[클러스터] LVS-Tun 방식 설치 초 간단 정리

######    Director 및 Real Server의 kernel compile ######

    * /usr/src/ 경로에 linux-2.4.26.tar.gz 파일이 있다고 가정 ( ftp://ftp.kernel.org/pub/linux/kernel/v2.4/ )

    # tar xvfzp linux-2.4.26.tar.gz       ==> 압축해제

    # ln -s linux-2.4.26 linux              ==> linux 로 심볼릭 링크

    # cd /usr/include

    # mv asm asm_backup               ==> 기존의 헤더 파일을 새로운 헤더파일로 참조하도록 변경

    # mv scsi scsi_backup

    # mv linux linux_backup

    # mv net net_backup

    # ln -s /usr/src/linux/include/asm-i386 asm

    # ln -s /usr/src/linux/include/asm-generic

    # ln -s /usr/src/linux/include/linux

    # ln -s /usr/src/linux/include/scsi

    # cd /usr/src

      * lvs-tun 방식은 arp 문제가 있으므로 2.4.x 커널은 hidden-patch를 적용해야 한다.

         (다운로드 : http://www.ssi.bg/~ja/)

    # patch -p0 < hidden-2.4.26-1.diff

    # make menuconfig

       * 커널 옵션 필수 선택 사항입니다.

          – Networking options

            CONFIG_PACKET=y

            CONFIG_NETFILTER=y

            CONFIG_UNIX=y

            CONFIG_INET=y

            CONFIG_NET_IPIP=y

         –  IP: Virtual Server Configuration

            CONFIG_IP_VS=y

            CONFIG_IP_VS_DEBUG=y

            CONFIG_IP_VS_TAB_BITS=12

            CONFIG_IP_VS_WLC=y  (알고리즘은 wlc를 사용)

    # nice –adjustment=-20 make dep clean bzImage modules modules_install

      * nice는…… 쬠이라도 빨랑 컴파일하도록… ^^;;;

    # cp arch/i386/boot/bzImage /boot/vmlinuz-2.4.26

    # cp System.map /boot/System.map-2.4.26

      * grub나 lilo를 적용하신후 재부팅~

####  Director 설치

   * VIP       : 192.168.0.251

   * Director : 192.168.0.250

   * Real 1   : 192.168.0.200

   * Real 2   : 192.168.0.100

     라고 가정합니다.

1. ipvsadm 설치

    # tar xvfzp ipvsadm-1.21.9.tar.gz

    # cd ipvsadm-1.21.9

    # make all

    # make install

    # ipvsadm

      IP Virtual Server version 1.0.11 (size=4096)

      Prot LocalAddress:Port Scheduler Flags

         -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

      * 이렇게 나오면 성공

2. VIP 설정

    # ifconfig eth0:0 192.168.0.251 netmask 255.255.255.255 broadcast 192.168.0.251 up

    # route add -host 192.168.0.251 dev eth0:0

    # echo 1 > /proc/sys/net/ipv4/ip_forward

3. ipvsadm 설정

    # ipvsadm -A -t 192.168.0.251:80 -s wlc

    # ipvsadm -a -t 192.168.0.251:80 -r 192.168.0.200 -i

    # ipvsadm -a -t 192.168.0.251:80 -r 192.168.0.100 -i

    # ipvsadm

       IP Virtual Server version 1.0.11 (size=4096)

       Prot LocalAddress:Port Scheduler Flags

          -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

       TCP  192.168.0.251:http wlc

          -> 192.168.0.100:http                Tunnel   1         0               0        

          -> 192.168.0.200:http                Tunnel   1         0               0

    

###### Real Server 설정 ######

# echo “net.ipv4.conf.all.rp_filter = 1” >> /etc/sysctl.conf

# echo “net.ipv4.conf.lo.hidden = 1” >> /etc/sysctl.conf

# echo “net.ipv4.conf.default.hidden = 1” >> /etc/sysctl.conf

# echo “net.ipv4.conf.all.hidden = 1” >> /etc/sysctl.conf

# /sbin/sysctl -p

# ifconfig tunl0 192.168.0.251 netmask 255.255.255.255 broadcast 192.168.0.255 up

# route add -host 192.168.0.251 dev tunl0

# echo 0 > /proc/sys/net/ipv4/conf/tunl0/rp_filter

## 위의 과정으로 LVS-Tun 방식을 테스트 했습니다.