2臺服務器都安裝nginx 和 keepalived:
[root@keepalived-1 ~]# cat /etc/redhat-release
CentOS release 6.9 (Final)
[root@keepalived-1 ~]# uname -r
2.6.32-696.el6.x86_64
[root@keepalived1 ~]# yum list | grep keepalived
keepalived.x86_64 1.2.13-5.el6_6 base
[root@keepalived1 ~]# yum install -y keepalived
[root@keepalived1 ~]# keepalived -v
Keepalived v1.2.13 (03/19,2015)
雙VIP實例配置
LB01 | LB02 |
[root@lb01 keepalived]# cat -n keepalived.conf 1 ! Configuration File for keepalived 2 3 global_defs { 4 notification_email { 6 } 7 notification_email_from [email protected] 8 smtp_server 127.0.0.1 9 smtp_connect_timeout 30 10 router_id lb01 11 } 12 13 vrrp_instance VI_1 { 14 state MASTER 15 interface eth0 16 virtual_router_id 55 17 priority 150 18 advert_int 1 19 authentication { 20 auth_type PASS 21 auth_pass 1111 22 } 23 virtual_ipaddress { 24 192.168.0.235/24 dev eth0 label eth0:1 25 } 26 } 27 28 vrrp_instance VI_2 { 29 state BACKUP 30 interface eth0 31 virtual_router_id 56 32 priority 100 33 advert_int 1 34 authentication { 35 auth_type PASS 36 auth_pass 1111 37 } 38 virtual_ipaddress { 39 192.168.0.236/24 dev eth0 label eth0:2 40 } 41 } | [root@lb02 keepalived]# cat -n keepalived.conf 1 ! Configuration File for keepalived 2 3 global_defs { 4 notification_email { 6 } 7 notification_email_from [email protected] 8 smtp_server 127.0.0.1 9 smtp_connect_timeout 30 10 router_id lb02 11 } 12 13 vrrp_instance VI_1 { 14 state BACKUP 15 interface eth0 16 virtual_router_id 55 17 priority 100 18 advert_int 1 19 authentication { 20 auth_type PASS 21 auth_pass 1111 22 } 23 virtual_ipaddress { 24 192.168.0.235/24 dev eth0 label eth0:1 25 } 26 } 27 28 vrrp_instance VI_2 { 29 state MASTER 30 interface eth0 31 virtual_router_id 56 32 priority 150 33 advert_int 1 34 authentication { 35 auth_type PASS 36 auth_pass 1111 37 } 38 virtual_ipaddress { 39 192.168.0.236/24 dev eth0 label eth0:2 40 } 41 } |
12.6Nginx 負載均衡配合Keepalived服務器案例
環境：結合第11章的四臺虛擬主機LB01 LB02爲負載均衡，WEB01 WEB02爲網站。
LB01 nginx.conf配置如下：
[root@lb01 conf]# cat -n nginx.conf
1 worker_processes 1;
2
3 events {
4 worker_connections 1024;
5 }
6
7
8 http {
9 include mime.types;
10 default_type application/octet-stream;
11 sendfile on;
12 keepalive_timeout 65;
13 upstream www_server_pools{
14 server192.168.0.233:80 weight=1;
15 server192.168.0.234:80 weight=1;
16 }
17
18
19 server {
20 listen 192.168.0.235:80; （這裏指定的是VIP）
21 server_name www.etiantian.org;
22 location / {
23 proxy_passhttp://www_server_pools;
24 proxy_set_header Host$host;
25 proxy_set_header X-Forwarded-For $remote_addr; （功能暫時不詳）
26 }
27 }
28 }
LB01 keepalived.conf配置如下：
! Configuration File for keepalived
global_defs {
notification_email {
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id lb01
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 55
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.0.235/24 dev eth0 label eth0:1
}
}
LB02 keepalived.conf配置如下：
[root@lb02 keepalived]# vi keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id lb02
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 55
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.0.235/24 dev eth0 label eth0:1
}
}