How to configure the dual-computer hot standby of LVS-DR+Keepalived website server

It is believed that many inexperienced people do not know what to do about how to configure the dual-computer hot standby of LVS-DR+Keepalived website server. therefore, this paper summarizes the causes and solutions of the problem. I hope you can solve this problem through this article.

Keepalived is a software similar to layer3, 4-7 switching mechanism, which is what we usually call layer 3, layer 4 and layer 7 switching. Keepalived is done automatically without human intervention.

Scheduling server:

It needs to be done on the basis of LVS.

Refer to the previous two sections:

LVS-DR: https://blog.51cto.com/13572519/2084197, one of the load balancing clusters

Load balancing Cluster-LVS-NAT: https://blog.51cto.com/13572519/2084181

A network card:

Vmnet1:192.168.80.100

Both the master and slave scheduler do the following three steps: load and install the ipvsadm package

Download address: http://www.keepalived.org/download.html

[root@lss ~] # modprobe ip_vs

[root@lss] # rpm-ivh / mnt/Packages/ipvsadm-1.27-7.el7.x86_64.rpm

-keepalived installation configuration (both master and slave)

[root@lss ~] # yum-y install popt-devel kernel-devel openssl-devel

WinSCP uploads keepalived to master-slave server

[root@lss] # tar fx keepalived-1.4.2.tar.gz-C / opt

[root@lss opt] # cd / opt/keepalived-1.4.2/

[root@lss keepalived-1.4.2] # yum-y install\

Gcc\

Gcc-c++\

Make

[root@lss keepalived-1.4.2] #. / configure-prefix=/

[root@lss keepalived-1.4.2] # make & & make install

[root@lss keepalived] # cp-r / opt/keepalived-1.4.2/keepalived/etc/keepalived/ / etc/init.d

[root@lss keepalived] # systemctl enable keepalived

-- modify the configuration file (main scheduler)-

[root@lss keepalived] # vi / etc/keepalived/keepalived.conf

! Configuration File for keepalived

Global_defs {

Notification_email {acassen@firewall.locbr/ > sysadmin@firewall.loc