在Debian系统上实现Apache的高可用性,通常涉及以下几种技术和方法:
sudo apt-get install keepalived -y
/etc/keepalived/keepalived.conf
文件,配置VRRP实例和虚拟IP地址。vrrp_instance VI_1 {
state MASTER
interface ens160
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.10.252/24
}
}
/etc/keepalived/check_httpd.sh
,用于检查Apache服务进程。#!/bin/bash
if pgrep httpd > /dev/null; then
true
else
systemctl stop keepalived
fi
sudo systemctl start keepalived
sudo systemctl enable keepalived
sudo apt-get install haproxy -y
/etc/haproxy/haproxy.cfg
文件,定义后端服务器和负载均衡策略。frontend apache_front
bind *:80
default_backend apache_backend_servers
backend apache_backend_servers
balance roundrobin
server backend01 192.168.1.10:80 check
server backend02 192.168.1.11:80 check
sudo systemctl start haproxy
sudo systemctl enable haproxy
vrrp_instance VI_1 {
state MASTER
interface ens160
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.10.252/24
}
}
通过上述方法,可以在Debian系统上实现Apache的高可用性,确保在服务器故障时,服务能够自动切换到备用服务器,保证系统的连续性和稳定性。