Session Sticky
ginx hmux與resin(3.0版本) session sticky的結(jié)合
下載:svn checkout http://nginx-upstream-jvm-route.googlecode.com/svn/trunk/ nginx-upstream-jvm-route-read-only
(暫時(shí)不要從download中下載session stick代碼,有bug)
wget http://nginx-hmux-module.googlecode.com/files/nginx_hmux_module_v0.2.tar.gz
打補(bǔ)丁
patch -p1 <hmux/hmux.patch
patch -p0 <nginx-upstream-jvm-route-read-only/jvm_route.patch
./configure --add-module=hmux/ --add-module=/home/wangbin/work/memcached/keepalive/
--add-module=nginx-upstream-jvm-route-read-only/ --with-debug
在obj/Makefile中去掉優(yōu)化參數(shù)
make
make install
修改resin.conf(每臺(tái)機(jī)器都要設(shè)置)
? ? ? ? 實(shí)例a:
? ? ? ? <http server-id="a" host="61.135.250.217" port="18080"/>
? ? ? ? <cluster>
? ? ? ? ? ? ? ? <srun server-id="a" host="61.135.250.217" port="6800"/>
? ? ? ? ? ? ? ? <srun server-id="b" host="61.135.250.217" port="6801"/>
? ? ? ? </cluster>
? ? ? ?
? ? ? ? 實(shí)例b:
? ? ? ? <http server-id="b" host="61.135.250.217" port="18081"/>
? ? ? ? <cluster>
? ? ? ? ? ? ? ? <srun server-id="a" host="61.135.250.217" port="6800"/>
? ? ? ? ? ? ? ? <srun server-id="b" host="61.135.250.217" port="6801"/>
? ? ? ? </cluster> ? ? ?
? ? ? ?
啟動(dòng)resin:
? ? ? ? sh httpd.sh -server a start
? ? ? ? sh httpd.sh -server b start
修改nginx.conf
? ? upstream resins{
? ? ? ? server 61.135.250.217:6800 srun_id=a;
? ? ? ? server 61.135.250.217:6801 srun_id=b;
? ? ? ? jvm_route $cookie_JSESSIONID;
? ? ? ? keepalive 1024;
? ? }
? ?
? ? server {
? ? ? ? location ?/{
? ? ? ? ? ? hmux_pass resins;
? ? ? ? }
? ? }
? ?
啟動(dòng)nginx
hmux_session_sticky???
?
?
http://www.blogjava.net/gentoo1439/archive/2007/07/11/129527.html
Apache+Tomcat關(guān)于Session Sticky的負(fù)載均衡
選取Apache HTTP Server作為前端的負(fù)載服務(wù)器,后端選取兩個(gè)Tomcat作集群,此次選擇的配置方式為Session Sticky(粘性Session),這種方式將同一用戶的請(qǐng)求轉(zhuǎn)發(fā)到特定的Tomcat服務(wù)器上,避免了集群中Session的復(fù)制,缺點(diǎn)是用戶只跟一種的一臺(tái)服務(wù)器通信,如果此服務(wù)器down掉,那就廢了。
采用的model為mod_proxy_ajp.so,整個(gè)配置在tomcat的配置文件中都有相關(guān)的注釋,只需作相應(yīng)修改就OK。
我們選取的是Apache HTTP Server2.2.4,Tomcat5.5.16。
首先安裝Apache HTTP Server,然后修改其配置文件http.conf,首先load三個(gè)model,代碼如下:
LoadModule?proxy_ajp_module?modules/mod_proxy_ajp.so
LoadModule?proxy_balancer_module?modules/mod_proxy_balancer.so 然后在此配置文件末端加入以下代碼:
ProxyPass?/?balancer://tomcatcluster/?lbmethod=byrequests?stickysession=JSESSIONID?nofailover=Off?timeout=5?maxattempts=3??
ProxyPa***everse?/?balancer://tomcatcluster/???
??
<Proxy?balancer://tomcatcluster>??
BalancerMember?ajp://localhost:8009?route=a??
BalancerMember?ajp://localhost:9009?route=b
</Proxy>?
以上代碼配置了Proxy的相關(guān)參數(shù),<Proxy>模塊定義了均衡負(fù)載的配置,其中兩個(gè)Tomcat Server都配置在同一臺(tái)服務(wù)器上,端口分別為8009、9009,并配置各自的route,這樣Apache Server就能根據(jù)route將請(qǐng)求轉(zhuǎn)發(fā)給特定的Tomcat。
接下來修改Tomcat的server.xml文件,如下:
<!--?Define?an?AJP?1.3?Connector?on?port?8009?-->
????<Connector?port="8009"?
???????????????enableLookups="false"?redirectPort="8443"?protocol="AJP/1.3"?/> 其中的port為前面<Proxy>中設(shè)定的端口,還要配置其route,代碼如下:
<!--?Define?the?top?level?container?in?our?container?hierarchy?-->
????<Engine?name="Catalina"?defaultHost="localhost"?jvmRoute="a"> jvmRoute也須同前面的設(shè)置一樣。?
下面用JMeter對(duì)配置后的負(fù)載均衡做一測(cè)試,首先先啟動(dòng)兩個(gè)Tomcat Server,隨后啟動(dòng)Apache Server,在JMeter中新建測(cè)試計(jì)劃,在兩個(gè)Tomcat Server中的jsp-examples下新建test.jsp(此jsp自己隨便寫兩句就成),然后進(jìn)行測(cè)試,以下是部分取樣器結(jié)果:
HTTP?response?headers:
HTTP/1.1?200?OK
Date:?Wed,?11?Jul?2007?02:17:55?GMT
Set-Cookie:?JSESSIONID=AC7EF1CAA8C6B0FEB68E77D7D375E2AF.b;?Path=/jsp-examples
Content-Type:?text/html;charset=ISO-8859-1
Content-Length:?3
Keep-Alive:?timeout=5,?max=79
Connection:?Keep-Alive 以上紅色代碼表示用戶的http請(qǐng)求中的JSESSIONID中已經(jīng)附帶了route后綴,.b表示此請(qǐng)求將轉(zhuǎn)發(fā)到route為b的Tomcat Server上,你將會(huì)發(fā)現(xiàn)其中的一部分請(qǐng)求的JSESSIONID后綴為.a,也就是轉(zhuǎn)發(fā)給route為a的Tomcat Server上
-------------------------------------
http://blog.sina.com.cn/s/blog_5dc960cd0100ipgt.html
nginx+resin(tomcat)?session?問題解決
?(2010-05-19 09:34:07) 轉(zhuǎn)載▼標(biāo)簽:? it?雜談 | ? |
在web服務(wù)器中需要中修改配置:
resion中:
shell $> vim resin.conf
##??查找?????<http address="*" port="8080"/>
## 注釋掉 <!--http address="*" port="8080"/-->
## 查找??????<server id="" address="127.0.0.1" port="6800">
## 替換成???
????<server id="a" address="192.168.6.121" port="6800">
????<!-- server2 address=192.168.6.162 -->
????<http id="" port="8080"/>
????</server>
????<server id="b" address="192.168.6.121" port="6801">
????<!-- server2 address=192.168.6.162 -->
????<http id="" port="8081"/>
????</server>
tomcat中:(經(jīng)過試驗(yàn)確認(rèn),虛擬主機(jī)也支持,只需按下面修改一次即可)
設(shè)置tomcat的server.xml, 在兩臺(tái)服務(wù)器的tomcat的配置文件中分別找到:
<Engine name="Catalina" defaultHost="localhost" >
分別修改為:
Tomcat01:(192.168.0.100)
<Engine name="Catalina" defaultHost="localhost" jvmRoute="a">
Tomcat02:(192.168.0.101)
<Engine name="Catalina" defaultHost="localhost" jvmRoute="b">
nginx的修改:
nginx_upstream_jvm_route 是一個(gè) Nginx 的擴(kuò)展模塊,用來實(shí)現(xiàn)基于 Cookie 的 Session Sticky 的功能。
安裝方法:
1.先獲得nginx_upstream_jvm_route模塊:
地址:http://sh0happly.blog.51cto.com/p_w_upload/201004/1036375_1271836572.zip,解壓后上傳到/root下
2.進(jìn)入Nginx源碼目錄:
cd nginx-0.7.61
patch -p0 < ../nginx-upstream-jvm-route/jvm_route.patch
會(huì)出現(xiàn)以下提示:
patching file src/http/ngx_http_upstream.c
Hunk #1 succeeded at 3869 (offset 132 lines).
Hunk #3 succeeded at 4001 (offset 132 lines).
Hunk #5 succeeded at 4100 (offset 132 lines).
patching file src/http/ngx_http_upstream.h
3.安裝nginx:
shell $> ./configure??--prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --add-module=/root/nginx-upstream-jvm-route/
shell $> make
shell $> make install
4.修改配置,例如:
1.For resin
upstream backend {
????server 192.168.0.100 srun_id=a;???#這里srun_id=a對(duì)應(yīng)的是 server1??resin配置里的 server id="a"
????server 192.168.0.101 srun_id=b;
????jvm_route $cookie_JSESSIONID|sessionid;
}
2.For tomcat
upstream tomcat {
server 192.168.0.100:8080 srun_id=a;??#這里srun_id=a對(duì)應(yīng)的是 tomcat01 配置里的 jvmRoute="a"
server 192.168.0.101:8080 srun_id=b;??#這里srun_id=a對(duì)應(yīng)的是 tomcat02 配置里的 jvmRoute="b"
jvm_route $cookie_JSESSIONID|sessionid reverse;
}
???
server {
server_name??test.com;
charset utf-8,GB2312;
index??index.html;
if (-d $request_filename) {
rewrite ^/(.*)([^/])$ http://$host/$1$2/ permanent;
}
location / {
proxy_pass http://tomcat/;
proxy_redirect????off;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host;
}
在兩臺(tái)的tomcat上增加配置:
??????<Host name="test.com" debug="0" appBase="/usr/local/tomcat/apps/" unpackWARs="true" >
?????????<Logger className="org.apache.catalina.logger.FileLogger" directory="logs"?prefix="crm_log." suffix=".txt" timestamp="true"/>
?????????<Context path="" docBase="/usr/local/tomcat/apps/jsp" reloadable="true" debug="0" crossContext="false">
?????????</Context>
??????</Host>
在/usr/local/tomcat/apps/jsp的下面新增index.jsp
<HTML>
<HEAD>
<TITLE>JSP TESTPAGE</TITLE>
</HEAD>
<BODY>
<%
String name=request.getParameter("name");
out.println("<h1>this is 192.168.0.100:hello "+name+"!<br></h1>");??#或192.168.0.101
%>
</BODY>
</HTML>
通過訪問:http://test.com,頁面會(huì)一直保持在192.168.0.100的頁面,當(dāng)清空cookies和session后,再次刷新,頁面會(huì)保持在192.168.0.101上。
一個(gè)實(shí)例:http://hi.baidu.com/scenkoy/blog/item/2cd89da9b57696f71e17a29e.html
測(cè)試環(huán)境:
server1???服務(wù)器上安裝了 nginx + tomcat01
server2 服務(wù)器上只安裝了 tomcat02????????
server1 IP 地址: 192.168.2.88
server2 IP 地址: 192.168.2.89
安裝步驟:
1. 在server1 上安裝配置 nginx + nginx_upstream_jvm_route
shell $> wget -c http://sysoev.ru/nginx/nginx-0.7.61.tar.gz
shell $> svn checkout http://nginx-upstream-jvm-route.googlecode.com/svn/trunk/ nginx-upstream-jvm-route-read-only
shell $> tar zxvf nginx-0.7.61
shell $> cd nginx-0.7.61
shell $> patch -p0 < ../nginx-upstream-jvm-route-read-only/jvm_route.patch
shell $> useradd www
shell $> ./configure --user=www --group=www --prefix=/usr/local//nginx --with-http_stub_status_module --with-http_ssl_module --add-module=/root/nginx-upstream-jvm-route-read-only
shell $> make
shell $> make install
2.分別在兩臺(tái)機(jī)器上安裝 tomcat和java (略)
設(shè)置tomcat的server.xml, 在兩臺(tái)服務(wù)器的tomcat的配置文件中分別找到:
<Engine name="Catalina" defaultHost="localhost" >
分別修改為:
Tomcat01:
<Engine name="Catalina" defaultHost="localhost" jvmRoute="a">
Tomcat02:
<Engine name="Catalina" defaultHost="localhost" jvmRoute="b">
并在webapps下面建立aa文件夾,在里面建立要測(cè)試的index.jsp文件,內(nèi)容如下:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
%>
<html>
<head>
????</head>
??????<body>
???????88
???????<!--server1 這里為 88 -->
????????<br />
???????<%out.print(request.getSession()) ;%>
???????<!--輸出session-->
????????<br />
????????<%out.println(request.getHeader("Cookie")); %>
??????<!--輸出Cookie-->
??????</body>
</html>
兩個(gè)tomcat一樣只需要修改紅色的部分
分別啟動(dòng)兩個(gè)tomcat
3.設(shè)置nginx
shell $> cd /usr/local/nginx/conf
shell $> mv nginx.conf nginx.bak
shell $> vi nginx.conf
## 以下是配置 ###
user www www;
worker_processes 4;
error_log logs/nginx_error.log crit;
pid????????/usr/local/nginx/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 51200;
events
{
use epoll;
worker_connections 2048;
}
http
{
upstream backend {
????server 192.168.2.88:8080 srun_id=a;
???server 192.168.2.89:8080 srun_id=b;
???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;
#limit_zone crawler $binary_remote_addr 10m;
server
{
???listen???????80;
???server_name 192.168.2.88;
???index index.html index.htm index.jsp;
???root /var/www;
???#location ~ .*\.jsp$
???location / aa/
{
?????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';
# access_log off;
}
}
4.測(cè)試
打開瀏覽器,輸入:http://192.168.2.88/aa/
刷新了N次還都是88,也就是補(bǔ)丁起作用了,cookie 值也獲得了,為了測(cè)試,我又打開了“遨游瀏覽器”(因?yàn)閟ession 和 cookie問題所以從新打開別的瀏覽器),輸入網(wǎng)址:
http://192.168.2.88/aa/
顯示89,刷新N次后還是89,大家測(cè)試的時(shí)候如果有疑問可一把 nginx 配置文件的
srun_id=a srun_id=b 去掉,然后在訪問,就會(huì)知道頁面是輪詢?cè)L問得了!!
轉(zhuǎn)載于:https://blog.51cto.com/wiigood/958627
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