nginx做负载均衡+keepalived(做主备)
部署Nginx
一，安装nginx依赖:
查看是否已经安装
rpm -qa |grep gcc
rpm -qa |grep openssl-devel
rpm -qa |grep pcre-devel
rpm -qa |grep zib-devel
安装：
yum -y install 上面的依赖
二，安装nginx
./configuration
make
make install
Configuration summary
+ using system PCRE library
+ OpenSSL library is not used
+ md5: using system crypto library
+ sha1: using system crypto library
+ using system zlib library
nginx path prefix: "/usr/local/nginx"
nginx binary file: "/usr/local/nginx/sbin/nginx"
nginx configuration prefix: "/usr/local/nginx/conf"
nginx configuration file: "/usr/local/nginx/conf/nginx.conf"
nginx pid file: "/usr/local/nginx/logs/nginx.pid"
nginx error log file: "/usr/local/nginx/logs/error.log"
nginx http access log file: "/usr/local/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
/usr/local/nginx/conf/
上传已经配置好的proxy.conf&&nginx.conf
nginx.conf:
#user nobody;
worker_processes 9;
#error_log logs/error.log;
#error_log logs/error.log notice;
error_log logs/error.log error;
pid logs/nginx.pid;
events {
worker_connections 8000;
}
http {
include 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 logs/access.log main;
sendfile on;
#tcp_nopush on;
#keepalive_timeout 0;
keepalive_timeout 65;
#gzip on;
upstream myserver{
#ip_hash;
server 192.168.1.201:9276;
server 192.168.1.201:9277;
server 192.168.1.202:9276;
}
server {
listen 9288;
server_name localhost;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
proxy_pass http://myserver;
proxy_next_upstream http_500 http_503 error timeout invalid_header;
include /usr/local/nginx/conf/proxy.conf;
#root html;
#index index.html index.htm;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# location / {
# root html;
# index index.html index.htm;
# }
#}
# HTTPS server
#
#server {
# listen 443 ssl;
# server_name localhost;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;
# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}
}
红色表示需要根据实际修改的地方！
proxy.conf:
proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
client_body_buffer_size 128k;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
启动：
/usr/local/nginx/sbin/nginx
检查配置文件(修改后是否正确)
/usr/local/nginx/sbin/nginx -t -c /usr/local/nginx/conf/nginx.conf
主从备份：keepalived
tar zxvf keepalived-1.2.7.tar.gz
cd keepalived-1.2.7
./configure
make
make install
cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/sbin/keepalived /usr/sbin/
配置:
/etc/keepalived/keepalived.conf
主：
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 78
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.233
#192.168.1.234
}
}
# delay_loop 2
# lb_algo rr
# lb_kind DR
# nat_mask 255.255.255.0
# persistence_timeout 1
# protocol TCP
# real_server 192.168.1.204 9496 {
# weight 1
# TCP_CHECK {
# connect_timeout 2
# nb_get_retry 2
# delay_before_retry 2
# }
# }
#}
从：
! Configuration File for keepalived
global_defs {
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 78
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.233
#192.168.1.234
}
}
# delay_loop 2
# lb_algo rr
# lb_kind DR
# nat_mask 255.255.255.0
# persistence_timeout 1
# protocol TCP
# real_server 192.168.1.204 9496 {
# weight 1
# TCP_CHECK {
# connect_timeout 2
# nb_get_retry 2
# delay_before_retry 2
# }
# }
#}
/etc/init.d/keepalived start
/etc/init.d/keepalived stop
加入启动服务
echo "/usr/local/nginx/sbin/nginx" >> /etc/rc.local
echo "/etc/init.d/keepalived start" >> /etc/rc.local
这里上传已经好的配置文件：
