Nginx+Tomcat 集群部署
2017-09-07 21:47
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1.Nginx + Tomcat 集群部署 简单配置
1 #user nobody;
2 worker_processes 4;#工作进程的个数
3
4 #error_log logs/error.log;
5 #error_log logs/error.log notice;
6 #error_log logs/error.log info;
7
8 #pid logs/nginx.pid;
9
10
11 events {
12 worker_connections 1024; #单个进程连接数
13 }
14
15
16 http {
17 include mime.types;
18 default_type application/octet-stream;
19
20 #log_format main '$remote_addr - $remote_user [$time_local] "$request" '
21 # '$status $body_bytes_sent "$http_referer" '
22 # '"$http_user_agent" "$http_x_forwarded_for"';
23
24 #access_log logs/access.log main;
25
26 sendfile on;
27 #tcp_nopush on;
28
29 #keepalive_timeout 0;
30 keepalive_timeout 65;
31
32 #gzip on;
33 #配置反向代理配置
34 gzip on;
35 upstream netitcast.com{
36 # 定下请求ip_hash;
37 ip_hash;
38 server 127.0.0.1:8181 weight=1;#服务器配置 代理分配 weight:分配权重 down:不参与负载均衡
39 server 192.168.0.105:8181 weight=1;#
40 }
41
42 server {
43 listen 8888;
44 server_name localhost;
45
46 #charset koi8-r;
47
48 #access_log logs/host.access.log main;
49
50 location / {
51 root html;
52 index index.html index.htm;
53 # 配置
54 proxy_pass http://netitcast.com;
55 }
56
57 #error_page 404 /404.html;
58
59 # redirect server error pages to the static page /50x.html
60 #
61 error_page 500 502 503 504 /50x.html;
62 location = /50x.html {
63 root html;
64 }
65
66 # proxy the PHP scripts to Apache listening on 127.0.0.1:80
67 #
68 #location ~ \.php$ {
69 # proxy_pass http://127.0.0.1;
70 #}
71
72 # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
73 #
74 #location ~ \.php$ {
75 # root html;
76 # fastcgi_pass 127.0.0.1:9000;
77 # fastcgi_index index.php;
78 # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
79 # include fastcgi_params;
80 #}
81
82 # deny access to .htaccess files, if Apache's document root
83 # concurs with nginx's one
84 #
85 #location ~ /\.ht {
86 # deny all;
87 #}
88 }
89
90
91 # another virtual host using mix of IP-, name-, and port-based configuration
92 #
93 #server {
94 # listen 8000;
95 # listen somename:8080;
96 # server_name somename alias another.alias;
97
98 # location / {
99 # root html;
100 # index index.html index.htm;
101 # }
102 #}
103
104
105 # HTTPS server
106 #
107 #server {
108 # listen 443 ssl;
109 # server_name localhost;
110
111 # ssl_certificate cert.pem;
112 # ssl_certificate_key cert.key;
113
114 # ssl_session_cache shared:SSL:1m;
115 # ssl_session_timeout 5m;
116
117 # ssl_ciphers HIGH:!aNULL:!MD5;
118 # ssl_prefer_server_ciphers on;
119
120 # location / {
121 # root html;
122 # index index.html index.htm;
123 # }
124 #}
125
126 }
2.关于Session 的问题
2.1Tomcat 提供了Cluster 的组件实现session 复制 ，Clurster 的配置
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8"> <!-- 复制方式： org.apache.catalina.ha.session.DeltaManager：复制所有的session 到所有的节点（节点太多，耗费资源） org.apache.catalina.ha.session.BackupManager： expireSessionsOnShutdown:一个程序被关闭时候，是否要销毁所有session notifyListenersOnReplication:session复制和移动的时候通知 --> <Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/> <Channel className="org.apache.catalina.tribes.group.GroupChannel"> <Membership className="org.apache.catalina.tribes.membership.McastService" address="228.0.0.4" port="45564" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="auto" port="4002" autoBind="100" selectorTimeout="5000" maxThreads="6"/> <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> </Channel> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/> <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/> <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster>
注意:使用Cluster的组件实现Session复制的时候，一定要在程序中web.xml加上这样一句告诉tomcat这个程序是分布式
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"> <display-name>Test</display-name> <!-- 分布式 --> <distributable/> </web-app>
测试Session复制和Nginx集群是否成功页面
1 <%@ page contentType="text/html; charset=GBK" %>
2 <%@ page import="java.util.*" %>
3 <html><head><title>Cluster App Test</title></head>
4 <body>
5 Server Info:
6 <%
7 out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
8 <%
9 out.println("<br> ID " + session.getId()+"<br>");
10 // 如果有新的 Session 属性设置
11 String dataName = request.getParameter("dataName");
12 if (dataName != null && dataName.length() > 0) {
13 String dataValue = request.getParameter("dataValue");
14 session.setAttribute(dataName, dataValue);
15 }
16 out.println("<b>Session 列表</b><br>");
17 System.out.println("============================");
18 Enumeration e = session.getAttributeNames();
19 while (e.hasMoreElements()) {
20 String name = (String)e.nextElement();
21 String value = session.getAttribute(name).toString();
22 out.println( name + " = " + value+"<br>");
23 System.out.println( name + " = " + value);
24 }
25 %>
26 <form action="index.jsp" method="POST">
27 名称:<input type=text size=20 name="dataName">
28 <br>
29 值:<input type=text size=20 name="dataValue">
30 <br>
31 <input type=submit>
32 </form>
33 </body>
34 </html>
到了这里我有两个疑问没有解决，
1.使用Cluster虽然Session复制成功了，但是在网页上使用iframe 框架时候会出现失效
2.文件上传的问题
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