系统运维 RAID 基础
RAID 1+0：完成空间后是实际空间一半；
例如：硬盘为8块300GB，总共2.4TB；做完后是1.2TB
RAID 5：完成后空间比实际空间少一块硬盘
例如：硬盘为8块300GB，总共2.4TB；做完后是2.1TB
RAID 0：条带
RAID 1：镜像
Nginx Proxy & Load Balance & LNMP
Nginx Proxy Service E-commerce website Server 1: provide image request response ( apache / nginx ) Server 2: provide dynamic request response ( php-fpm / apache-php ) Server 3: provide static request response ( apache / nginx ) Server 4: provide data request response ( mysql ) It need one additional nginx server 1. Install nginx 2. proxy to specific server Example location / { proxy_pass http://192.168.199.187:80/; } location /bbs/ { proxy_pass http://192.168.199.187:80/bbs/; } location ~* \.(jpg|png|gif)$ { proxy_pass http://172.16.100.7; } Enhance the log information and specific the hostname location / { proxy_pass http://192.168.199.187:80/; proxy_set_header <parameter name> $host; (client requst the hostname ) proxy_set_header <parameter name> $remote_addr; ...
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