1、環境：
rhel 6.0+ipvsadm-1.2.6+keepalived-1.2.5
2、安裝

實現LVS/DR最重要的兩個東西是ipvs內核模塊和ipvsadm工具包，現在的系統已經包含ip_vs模塊

1）檢查內核模塊，看一下ip_vs 是否被加載

lsmod |grep ip_vs

ip_vs 35009 0

如果沒有顯示，則說明沒有加載，執行命令 modprobe ip_vs 就可以把ip_vs模塊加載到內核

#modprobe ip_vs 然后再查看就有了。
2）安裝ipvsadm

查看內核版本 #uname -r
2.6.32-71.el6.x86_64

先把目錄/usr/src/kernels/2.6.32-71.el6.x86_64鏈接為/usr/src/linux，命令如下

ln –s /usr/src/2.6.32-71.el6.x86_64 /usr/src/linux

解壓ipvsadm-1.24.tar.gz,執行"make;但是報錯了，類似的錯誤信息大概如下

make -C libipvs
make[1]: Entering directory /usr/src/ipvsadm-1.26/libipvs'<br/>gcc -Wall -Wunused -Wstrict-prototypes -g -fPIC -DLIBIPVS_USE_NL -DHAVE_NET_IP_VS_H -c -o libipvs.o libipvs.c<br/>In file included from libipvs.h:13,<br/>from libipvs.c:23:<br/>ip_vs.h:15:29: error: netlink/netlink.h: No such file or directory<br/>ip_vs.h:16:31: error: netlink/genl/genl.h: No such file or directory<br/>ip_vs.h:17:31: error: netlink/genl/ctrl.h: No such file or directory<br/>In file included from libipvs.h:13,<br/>from libipvs.c:23:<br/>ip_vs.h:520: error: array type has incomplete element type<br/>ip_vs.h:521: error: array type has incomplete element type<br/>libipvs.c:57: warning: implicit declaration of function ‘nlmsg_alloc’<br/>libipvs.c:57: warning: assignment makes pointer from integer without a cast<br/>libipvs.c:61: warning: implicit declaration of function ‘genlmsg_put’<br/>libipvs.c:61: error: ‘NL_AUTO_PID’ undeclared (first use in this function)<br/>libipvs.c:61: error: (Each undeclared identifier is reported only once<br/>libipvs.c: In function ‘ipvs_add_service’:<br/>libipvs.c:255: error: too many arguments to function ‘ipvs_nl_send_message’<br/>libipvs.c: In function ‘ipvs_update_service’:<br/>libipvs.c:276: error: too many arguments to function ‘ipvs_nl_send_message’<br/>libipvs.c: In function ‘ipvs_del_service’:<br/>libipvs.c:296: error: too many arguments to function ‘ipvs_nl_send_message’<br/>libipvs.c: In function ‘ipvs_zero_service’:<br/>libipvs.c:473: warning: assignment makes pointer from integer without a cast<br/>libipvs.c:483: error: too many arguments to function ‘ipvs_nl_send_message’<br/>libipvs.c: In function ‘ipvs_stop_daemon’:<br/>libipvs.c:504: warning: assignment makes pointer from integer without a cast<br/>libipvs.c:514: error: too many arguments to function ‘ipvs_nl_send_message’<br/>libipvs.c: At top level:<br/>libipvs.c:1051: error: ‘NL_OK’ undeclared (first use in this function)<br/>libipvs.c: In function ‘ipvs_get_daemon’:<br/>libipvs.c:1071: error: ‘NLM_F_DUMP’ undeclared (first use in this function)<br/>libipvs.c:1072: error: too many arguments to function ‘ipvs_nl_send_message’<br/>make[1]: *** [libipvs.o] Error 1<br/>make[1]: Leaving directory/usr/src/ipvsadm-1.26/libipvs'
make: *** [libs] Error 2

解決：yum install libnl libpopt

再次make，還是有報錯
類似如 /usr/src/ipvsadm-1.26/ipvsadm.c:667: undefined reference to poptStrerror'<br/>/usr/src/ipvsadm-1.26/ipvsadm.c:667: undefined reference topoptBadOption'
/usr/src/ipvsadm-1.26/ipvsadm.c:670: undefined reference to poptFreeContext'<br/>/usr/src/ipvsadm-1.26/ipvsadm.c:677: undefined reference topoptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:678: undefined reference to poptGetArg'<br/>/usr/src/ipvsadm-1.26/ipvsadm.c:679: undefined reference topoptGetArg'
/usr/src/ipvsadm-1.26/ipvsadm.c:690: undefined reference to poptGetArg'<br/>/usr/src/ipvsadm-1.26/ipvsadm.c:693: undefined reference topoptFreeContext'
collect2: ld returned 1 exit status
make: *** [ipvsadm] Error 1

解決：yum install 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make通過，然后make instll 完成安裝

3）安裝keepalived

keepalived下載
http://www.keepalived.org/software/keepalived-1.2.5.tar.gz

解壓 & ./configure & make & make install 完成安裝。

轉載于:https://blog.51cto.com/5294868/2126681

總結

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