centos下源码安装LVS+ Keepalived

LVS安装

ipvsadm配置过程中链接文件下无内核，先配置出内核

cdusr/src/kernel/

[root@bogonkernels]# rpm -qa|grep kernel

kernel-headers-2.6.18-194.el5

kernel-2.6.18-194.el5

[root@bogonkernels]# yum -y install kernel-devel

 

1）检查内核模块，看一下ip_vs 是否被加载 

# lsmod |grep ip_vs 

 

ip_vs    35009    0 
如果没有显示，则说明没有加载，执行命令 modprobe ip_vs 就可以把ip_vs模块加载到内核 

#modprobe ip_vs   然后再查看就有了。
2）安装ipvsadm 
 
查看内核版本   #uname -r  
 2.6.32-573.1.1.el6.i686

 

先把目录/usr/src/kernels/2.6.32-573.1.1.el6.i686链接为/usr/src/linux，命令如下 

ln -s/usr/src/kernels/2.6.32-573.1.1.el6.i686 /usr/src/linux

 

在usr/local/下解压ipvsadm的安装包

[root@localhost ~]# cd /usr/local/

[root@localhost local]# tar –zxvf ipvsadm-1.24.tar.gz

[root@localhost local]# cd ipvsadm-1.24

[root@localhost ipvsadm-1.24]# make

解压ipvsadm-1.24.tar.gz,执行"make;但是报错了，类似的错误信息大概如下
make -C libipvs
make[1]: Entering directory`/usr/src/ipvsadm-1.26/libipvs'
gcc -Wall -Wunused -Wstrict-prototypes -g -fPIC-DLIBIPVS_USE_NL  -DHAVE_NET_IP_VS_H -c -o libipvs.o libipvs.c
In file included from libipvs.h:13,
                from libipvs.c:23:
ip_vs.h:15:29: error: netlink/netlink.h: Nosuch file or directory
ip_vs.h:16:31: error: netlink/genl/genl.h: Nosuch file or directory
ip_vs.h:17:31: error: netlink/genl/ctrl.h: Nosuch file or directory
In file included from libipvs.h:13,
                from libipvs.c:23:
ip_vs.h:520: error: array type has incompleteelement type
ip_vs.h:521: error: array type has incompleteelement type
libipvs.c:57: warning: implicit declaration offunction ‘nlmsg_alloc’
libipvs.c:57: warning: assignment makes pointerfrom integer without a cast
libipvs.c:61: warning: implicit declaration offunction ‘genlmsg_put’
libipvs.c:61: error: ‘NL_AUTO_PID’ undeclared(first use in this function)
libipvs.c:61: error: (Each undeclaredidentifier is reported only once
libipvs.c: In function ‘ipvs_add_service’:
libipvs.c:255: error: too many arguments tofunction ‘ipvs_nl_send_message’
libipvs.c: In function ‘ipvs_update_service’:
libipvs.c:276: error: too many arguments tofunction ‘ipvs_nl_send_message’
libipvs.c: In function ‘ipvs_del_service’:
libipvs.c:296: error: too many arguments tofunction ‘ipvs_nl_send_message’
libipvs.c: In function ‘ipvs_zero_service’:
libipvs.c:473: warning: assignment makespointer from integer without a cast
libipvs.c:483: error: too many arguments to function‘ipvs_nl_send_message’
libipvs.c: In function ‘ipvs_stop_daemon’:
libipvs.c:504: warning: assignment makespointer from integer without a cast
libipvs.c:514: error: too many arguments tofunction ‘ipvs_nl_send_message’
libipvs.c: At top level:
libipvs.c:1051: error: ‘NL_OK’ undeclared(first use in this function)
libipvs.c: In function ‘ipvs_get_daemon’:
libipvs.c:1071: error: ‘NLM_F_DUMP’ undeclared(first use in this function)
libipvs.c:1072: error: too many arguments tofunction ‘ipvs_nl_send_message’
make[1]: *** [libipvs.o] Error 1
make[1]: Leaving directory`/usr/src/ipvsadm-1.26/libipvs'
make: *** [libs] Error 2
 
解决：[root@localhost ipvsadm-1.24]#yum install libnl* libpopt*

再次make，还是有报错
类似如 /usr/src/ipvsadm-1.26/ipvsadm.c:667: undefined reference to `poptStrerror'
/usr/src/ipvsadm-1.26/ipvsadm.c:667: undefinedreference to `poptBadOption'
/usr/src/ipvsadm-1.26/ipvsadm.c:670: undefinedreference to `poptFreeContext'
/usr/src/ipvsadm-1.26/ipvsadm.c:677: undefinedreference to `poptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:678: undefinedreference to `poptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:679: undefinedreference to `poptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:690: undefinedreference to `poptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:693: undefinedreference to `poptFreeContext'
collect2: ld returned 1 exit status
make: *** [ipvsadm] Error 1
 
解决：[root@localhost ipvsadm-1.24]# yuminstall    popt-static （ftp://ftp.muug.mb.ca/mirror/centos/6.3/os/x86_64/Packages/popt-static-1.13-7.el6.x86_64.rpm）
再次

[root@localhost ipvsadm-1.24]# make

通过，然后

[root@localhost ipvsadm-1.24]# makeinstll 

 完成安装

 

 

 

安装 配置keepalived 

 

./configure会出现OPENSSL错误，

所以首先

[root@localhost~]#yum install -y openssl openssl-devel

 

然后执行下面的命令：

[root@localhost~]# cd /usr/local

[root@localhostlocal]# tar –zxvf keepalived-1.2.18.tar.gz

[root@localhostlocal]# cd keepalived-1.2.18

[root@localhostkeepalived-1.2.18]# ./configure

[root@localhostkeepalived-1.2.18]# make

[root@localhostkeepalived-1.2.18]# make install

完成安装

 

配置keepalived

 

# 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/

(1)在DR1上配置keepalived:

最简单的方法：先在本地记事本中，手工创建keepalived.conf。上传到/etc/keepalived/keepalived.conf中，替换原有即可！

!Configuration File for keepalived

global_defs{

   notification_email {

     acassen@firewall.loc   #设置报警邮件地址,可以设置多个,每行1个，

     failover@firewall.loc  #需开启邮件报警及本机的Sendmail服务。

     sysadmin@firewall.loc

   }

   notification_email_fromAlexandre.Cassen@firewall.loc

   smtp_server 192.168.200.1  #设置SMTPServer地址；

   smtp_connect_timeout 30

   router_id LVS_DEVEL

}

           ########VRRP Instance########

vrrp_instanceVI_1 {

    state MASTER    #指定Keepalived的角色，MASTER为主机服务器，BACKUP为备用服务器

    interface eth0  #BACKUP为备用服务器

    virtual_router_id 51

    priority 100    #定义优先级，数字越大，优先级越高，主DR必须大于备用DR。

    advert_int 1

    authentication {

        auth_type PASS  #设置验证类型，主要有PASS和AH两种

        auth_pass 1111  #设置验证密码

    }

    virtual_ipaddress {

        192.168.0.200  #设置主DR的虚拟IP地址(virtualIP),可多设，但必须每行1个

    }

}

           ########Virtual Server########

virtual_server192.168.0.200 80 {  #注意IP地址与端口号之间用空格隔开

    delay_loop 6        #设置健康检查时间，单位是秒

    lb_algo rr          #设置负载调度算法，默认为rr,即轮询算法,最优秀是wlc算法

    lb_kind DR          #设置LVS实现LB机制，有NAT、TUNN和DR三个模式可选

    nat_mask 255.255.255.0

    persistence_timeout 50  #会话保持时间，单位为秒

    protocol TCP        #指定转发协议类型，有TCP和UDP两种

    real_server 192.168.0.181 80 {

        weight 1          #配置节点权值，数字越大权值越高

        TCP_CHECK {

            connect_timeout 3     #表示3秒无响应，则超时

            nb_get_retry 3        #表示重试次数

            delay_before_retry 3  #表示重试间隔

        }

    }

    real_server 192.168.0.141 80 {  #配置服务器节点，即Real Server2的public IP

        weight 3            #配置节点权值，数字越大权值越高

        TCP_CHECK {

            connect_timeout 3       #表示3秒无响应，则超时

            nb_get_retry 3          #表示重试次数

            delay_before_retry 3    #表示重试间隔

        }

    }

}//启动哈keepalived、设置keepalived服务自动启动、检查是否生效，如下图所示：

(2)在DR2上配置keepalived:

先将上面记事本中的keepalived.conf配置文件，仅仅修改2处，如下图所示：

No.1处：把“stateMASTER”修改为“stateBACKUP” #即备用服务器；

No.2处：把“priority 100”修改为“priority 90” #优先级为90。

修改好后，复制到DR2的/etc/keepalived/keepalived.conf中，保存即可！

//启动哈keepalived、设置keepalived服务自动启动、检查是否生效，如下图所示：

 参考文章：http://beyondhdf.blog.51cto.com/229452/1331874

http://www.07net01.com/linux/ipvsadm_keepalivedanzhuangcuowujiejue_73067_1361863388.html

http://rensanning.iteye.com/blog/2202718