搭建高可用、高性能jsp集群

浏览数：29 / 时间：2015年06月09日

一、网络拓扑:

LVS keepalived nginx tomcat 高可用、高性能集群

LVS-DR-MASTER: 192.168.44.129

LVS-DR-SLAVE: 192.168.44.130

LVS-VIP: 192.168.44.200

NGINX1: 192.168.44.131

NGINX2: 192.168.44.132

TOMCAT1: 192.168.44.133

TOMCAT2: 192.168.44.134

目的：搭建高可用、高性能的jsp集群

二、初始化系统

系统环境: CentOS 6.3（定制安装）

组件：

Base

Development Libraries

Development Tools

Editors

Text-based Internet

三、LVS+keeplived

echo "============================ 更新系统时间 ======================"
yum install -y ntp
ntpdate time.windows.com
echo "*/5 * * * * /usr/sbin/ntpdate time.windows.com &>> /var/log/ntp.log" >> /var/spool/cron/root

echo “========================= 安装ipvsadm、keepalived ==================”

[root@LVS-DR-MASTER ~]# yum -y install ipvsadm keepalived

echo “======================= 配置keepalived ===========================”

[root@LVS-DR-MASTER ~]# vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server smtp.yeah.net
# smtp_connect_timeout 30
router_id LVS_DEVEL
}
# VIP1
vrrp_instance VI_1 {
state MASTER #备份服务器上将MASTER改为BACKUP
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 51
priority 100 # 备份服务上将100改为90
advert_int 5
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.44.200
#(如果有多个VIP，继续换行填写.)
}
}
virtual_server 192.168.44.200 80 {
delay_loop 6 #(每隔10秒查询realserver状态)
lb_algo wrr #(lvs 算法)
lb_kind DR #(Direct Route)
persistence_timeout 60 #(同一IP的连接60秒内被分配到同一台realserver)
protocol TCP #(用TCP协议检查realserver状态)
real_server 192.168.44.131 80 {
weight 100 #(权重)
TCP_CHECK {
connect_timeout 10 #(10秒无响应超时)
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.44.132 80 {
weight 100
TCP_CHECK {
connect_timeout 10
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}

[root@LVS-DR-MASTER ~]# /etc/init.d/keepalived start|stop

[root@LVS-DR-MASTER ~]# chkconfig keepalived on

echo “================== 配置realserver（在NGINX服务器上配）=================”

[root@NGINX1 ~]# vim /root/lvs_real.sh

#!/bin/bash
# description: Config realserver
SNS_VIP=192.168.44.200
source /etc/rc.d/init.d/functions
case "$1" in
start)
/sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
/sbin/route add -host $SNS_VIP dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p >/dev/null 2>&1
echo "RealServer Start OK"
;;

stop)
/sbin/ifconfig lo:0 down
/sbin/route del $SNS_VIP >/dev/null 2>&1
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0

[root@NGINX1 ~]# sh /root/lvs_real.sh start

[root@NGINX1 ~]# ifconfig lo:0
lo:0 Link encap:Local Loopback
inet addr:192.168.44.200 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1

[root@NGINX1 ~]# echo "sh /root/lvs_real.sh start &>> /dev/null" >> /etc/rc.local

echo “===================== 测试LVS+keepalived ========================”

#LVS-DR-MASTER、LVS-DR-SLAVE上开启keepalived，LVS-DR-MASTER先绑定VIP

LVS-DR-MASTER：

[root@LVS-DR-MASTER ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:25:b2:e1 brd ff:ff:ff:ff:ff:ff
inet 192.168.44.129/24 brd 192.168.44.255 scope global eth0
inet 192.168.44.200/32 scope global eth0
inet6 fe80::20c:29ff:fe25:b2e1/64 scope link
valid_lft forever preferred_lft forever

LVS-DR-SLAVE：

[root@LVS-DR-SLAVE ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:cc:49:40 brd ff:ff:ff:ff:ff:ff
inet 192.168.44.130/24 brd 192.168.44.255 scope global eth0
inet6 fe80::20c:29ff:fecc:4940/64 scope link
valid_lft forever preferred_lft forever

#解析域名，测试访问，LVS转发

[root@LVS-DR-MASTER ~]# ipvsadm -ln
Every 1.0s: ipvsadm -ln Sun Mar 9 23:33:11 2014

IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.44.200:80 wrr persistent 60
-> 192.168.44.131:80 Route 100 0 0
-> 192.168.44.132:80 Route 100 8216 20005

#测试关闭LVS-DR-MASTER，短暂的掉包后，LVS-DR-SLAVE马上接替工作

LVS-DR-SLAVE接替LVS-DR-MASTER绑定VIP

[root@LVS-DR-SLAVE ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:cc:49:40 brd ff:ff:ff:ff:ff:ff
inet 192.168.44.130/24 brd 192.168.44.255 scope global eth0
inet 192.168.44.200/32 scope global eth0
inet6 fe80::20c:29ff:fecc:4940/64 scope link
valid_lft forever preferred_lft forever

LVS-DR-MASTER 重启完成后，就会自动接回控制权，继续负责转发

#测试关闭其中一台REALSERVER

[root@NGINX1 ~]# nginx -s stop

[root@LVS-DR-MASTER ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.44.200:80 wrr persistent 60
-> 192.168.44.132:80 Route 100 8383 4671

通过上面测试可以知道，当REALSERVER故障或者无法提供服务时，负载均衡器通过健康检查自动把失效的机器从转发队列删除掉，实现故障隔离，保证用户的访问不受影响

#重启被关闭的REALSERVER

当REALSERVER故障恢复后，负载均衡器通过健康检查自动把恢复后的机器添加到转发队列中

四、nginx、tomcat整合

#config NGINX1、NGINX2

#================================ 1、安装tomcat、JDK =================================

#yum -y install apache-tomcat jdk pcre tomcat-native apr apr-util

#查看java版本
java –version

#启动tomcat
#/etc/init.d/tomcat start

#chkconfig tomcat on

#http://localhost:8080，如果看到猫的页面即tomcat和jdk安装成功

#============================= 2、安装Nginx =============================

#yum -y install nginx

#编辑NGINX主配置文件

#vim /etc/nginx/nginx.conf

worker_processes 10;

events {

use epoll;

worker_connections 65550;

}

http {

include mime.types;

default_type application/octet-stream;

sendfile on;

keepalive_timeout 65;

upstream tomcat1{

ip_hash;

server 192.168.44.133:8080;

server 192.168.44.134:8080;

}

upstream tomcat2{

ip_hash;

server 192.168.44.133:8080;

server 192.168.44.134:8080;

}

include vhost/*.conf;

}

#编辑NGINX子配置文件

[root@NGINX1 ~]# cat /etc/nginx/vhost/tomcat1.conf

server {

listen 80;

server_name 192.168.44.133;

charset utf-8;

location / {

root tomcat1;

index index.html index.htm index.jsp;

proxy_pass http://tomcat1/;

}

[root@NGINX1 ~]# cat /etc/nginx/vhost/tomcat2.conf

server {

listen 80;

server_name 192.168.44.134;

charset utf-8;

location / {

root tomcat2;

index index.html index.htm index.jsp;

proxy_pass http://tomcat2/;

}

#检测配置文件
[root@NGINX1 ~]# /etc/init.d/nginx configtest

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: configuration file /etc/nginx/nginx.conf test is successful

[root@NGINX1 ~]# /etc/init.d/nginx start

Starting nginx: [ OK ]

#查看nginx主进程号
#ps -ef | grep "nginx: master process" | grep -v "grep" | awk -F ‘ ‘ ‘{print $2}‘

#停止nginx
[root@NGINX1 ~]# /etc/init.d/nginx stop

Stopping nginx: [ OK ]

#平滑重启
[root@NGINX1 ~]# /etc/init.d/nginx reload

五、配置测试页进行测试

TOMCAT1：

[root@TOMCAT1 ~]# vim /usr/local/tomcat/webapps/tomcat1/index.jsp
<html><body><center>

TOMCAT1 Now time is: <%=new java.util.Date()%>

</center></body></html>

[root@TOMCAT1 ~]# vim /usr/local/tomcat/webapps/tomcat1/WEB-INF/web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>
<display-name>My Web Application</display-name>
<description>
A application for test.
</description>
</web-app>

#TOMCAT1测试页结果

TOMCAT2

[root@TOMCAT2 ~]# vim /usr/local/tomcat/webapps/tomcat2/index.jsp

TOMCAT2 Now time is: <%=new java.util.Date()%>

</center></body></html>

[root@TOMCAT2 ~]# vim /usr/local/tomcat/webapps/tomcat2/WEB-INF/web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<!DOCTYPE web-app

PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

"http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<display-name>My Web Application</display-name>

A application for test.

</description>

</web-app>

#TOMCAT2测试页结果

#================================END =================================

搭建高可用、高性能jsp集群,古老的榕树,5-wow.com

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搭建高可用、高性能jsp集群

搭建高可用、高性能jsp集群

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