keekalived+nginx 高可用
Posted john5的博客
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高可用环境准备
后端服务器主配置文件
[[email protected]~]#cat /etc/nginx/nginx.conf
user www;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
?
log_format main ‘$remote_addr - $remote_user [$time_local] "$request" ‘
‘$status $body_bytes_sent "$http_referer" ‘
‘"$http_user_agent" "$http_x_forwarded_for"‘;
?
access_log /var/log/nginx/access.log main;
sendfile on;
#tcp_nopush on;
keepalive_timeout 65;
gzip on;
include /etc/nginx/conf.d/www.conf;
include /etc/nginx/conf.d/bbs.conf;
}
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后端服务器站点目录文件
[[email protected]~]#cat /etc/nginx/conf.d/bbs.conf
server {
????listen 80;
????index index.html;
????server_name bbs.etiantian.org;
location / {
????root html/bbs;
????index index.html;
}????
}
?
?
?
[[email protected]~]#cat /etc/nginx/conf.d/www.conf
server {
????listen 80;
????index index.html;
????server_name www.etiantian.org;
location / {
????root html/www;
????index index.html;
}????
}
?
后端服务器网页文件
[[email protected]~]#cat /etc/nginx/html/www/bingbing.html
www web01
[[email protected]~]#cat /etc/nginx/html/bbs/bingbing.html
bbs web01
?
2台lb 前端配置
nginx负载均衡配置
[[email protected] ~]# cat /etc/nginx/nginx.conf
worker_processes 1;
events {
worker_connections 1024;
}
http {
include mime.types;
gzip on;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
log_format main ‘$remote_addr - $remote_user [$time_local] "$request" ‘
‘$status $body_bytes_sent "$http_referer" ‘
‘"$http_user_agent" "$http_x_forwarded_for"‘;
?
access_log /var/log/nginx/access.log main;
upstream spool {
server 192.168.2.7:80 weight=1 max_conns=2999 max_fails=1 fail_timeout=3s;
server 192.168.2.8:80 weight=1 max_conns=4000 max_fails=2 fail_timeout=3s;
}
server {
listen 192.168.2.3:80;
server_name www.eitantian.org;
location / {
proxy_pass http://spool;
???? include proxy.conf;
}
}
server {
listen 192.168.2.4:80;
server_name bbs.etiantian.org;
location / {
proxy_pass http://spool;
???? include proxy.conf;
}
}
}
?
keepailved配置双主配置
lb01 keepalived配置
[[email protected] ~]# cat /etc/keepalived/keepalived.conf
[[email protected] ~]# cat /etc/keepalived/keepalived.conf
global_defs {
router_id lb01
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.2.3/24 dev eth0 label eth0:3
}
}
?
vrrp_script chk_nginx_proxy {
script "/server/scripts/chk_nginx_proxy.sh"
interval 2
weight 2
}
vrrp_instance VI_2 {
state BACKUP
interface eth0
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.2.4/24 dev eth0 label eth0:4
}
track_script {
chk_nginx_proxy
}
}
lb 02 keepalived 配置
[[email protected] scripts]# cat /etc/keepalived/keepalived.conf
global_defs {
router_id lb02
}
?
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.2.3/24 dev eth0 label eth0:3
}
}
vrrp_script chk_nginx_proxy {
script "/server/scripts/chk_nginx_proxy.sh"
interval 2
weight 2
}
?
vrrp_instance VI_2 {
state MASTER
interface eth0
virtual_router_id 52
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.2.4/24 dev eth0 label eth0:4
}
track_script {
chk_nginx_proxy
}
}
让内核识别网卡ip
[[email protected] ~]# echo ‘net.ipv4.ip_nonlocal_bind = 1‘ >>/etc/sysctl.conf
[[email protected] ~]# sysctl -p
前端解析
[[email protected] ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.2.3 www.eitantian.org
192.168.2.4 bbs.eitantian.org
?
windows本地解析
192.168.2.3 www.etiantian.org
192.168.2.4 bbs.etiantian.org
?
测试:因为是高可用
[[email protected] ~]# curl -H Host:www.etiantian.org 192.168.2.3/bingbing.html
www web01
[[email protected] ~]# curl -H Host:www.etiantian.org 192.168.2.3/bingbing.html
www web01
[[email protected] ~]# curl -H Host:bbs.etiantian.org 192.168.2.4/bingbing.html
bbs web01
[[email protected] ~]# curl -H Host:bbs.etiantian.org 192.168.2.4/bingbing.html
bbs web01
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