Tomcat+Nginx+Memcached集群部署
主機環境 redhat6.5 64位
實驗環境 服務端1 ip172.25.29.1?? nginx
服務端2 ip 172.25.29.2??? tomcat+memcached
服務端3 ip 172.25.29.3??? tomcat+memcached
安裝包? jdk-7u79-linux-x64.tar.gz
?apache-tomcat-7.0.37.tar.gz
?nginx-goodies-nginx-sticky-module-ng-c78b7dd79d0d.tar.gz
?asm-3.2.jar
?kryo-1.04.jar
?kryo-serializers-0.10.jar
?memcached-session-manager-1.6.3.jar
?memcached-session-manager-tc7-1.6.3.jar
?minlog-1.2.jar
?msm-kryo-serializer-1.6.3.jar
?reflectasm-1.01.jar
?spymemcached-2.7.3.jar
防火墻狀態 關閉
?
1.jdk安裝、環境配置及測試服務端2
1.解壓、作軟鏈接
[root@server2mnt]# tar zxf jdk-7u79-linux-x64.tar.gz -C /usr/local/? #解壓jdk
[root@server2mnt]# cd /usr/local/ ? ? ?#切換到解壓目錄
[root@server2local]# ls
bin? etc?games? include? jdk1.7.0_79?lib? lib64? libexec?sbin? share? src
[root@server2local]# ln -s jdk1.7.0_79/ java????? #作軟鏈接
[root@server2local]# ll
total44
drwxr-xr-x.2 root root 4096 Jun 28? 2011 bin
drwxr-xr-x.2 root root 4096 Jun 28? 2011 etc
drwxr-xr-x.2 root root 4096 Jun 28? 2011 games
drwxr-xr-x.2 root root 4096 Jun 28? 2011 include
lrwxrwxrwx.1 root root?? 12 Sep 24 10:50 java ->jdk1.7.0_79/??? #查看
drwxr-xr-x.8 uucp? 143 4096 Apr 11? 2015 jdk1.7.0_79
drwxr-xr-x.2 root root 4096 Jun 28? 2011 lib
drwxr-xr-x.2 root root 4096 Jun 28? 2011 lib64
drwxr-xr-x.2 root root 4096 Jun 28? 2011 libexec
drwxr-xr-x.2 root root 4096 Jun 28? 2011 sbin
drwxr-xr-x.5 root root 4096 Aug? 8 21:38 share
drwxr-xr-x.2 root root 4096 Jun 28? 2011 src
2.將jdk添加到環境變量
[root@server2local]# vim /etc/profile???
?79 export JAVA_HOME=/usr/local/java
?80 exportCLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
?81 export PATH=$PATH:$JAVA_HOME/bin
[root@server2local]# source /etc/profile
3.測試
[root@server2local]# echo $JAVA_HOME??? #測試添加環境變量是否成功
/usr/local/java
[root@server2local]# echo $CLASSPATH
.:/usr/local/java/lib:/usr/local/java/jre/lib
[root@server2local]# echo $JAVA_HOME ????
/usr/local/java
[root@server2local]# cd java?????? #測試java的環境是否配置成功
[root@server2java]# vim test.java??? #寫個簡單的測試頁
? 1 public class test{
? 2????????public static void main(String[] args)
? 3????????{
? 4???????????????? System.out.println("Helloworld!");
? 5????????}
? 6 }
[root@server2java]# javac test.java??? #鏈接生成test.class文件
[root@server2mnt]# java test??? #執行
Helloworld!
?
2.tomcat的安裝服務端2
1.解壓、作軟鏈接
[root@server2mnt]# tar zxf apache-tomcat-7.0.8.tar.gz -C /usr/local/? #解壓
[root@server2mnt]# cd /usr/local/
[root@server2local]# ls
apache-tomcat-7.0.8? etc???include? jdk1.7.0_79? lib64???sbin?? src
bin????????????????? games? java????lib????????? libexec? share
[root@server2local]# ln -s apache-tomcat-7.0.8/ tomcat???#作軟鏈接
[root@server2local]# ll
total48
drwxr-xr-x.9 root root 4096 Sep 24 11:11 apache-tomcat-7.0.8
drwxr-xr-x.2 root root 4096 Jun 28? 2011 bin
drwxr-xr-x.2 root root 4096 Jun 28? 2011 etc
drwxr-xr-x.2 root root 4096 Jun 28? 2011 games
drwxr-xr-x.2 root root 4096 Jun 28? 2011 include
lrwxrwxrwx.1 root root?? 12 Sep 24 10:50 java ->jdk1.7.0_79/
drwxr-xr-x.8 uucp? 143 4096 Sep 24 11:02 jdk1.7.0_79
drwxr-xr-x.2 root root 4096 Jun 28? 2011 lib
drwxr-xr-x.2 root root 4096 Jun 28? 2011 lib64
drwxr-xr-x.2 root root 4096 Jun 28? 2011 libexec
drwxr-xr-x.2 root root 4096 Jun 28? 2011 sbin
drwxr-xr-x.5 root root 4096 Aug? 8 21:38 share
drwxr-xr-x.2 root root 4096 Jun 28? 2011 src
lrwxrwxrwx.1 root root?? 20 Sep 24 11:12 tomcat-> apache-tomcat-7.0.8/???? #查看
[root@server2local]# cd tomcat/bin
[root@server2bin]# ./startup.sh???? #開啟tomcat
?
2.測試
[root@server2bin]#cd ..
[root@server2tomcat]# vim webapps/ROOT/test.jsp??? #寫測試儀頁
? 1 server2-The Time is <%=newjava.util.Date()%>
#測試 172.25.29.2:8080
172.25.29.2:8080/test.jsp
在服務端3上進行同樣的配置也可以用scp把服務端2上java和tomcat目錄傳過去如下
[root@server2local]# scp -r java/ tomcat/ 172.25.29.3:/usr/local/
在進行系統環境里加上java的配置啟動tomcat即可
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3.Nginx添加sticky? (服務端1)
1.nginx負載均衡已經配置好了
在前面的博客里已經寫過nginx源碼安裝這里就不再重復了也可以參考前面的博客
[root@server1~]# cd /usr/local/lnmp/nginx/conf??
[root@server1conf]# vim nginx.conf
?20????upstream wen {
?21?????????????? ??server 172.25.29.2:8080;??? #輪詢機制
?22???????????????? server 172.25.29.3:8080;
?23????????}
?49????????location / {
?50????????????root?? html;
?51????????????index? index.html index.jspindex.php index.htm;?? #默認發布目錄
?52????????}
?
?68????????location ~ \.jsp$ {
?69????????????proxy_pass?? http://wen;
?70????????}
[root@server1conf]# nginx -t??? #檢測
nginx:the configuration file /usr/local/lnmp/nginx/conf/nginx.conf syntax is ok
nginx:configuration file /usr/local/lnmp/nginx/conf/nginx.conf test is successful
[root@server1conf]# nginx -s reload??? #刷新
測試 172.25.29.1
?
172.25.29.1/test.jsp
刷新之后
也就是server2 和server3相互交替
?
2.改變負載均衡機制為sticky
由于nginx是輪詢機制如果在訪問頁面如填寫信息時突然卡住刷新之后就會跳到另一個server上就得重新開始填寫。但是Nginx里有很多算法其中的ip_hash也可以防止這些問題。使用ip_hash有一個問題是當客戶端和服務器之間使用cdn內容分發系統高速緩存時客戶端的訪問到達cdn由cdn訪問服務器識別的ip是cdn的ip那么將集中于訪問后臺的一臺服務器(x相當于DDOS***)會加速服務器的損壞。那么為了防止這些問題就有用下面的算法sticky不是nginx里自帶的nginx-sticky-module為 nginx 的第三方模塊,使 nginx 支持 sticky 模式,所以需要將包加入配置、重新編譯、安裝nginx
?
1.重新源碼安裝nginx添加一個模塊
[root@server1local]# nginx -s stop ? ? ?#關閉nginx
[root@server1mnt]# tar zxf nginx-goodies-nginx-sticky-module-ng-c78b7dd79d0d.tar.gz #解壓
[root@server1mnt]# ls
nginx-1.8.1.tar.gz
nginx-goodies-nginx-sticky-module-ng-c78b7dd79d0d
nginx-goodies-nginx-sticky-module-ng-c78b7dd79d0d.tar.gz
?
[root@server1nginx-1.8.1]# make clean??? #清除上一次的緩存文件
rm-rf Makefile objs
[root@server1nginx-1.10.1]# ./configure --prefix=/usr/local/lnmp/nginx?? #重新配置--with-http_ssl_module--with-http_stub_status_module--add-module=/mnt/nginx-goodies-nginx-sticky-module-ng-c78b7dd79d0d
[root@server1nginx-1.8.1]# make???? #編譯、鏈接
[root@server1nginx-1.8.1]# make install?? #安裝
[root@server1nginx-1.8.1]#cd /usr/local/lnmp/nginx/conf
[root@server1conf]# vim nginx.conf
?18????????upstream westos{
?19???????????????? sticky;???? #使用sticky
?20???????????????? server 172.25.29.2:8080;
?21???????????????? server 172.25.29.3:8080;
[root@server1local]# nginx -t?? #檢測nginx文件里是否有錯誤
nginx:the configuration file /usr/local/lnmp/nginx/conf/nginx.conf syntax is ok
nginx:configuration file /usr/local/lnmp/nginx/conf/nginx.conf test is successful
[root@server1local]# nginx?? #啟動
2.測試
測試 172.25.29.1/test.jsp
刷新之后結果不變還是
?
4交叉存儲避免單點故障添加memcached服務端2
配置好之后如果一臺服務器宕機了那么這臺服務器正在運行的業務將直接結束正在存儲的數據丟失。為了防止這些問題Tomcat1將session存儲到Tomcat2的memcached中當Tomcat2的memcached不可用時Tomcat1將session存儲到自己的memcached上Tomcat2則正好相反。使用這種配置就避免了單點故障。
1.安裝、開啟memcached、寫測試頁
[root@server2ROOT]# yum install -y memcached????? #安裝memcached
[root@server2ROOT]# /etc/init.d/memcached start????? #開啟memcached
Startingmemcached:??????????????????????????????????????? [? OK? ]
[root@server2tomcat]# bin/shutdown.sh?? #關閉Tomcat
[root@server2ROOT]# vim test.jsp??? #寫一個jsp的測試頁面
? 1 <%@ page contentType="text/html;charset=GBK" %>
? 2 <%@ page import="java.util.*"%>
? 3<html><head><title>Cluster AppTest</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 String dataName =request.getParameter("dataName");
?11 if (dataName != null &&dataName.length() > 0) {
?12 String dataValue =request.getParameter("dataValue");
?13 session.setAttribute(dataName, dataValue);
?14 }
?15 out.print("<b>Sessionlist</b>");
?16 Enumeration e =session.getAttributeNames();
?17 while (e.hasMoreElements()) {
?18 String name = (String)e.nextElement();
?19 String value =session.getAttribute(name).toString();
?20 out.println( name + " = " +value+"<br>");
?21 System.out.println( name + " = "+ value);
?22 }
?23 %>
?24 <form action="test.jsp"method="POST">
?25 name:<input type=text size=20name="dataName">
?26 <br>
?27 key:<input type=text size=20name="dataValue">
?28 <br>
?29 <input type=submit>
?30 </form>
?31 </body>
?32 </html>
[root@server2ROOT]# cd /usr/local/tomcat/lib
[root@server2mnt]# ls /mnt/update/????? #先前下載好的包
asm-3.2.jar????????????????????????????? minlog-1.2.jar
kryo-1.04.jar???????????????????????????msm-kryo-serializer-1.6.3.jar
kryo-serializers-0.10.jar??????????????? reflectasm-1.01.jar
memcached-session-manager-1.6.3.jar????? spymemcached-2.7.3.jar
memcached-session-manager-tc7-1.6.3.jar
[root@server2mnt]# cd /usr/local/tomcat/lib/
[root@server2lib]# mv /mnt/update/* . ???#將包移動到指定路徑
[root@server2lib]# ls
annotations-api.jar?????????????????memcached-session-manager-tc7-1.6.3.jar
asm-3.2.jar????????????????????????? minlog-1.2.jar
catalina-ant.jar????????????????????msm-kryo-serializer-1.6.3.jar
catalina-ha.jar????????????????????? reflectasm-1.01.jar
catalina.jar???????????????????????? servlet-api.jar
catalina-tribes.jar????????????????? spymemcached-2.7.3.jar
ecj-4.2.1.jar??????????????????????? tomcat-api.jar
el-api.jar?????????????????????????? tomcat-coyote.jar
jasper-el.jar??????????????????????? tomcat-dbcp.jar
jasper.jar?????????????????????????? tomcat-i18n-es.jar
jsp-api.jar????????????????????????? tomcat-i18n-fr.jar
kryo-1.04.jar??????????????????????? tomcat-i18n-ja.jar
kryo-serializers-0.10.jar??????????? tomcat-jdbc.jar
memcached-session-manager-1.6.3.jar? tomcat-util.jar
[root@server2lib]# cd ..
UsingCATALINA_BASE:?? /usr/local/tomcat
UsingCATALINA_HOME:?? /usr/local/tomcat
UsingCATALINA_TMPDIR: /usr/local/tomcat/temp
UsingJRE_HOME:??????? /usr/local/java
UsingCLASSPATH:?????? /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
[root@server2tomcat]# vim conf/context.xml??? #添加節點及節點失效后該怎么存儲
?34 <ManagerclassName="de.javakaffee.web.msm.MemcachedBackupSessionManager"
?35memcachedNodes="n1:172.25.29.2:11211,n2:172.25.29.3:11211"? ???#結點
?36 failoverNodes="n1"?????????? #當n2失效時存儲到n1上
?37requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"
?38transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderF??? actory"
?39 />
[root@server2tomcat]# bin/startup.sh?? #開啟Tomcat
服務端3和服務端2的配置基本相同唯一不同的是上面提到的/usr/local/tomcat/conf/context.xml里的36行把“n1”改成“n2”可以用scp傳過去再做修改。
?
2.測試
測試 172.25.29.1/test.jsp
添加用戶
添加完成
添加3個用戶
??????????????????????????? ??
[root@server2tomcat]# tail -f logs/catalina.out ??? ?#查看日志
Sep28, 2016 11:39:53 PM de.javakaffee.web.msm.serializer.kryo.KryoTranscoder<init>
INFO:Starting with initialBufferSize 102400 and maxBufferSize 2048000
Sep28, 2016 11:39:53 PM de.javakaffee.web.msm.MemcachedSessionServicestartInternal
INFO:MemcachedSessionService finished initialization, sticky true, operation timeout1000, with node ids [n2] and failover node ids [n1]
Sep28, 2016 11:39:53 PM org.apache.coyote.AbstractProtocol start
INFO:Starting ProtocolHandler ["http-bio-8080"]
Sep28, 2016 11:39:53 PM org.apache.coyote.AbstractProtocol start
INFO:Starting ProtocolHandler ["ajp-bio-8009"]
Sep28, 2016 11:39:53 PM org.apache.catalina.startup.Catalina start
INFO:Server startup in 1921 ms
user1= 111
user2= 222
user1= 111?? ??? ??? #上面創建的用戶
user2= 222
user1= 111
user3= 333
^C
[root@server2tomcat]# telnet 172.25.29.3 11211? #遠程登陸服務端3查看是否是否寫進入11211是memcached的端口號
Trying172.25.29.3...
Connectedto 172.25.29.3.
Escapecharacter is '^]'.
get50B9BAB1CBB21C9BF884CC3613560752-n2?? #get后面的是上面截圖里的ID
VALUE50B9BAB1CBB21C9BF884CC3613560752-n2 2048 125
[1]WWqt2Wqt01WqtWqt#50B9BAB1CBB21C9BF884CC3613560752-n2
user2
222user1
111user3
333?????? #大概可以看出來添加的用戶
END
quit
Connectionclosed by foreign host.
?
[root@server2tomcat]# bin/shutdown.sh? #關閉Tomcat1
UsingCATALINA_BASE:?? /usr/local/tomcat
UsingCATALINA_HOME:?? /usr/local/tomcat
UsingCATALINA_TMPDIR: /usr/local/tomcat/temp
UsingJRE_HOME:??????? /usr/local/java
UsingCLASSPATH:??????/usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
?
當關閉Tomcat1續輸入數據時并沒有中斷而是跳到Tomcat2上且數據并未丟失
[root@server2tomcat]# telnet 172.25.29.3 11211???? #遠程登陸服務端3
Trying172.25.29.3...
Connectedto 172.25.29.3.
Escapecharacter is '^]'.
get50B9BAB1CBB21C9BF884CC3613560752-n2
VALUE50B9BAB1CBB21C9BF884CC3613560752-n2 2048 137
[1]WWqt2Wqu01WquWqu4#50B9BAB1CBB21C9BF884CC3613560752-n2
user2 ?222user1 ?111user4 ?444user3 ?333?? #大概可以看到數據還是寫入服務端3
END
quit
Connectionclosed by foreign host.
轉載于:https://blog.51cto.com/12087746/1857864
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