Nginx+KeepAlive
一、环境：
redhat5.4、keepalived-1.1.17、nginx-1.0.6
主nginx负载均衡器：192.168.0.10
辅nginx负载均衡器：192.168.0.20
vip：192.168.0.100
二、keepalived部署
1.下载最新稳定版 wget http://www.keepalived.org/software/keepalived-1.1.17.tar.gz
2.安装keepalived
tar zxvf keepalived-1.1.17.tar.gz
cd keepalived-1.1.17
./configure –prefix=/usr/local/keepalive
make ; make install
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
3.配置keepalived
#master配置
mkdir /etc/keepalived
vim /etc/keepalived/keepalived.conf
global_defs {
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
#backup ipaddress
mcast_src_ip 192.168.0.20
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass ufsoft
}
virtual_ipaddress {
192.168.0.100
}
}
#backup配置
mkdir /etc/keepalived
vim /etc/keepalived/keepalived.conf
global_defs {
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
#master ipaddress
mcast_src_ip 192.168.0.10
priority 50
advert_int 1
authentication {
auth_type PASS
auth_pass ufsoft
}
virtual_ipaddress {
192.168.0.100
}
}
通过命令：#ip a 来检查
三、安装NGINX
.安装nginx
tar zxf pcre-8.12.tar.gz
cd pcre-8.12
./configure
make;make install
下载下面的插件安装，否则nginx无法识别tomcat中jvmRoute，从而无法达到session复制的效果。
wget http://friendly.sinaapp.com//LinuxSoft/nginx-upstream-jvm-route-0.1.tar.gz
tar xzf nginx-upstream-jvm-route-0.1.tar.gz
tar xzf nginx-1.0.5.tar.gz
cd nginx-1.0.5
patch -p0 <../nginx_upstream_jvm_route/jvm_route.patch
/configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-pcre=/root/pcre-8.12 --add-module=../nginx_upstream_jvm_route/
#--with-pcre=指向的是pcre的源码包
make;make install
2.配置nginx
vim /usr/local/nginx/conf/nginx.conf
#user nobody;
worker_processes 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
pid /usr/local/nginx/logs/nginx.pid;
worker_rlimit_nofile 51200;
events {
worker_connections 5000;
}
http {
upstream backend {
server 192.168.0.20:8080 srun_id=tomcat1; //在tomcat的配置里会配置jvmRoute为tomcat1
server 192.168.0.30:8081 srun_id=tomcat2;
jvm_route $cookie_JSESSIONID|sessionid reverse;
}
include mime.types;
default_type application/octet-stream;
#charset gb2312;
charset UTF-8;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 20m;
limit_rate 1024k;
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-javascript text/css application/xml;
gzip_vary on;
server
{
listen 80;
server_name www.baiying.com;
index index.jsp index.htm index.html;
root /usr/www;
location / {
proxy_pass http://backend;
proxy_redirect off;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}
location ~ .*\.(js|css)?$
{
expires 1h;
}
location /Nginxstatus {
stub_status on;
access_log off;
}
log_format access '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $http_x_forwarded_for';
}
}
"nginx.conf" 83L, 1941C 已写入
[root@slave conf]# /usr/local/bin/nginx.sh stop
[root@slave conf]# /usr/local/bin/nginx.sh start
[root@slave conf]# vim nginx.conf
upstream backend {
server 192.168.0.20:8080 srun_id=tomcat1;
server 192.168.0.30:8080 srun_id=tomcat2;
jvm_route $cookie_JSESSIONID|sessionid reverse;
}
include mime.types;
default_type application/octet-stream;
#charset gb2312;
charset UTF-8;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 20m;
limit_rate 1024k;
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-javascript text/css application/xml;
gzip_vary on;
server
{
listen 80;
server_name www.baiying.com;
index index.jsp index.htm index.html;
root /usr/www;
location / {
proxy_pass http://backend;
proxy_redirect off;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $http_host;
}
location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
{
expires 30d;
}
location ~ .*\.(js|css)?$
{
expires 1h;
}
location /Nginxstatus {
stub_status on;
access_log off;
}
log_format access '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $http_x_forwarded_for';
}
}
3.安装tomcat
1）安装tomcat_1
tar zxf apache-tomcat-6.0.33.tar.gz
mv apache-tomcat-6.0.33/usr/local/tomcat
cp tomcat-replication.jar /usr/local/tomcat/lib
2）安装tomcat_2，步骤同1）
4.分别在tomcat服务器安装jdk
chmod 755 jdk-6u26-linux-i586-rpm.bin
./jdk-6u26-linux-i586-rpm.bin
cat >>/etc/profile <
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH:$HOMR/bin
EOF;
source /etc/profile //使环境变量立即生效
5.tomcat集群配置
tomcat1配置：
修改conf/server.xml配置文件
<Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat1">
notifyListenersOnReplication="true"/>
port="45564"
frequency="500"
dropTime="3000"/>
port="4001"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/>
tomcat2配置：
修改conf/server.xml配置文件
notifyListenersOnReplication="true"/>
port="45564"
frequency="500"
dropTime="3000"/>
port="4000"
autoBind="100"
selectorTimeout="5000"
maxThreads="6"/>
deployDir="/tmp/war-deploy/"
watchDir="/tmp/war-listen/"
watchEnabled="false"/>
6.session配置
修改web应用里面WEB-INF目录下的web.xml文件，加入标签
直接加在之前
开启网卡组播功能：
route add -net 224.0.0.0 netmask 240.0.0.0 dev eth0
7.创建jsp测试页面
在tomcat1安装路径下建立目录test
mkdir /usr/local/tomcat/webapps/ROOT/test/
vi index.jsp
<%
String showMessage="Oh My God 192.168.0.20 华仔!";
out.print(showMessage);
%>
----------------------------
在tomcat2安装路径下建立目录test
mkdir /usr/local/tomcat/webapps/ROOT/test/
vi index.jsp
<%
String showMessage="Oh My God 192.168.0.30 华仔!";
out.print(showMessage);
%>