2009/1/15 chairuou <chairuou at gmail.com>:
> L? Anh S?n wrote:
>> Em ?? c?i 1 con webserver, dns server
>> Nh?ng e ch?a bi?t c?ch b?o tr? n? nh? th? n?o!
>> Ai c? kinh nghi?m h??ng d?n em v?i!
>> Bao l?u th? kh?i ??ng l?i m?t l?n, c?ch th?c backup nh? th? n?o?
>>
>>
> ;) T?i sao c?n kh?i ??ng l?i ?
Linux c? th? ch?y 100% uptime trong th?i gian t?nh b?ng n?m.
Sysadmin gi?i l? ng??i gi?m ???c downtime ??n t?i thi?u.
V?i Linux th? ch? c? l? do g? ?? kh?i ??ng l?i.
Users b?n Windows quen v?i kernel ch?t l??ng k?m,
ch??ng tr?nh t?i leak nhi?u memory trong qu? tr?nh v?n h?nh.
Do ?? ph?i kh?i ??ng l?i.
V?i Linux, n?u ch?y nh?ng ch??ng tr?nh ?n ??nh nh? Apache, MySQL
th? kh?ng c? l? do kh?ng n?o b?t admin ph?i kh?i ??ng l?i server.
> V? ph?n "c?ch th?c backup nh? th? n?o" th? b?n c? th? t? tr? l?i b?ng
> c?ch tr? l?i c?u h?i:
> - v?i webserver th? c?n l?u l?i nh?ng g? ?? trong tr??ng h?p m?y ch?
> h?ng c? th? kh?i ph?c l?i d?ch v? nhanh nh?t
> v?i g?i ?: config, web pages (static, dynamic), database
> - c?ch th?c backup th? c? nhi?u, backup th? c?ng, backup b?ng script t?
> vi?t v? ch?y v?i cron, backup to?n b? system v?i c?c tool nh? backuppc...
> Ngo?i ra vi?c maintenance m?t m?y ch? theo ??ng ngh?a c?ng kh?ng h? ??n
> gi?n m?c d? kh?ng ph?i l? vi?c kh?, kinh nghi?m c?a t?i l?: ghi l?i m?i
> th? b?n l?m v?i c?i m?y ch? ??, t? qu? tr?nh c?i ??t OS, drivers, config
> cho c?c thi?t b?, config network. M?i thay ??i n?y c?n ???c l?u tr? l?i
> theo tr?nh t? th?i gian. Th?m ch? c?ch c?i b??i nh?t l? khi ch?nh s?a
> config, ghi ch? l?i b?ng comment ngay trong config file. Tuy nhi?n t?t
> nh?t l? n?n ghi ch?p l?i c?ng chi ti?t c?ng t?t.
Xin b? xung th?m 1 ch?t:
- Incremental backup: Ch? backup nh?ng thay ??i c?a l?n backup
tr??c v? sau. N?n ti?n h?nh l?m h?ng ng?y. Dung l??ng c?a lo?i
backup n?y n?i chung nh?( so v?i Full backup).
- Full backup: Backup to?n b? h? th?ng. N?n l?m kho?ng 1 tu?n 1 l?n,
t?y v?o chi?n l??c backup, m?c quan tr?ng c?a d? li?u v? s?
h?o ph?ng c?a ? c?ng.
- Offsite backup: ?? ph?ng h?a ho?n ch?y n?, ??ng ??t.
V? d? server ch?nh ??t ? HCMC th? n?n ??t m?t offsite backup server
? Hanoi. Optional nh?ng n?u m?t d? li?u m? kh?ng c? offline backup
l? ... ?au ??y. C?n t?c v? ?y n?y .
> HTH,
Hello Mr. H?p R?t Heo.
--
Best Regards,
Nguyen Hung Vu [aka: NVH] ( in Vietnamese: Nguy?n V? H?ng )
vuhung16plus{[email protected] , YIM: vuhung16 , Skype: vuhung16dg
A brief profile: http://www.hn.is.uec.ac.jp/~vuhung/Nguyen.Vu.Hung.html
