LVS + Keepalived之tun模式

古城微笑少年丶 2022-08-03 11:40 352阅读 0赞

`一、仅lvs服务器端安装`

`yum install ipvsadm openssl-devel popt popt-devel libnl-devel`

`cd /opt/src/`

`tar xzvf keepalived-1.2.7.tar.gz`

`cd keepalived-1.2.7`

`./configure`

`make && make install`

`cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/`

`cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/`

`mkdir /etc/keepalived`

`cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/`

`cp /usr/local/sbin/keepalived /usr/sbin/`

`修改/etc/keepalived/keepalived.conf文件`

`[root@WEB ~]# cat /etc/keepalived/keepalived.conf`

`! Configuration File for keepalived`

`global_defs {`

`` `notification_email {`

`` `123@123.com`

`` `}`

`` `notification_email_from 123@123.com`

`` `smtp_server mail.123.com`

`` `smtp_connect_timeout 30`

`` `router_id LVS_DEVEL`

`}`

`vrrp_instance VI_1 {`

`` `state MASTER`

`` `interface eth0`

`` `virtual_router_id 52`

`` `priority 100`

`` `advert_int 1`

`` `authentication {`

`` `auth_type PASS`

`` `auth_pass 1111`

`` `}`

`` `virtual_ipaddress {`

`` `192.168.1.88`

`` `}`

`}`

`virtual_server 192.168.1.88 80 {`

`` `delay_loop 6`

`` `lb_algo lc`

`` `#lb_kind DR`

`` `lb_kind TUN`

`` `persistence_timeout 60`

`` `protocol TCP`

`` `real_server 192.168.2.18 80 {`

`` `weight 3`

`` `TCP_CHECK {`

`` `connect_timeout 30`

`` `nb_get_retry 3`

`` `delay_before_retry 2`

`` `connect_port 80`

`` `}`

`` `real_server 192.168.3.68 80 {`

`` `weight 3`

`` `TCP_CHECK {`

`` `connect_timeout 30`

`` `nb_get_retry 3`

`` `delay_before_retry 2`

`` `connect_port 80`

`` `}`

`[root@WEB ~]#`

`[root@WEB ~]# service ipvsadm start`

`[root@WEB ~]# service keepalived start`

`注意：`

`打开转发或关闭，dr/tun模式无影响`

`echo "1" > /proc/sys/net/ipv4/ip_forward`

`二、实际服务器端的操作`

`[root@]# cat /usr/local/vip_tun.sh`

`#!/bin/bash`

`#srcipt to start LVS TUN realserver`

`VIP=192.168.1.88`

`case "$1" in`

`start)`

`#start LVS-TUN real server on this machine`

`/sbin/ifconfig tunl0 down`

`/sbin/ifconfig tunl0 up`

`echo 1 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore`

`echo 2 > /proc/sys/net/ipv4/conf/tunl0/arp_announce`

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

`echo 1 > /proc/sys/net/ipv4/conf/tunl0/forwarding`

`echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore`

`echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce`

`/sbin/ifconfig tunl0 $VIP broadcast $VIP netmask 255.255.255.255 up`

`/sbin/route add -host $VIP dev tunl0`

`;;`

`stop)`

`#stop lvs-TUN real server loopback device`

`/sbin/ifconfig tunl0 down`

`echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_ignore`

`echo 0 > /proc/sys/net/ipv4/conf/tunl0/arp_announce`

`echo 1 > /proc/sys/net/ipv4/conf/tunl0/rp_filter`

`echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore`

`echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce`

`;;`

`status)`

`islothere='/sbin/ifconfig tunl0 |grep $VIP'`

`isrothere='netstat -rn |grep "tunl0"|grep $VIP'`

`if [ ! "$islothere" -o ! "$isrothere" ];then`

`echo "LVS-TUN real server stopped"`

`else echo "LVS-TUN Running"`

`fi`

`;;`

`*)`

`echo "$0: Usage: $0 {start|stop|status}"`

`exit 1`

`;;`

`esac`

`[root@localhost ~]# /usr/local/vip.sh start|stop|status`

`三、lvs查看`

`ipvsadm -ln`

`ipvsadm -lnc`

`ipvsadm -l -n --stats`

`调度算法：rr|wrr|lc|wlc|lblc|lblcr|dh|sh|sed|nq`

LVS + Keepalived之tun模式

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