一、环境介绍

二、安装后端服务器

三、安装前端Apache服务

四、配置Apache使用mod_jk模块实现代理及负载均衡

五、配置Apache基于mod_proxy模块实现代理及负载均衡

六、论坛安装

七、安装并配置Keepalived实现前端高可用


一、环境介绍

系统版本:CentOS 6.4_x86_64

Mysql版本:mysql-5.1.66-2.el6_3.x86_64

Apache版本:httpd-2.2.25 点此下载

Keepalived版本:keepalived-1.2.7 点此下载

Tomcat版本:apache-tomcat-7.0.33 点此下载

Jdk版本: jdk-7u40-linux-x64 点此下载

Tomcat-commectors版本:tomcat-connectors-1.2.37 点此下载

论坛版本:JspRun!_6.0.0_GBK 点此下载

环境介绍:

当用户通过 "www.allen.com" 域名访问时,首先是由前端两台Apache代理服务器响应并转发到后端Tomcat服务器上,而在Apache上做的是反向代理负载均衡到后端Tomcat服务器上,前端服务器使用Keepalived做的高可用集群,【Apache1默认为Master,Apache2为Backup】虚拟IP地址为"172.16.14.10"模拟为公网IP;当然这里数据库只有一台主机会成为点故障,这里不要介绍Mysql的高可用,如果有兴趣可以看前面写的博客

提示:这里使用Keepalived做高可用时,前面所有的服务都已完成后,最后实现的对前端服务器做高可用


二、安装后端Tomcat与Mysql服务器

1、在Tomcat1与Tomcat2服务器上安装Tomcat,安装方法相同,这里只介绍一次

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
安装JDK
# rpm -ivh jdk-7u40-linux-x64.rpm
# vim /etc/profile.d/java.sh
export JAVA_HOME=/usr/java/latest
export PATH=$JAVA_HOME/bin:$PATH
# . /etc/profile.d/java.sh
# java -version
java version "1.7.0_40"
Java(TM) SE Runtime Environment (build 1.7.0_40-b43)
Java HotSpot(TM) 64-Bit Server VM (build 24.0-b56, mixed mode)
------------------------------------------------------------------------
安装Tomcat
# tar xf apache-tomcat-7.0.33.tar.gz -C /usr/local/
# cd /usr/local/
# ln -s apache-tomcat-7.0.33 tomcat
# vim /etc/profile.d/tomcat.sh
export CATALINA_HOME=/usr/local/tomcat
export PATH=$CATALINA_HOME/bin:$PATH
# . /etc/profile.d/tomcat.sh
# catalina.sh version
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/java/latest
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Server version: Apache Tomcat/7.0.33
Server built:   Nov 18 2012 04:15:21
Server number:  7.0.33.0
OS Name:        Linux
OS Version:     2.6.32-358.el6.x86_64
Architecture:   amd64
JVM Version:    1.7.0_40-b43
JVM Vendor:     Oracle Corporation

2、启动Tomcat服务并访问测试,默认访问端口为"8080";如下

1
2
3
4
5
6
7
8
9
10
11
# catalina.sh start
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/java/latest
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
# jps
2283 Jps
2272 Bootstrap
# ss -tanlp | grep 8080
LISTEN     0      100       :::8080        :::*      users:(("java",2272,40))

3、开启Tomcat管理及状态页面

1
2
3
4
5
6
# vim /usr/local/tomcat/conf/tomcat-users.xml
  <role rolename="manager-gui"/>
  <role rolename="admin-gui"/>
  <user username="allen" password="admin" roles="manager-gui,admin-gui"/>
# catalina.sh stop
# catalina.sh start

4、访问Tomcat后台管理

5、安装Mysql服务器

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
######安装Mysql并创建数据库,授权用户访问新创建的数据库有所有权,方便后面使用
[root@Mysql ~]# yum -y install mysql-server
[root@Mysql ~]# service mysqld start
[root@Mysql ~]# mysql
mysql> create database bbs;
mysql> grant all on bbs.* to 'bbsuser'@'172.16.%.%' identified by 'bbspass';
mysql> flush privileges;
----------------------------------------------------------------------
远程连接数据库测试授权用户是否能连接成功
# mysql -ubbsuser -pbbspass -h 172.16.14.5 -e 'show databases';
+--------------------+
| Database           |
+--------------------+
| information_schema |
| bbs                |
test               |
+--------------------+

三、安装前端Apache服务

1、在Apache1与Apache2服务器上安装Httpd软件,安装方法相同,这里只介绍一次

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
# tar xf httpd-2.2.25.tar.bz2
# cd httpd-2.2.25
# yum -y install gcc gcc-c++ openssl-devel pcre-devel
# ./configure --prefix=/usr/local/apache --sysconfdir=/etc/httpd --enable-modules=most --enable-so --enable-ssl --enable-cgi --enable-rewrite --with-zlib --with-pcre --enable-mpms-shared=all --with-mpm=prefork --enable-proxy --enable-proxy-http --enable-proxy-ajp --enable-proxy-balancer --enable-cache --enable-cache-disk --enable-mem-cache --enable-file-cache --enable-proxy-connect
# make && make install
# cp build/rpm/httpd.init /etc/init.d/httpd
------修改如下内容
# vim /etc/init.d/httpd
httpd=${HTTPD-/usr/local/apache/bin/httpd}
pidfile=${PIDFILE-/usr/local/apache/logs/${prog}.pid}
lockfile=${LOCKFILE-/var/lock/subsys/${prog}}
RETVAL=0
# check for 1.3 configuration
check13 () {
        CONFFILE=/etc/httpd/httpd.conf
----------------------------------------------------------------------
修改环境变量并把Httpd加入到系统服务
# echo "PATH=/usr/local/apache/bin:$PATH" >> /etc/profile.d/http.sh
# . /etc/profile.d/http.sh
# ln -s /usr/local/apache/include/ /usr/include/httpd
# chkconfig --add httpd
----------------------------------------------------------------------
创建测试页
# echo "<h1>APACHE</h1>" > /usr/local/apache/htdocs/index.html

2、在Apache1与Apache2服务器上安装"tomcat-connectors"

1
2
3
4
5
6
7
8
9
10
11
12
13
# tar xf tomcat-connectors-1.2.37-src.tar.gz
# cd tomcat-connectors-1.2.37-src/native/
# ./configure --with-apxs=/usr/local/apache/bin/apxs
# make && make install
------------------------------------------------------------------------
安装完成后会生成如下文件
# ls /usr/local/apache/modules/
  mod_jk.so
------------------------------------------------------------------------
启动Httpd服务
#service httpd start
# ss -tanl |grep 80
LISTEN     0      128              :::80               :::*

3、访问测试Apache是否正常工作

四、配置Apache使用mod_jk模块实现代理及负载均衡

1、修改Apache主配置文件,包含一个文件并创建该文件;实现代理功能

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
将下面指令添加到文件末尾即可
# vim /etc/httpd/httpd.conf
Include /etc/httpd/extra/mod_jk.conf
------------------------------------------------------------------------
创建文件添加如下内容
# vim /etc/httpd/extra/mod_jk.conf
LoadModule  jk_module  modules/mod_jk.so
JkWorkersFile  /etc/httpd/extra/workers.properties
JkLogFile  logs/mod_jk.log
JkLogLevel  debug
JkMount  /*  TomcatA
JkMount  /status/  stat1
------------------------------------------------------------------------
# vim /etc/httpd/extra/workers.properties
worker.list=TomcatA,stat1
worker.TomcatA.port=8009
worker.TomcatA.host=172.16.14.3
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.stat1.type = status
----------------------------------------------------------------------
# service httpd restart

2、修改后端Tomcat1服务器,添加一个虚拟主机并提供测试页面

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
[root@Tomcat1 ~]# cd /usr/local/tomcat/conf/
[root@Tomcat1 conf]# cp server.xml server.xml.bak
[root@Tomcat1 conf]# vim server.xml
######修改如下内容
<Engine name="Catalina" defaultHost="www.allen.com" jvmRoute="TomcatA">
######在"Engine"中添加如下内容
<Host name="www.allen.com"  appBase="/web/allen"
            unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="allen_access_log." suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
        <Context path="" docBase="/web/allen" />
      </Host>
----------------------------------------------------------------------
######创建网站存放目录并创建测试页
[root@Tomcat1 ~]# mkdir -p /web/allen
[root@Tomcat1 ~]# vim /web/allen/index.jsp
<%@ page language="java" %>
<html>
  <head><title>TomcatA</title></head>
  <body>
    <h1><font color="red">TomcatA </font></h1>
    <table align="centre" border="1">
      <tr>
        <td>Session ID</td>
    <% session.setAttribute("abc","abc"); %>
        <td><%= session.getId() %></td>
      </tr>
      <tr>
        <td>Created on</td>
        <td><%= session.getCreationTime() %></td>
     </tr>
    </table>
  </body>
</html>
----------------------------------------------------------------------
######重启Tomcat服务并查看是否启动成功
[root@Tomcat1 ~]# catalina.sh stop
[root@Tomcat1 ~]# catalina.sh configtest
[root@Tomcat1 ~]# catalina.sh start
[root@Tomcat1 ~]# ss -tanlp | grep java
LISTEN     0      100                      :::8080                    :::*      users:(("java",6323,40))
LISTEN     0      1          ::ffff:127.0.0.1:8005                    :::*      users:(("java",6323,52))
LISTEN     0      100                      :::8009                    :::*      users:(("java",6323,41))

3、访问Apache1主机,验证是否代理成功

4、修改Apache配置文件(mod_jk.conf、workers.properties);实现负载均衡

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
# vim /etc/httpd/extra/mod_jk.conf
LoadModule  jk_module  modules/mod_jk.so
JkWorkersFile  /etc/httpd/extra/workers.properties
JkLogFile  logs/mod_jk.log
JkLogLevel  debug
JkMount  /*  lbcluster
JkMount  /status/  stat1
------------------------------------------------------------------------
# vim /etc/httpd/extra/workers.properties
worker.list=lbcluster,stat1
worker.TomcatA.port=8009
worker.TomcatA.host=172.16.14.3
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.TomcatB.port = 8009
worker.TomcatB.host=172.16.14.4
worker.TomcatB.type = ajp13
worker.TomcatB.lbfactor = 1
worker.lbcluster.type = lb
worker.lbcluster.sticky_session = 0  #取值为{1|0}1将用户session与后端服务器绑定,0为不绑定,如果支持session复制或session共享可以设置为0
worker.lbcluster.balance_workers = TomcatA, TomcatB
worker.stat1.type = status
----------------------------------------------------------------------
# service httpd reload

5、修改后端Tomcat2服务器,添加一个虚拟主机并提供测试页面

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
[root@Tomcat2 ~]# cd /usr/local/tomcat/conf/
[root@Tomcat2 conf]# cp server.xml server.xml.bak
[root@Tomcat2 conf]# vim server.xml
######修改如下内容
<Engine name="Catalina" defaultHost="www.allen.com" jvmRoute="TomcatB">
######在"Engine"中添加如下内容
<Host name="www.allen.com"  appBase="/web/allen"
            unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="allen_access_log." suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
        <Context path="" docBase="/web/allen" />
      </Host>
----------------------------------------------------------------------
######创建网站存放目录并创建测试页
[root@Tomcat2 ~]# mkdir -p /web/allen
[root@Tomcat2 ~]# vim /web/allen/index.jsp
<%@ page language="java" %>
<html>
  <head><title>TomcatB</title></head>
  <body>
    <h1><font color="blue">TomcatB </font></h1>
    <table align="centre" border="1">
      <tr>
        <td>Session ID</td>
    <% session.setAttribute("abc","abc"); %>
        <td><%= session.getId() %></td>
      </tr>
      <tr>
        <td>Created on</td>
        <td><%= session.getCreationTime() %></td>
     </tr>
    </table>
  </body>
</html>
----------------------------------------------------------------------
######重启Tomcat服务并查看是否启动成功
[root@Tomcat2 ~]# catalina.sh stop
[root@Tomcat2 ~]# catalina.sh configtest
[root@Tomcat2 ~]# catalina.sh start
[root@Tomcat2 ~]# ss -tanlp | grep java
LISTEN     0      100                      :::8080                    :::*      users:(("java",6323,40))
LISTEN     0      1          ::ffff:127.0.0.1:8005                    :::*      users:(("java",6323,52))
LISTEN     0      100                      :::8009                    :::*      users:(("java",6323,41))

6、访问Apache服务器,测试是否实现负载均衡

由上可见,基于Apache的mod_jk模块已成功实现负载均衡功能


五、配置Apache基于mod_proxy模块实现代理及负载均衡

1、修改Apache的主配置文件,包含一个文件并创建该文件;实现代理功能

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
# vim /etc/httpd/httpd.conf
#Include /etc/httpd/extra/mod_jk.conf    #注释此行
Include /etc/httpd/extra/mod_proxy.conf
------------------------------------------------------------------------
# vim /etc/httpd/extra/mod_proxy.conf
ProxyVia On
ProxyRequests Off
ProxyPreserveHost Off
<Proxy *>
  Order allow,deny
  Allow from all
</Proxy>
  ProxyPass  /  ajp://172.16.14.3:8009/
  ProxyPassReverse  /  ajp://172.16.14.3:8009/
<Location  / >
  Order allow,deny
  Allow from all
</Location>
----------------------------------------------------------------------
# service httpd reload
======================================================================
注释:
  ProxyPass  /  ajp://172.16.14.3:8009/    #使用的是ajp协议
  ProxyPassReverse  /  ajp://172.16.14.3:8009/
可以更改为使用http协议;如下
  ProxyPass  /  http://172.16.14.3:8080/
  ProxyPassReverse  /  http://172.16.14.3:8080/
######这里只演示使用ajp协议,如果是Apache与Tomcat结合建议使用ajp协议

2、访问Apache1服务器,测试是否代理成功

3、修改Apache配置文件(mod_proxy.conf);实现负载均衡

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
# vim /etc/httpd/extra/mod_proxy.conf
ProxyVia Off
ProxyRequests Off
ProxyPreserveHost Off
<Proxy balancer://allen>
  BalancerMember ajp://172.16.14.3:8009 loadfactor=1
  BalancerMember ajp://172.16.14.4:8009 loadfactor=1
  ProxySet lbmethod=bytraffic
</Proxy>
<Location /allen>    #设置状态及管理页面
  SetHandler balancer-manager
  Proxypass !
  Order allow,deny
  Allow from all
</Location>
<Proxy *>
  Order allow,deny
  Allow from all
</Proxy>
  ProxyPass  /  balancer://allen/    stickysession=JSESSIONID
  ProxyPassReverse  /  balancer://allen/
<Location  / >
  Order allow,deny
  Allow from all
</Location>
----------------------------------------------------------------------
注释:
  BalancerMember ajp://172.16.14.3:8009 loadfactor=1  #使用ajp协议
  BalancerMember ajp://172.16.14.4:8009 loadfactor=1
可更改为使用http协议
  BalancerMember http://172.16.14.3:8080 loadfactor=1
  BalancerMember http://172.16.14.4:8080 loadfactor=1
######这里只介绍使用ajp协议,如果有兴趣可以更改一下;loadfactor:权重
----------------------------------------------------------------------
ProxySet lbmethod=bytraffic    #设置调度算法
byrequests:即基于权重将统计请求个数进行调度(默认)
bytraffic:则执行基于权重的流量计数调度
bybusyness:通过考量每个后端服务器的当前负载进行调度
----------------------------------------------------------------------
# service httpd reload

4、访问Apache服务器,测试基于mod_proxy模块是否实现负载均衡

六、论坛安装

1、在Tomcat1服务器上安装

1
2
3
4
5
6
7
8
9
10
11
12
13
14
# unzip JspRun\!_6.0.0_GBK.zip
# mv /web/allen/index.jsp /web/allen/test.jsp
# cp -r upload/* /web/allen/
------------------------------------------------------------------------
修改论坛数据库连接文件
# vim /web/allen/config.properties
dbhost = 172.16.14.5
dbport=3306
dbuser = bbsuser
dbpw = bbspass
dbname = bbs
------------------------------------------------------------------------
# catalina.sh stop
# catalina.sh start

2、安装论坛程序

3、点击下一步-->我同意-->下一步,进入数据库配置页面

4、点下一步-->(填写管理员密码)下一步-->进入创建数据表阶段-->然后点-->进入首页

5、将论坛程序拷贝到Tomcat2服务器上一份并访问测试

1
2
3
4
5
# mv /web/allen/index.jsp /web/allen/test.jsp    #把原来的测试页重命名
------------------------------------------------------------------------
# scp -r 172.16.14.3:/web/allen/* /web/allen/
# catalina.sh stop
# catalina.sh start

6、访问Apache服务器,测试是否能正常访问论坛程序,这里就不在做访问测试


七、安装并配置Keepalived

1、将Apache1服务器的Httpd配置文件复制到Apache2服务器

1
2
3
4
[root@Apache1 ~]# cd /etc/httpd/
[root@Apache1 httpd]# scp httpd.conf 172.16.14.2:/etc/httpd/
[root@Apache1 httpd]# cd extra/
[root@Apache1 extra]# scp mod_jk.conf mod_proxy.conf workers.properties 172.16.14.2:/etc/httpd/extra/

2、在Apache1与Apache2服务器上安装Keepalived;这里使用rpm包安装,光盘映像中有

1
2
3
[root@Apache1 ~]# yum -y install keepalived
--------------------------------------------
[root@Apache2 ~]# yum -y install keepalived

3、配置Apache1服务器上的Keepalived

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
[root@Apache1 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
   notification_email {
   root@localhost
   }
   notification_email_from admin@allen.com
   smtp_server 172.16.0.0
   smtp_connect_timeout 30
   router_id LVS_ALLEN
}
vrrp_script chk_httpd {
    script "killall -0 httpd"
    interval 1
    weight -2
}
vrrp_instance httpd_1 {
    state MASTER
    interface eth0
    virtual_router_id 58
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1058
    }
    virtual_ipaddress {
    172.16.14.10
    }
    track_script {
    chk_httpd
    }
}
[root@Apache1 ~]# service keepalived start
[root@Apache1 ~]# chkconfig keepalived on
[root@Apache1 ~]# chkconfig --list keepalived
keepalived      0:off   1:off   2:on    3:on    4:on    5:on    6:off
[root@Apache1 ~]# ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:2c:1a:24 brd ff:ff:ff:ff:ff:ff
    inet 172.16.14.1/16 brd 172.16.255.255 scope global eth0
    inet 172.16.14.10/32 scope global eth0
    inet6 fe80::20c:29ff:fe2c:1a24/64 scope link
       valid_lft forever preferred_lft forever

4、配置Apache2服务器上的Keepalived

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
[root@Apache2 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
   notification_email {
   root@localhost
   }
   notification_email_from admin@allen.com
   smtp_server 172.16.0.0
   smtp_connect_timeout 30
   router_id LVS_ALLEN
}
vrrp_script chk_httpd {
    script "killall -0 httpd"
    interval 1
    weight -2
}
vrrp_instance httpd_1 {
    state BACKUP
    interface eth0
    virtual_router_id 58
    priority 99
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1058
    }
    virtual_ipaddress {
    172.16.14.10
    }
    track_script {
    chk_httpd
    }
}
[root@Apache2 ~]# service keepalived start
[root@Apache2 ~]# chkconfig --list keepalived
keepalived      0:off   1:off   2:on    3:on    4:on    5:on    6:off

5、使用"www.allen.com" 域名访问,验证是否能访问到论坛;由于没有DNS服务器解析,修改了"hosts"文件;如:

1
2
3
######添加如下内容解析
C:\Windows\System32\drivers\etc\hosts
172.16.14.10    www.allen.com

6、模拟前端一台服务器出现故障;查看虚拟IP是否转移

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
######停止Apache1服务器上的Httpd服务来模拟故障;并查看IP
[root@Apache1 ~]# service httpd stop
[root@Apache1 ~]# ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:2c:1a:24 brd ff:ff:ff:ff:ff:ff
    inet 172.16.14.1/16 brd 172.16.255.255 scope global eth0
    inet6 fe80::20c:29ff:fe2c:1a24/64 scope link
       valid_lft forever preferred_lft forever
========================================================================
######查看Apache2服务器上的IP
[root@Apache2 ~]# ip addr show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 00:0c:29:ec:f6:3f brd ff:ff:ff:ff:ff:ff
    inet 172.16.14.2/16 brd 172.16.255.255 scope global eth0
    inet 172.16.14.10/32 scope global eth0
    inet6 fe80::20c:29ff:feec:f63f/64 scope link
       valid_lft forever preferred_lft forever

7、从上一步可以看出,虚拟IP地址已成功转移,说明还能正常提供服务,可以再次访问测试;如果服务器修复好重新上线,虚拟IP还会转移回去;这里就不再测试

到此,基于Apache做反向代理实现了Tomcat的负载均衡;而Keepalived实现了前端服务器的高可用;关于session保存的问题,方案有很多,比如可以保存到"memcached"、"redis"等,使用哪种方案具体还要根据自己的需求而定...

Apache+Tomcat构建Tomcat负载均衡集群的更多相关文章

  1. Nginx+Tomcat搭建高性能负载均衡集群

    一.       工具   nginx-1.8.0 apache-tomcat-6.0.33 二.    目标   实现高性能负载均衡的Tomcat集群: 三.    步骤   1.首先下载Nginx ...

  2. Nginx+Tomcat搭建高性能负载均衡集群(转)

    转载自:http://blog.csdn.net/wang379275614/article/details/47778201 一.       工具 nginx-1.8.0 apache-tomca ...

  3. Nginx+Tomcat搭建高性能负载均衡集群的实现方法

    一.    目标实现高性能负载均衡的Tomcat集群: 二.步骤 1.首先下载Nginx,要下载稳定版: 2.然后解压两个Tomcat,分别命名为apache-tomcat-6.0.33-1和apac ...

  4. LVS+Keepalived+Nginx+Tomcat高可用负载均衡集群配置(DR模式,一个VIP,多个端口)

    一.概述 LVS作用:实现负载均衡 Keepalived作用:监控集群系统中各个服务节点的状态,HA cluster. 配置LVS有两种方式: 1. 通过ipvsadm命令行方式配置 2. 通过Red ...

  5. 【转】Nginx+Tomcat搭建高性能负载均衡集群

    最近对负载均衡比较感兴趣,研究了公司的负载均衡的配置,用的是阿里的SLB,相当于不用运维,只需要在后台进行简单的配置就能完成Tomcat的负载均衡,索性在网上找了几篇文章去尝试搭建一个集群,然而很多都 ...

  6. 构建LVS负载均衡集群——NAT模式(最简单方式)

    一.装备一台lvs调度器主机要求两个网卡一个为内部局域网ip,一个为公网ip #IP地址设置过程不再重复 [root@localhost ~]# ip a | grep eth0 #内网ip : et ...

  7. Nginx+Tomcat搭建高性能负载均衡集群--Windows本地测试版

    链接:http://www.cnblogs.com/wbyp/p/6860744.html

  8. 高性能Linux服务器 第11章 构建高可用的LVS负载均衡集群

    高性能Linux服务器 第11章 构建高可用的LVS负载均衡集群 libnet软件包<-依赖-heartbeat(包含ldirectord插件(需要perl-MailTools的rpm包)) l ...

  9. Apache+tomcat+mod_jk+centos6.2负载均衡集群配置--转载

    转载地址:http://blog.163.com/chenhui_java/blog/static/17267249420128101191860/ 注: 由于长期受转载毒害,所以本人日志均是原创:其 ...

  10. Linux平台上搭建apache+tomcat负载均衡集群

    传统的Java Web项目是通过tomcat来运行和发布的.但在实际的企业应用环境中,采用单一的tomcat来维持项目的运行是不现实的.tomcat 处理能力低,效率低,承受并发小(1000左右).当 ...

随机推荐

  1. Java中的4种代码块

    一.普通代码块 直接在一个方法中出现的{}就称为普通代码块,例子程序如下: public class CodeDemo01{ public static void main(String[] args ...

  2. Dynamics AX 2012 R2 报表部署权限错误

    今天,Reinhard在 Deploy AX Reporting时,发生权限错误. 配置 ID: HOSTMSSQLSERVER 描述: HOST@MSSQLSERVER 默认值: True 报表服务 ...

  3. Dynamics AX 2012 R2 RemoteApp导出项目报错

        今天,Reinhard使用RemoteApp的方式登陆AX开发环境,对项目文件进行修改后,习惯性地将项目导出到Reinhard的电脑上,做个备份.但是导出时弹出错误提示框,报以下错误:     ...

  4. 移动web前端之meta标签

    最近这段时间忙着做web移动端,东西跟pc端还是有区别的.这个月也学到了不少东西,太多了就从头开始,先总结meta标签吧. 主要标签内容和注释如下: <meta charset="UT ...

  5. Script 简单语句的练习题

    猜拳 <body>请输入剪刀或者石头或者布:<br /><input type="text" id="A"/><inp ...

  6. ViewPager With FragmentPagerAdapter

    采用PagerAdapter中的FragmentPagerAdapter来实现页面切换,适用于a handful of typically more static fragments to be pa ...

  7. python importlib

    api 文档 importlib.import_module(name, package=None) Import a module. The name argument specifies what ...

  8. 用JavaBean实现数据库的连接和关闭,在jsp页面输出数据库中student表中学生的信息

    package com.hanqi.test; import java.sql.*; public class XveSheng { Connection conn; Statement st; Re ...

  9. jQuery表单元素非空验证

    <script type="text/javascript">                $(function(){          /************* ...

  10. 程序源系统与当前系统不一致:Carry out repairs in non-original systems only if urgent

    声明:原创作品,转载时请注明文章来自SAP师太技术博客( 博/客/园www.cnblogs.com):www.cnblogs.com/jiangzhengjun,并以超链接形式标明文章原始出处,否则将 ...