RedHat Enterprise LinuxでWebサーバロードバランス(2)

Keepalivedもやってみよー!! ってことで

１−１．OpenSSL0.9.8eのインストール

# ./configure ; make
# sudo make install

１−２．keepalivedのインストール

# CPPFLAGS='-I /usr/local/ssl/include' ./configure \
--with-kernel-dir=/usr/src/linux-2.4.21-32.EL \
--disable-lvs-syncd
# make
# sudo make install

１−３．keepalived.confの作成

# vi /usr/local/etc/keepalived/keepalived.conf
virtual_server 192.168.1.100 80 {
        delay_loop      3
        lvs_sched       wrr
        lvs_method      DR
        protocol        TCP
        real_server     192.168.1.7 80 {
                weight  1
                inhibit_on_failure
                TCP_CHECK {
                        connect_port    80
                        connect_timeout 1
                }
        }
        real_server     192.168.1.8 80 {
                weight  1
                inhibit_on_failure
                TCP_CHECK {
                        connect_port    80
                        connect_timeout 1
                }
        }
}

virtual_server 192.168.1.101 80 {
        delay_loop      3
        lvs_sched       wrr
        lvs_method      DR
        protocol        TCP
        real_server     192.168.1.7 80 {
                weight  1
                inhibit_on_failure
                TCP_CHECK {
                        connect_port    80
                        connect_timeout 1
                }
        }
        real_server     192.168.1.8 80 {
                weight  1
                inhibit_on_failure
                TCP_CHECK {
                        connect_port    80
                        connect_timeout 1
                }
        }
}

１−４．ipvsadmのテーブルクリア

# ipvsadm -C

１−５．keepalivedの起動

# keepalived -e /usr/local/etc/keepalived/keepalived.conf

１−６．確認

# ipvsadm
IP Virtual Server version 1.0.8 (size=65536)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.1.100:http wrr
  -> 192.168.1.8:http             Route   0      0          0         
  -> 192.168.1.7:http             Route   1      0          0       
TCP  192.168.1.101:http wrr
  -> 192.168.1.8:http             Route   0      0          0         
  -> 192.168.1.7:http             Route   1      0          0

取りあえず、ちゃんと動いてるっぽい。。
Weight=0のサーバは本当に電源Offになってる奴。