Install HAProxy to configure Load Balancing Server.
[1] Install HAProxy.
[root@futurelinux ~]# dnf install haproxy -y
[2] Configure HAProxy.
[root@futurelinux ~]# vi /etc/haproxy/haproxy.cfg
#---------------------------------------------------------------------
# Example configuration for a possible web application. See the
# full configuration options online.
#
...
...
# comment out all for existing [frontend ***] [backend ***] sections
# and add follows to the end
# define frontend ( any name is OK for [http-in] )
frontend http-in
# listen 80 port
bind *:80
# set default backend
default_backend backend_servers
# send X-Forwarded-For header
option forwardfor
# define backend
backend backend_servers
# balance with roundrobin
balance roundrobin
# define backend servers
server node01 10.0.0.51:80 check
server node02 10.0.0.52:80 check
[root@futurelinux ~]# systemctl enable haproxy
Created symlink /etc/systemd/system/multi-user.target.wants/haproxy.service β /usr/lib/systemd/system/haproxy.service.
[root@futurelinux ~]# systemctl start haproxy
[3] If Firewalld is running, allow ports HAProxy listens.
[root@futurelinux ~]# firewall-cmd --permanent --add-service=http
success
[root@futurelinux ~]# firewall-cmd --reload
success