nginx 负载均衡+keepalived实现双机热备
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部署
ip分配 nginx192.168.1.5主机 192.168.1.6备机 浮动ip192.168.1.7
首先设置浮动ip（主备机器都要设置）
打开网卡eth0 配置好网络参数
复制eth0为eth0:1
修改vim eth0:1
NAME = eth0:1
DEVICE = eth0:1
IPADDR = 192.168.1.7
开启转发
echo "1" > /proc/sys/net/ipv4/ip_forward
修改/etc/sysctl.conf文件，让包转发功能在系统启动时自动生效:
# Controls IP packet forwarding
net.ipv4.ip_forward = 1
重启网络
service network restart
安装keepalived
yum install keepalived -y
修改配置文件
vim /etc/keepalived/keepalived.conf
主机配置情况
global_defs {
notification_email {
#[email protected] 设置报警
}
router_id LVS_DEVEL
}
vrrp_script chk_http_port {
script "</dev/tcp/127.0.0.1/8087"
interval 1
weight -10
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.7
}
track_script {
chk_http_port
}
}
备用机上面配置
global_defs {
notification_email {
#[email protected] 设置报警
}
router_id LVS_DEVEL
}
vrrp_script chk_http_port {
script "</dev/tcp/127.0.0.1/8087"
interval 1
weight -10
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.7
}
track_script {
chk_http_port
}
}
启动查看keepalived情况
killall keepalived
service keepalived start
tail -f /var/log/messages
安装nginx配置转发负载均衡
vim /usr/local/nginx/conf/nginx.conf
添加负载均衡配置
upstream mytest {
#least_conn;
#ip_hash;
server 1.test.com weight=3 max_fails=2 fail_timeout=30s;
server 2.test.com weight=3 max_fails=2 fail_timeout=30s;
server 3.test.com weight=5 max_fails=3 fail_timeout=30s;
}
location ^~/piwik/ {
proxy_pass http://mytest;
}
/usr/local/nginx/sbin/nginx -t
/usr/local/nginx/sbin/nginx
/usr/local/nginx/sbin/nginx -s reload 重新加载配置
本文出自 “[email protected]” 博客，请务必保留此出处http://superleedo.blog.51cto.com/12164670/1934461
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