"},"modified":"2026-05-29T16:03:16","modified_gmt":"2026-05-29T09:03:16","slug":"nagios","status":"publish","type":"post","link":"https:\/\/technest.com.vn\/vi\/nagios\/","title":{"rendered":"Nagios l\u00e0 g\u00ec? Gi\u1ea3i ph\u00e1p gi\u00e1m s\u00e1t h\u1ec7 th\u1ed1ng to\u00e0n di\u1ec7n"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Trong th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7 th\u00f4ng tin hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c l\u00e0 y\u00eau c\u1ea7u s\u1ed1ng c\u00f2n c\u1ee7a m\u1ecdi doanh nghi\u1ec7p. Ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ef1 c\u1ed1 nh\u1ecf x\u1ea3y ra m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n k\u1ecbp th\u1eddi, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0 h\u00e0ng gi\u1edd gi\u00e1n \u0111o\u1ea1n d\u1ecbch v\u1ee5, th\u1ea5t tho\u00e1t doanh thu v\u00e0 m\u1ea5t l\u00f2ng tin c\u1ee7a kh\u00e1ch h\u00e0ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t h\u1ec7 th\u1ed1ng ng\u00e0y c\u00e0ng tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 thi\u1ebfu &#8211; v\u00e0 <\/span><a title=\"Nagios\" href=\"https:\/\/technest.com.vn\/vi\/nagios\/\"><b>Nagios<\/b><\/a><span style=\"font-weight: 400;\"> ch\u00ednh l\u00e0 m\u1ed9t trong nh\u1eefng gi\u1ea3i ph\u00e1p n\u1ed5i ti\u1ebfng nh\u1ea5t trong l\u0129nh v\u1ef1c n\u00e0y.<\/span><\/p>\n<h2><b>Nagios l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Nagios l\u00e0 m\u1ed9t n\u1ec1n t\u1ea3ng gi\u00e1m s\u00e1t h\u1ec7 th\u1ed1ng v\u00e0 m\u1ea1ng m\u00e3 ngu\u1ed3n m\u1edf, \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n l\u1ea7n \u0111\u1ea7u v\u00e0o n\u0103m 1999 b\u1edfi Ethan Galstad d\u01b0\u1edbi t\u00ean g\u1ecdi NetSaint. \u0110\u1ebfn n\u0103m 2002, ph\u1ea7n m\u1ec1m \u0111\u01b0\u1ee3c \u0111\u1ed5i t\u00ean th\u00e0nh Nagios &#8211; vi\u1ebft t\u1eaft c\u1ee7a &#8220;Nagios Ain&#8217;t Gonna Insist On Sainthood&#8221; &#8211; v\u00e0 nhanh ch\u00f3ng tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n v\u00e0ng trong ng\u00e0nh gi\u00e1m s\u00e1t h\u1ea1 t\u1ea7ng CNTT.<\/span><\/p>\n<figure id=\"attachment_4490\" aria-describedby=\"caption-attachment-4490\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4490 size-full\" title=\"Nagios l\u00e0 g\u00ec?\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-1.jpg\" alt=\"Nagios l\u00e0 g\u00ec?\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-1.jpg 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-1-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-4490\" class=\"wp-caption-text\">Nagios l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<p><span style=\"font-weight: 400;\">V\u1ec1 b\u1ea3n ch\u1ea5t, Nagios l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o v\u00e0 theo d\u00f5i cho ph\u00e9p c\u00e1c qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng (system administrator) theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a m\u00e1y ch\u1ee7, d\u1ecbch v\u1ee5, \u1ee9ng d\u1ee5ng v\u00e0 to\u00e0n b\u1ed9 c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng m\u1ea1ng theo th\u1eddi gian th\u1ef1c. Khi c\u00f3 s\u1ef1 c\u1ed1 x\u1ea3y ra &#8211; ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1y ch\u1ee7 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng, b\u0103ng th\u00f4ng m\u1ea1ng b\u1ecb qu\u00e1 t\u1ea3i, ho\u1eb7c d\u1ecbch v\u1ee5 kh\u00f4ng ph\u1ea3n h\u1ed3i &#8211; Nagios s\u1ebd ngay l\u1eadp t\u1ee9c g\u1eedi c\u1ea3nh b\u00e1o \u0111\u1ebfn \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt qua email, SMS ho\u1eb7c c\u00e1c k\u00eanh th\u00f4ng b\u00e1o kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nagios t\u1ed3n t\u1ea1i d\u01b0\u1edbi hai phi\u00ean b\u1ea3n ch\u00ednh. Phi\u00ean b\u1ea3n <\/span><b>Nagios Core<\/b><span style=\"font-weight: 400;\"> l\u00e0 ph\u1ea7n m\u1ec1m m\u00e3 ngu\u1ed3n m\u1edf ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed, cung c\u1ea5p c\u00e1c t\u00ednh n\u0103ng gi\u00e1m s\u00e1t c\u1ed1t l\u00f5i v\u00e0 \u0111\u01b0\u1ee3c c\u1ed9ng \u0111\u1ed3ng to\u00e0n c\u1ea7u \u0111\u00f3ng g\u00f3p plugin li\u00ean t\u1ee5c. Phi\u00ean b\u1ea3n <\/span><b>Nagios XI<\/b><span style=\"font-weight: 400;\"> l\u00e0 b\u1ea3n th\u01b0\u01a1ng m\u1ea1i v\u1edbi giao di\u1ec7n \u0111\u1ed3 h\u1ecda n\u00e2ng cao, h\u1ed7 tr\u1ee3 doanh nghi\u1ec7p v\u00e0 nhi\u1ec1u t\u00ednh n\u0103ng c\u1ea5u h\u00ecnh ti\u1ec7n l\u1ee3i h\u01a1n. D\u00f9 \u1edf phi\u00ean b\u1ea3n n\u00e0o, Nagios v\u1eabn gi\u1eef v\u1eefng danh ti\u1ebfng l\u00e0 c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t \u0111\u00e1ng tin c\u1eady, linh ho\u1ea1t v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng cao.<\/span><\/p>\n<h2><b>\u01afu v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ee7a Nagios<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Tr\u01b0\u1edbc khi quy\u1ebft \u0111\u1ecbnh tri\u1ec3n khai b\u1ea5t k\u1ef3 c\u00f4ng c\u1ee5 n\u00e0o v\u00e0o h\u1ec7 th\u1ed1ng, vi\u1ec7c c\u00e2n nh\u1eafc k\u1ef9 l\u01b0\u1ee1ng c\u00e1c \u0111i\u1ec3m m\u1ea1nh v\u00e0 \u0111i\u1ec3m y\u1ebfu l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft. Nagios c\u0169ng kh\u00f4ng ngo\u1ea1i l\u1ec7 &#8211; c\u00f4ng c\u1ee5 n\u00e0y s\u1edf h\u1eefu nhi\u1ec1u l\u1ee3i th\u1ebf v\u01b0\u1ee3t tr\u1ed9i nh\u01b0ng \u0111\u1ed3ng th\u1eddi c\u0169ng \u0111i k\u00e8m m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf m\u00e0 c\u00e1c \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ea7n n\u1eafm r\u00f5.<\/span><\/p>\n<h3><b>\u01afu \u0111i\u1ec3m n\u1ed5i b\u1eadt c\u1ee7a Nagios<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u00e3 ngu\u1ed3n m\u1edf v\u00e0 mi\u1ec5n ph\u00ed:<\/b><span style=\"font-weight: 400;\"> Nagios Core ho\u00e0n to\u00e0n kh\u00f4ng t\u1ed1n ph\u00ed b\u1ea3n quy\u1ec1n, ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 ng\u00e2n s\u00e1ch h\u1ea1n ch\u1ebf.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ed9ng \u0111\u1ed3ng plugin phong ph\u00fa:<\/b><span style=\"font-weight: 400;\"> V\u1edbi h\u01a1n 5.000 plugin do c\u1ed9ng \u0111\u1ed3ng ph\u00e1t tri\u1ec3n, Nagios c\u00f3 th\u1ec3 gi\u00e1m s\u00e1t g\u1ea7n nh\u01b0 m\u1ecdi lo\u1ea1i thi\u1ebft b\u1ecb, d\u1ecbch v\u1ee5 v\u00e0 \u1ee9ng d\u1ee5ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u1ed9 tin c\u1eady cao:<\/b><span style=\"font-weight: 400;\"> Nagios \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng qua h\u00e0ng th\u1eadp k\u1ef7 s\u1eed d\u1ee5ng trong m\u00f4i tr\u01b0\u1eddng doanh nghi\u1ec7p th\u1ef1c t\u1ebf tr\u00ean to\u00e0n th\u1ebf gi\u1edbi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Linh ho\u1ea1t v\u00e0 c\u00f3 kh\u1ea3 n\u0103ng m\u1edf r\u1ed9ng:<\/b><span style=\"font-weight: 400;\"> H\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng \u0111\u1ec3 gi\u00e1m s\u00e1t t\u1eeb v\u00e0i ch\u1ee5c \u0111\u1ebfn h\u00e0ng ngh\u00ecn m\u00e1y ch\u1ee7 t\u00f9y nhu c\u1ea7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>H\u1ec7 th\u1ed1ng c\u1ea3nh b\u00e1o \u0111a k\u00eanh:<\/b><span style=\"font-weight: 400;\"> H\u1ed7 tr\u1ee3 th\u00f4ng b\u00e1o qua email, SMS, Slack, <strong><a title=\"PagerDuty\" href=\"https:\/\/en.wikipedia.org\/wiki\/PagerDuty\" target=\"_blank\" rel=\"nofollow noopener\">PagerDuty<\/a><\/strong> v\u00e0 nhi\u1ec1u n\u1ec1n t\u1ea3ng kh\u00e1c.<\/span><\/li>\n<\/ul>\n<h3><b>Nh\u01b0\u1ee3c \u0111i\u1ec3m c\u1ea7n l\u01b0u \u00fd<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea5u h\u00ecnh ph\u1ee9c t\u1ea1p:<\/b><span style=\"font-weight: 400;\"> Nagios Core y\u00eau c\u1ea7u c\u1ea5u h\u00ecnh th\u1ee7 c\u00f4ng qua t\u1ec7p v\u0103n b\u1ea3n, \u0111\u00f2i h\u1ecfi k\u1ef9 n\u0103ng k\u1ef9 thu\u1eadt cao v\u00e0 t\u1ed1n nhi\u1ec1u th\u1eddi gian thi\u1ebft l\u1eadp ban \u0111\u1ea7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng l\u1ed7i th\u1eddi:<\/b><span style=\"font-weight: 400;\"> Giao di\u1ec7n web m\u1eb7c \u0111\u1ecbnh c\u1ee7a Nagios Core kh\u00e1 c\u01a1 b\u1ea3n v\u00e0 thi\u1ebfu tr\u1ef1c quan so v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 hi\u1ec7n \u0111\u1ea1i nh\u01b0 Grafana hay Zabbix.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kh\u00f4ng c\u00f3 h\u1ed7 tr\u1ee3 gi\u00e1m s\u00e1t ph\u00e2n t\u00e1n t\u00edch h\u1ee3p s\u1eb5n:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ec3 gi\u00e1m s\u00e1t nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c nhau, ng\u01b0\u1eddi d\u00f9ng c\u1ea7n c\u1ea5u h\u00ecnh th\u00eam c\u00e1c gi\u1ea3i ph\u00e1p b\u1ed5 sung.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Chi ph\u00ed duy tr\u00ec:<\/b><span style=\"font-weight: 400;\"> D\u00f9 b\u1ea3n core mi\u1ec5n ph\u00ed, nh\u01b0ng chi ph\u00ed nh\u00e2n l\u1ef1c \u0111\u1ec3 v\u1eadn h\u00e0nh, b\u1ea3o tr\u00ec v\u00e0 c\u1eadp nh\u1eadt h\u1ec7 th\u1ed1ng Nagios c\u00f3 th\u1ec3 \u0111\u00e1ng k\u1ec3.<\/span><\/li>\n<\/ul>\n<h2><b>Nagios ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">C\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Nagios \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf theo m\u00f4 h\u00ecnh ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3, trong \u0111\u00f3 h\u1ec7 th\u1ed1ng li\u00ean t\u1ee5c th\u0103m d\u00f2 tr\u1ea1ng th\u00e1i c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t v\u00e0 k\u00edch ho\u1ea1t c\u1ea3nh b\u00e1o khi ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n, ta c\u00f3 th\u1ec3 ph\u00e2n t\u00edch quy tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Nagios theo ba giai \u0111o\u1ea1n ch\u00ednh sau.<\/span><\/p>\n<figure id=\"attachment_4491\" aria-describedby=\"caption-attachment-4491\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4491 size-full\" title=\"Nagios ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o?\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-2.jpg\" alt=\"Nagios ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o?\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-2.jpg 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-2-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-4491\" class=\"wp-caption-text\">Nagios ho\u1ea1t \u0111\u1ed9ng th\u1ebf n\u00e0o?<\/figcaption><\/figure>\n<h3><b>Thu th\u1eadp th\u00f4ng tin<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Qu\u00e1 tr\u00ecnh b\u1eaft \u0111\u1ea7u b\u1eb1ng vi\u1ec7c Nagios thu th\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng trong h\u1ec7 th\u1ed1ng. Nagios s\u1eed d\u1ee5ng hai ph\u01b0\u01a1ng th\u1ee9c ch\u00ednh \u0111\u1ec3 th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y. Ph\u01b0\u01a1ng th\u1ee9c th\u1ee9 nh\u1ea5t l\u00e0 <\/span><b>ki\u1ec3m tra ch\u1ee7 \u0111\u1ed9ng (Active Check)<\/b><span style=\"font-weight: 400;\">, trong \u0111\u00f3 m\u00e1y ch\u1ee7 Nagios ch\u1ee7 \u0111\u1ed9ng k\u1ebft n\u1ed1i t\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t theo l\u1ecbch \u0111\u00e3 \u0111\u1ecbnh s\u1eb5n \u0111\u1ec3 l\u1ea5y d\u1eef li\u1ec7u.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ph\u01b0\u01a1ng th\u1ee9c th\u1ee9 hai l\u00e0 <\/span><b>ki\u1ec3m tra b\u1ecb \u0111\u1ed9ng (Passive Check)<\/b><span style=\"font-weight: 400;\">, c\u00e1c agent c\u00e0i \u0111\u1eb7t tr\u00ean m\u00e1y ch\u1ee7 t\u1eeb xa &#8211; th\u01b0\u1eddng l\u00e0 NRPE (Nagios Remote Plugin Executor) &#8211; s\u1ebd t\u1ef1 thu th\u1eadp th\u00f4ng tin c\u1ee5c b\u1ed9 r\u1ed3i g\u1eedi v\u1ec1 m\u00e1y ch\u1ee7 Nagios trung t\u00e2m. D\u1eef li\u1ec7u thu th\u1eadp bao g\u1ed3m t\u00ecnh tr\u1ea1ng CPU, b\u1ed9 nh\u1edb RAM, dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a, tr\u1ea1ng th\u00e1i d\u1ecbch v\u1ee5, \u0111\u1ed9 tr\u1ec5 m\u1ea1ng v\u00e0 nhi\u1ec1u ch\u1ec9 s\u1ed1 h\u1ec7 th\u1ed1ng quan tr\u1ecdng kh\u00e1c.<\/span><\/p>\n<h3><b>Chuy\u1ec3n th\u00f4ng tin<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Sau khi d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c thu th\u1eadp, b\u01b0\u1edbc ti\u1ebfp theo l\u00e0 chuy\u1ec3n th\u00f4ng tin v\u1ec1 m\u00e1y ch\u1ee7 Nagios trung t\u00e2m \u0111\u1ec3 x\u1eed l\u00fd. \u0110\u1ed1i v\u1edbi ki\u1ec3m tra ch\u1ee7 \u0111\u1ed9ng, d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u1ea3 v\u1ec1 ngay sau m\u1ed7i l\u1ea7n Nagios g\u1eedi y\u00eau c\u1ea7u ki\u1ec3m tra.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi ki\u1ec3m tra b\u1ecb \u0111\u1ed9ng th\u00f4ng qua NSCA (Nagios Service Check Acceptor), c\u00e1c agent s\u1ebd \u0111\u1ea9y k\u1ebft qu\u1ea3 ki\u1ec3m tra v\u1ec1 m\u00e1y ch\u1ee7 trung t\u00e2m m\u1ed9t c\u00e1ch ch\u1ee7 \u0111\u1ed9ng. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh n\u00e0y di\u1ec5n ra theo chu k\u1ef3 \u0111\u01b0\u1ee3c l\u1eadp tr\u00ecnh s\u1eb5n &#8211; th\u00f4ng th\u01b0\u1eddng t\u1eeb 1 \u0111\u1ebfn 5 ph\u00fat m\u1ed9t l\u1ea7n &#8211; nh\u1eb1m \u0111\u1ea3m b\u1ea3o d\u1eef li\u1ec7u lu\u00f4n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt li\u00ean t\u1ee5c v\u00e0 k\u1ecbp th\u1eddi.<\/span><\/p>\n<h3><b>Truy\u1ec1n k\u1ebft qu\u1ea3<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Giai \u0111o\u1ea1n cu\u1ed1i c\u00f9ng l\u00e0 Nagios x\u1eed l\u00fd v\u00e0 truy\u1ec1n k\u1ebft qu\u1ea3 t\u1edbi ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb. Sau khi nh\u1eadn \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u, Nagios ph\u00e2n t\u00edch v\u00e0 so s\u00e1nh v\u1edbi c\u00e1c ng\u01b0\u1ee1ng (threshold) \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh tr\u01b0\u1edbc. N\u1ebfu gi\u00e1 tr\u1ecb v\u01b0\u1ee3t ng\u01b0\u1ee1ng c\u1ea3nh b\u00e1o (Warning) ho\u1eb7c ng\u01b0\u1ee1ng nguy hi\u1ec3m (Critical), Nagios s\u1ebd ngay l\u1eadp t\u1ee9c k\u00edch ho\u1ea1t c\u01a1 ch\u1ebf th\u00f4ng b\u00e1o.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">K\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c truy\u1ec1n \u0111\u1ebfn ng\u01b0\u1eddi d\u00f9ng th\u00f4ng qua nhi\u1ec1u k\u00eanh nh\u01b0 email, tin nh\u1eafn SMS, th\u00f4ng b\u00e1o \u0111\u1ea9y ho\u1eb7c t\u00edch h\u1ee3p v\u1edbi c\u00e1c n\u1ec1n t\u1ea3ng qu\u1ea3n l\u00fd s\u1ef1 c\u1ed1 nh\u01b0 PagerDuty. \u0110\u1ed3ng th\u1eddi, to\u00e0n b\u1ed9 l\u1ecbch s\u1eed c\u1ea3nh b\u00e1o v\u00e0 tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u1ec3 ph\u1ee5c v\u1ee5 cho vi\u1ec7c b\u00e1o c\u00e1o v\u00e0 ph\u00e2n t\u00edch sau n\u00e0y.<\/span><\/p>\n<h2><b>Ki\u1ebfn tr\u00fac c\u1ee7a Nagios<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Ki\u1ebfn tr\u00fac c\u1ee7a Nagios \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng theo m\u00f4 h\u00ecnh client-server r\u00f5 r\u00e0ng, cho ph\u00e9p tri\u1ec3n khai linh ho\u1ea1t tr\u00ean nhi\u1ec1u quy m\u00f4 h\u1ec7 th\u1ed1ng kh\u00e1c nhau.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u00e1y ch\u1ee7 Nagios (Nagios Server)<\/b><span style=\"font-weight: 400;\"> l\u00e0 th\u00e0nh ph\u1ea7n trung t\u00e2m, ch\u1ecbu tr\u00e1ch nhi\u1ec7m l\u00ean l\u1ecbch ki\u1ec3m tra, x\u1eed l\u00fd k\u1ebft qu\u1ea3, qu\u1ea3n l\u00fd c\u1ea3nh b\u00e1o v\u00e0 cung c\u1ea5p giao di\u1ec7n web cho ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb. M\u00e1y ch\u1ee7 n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean h\u1ec7 \u0111i\u1ec1u h\u00e0nh Linux v\u00e0 ch\u1ea1y d\u1ecbch v\u1ee5 Nagios daemon li\u00ean t\u1ee5c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Plugin<\/b><span style=\"font-weight: 400;\"> l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng th\u1ee9 hai trong ki\u1ebfn tr\u00fac Nagios. M\u1ed7i plugin l\u00e0 m\u1ed9t t\u1eadp l\u1ec7nh ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh nh\u1ecf th\u1ef1c hi\u1ec7n m\u1ed9t nhi\u1ec7m v\u1ee5 ki\u1ec3m tra c\u1ee5 th\u1ec3 &#8211; v\u00ed d\u1ee5 nh\u01b0 ki\u1ec3m tra ping, ki\u1ec3m tra HTTP, ki\u1ec3m tra dung l\u01b0\u1ee3ng \u1ed5 \u0111\u0129a. Nagios kh\u00f4ng t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c ki\u1ec3m tra m\u00e0 \u1ee7y quy\u1ec1n ho\u00e0n to\u00e0n cho plugin, \u0111i\u1ec1u n\u00e0y t\u1ea1o ra t\u00ednh linh ho\u1ea1t c\u1ef1c cao v\u00ec ng\u01b0\u1eddi d\u00f9ng c\u00f3 th\u1ec3 t\u1ef1 vi\u1ebft plugin theo nhu c\u1ea7u ri\u00eang.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NRPE (Nagios Remote Plugin Executor)<\/b><span style=\"font-weight: 400;\"> l\u00e0 agent \u0111\u01b0\u1ee3c c\u00e0i \u0111\u1eb7t tr\u00ean c\u00e1c m\u00e1y ch\u1ee7 t\u1eeb xa, cho ph\u00e9p Nagios Server th\u1ef1c thi plugin ngay tr\u00ean m\u00e1y \u0111\u00f3 v\u00e0 l\u1ea5y k\u1ebft qu\u1ea3 v\u1ec1. \u0110\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p l\u00fd t\u01b0\u1edfng \u0111\u1ec3 gi\u00e1m s\u00e1t c\u00e1c th\u00f4ng s\u1ed1 n\u1ed9i b\u1ed9 m\u00e0 kh\u00f4ng th\u1ec3 ti\u1ebfp c\u1eadn t\u1eeb xa qua giao th\u1ee9c m\u1ea1ng th\u00f4ng th\u01b0\u1eddng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NSCA (Nagios Service Check Acceptor)<\/b><span style=\"font-weight: 400;\"> h\u1ed7 tr\u1ee3 m\u00f4 h\u00ecnh ki\u1ec3m tra b\u1ecb \u0111\u1ed9ng, cho ph\u00e9p c\u00e1c h\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i ch\u1ee7 \u0111\u1ed9ng g\u1eedi k\u1ebft qu\u1ea3 ki\u1ec3m tra v\u00e0o Nagios Server thay v\u00ec ch\u1edd m\u00e1y ch\u1ee7 \u0111\u1ebfn l\u1ea5y.<\/span><\/li>\n<\/ul>\n<h2><b>C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Nagios<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Nagios kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 gi\u00e1m s\u00e1t \u0111\u01a1n thu\u1ea7n &#8211; n\u00f3 l\u00e0 m\u1ed9t h\u1ec7 sinh th\u00e1i ho\u00e0n ch\u1ec9nh v\u1edbi nhi\u1ec1u t\u00ednh n\u0103ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u00e1p \u1ee9ng nhu c\u1ea7u c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c \u1edf m\u1ecdi quy m\u00f4. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng t\u00ednh n\u0103ng n\u1ed5i b\u1eadt nh\u1ea5t \u0111\u00e3 gi\u00fap Nagios gi\u1eef v\u1eefng v\u1ecb th\u1ebf d\u1eabn \u0111\u1ea7u trong su\u1ed1t h\u01a1n hai th\u1eadp k\u1ef7.<\/span><\/p>\n<figure id=\"attachment_4492\" aria-describedby=\"caption-attachment-4492\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4492 size-full\" title=\"C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Nagios\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-3.jpg\" alt=\"C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Nagios\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-3.jpg 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagios-3-300x200.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-4492\" class=\"wp-caption-text\">C\u00e1c t\u00ednh n\u0103ng n\u1ed5i b\u1eadt c\u1ee7a Nagios<\/figcaption><\/figure>\n<h3><b>C\u1ed9ng \u0111\u1ed3ng m\u00e3 ngu\u1ed3n m\u1edf h\u1ed7 tr\u1ee3<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t trong nh\u1eefng s\u1ee9c m\u1ea1nh l\u1edbn nh\u1ea5t c\u1ee7a Nagios ch\u00ednh l\u00e0 c\u1ed9ng \u0111\u1ed3ng ng\u01b0\u1eddi d\u00f9ng v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n to\u00e0n c\u1ea7u kh\u1ed5ng l\u1ed3 \u0111\u1ee9ng sau n\u00f3. Nagios Exchange &#8211; kho l\u01b0u tr\u1eef plugin ch\u00ednh th\u1ee9c &#8211; hi\u1ec7n ch\u1ee9a h\u01a1n 5.000 plugin do c\u1ed9ng \u0111\u1ed3ng \u0111\u00f3ng g\u00f3p, bao ph\u1ee7 m\u1ecdi lo\u1ea1i thi\u1ebft b\u1ecb v\u00e0 d\u1ecbch v\u1ee5 t\u1eeb m\u00e1y ch\u1ee7 Linux\/Windows, thi\u1ebft b\u1ecb m\u1ea1ng Cisco, c\u01a1 s\u1edf d\u1eef li\u1ec7u MySQL\/PostgreSQL cho \u0111\u1ebfn c\u00e1c d\u1ecbch v\u1ee5 \u0111\u00e1m m\u00e2y nh\u01b0 AWS v\u00e0 Azure.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u00ean c\u1ea1nh \u0111\u00f3, h\u1ec7 th\u1ed1ng di\u1ec5n \u0111\u00e0n, wiki v\u00e0 t\u00e0i li\u1ec7u phong ph\u00fa gi\u00fap ng\u01b0\u1eddi d\u00f9ng d\u1ec5 d\u00e0ng t\u00ecm ki\u1ebfm gi\u1ea3i ph\u00e1p cho m\u1ecdi v\u1ea5n \u0111\u1ec1 g\u1eb7p ph\u1ea3i. S\u1ef1 h\u1ed7 tr\u1ee3 t\u1eeb c\u1ed9ng \u0111\u1ed3ng kh\u00f4ng ch\u1ec9 gi\u00fap gi\u1ea3m chi ph\u00ed ph\u00e1t tri\u1ec3n m\u00e0 c\u00f2n \u0111\u1ea3m b\u1ea3o Nagios lu\u00f4n \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt v\u00e0 c\u1ea3i ti\u1ebfn li\u00ean t\u1ee5c theo xu h\u01b0\u1edbng c\u00f4ng ngh\u1ec7 m\u1edbi nh\u1ea5t.<\/span><\/p>\n<h3><b>Theo d\u00f5i to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng h\u1ea1 t\u1ea7ng<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Nagios cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t to\u00e0n di\u1ec7n tr\u00ean nhi\u1ec1u l\u1edbp h\u1ea1 t\u1ea7ng CNTT, t\u1eeb ph\u1ea7n c\u1ee9ng v\u1eadt l\u00fd \u0111\u1ebfn ph\u1ea7n m\u1ec1m v\u00e0 d\u1ecbch v\u1ee5 m\u1ea1ng. H\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 theo d\u00f5i \u0111\u1ed3ng th\u1eddi h\u00e0ng ngh\u00ecn m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb, bao g\u1ed3m m\u00e1y ch\u1ee7 v\u1eadt l\u00fd, m\u00e1y \u1ea3o, container Docker, thi\u1ebft b\u1ecb m\u1ea1ng (router, switch, firewall), m\u00e1y in v\u00e0 th\u1eadm ch\u00ed c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb IoT.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u1edbi kh\u1ea3 n\u0103ng ki\u1ec3m tra \u0111a d\u1ea1ng nh\u01b0 HTTP\/HTTPS, FTP, SSH, SMTP, DNS, POP3, IMAP v\u00e0 nhi\u1ec1u giao th\u1ee9c kh\u00e1c, Nagios \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 \u0111i\u1ec3m m\u00f9 n\u00e0o trong h\u1ec7 th\u1ed1ng. Ngo\u00e0i ra, t\u00ednh n\u0103ng gi\u00e1m s\u00e1t ph\u00e2n t\u00e1n cho ph\u00e9p tri\u1ec3n khai nhi\u1ec1u m\u00e1y ch\u1ee7 Nagios \u0111\u1ec3 theo d\u00f5i c\u00e1c v\u0103n ph\u00f2ng ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u t\u1ea1i nhi\u1ec1u \u0111\u1ecba \u0111i\u1ec3m \u0111\u1ecba l\u00fd kh\u00e1c nhau.<\/span><\/p>\n<h3><b>L\u00ean k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p \u0111\u1ecbnh k\u1ef3<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t t\u00ednh n\u0103ng th\u01b0\u1eddng b\u1ecb b\u1ecf qua nh\u01b0ng c\u1ef1c k\u1ef3 h\u1eefu \u00edch c\u1ee7a Nagios l\u00e0 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 l\u00ean k\u1ebf ho\u1ea1ch b\u1ea3o tr\u00ec v\u00e0 n\u00e2ng c\u1ea5p h\u1ec7 th\u1ed1ng. Th\u00f4ng qua ch\u1ebf \u0111\u1ed9 <\/span><b>Scheduled Downtime<\/b><span style=\"font-weight: 400;\">, qu\u1ea3n tr\u1ecb vi\u00ean c\u00f3 th\u1ec3 \u0111\u1eb7t l\u1ecbch b\u1ea3o tr\u00ec cho t\u1eebng m\u00e1y ch\u1ee7 ho\u1eb7c d\u1ecbch v\u1ee5, trong th\u1eddi gian \u0111\u00f3 Nagios s\u1ebd t\u1ea1m ng\u01b0ng g\u1eedi c\u1ea3nh b\u00e1o \u0111\u1ec3 tr\u00e1nh nhi\u1ec5u lo\u1ea1n th\u00f4ng tin.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">D\u1eef li\u1ec7u l\u1ecbch s\u1eed v\u1ec1 hi\u1ec7u su\u1ea5t h\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c thu th\u1eadp li\u00ean t\u1ee5c gi\u00fap \u0111\u1ed9i k\u1ef9 thu\u1eadt nh\u1eadn ra xu h\u01b0\u1edbng suy gi\u1ea3m tr\u01b0\u1edbc khi s\u1ef1 c\u1ed1 x\u1ea3y ra, t\u1eeb \u0111\u00f3 l\u1eadp k\u1ebf ho\u1ea1ch n\u00e2ng c\u1ea5p ph\u1ea7n c\u1ee9ng hay m\u1edf r\u1ed9ng dung l\u01b0\u1ee3ng m\u1ed9t c\u00e1ch ch\u1ee7 \u0111\u1ed9ng v\u00e0 c\u00f3 c\u0103n c\u1ee9. T\u00ednh n\u0103ng b\u00e1o c\u00e1o n\u00e2ng cao c\u1ee7a Nagios XI c\u00f2n cung c\u1ea5p c\u00e1c bi\u1ec3u \u0111\u1ed3 v\u00e0 dashboard tr\u1ef1c quan, gi\u00fap ban l\u00e3nh \u0111\u1ea1o \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 h\u1ea1 t\u1ea7ng d\u1ef1a tr\u00ean d\u1eef li\u1ec7u th\u1ef1c t\u1ebf.<\/span><\/p>\n<h2><b>C\u00e1ch c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh Nagios<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 c\u00e0i \u0111\u1eb7t Nagios Core tr\u00ean h\u1ec7 th\u1ed1ng Linux (CentOS\/RHEL ho\u1eb7c Ubuntu), qu\u1ea3n tr\u1ecb vi\u00ean c\u1ea7n th\u1ef1c hi\u1ec7n tu\u1ea7n t\u1ef1 c\u00e1c b\u01b0\u1edbc sau:<\/span><\/p>\n<figure id=\"attachment_4497\" aria-describedby=\"caption-attachment-4497\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4497 size-full\" title=\"C\u00e1ch c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh Nagios\" src=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagio-3tv.png\" alt=\"C\u00e1ch c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh Nagios\" width=\"600\" height=\"400\" srcset=\"https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagio-3tv.png 600w, https:\/\/technest.com.vn\/wp-content\/uploads\/2026\/05\/nagio-3tv-300x200.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-4497\" class=\"wp-caption-text\">C\u00e1ch c\u00e0i \u0111\u1eb7t v\u00e0 c\u1ea5u h\u00ecnh Nagios<\/figcaption><\/figure>\n<h3><b>B\u01b0\u1edbc 1: C\u00e0i \u0111\u1eb7t c\u00e1c g\u00f3i ph\u1ee5 thu\u1ed9c<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Tr\u01b0\u1edbc ti\u00ean, c\u1ea7n c\u00e0i \u0111\u1eb7t c\u00e1c th\u01b0 vi\u1ec7n v\u00e0 c\u00f4ng c\u1ee5 c\u1ea7n thi\u1ebft b\u1eb1ng tr\u00ecnh qu\u1ea3n l\u00fd g\u00f3i c\u1ee7a h\u1ec7 \u0111i\u1ec1u h\u00e0nh. Tr\u00ean CentOS\/RHEL, s\u1eed d\u1ee5ng l\u1ec7nh <\/span><span style=\"font-weight: 400;\">yum install -y gcc glibc glibc-common wget unzip httpd php gd gd-devel<\/span><span style=\"font-weight: 400;\">. Tr\u00ean Ubuntu\/Debian, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng l\u00e0 <\/span><span style=\"font-weight: 400;\">apt install -y autoconf gcc libc6 make wget unzip apache2 php libapache2-mod-php libgd-dev<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 2: T\u1ea3i v\u00e0 bi\u00ean d\u1ecbch m\u00e3 ngu\u1ed3n Nagios<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1ea3i m\u00e3 ngu\u1ed3n Nagios Core m\u1edbi nh\u1ea5t t\u1eeb trang ch\u1ee7 nagios.org, gi\u1ea3i n\u00e9n v\u00e0 bi\u00ean d\u1ecbch t\u1eeb source b\u1eb1ng c\u00e1c l\u1ec7nh <\/span><span style=\"font-weight: 400;\">.\/configure<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">make all<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">make install<\/span><span style=\"font-weight: 400;\">. Qu\u00e1 tr\u00ecnh n\u00e0y t\u1ea1o ra t\u1ec7p nh\u1ecb ph\u00e2n Nagios v\u00e0 c\u00e0i \u0111\u1eb7t c\u1ea5u tr\u00fac th\u01b0 m\u1ee5c chu\u1ea9n t\u1ea1i <\/span><span style=\"font-weight: 400;\">\/usr\/local\/nagios\/<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 3: T\u1ea1o ng\u01b0\u1eddi d\u00f9ng v\u00e0 ph\u00e2n quy\u1ec1n<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1ea1o t\u00e0i kho\u1ea3n h\u1ec7 th\u1ed1ng <\/span><span style=\"font-weight: 400;\">nagios<\/span><span style=\"font-weight: 400;\"> v\u00e0 th\u00eam v\u00e0o nh\u00f3m <\/span><span style=\"font-weight: 400;\">www-data<\/span><span style=\"font-weight: 400;\"> (ho\u1eb7c <\/span><span style=\"font-weight: 400;\">apache<\/span><span style=\"font-weight: 400;\">) \u0111\u1ec3 Apache c\u00f3 th\u1ec3 ch\u1ea1y CGI script c\u1ee7a Nagios. \u0110\u1eb7t m\u1eadt kh\u1ea9u cho t\u00e0i kho\u1ea3n web admin qua l\u1ec7nh <\/span><span style=\"font-weight: 400;\">htpasswd -c \/usr\/local\/nagios\/etc\/htpasswd.users nagiosadmin<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 4: C\u00e0i \u0111\u1eb7t Nagios Plugins<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">T\u1ea3i v\u00e0 bi\u00ean d\u1ecbch b\u1ed9 plugin ch\u00ednh th\u1ee9c t\u1eeb kho nagios-plugins. C\u00e1c plugin n\u00e0y cung c\u1ea5p h\u00e0ng tr\u0103m l\u1ec7nh ki\u1ec3m tra s\u1eb5n c\u00f3 nh\u01b0 <\/span><span style=\"font-weight: 400;\">check_ping<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">check_http<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">check_disk<\/span><span style=\"font-weight: 400;\">, <\/span><span style=\"font-weight: 400;\">check_cpu<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 5: C\u1ea5u h\u00ecnh \u0111\u1ed1i t\u01b0\u1ee3ng gi\u00e1m s\u00e1t<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng nh\u1ea5t. C\u00e1c t\u1ec7p c\u1ea5u h\u00ecnh c\u1ee7a Nagios n\u1eb1m trong <\/span><span style=\"font-weight: 400;\">\/usr\/local\/nagios\/etc\/<\/span><span style=\"font-weight: 400;\"> v\u00e0 \u0111\u01b0\u1ee3c vi\u1ebft theo \u0111\u1ecbnh d\u1ea1ng \u0111\u1eb7c bi\u1ec7t. Qu\u1ea3n tr\u1ecb vi\u00ean c\u1ea7n \u0111\u1ecbnh ngh\u0129a: <\/span><b>Host<\/b><span style=\"font-weight: 400;\"> (c\u00e1c m\u00e1y ch\u1ee7 c\u1ea7n gi\u00e1m s\u00e1t), <\/span><b>Service<\/b><span style=\"font-weight: 400;\"> (c\u00e1c d\u1ecbch v\u1ee5 tr\u00ean m\u1ed7i host), <\/span><b>Contact<\/b><span style=\"font-weight: 400;\"> (ng\u01b0\u1eddi nh\u1eadn c\u1ea3nh b\u00e1o), <\/span><b>Timeperiod<\/b><span style=\"font-weight: 400;\"> (th\u1eddi gian gi\u00e1m s\u00e1t v\u00e0 th\u00f4ng b\u00e1o) v\u00e0 <\/span><b>Command<\/b><span style=\"font-weight: 400;\"> (l\u1ec7nh ki\u1ec3m tra s\u1eed d\u1ee5ng plugin n\u00e0o).<\/span><\/p>\n<h3><b>B\u01b0\u1edbc 6: Kh\u1edfi \u0111\u1ed9ng d\u1ecbch v\u1ee5 v\u00e0 ki\u1ec3m tra<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Sau khi ho\u00e0n t\u1ea5t c\u1ea5u h\u00ecnh, ch\u1ea1y l\u1ec7nh ki\u1ec3m tra c\u00fa ph\u00e1p <\/span><span style=\"font-weight: 400;\">\/usr\/local\/nagios\/bin\/nagios -v \/usr\/local\/nagios\/etc\/nagios.cfg<\/span><span style=\"font-weight: 400;\"> \u0111\u1ec3 ph\u00e1t hi\u1ec7n l\u1ed7i tr\u01b0\u1edbc khi kh\u1edfi \u0111\u1ed9ng. Sau \u0111\u00f3 k\u00edch ho\u1ea1t d\u1ecbch v\u1ee5 b\u1eb1ng <\/span><span style=\"font-weight: 400;\">systemctl start nagios<\/span><span style=\"font-weight: 400;\"> v\u00e0 <\/span><span style=\"font-weight: 400;\">systemctl enable nagios<\/span><span style=\"font-weight: 400;\">. Truy c\u1eadp giao di\u1ec7n web t\u1ea1i <\/span><span style=\"font-weight: 400;\">http:\/\/your-server-ip\/nagios<\/span><span style=\"font-weight: 400;\"> \u0111\u1ec3 b\u1eaft \u0111\u1ea7u theo d\u00f5i h\u1ec7 th\u1ed1ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nagios \u0111\u00e3 v\u00e0 \u0111ang ch\u1ee9ng minh gi\u00e1 tr\u1ecb c\u1ee7a m\u00ecnh qua h\u01a1n 25 n\u0103m ph\u00e1t tri\u1ec3n, tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 kh\u00f4ng th\u1ec3 thi\u1ebfu trong b\u1ed9 c\u00f4ng c\u1ee5 c\u1ee7a m\u1ecdi qu\u1ea3n tr\u1ecb vi\u00ean h\u1ec7 th\u1ed1ng chuy\u00ean nghi\u1ec7p. D\u00f9 b\u1ea1n \u0111ang qu\u1ea3n l\u00fd m\u1ed9t h\u1ea1 t\u1ea7ng nh\u1ecf hay m\u1ed9t h\u1ec7 th\u1ed1ng doanh nghi\u1ec7p quy m\u00f4 l\u1edbn, Nagios \u0111\u1ec1u c\u00f3 th\u1ec3 cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t to\u00e0n di\u1ec7n, tin c\u1eady v\u00e0 linh ho\u1ea1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n lu\u00f4n ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u qu\u1ea3.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Trong th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7 th\u00f4ng tin hi\u1ec7n \u0111\u1ea1i, vi\u1ec7c \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c l\u00e0 y\u00eau c\u1ea7u s\u1ed1ng c\u00f2n c\u1ee7a m\u1ecdi doanh nghi\u1ec7p. Ch\u1ec9 c\u1ea7n m\u1ed9t s\u1ef1 c\u1ed1 nh\u1ecf x\u1ea3y ra m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n k\u1ecbp th\u1eddi, h\u1eadu qu\u1ea3 c\u00f3 th\u1ec3 l\u00e0 h\u00e0ng gi\u1edd gi\u00e1n \u0111o\u1ea1n d\u1ecbch<\/p>\n","protected":false},"author":1,"featured_media":4496,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[84],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/4489"}],"collection":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/comments?post=4489"}],"version-history":[{"count":2,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/4489\/revisions"}],"predecessor-version":[{"id":4499,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/posts\/4489\/revisions\/4499"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/media\/4496"}],"wp:attachment":[{"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/media?parent=4489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/categories?post=4489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/technest.com.vn\/vi\/wp-json\/wp\/v2\/tags?post=4489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}