Redhat5.8 64位LVS实例环境讲解【一】
一、服务器环境1、拓扑图OS:Redhat 5.864位系统LVS-Master : 192.168.19.60LVS-Backup : 192.168.19.61LVS-VIP : 192.168.19.65Realserver-1 : 192.168.19.62 (Apache)Realserver-2 : 192.168.19.63 (Nginx)Realserver-2 : 192.168.19.64 (IIS)2、安装LVS依赖软件?
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# yum install -y gcc gcc-c++ make openssl-devel kernel-devel
注:系统采用最少化方法安装所有服务器关闭Selinux?
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# vim /etc/sysconfig/selinux
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - SELinux is fully disabled.
SELINUX=disabled
# SELINUXTYPE= type of policy in use. Possible values are:
# targeted - Only targeted network daemons are protected.
# strict - Full SELinux protection.
SELINUXTYPE=targeted
把SELINUX=disabled保存,然后重启服务器即可。二、安装ipvsadm1、建立编译时必须的一个软链接?
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# ln -s /usr/src/kernels/2.6.18-308.el5-x86_64/ /usr/src/linux
(这里如果找不到以上内核目录,是因为kernerl-devel没有装,先去安装上就有了)?
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# ll /usr/src/linux
2、下载 ipvsadm?
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# wget http://www.linuxvirtualserver.or ... ipvsadm-1.24.tar.gz
3、解压缩?
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# tar -zxvf ipvsadm-1.24.tar.gz
# cd ipvsadm-1.24
4、编译安装?
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# make && make install
5、确认安装成功?
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# whereis ipvsadm
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# ipvsadm --version
三、安装keepalived1、下载keepalived?
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# wget http://www.keepalived.org/software/keepalived-1.2.2.tar.gz
2、解压keepalived
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# tar -zxvf keepalived-1.2.2.tar.gz
# cd keepalived-1.2.2
# ./configure
(注意这个步骤要看到以上字样才是正常的)
3、安装?
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# make && make install
如果报错,如图所示这样
注意:把#include linux/types.h /* For __beXX types in userland */移到#include sys/types.h 这行的下面再编译就可以通过了。(这个可能是keepalived版本问题)# vim keepalived/libipvs-2.6/ip_vs.h
4. 配置先看下有没有文件
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# 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/
# chkconfigkeepalived on
# service keepalived restart
查看keepalived进程在不在
5、从 keepalived跟主keepalived服务器同样的安装方法,唯一不同的就是keepalived.conf配置文件不同。
四、keepalived.conf配置文件解释
1、keepalived.conf主配置文件内容
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! Configuration File for keepalived
global_defs {
notification_email {
790028862@qq.com #表示发送通知邮件时邮件源地址是谁
}
notification_email_from 790028862@qq.com
smtp_server 127.0.0.1 #表示发送email时使用的smtp服务器地址,这里可以用本地的sendmail来实现
# smtp_connect_timeout 30 #连接smtp连接超时时间
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER# 备份LB将MASTER改为BACKUP
interface eth0 #实例绑定的网卡,因为在配置虚拟IP的时候必须是在已有的网卡上添加的
virtual_router_id 51#这里设置VRID,这里非常重要,相同的VRID为一个组,他将决定多播的MAC地址
priority 100 # 优先级,备份LB值改为比这个值小
advert_int 1 #检查间隔,默认为1秒
authentication { #这里设置认证
auth_type PASS #认证方式,可以是PASS或AH两种认证方式
auth_pass 1111 #认证密码
}
virtual_ipaddress {
192.168.19.65 # 多个VIP换行写
}
}
virtual_server 192.168.19.65 80 {
delay_loop 6#每隔6秒查询realserver状态
lb_algo wlc # LVS 算法
lb_kind DR# LVS模式 DR是直接路由
persistence_timeout 60 #同一IP连接60秒内分配到同一台realserver
protocol TCP #TCP协议检测realserver状态
real_server 192.168.19.62 80 {
weight 3 #权重
TCP_CHECK {
connect_timeout 10 #10秒无响应超时
nb_get_retry 3 #重连次数
delay_before_retry 3 #重连间隔
connect_port 80 #监控检查的端口
}
}
real_server 192.168.19.63 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.19.64 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
2、keepalived.conf从配置文件内容?
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! Configuration File for keepalived
global_defs {
notification_email {
790028862@qq.com
}
notification_email_from 790028862@qq.com
smtp_server 127.0.0.1
# smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.19.65
}
}
virtual_server 192.168.19.65 80 {
delay_loop 6
lb_algo wlc
lb_kind DR
persistence_timeout 60
protocol TCP
real_server 192.168.19.62 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.19.63 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.19.64 80 {
weight 3
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
到此主从LVS配置完成,下一篇讲物理机的配置(也就是real_server)
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