LVS+keepalived 安装脚本

#!/bin/bash

#BY_SA: qq 917611
#2015/07/23
# LVS_Keepalived 安装脚本 DR模式


. /etc/rc.d/init.d/functions

ipvsadm=" />
keepalived=" />
PROC=`grep -c  processor /proc/cpuinfo`

function kernel() {
        while true;do
    printf "please input kernel path: path: `ls /usr/src/kernels/`
        /usr/src/kernels/2.6.32-504.30.3.el6.x86_64
    \n"

        read -p "please input Kernel path: " kernel

        if [ -z  ${kernel} ];then
                continue
        fi

        if [ ! -d ${kernel} ];then
                echo "kernel path input error."
                        continue
        fi
            break
done
}
ipvsadm_install() {
    curl -# -O ${ipvsadm}
    tar xf ipvsadm-1.26.tar.gz
    if [ $? -eq 0 ];then
        cd ipvsadm-1.26
        yum install -y gcc gcc-c++ makepcre pcre-devel kernel-devel openssl-devel libnl-devel popt-devel popt-static
        make -j${PROC} && make install
        which ipvsadm > /dev/null 2>&1 && printf "=========================================================
                                        ipvsadm install success
                        ===================================================================" \
         || exit 1
        sleep 2

    else
        echo "ipvsadm download failed."
    fi
}
keepalived_install() {
    curl -# -O ${keepalived}
    tar xvf keepalived-1.2.10.tar.gz > /dev/null 2>&1
    if [ $? -eq 0 ];then
        cd keepalived-1.2.10
         kernel
        ./configure --sysconf=/etc --with-kernel-dir=${kernel}
        make -j${PROC};make install
        ls /etc/keepalived && echo "Keepalived Install success." || exit 1
    else
        echo "keepalived download failed."
        exit 1
    fi
}
keepalived_config() {
    cp -a /etc/keepalived.conf /etc/keepalived.conf.$(date -I)
    cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
   notification_email {
    [e-mail]
   }
   notification_email_from [e-mail]
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.20.10.200
    }
}

virtual_server 172.20.10.200 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 3
    protocol TCP

real_server 172.20.10.238 80 {
        weight 1
        TCP_CHECK {
           connect_port 80
           connect_timeout 3
           nb_get_retry 3
           delay_before_retry 3
        }
}

real_server 172.20.10.239 80 {
        weight 1
        TCP_CHECK {
           connect_port 80
           connect_timeout 3
           nb_get_retry 3
           delay_before_retry 3
        }
    }
}
EOF
}


function real_server() {
    echo "                ============================                "
    echo "                real_server running  script||                "
    echo "                real_server running  script||                "
    echo "                real_server running  script||                "
    echo "                ===========================                "
    sleep 1

printf '
#!/bin/bash
VIP='172.20.10.200'
. /etc/init.d/functions
    case "$1" in
      start)
        /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
        echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore
        echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce
        echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore
        echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce
        echo " LVS Real-Server Start Success"
          ;;
        stop)
         /sbin/ifconfig lo:0 down
         echo "0" > /proc/sys/net/ipv4/conf/lo/arp_ignore
         echo "0" > /proc/sys/net/ipv4/conf/lo/arp_announce
         echo "0" > /proc/sys/net/ipv4/conf/all/arp_ignore
         echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce
         echo " LVS Real-Server Stop Success"
          ;;
           *)
         echo "Usage: $0 ( start | stop )"
         exit 1
    esac\n'
    printf "\n\n"
    printf "======================================================================================\n"
}

#main
    ipvsadm_install
    keepalived_install
    keepalived_config
    real_server
/etc/init.d/keepalived restart
ipvsadm -Ln