CentOS下LVS+Keepalived配置过程

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yum install kernel-devel
yum install kernel-headers
yum install openssl-devel
wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz
wget http://www.keepalived.org/software/keepalived-1.1.20.tar.gz
[root@mail ipvsadm-1.24]# uname -r
2.6.18-194.32.1.el5
[root@mail ipvsadm-1.24]# ln -s /usr/src/kernels/2.6.18-194.32.1.el5-x86_64/ /usr/src/linux
[root@mail ipvsadm-1.24]# make
make -C libipvs
make[1]: Entering directory `/software/ipvsadm-1.24/libipvs'
gcc -Wall -Wunused -Wstrict-prototypes -g -O2 -I/usr/src/linux/include  -DHAVE_NET_IP_VS_H -c -o libipvs.o libipvs.c
ar rv libipvs.a libipvs.o
ar: creating libipvs.a
a - libipvs.o
make[1]: Leaving directory `/software/ipvsadm-1.24/libipvs'
gcc -Wall -Wunused -Wstrict-prototypes -g -O2 -I/usr/src/linux/include -I.. -I. -DVERSION=\"1.24\" -DSCHEDULERS=\""rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq"\" -DHAVE_POPT -DHAVE_NET_IP_VS_H -c -o ipvsadm.o ipvsadm.c
ipvsadm.c: In function 鈥榩rint_largenum鈥?
ipvsadm.c:1564: warning: field width should have type 鈥榠nt鈥? but argument 2 has type 鈥榮ize_t鈥?
                                                                                                      gcc -Wall -Wunused -Wstrict-prototypes -g -O2 -I/usr/src/linux/include -I.. -I. -DVERSION=\"1.24\" -DSCHEDULERS=\""rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq"\" -DHAVE_POPT -DHAVE_NET_IP_VS_H -c -o config_stream.o config_stream.c
gcc -Wall -Wunused -Wstrict-prototypes -g -O2 -I/usr/src/linux/include -I.. -I. -DVERSION=\"1.24\" -DSCHEDULERS=\""rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq"\" -DHAVE_POPT -DHAVE_NET_IP_VS_H -c -o dynamic_array.o dynamic_array.c
gcc -Wall -Wunused -Wstrict-prototypes -g -O2 -o ipvsadm ipvsadm.o config_stream.o dynamic_array.o libipvs/libipvs.a -L/usr/lib -lpopt
/usr/bin/ld: skipping incompatible /usr/lib/libpopt.so when searching for -lpopt
/usr/bin/ld: skipping incompatible /usr/lib/libpopt.a when searching for -lpopt
/usr/bin/ld: skipping incompatible /usr/lib/libc.so when searching for -lc
/usr/bin/ld: skipping incompatible /usr/lib/libc.a when searching for -lc
[root@mail ipvsadm-1.24]# make install
make -C libipvs
make[1]: Entering directory `/software/ipvsadm-1.24/libipvs'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/software/ipvsadm-1.24/libipvs'
if [ ! -d /sbin ]; then mkdir -p /sbin; fi
install -m 0755 -s ipvsadm /sbin
install -m 0755 ipvsadm-save /sbin
install -m 0755 ipvsadm-restore /sbin
[ -d /usr/man/man8 ] || mkdir -p /usr/man/man8
install -m 0644 ipvsadm.8 /usr/man/man8
install -m 0644 ipvsadm-save.8 /usr/man/man8
install -m 0644 ipvsadm-restore.8 /usr/man/man8
if [ -d /etc/rc.d/init.d ]; then \
                  install -m 0755 ipvsadm.sh /etc/rc.d/init.d/ipvsadm; \
                fi

 tar -zxvf keepalived-1.1.20.tar.gz
[root@mail software]# cd keepalived-1.1.20
[root@mail keepalived-1.1.20]# ./configure --prefix=/usr/local/keepalived
make
make install

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

vi /etc/rc.local;
ip addr add 202.142.28.136/32 dev eth1

vi /usr/local/bin/lvs.sh
#!/bin/bash
VIP=192.168.0.136
RIP1=192.168.0.135
RIP2=192.168.0.134
/sbin/ipvsadm -C
/sbin/ipvsadm -A -t $VIP:80 -s rr
/sbin/ipvsadm -a -t $VIP:80 -r $RIP1:80 -g
/sbin/ipvsadm -a -t $VIP:80 -r $RIP2:80 -g
[root@mail bin]# chmod a+x lvs.sh

[root@mail bin]# vi /etc/sysctl.conf
net.ipv4.ip_forward = 1
[root@mail bin]# sysctl -p
net.ipv4.ip_forward = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_synCOOKIEs = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
net.ipv4.tcp_max_syn_backlog = 65536
net.core.netdev_max_backlog = 32768
net.core.somaxcOnn= 32768
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_time = 120
net.ipv4.ip_local_port_range = 1024  65535

[root@mail /]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
   notification_email {
     mail@domain.com
   }
   notification_email_from mail@domain.com
   smtp_server 192.168.0.15
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface eth1
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.0.136
    }
}

virtual_server 192.168.0.136 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 192.168.0.134 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
        }
    }

    real_server 192.168.0.134 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 10
            nb_get_retry 3
            delay_before_retry 3
        }
    }

}