The installation and configuration process of Nginx+Keepalvied+tomcat cluster

user nobody nobody;

worker_processes 1;

pid /usr/local/nginx/logs/nginx.pid;

worker_rlimit_nofile 51200;

events

{

use epoll;

worker_connections 51200;

}

http {

include mime.types;

default_type application/octet-stream;

server_names_hash_bucket_size 128;

client_header_buffer_size 32k;

large_client_header_buffers 4 32k;

client_max_body_size 8m;

sendfile on;

tcp_nopush on;

keepalive_timeout 60;

tcp_nodelay on;

fastcgi_connect_timeout 300;

fastcgi_send_timeout 300;

fastcgi_read_timeout 300;

fastcgi_buffer_size 64k;

fastcgi_buffers 4 64k;

fastcgi_busy_buffers_size 128k;

fastcgi_temp_file_write_size 128k;

gzip on;

gzip_min_length 1k;

gzip_buffers 4 16k;

gzip_http_version 1.0;

gzip_comp_level 2;

gzip_types text/plain
application/x-avascript text/css application/xml;

gzip_vary on;

upstream backend

{

server 192.168.1.102:8080;

server 192.168.1.103:8080;

server 192.168.1.105:8080;

}

server {

listen 80;

server_name

location / {

root /var/www;

index index.jsp index.htm index.html;

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;

proxy_pass }

#location /nginx {

#access_log on;

#auth_basic “NginxStatus”;

#auth_basic_user_file /usr/local/nginx/htpasswd;

#}

log_format access ‘$remote_addr – $remote_user [$time_local]
“$request”‘

‘$status $body_bytes_sent “$http_referer”‘

‘”$http_user_agent” $http_x_forwarded_for’;

access_log /var/log/access.log access;

}

}

③Install and configure keepalived on the two Nginx machines to make mutual backup between the two machines.

#wget

#tar zxvf keepalived-1.1.15.tar.gz

#cd keepalived-1.1.15

#./configure

#make

#make install

Make keepalived a startup script for easy management:

#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/

#service keepalived start|stop

On the two Nginx, I posted the keepalived.conf configuration file respectively, and after the configuration was completed, use the service keepalived
start starts. To check whether keepalived is successful, you can use the command ip a

vrrp_instance VI_INET1 {

state MASTER

interface eth0

virtual_router_id 53

priority 200

advert_int 1

authentication {

auth_type pass

auth_pass yourpass

}

virtual_ipaddress {

192.168.1.108

}

}

vrrp_instance VI_INET1 {

state BACKUP

interface eth0

virtual_router_id 53

priority 100

advert_int 1

authentication {

auth_type pass

auth_pass yourpass

}

virtual_ipaddress {

192.168.1.108

}

}

After the above three steps are completed, it is the detection. You can stop any service of one of them at will; in the normal results, you should find that after any one of the servers goes down, it will not affect the operation of the entire system.