Setup repository for CentOS updates

To save download time and bandwidth every time I install a fresh CentOS system.

I use the cuhk mirror at:

ftp://ftp.cuhk.edu.hk/pub/Linux/centos/

Create this tree structure:

mkdir -p /mnt/usbdisk/centos/updates/
mkdir -p /mnt/usbdisk/centos/extras/
mkdir -p /mnt/usbdisk/centos/epel/

Run this script using cron.

#!/bin/bash

# mirror the updates from cuhk centos mirror
MIRROR_DIR=/mnt/usbdisk/centos

if [ ! -d "$MIRROR_DIR" ] ; then
        echo "Local mirror directory does not exist."
        exit 1
fi

cd $MIRROR_DIR
lftp -f $MIRROR_DIR/centos.lftp

centos.lftp

open ftp://ftp.cuhk.edu.hk/pub/Linux/centos/5/

mirror --delete --no-symlinks updates/i386 updates

mirror --delete --no-symlinks extras/i386 extras

open ftp://ftp.riken.jp/Linux/fedora/epel/5/

mirror --delete --no-symlinks i386 epel

Add these to nginx config:

        location /centos {
                root  /mnt/usbdisk/;
                autoindex on;
                allow 192.168.0.0/16;
                deny all;
        }

Set in yum repo config

[updates]
baseurl=http://<server_ip>/centos/updates/
...

[extras]
baseurl=http://<server_ip>/centos/extras/
...

[epel]
baseurl=http://<server_ip>/centos/epel/
...