利用Nginx+Redis+Tomcat实现session共享
一、说明
OS: CentOS release 6.8 (Final)
nginx: /1.12.2
redis: 3.2.11
tomcat: 7.0.84
jdk: 1.7
应用安装目录： /home/server
二、安装配置tomcat
1、配置jdk，省略
2、下载tomcat
wget https://mirror.bit.edu.cn/apache/tomcat/tomcat-7/v7.0.84/bin/apache-tomcat-7.0.84.zip
解压、并复制2份放在应用目录下，分别为
/home/server/tomcat-session-9001/
/home/server/tomcat-session-9002/
1、分别修改如下文件端口为9001、9002
/home/server/tomcat-session-9001/conf/server.xml
/home/server/tomcat-session-9002/conf/server.xml
2、修改/home/server/tomcat-session-9001/conf/context.xml、/home/server/tomcat-session-9002/conf/context.xml 文件，添加如下配置
<Valve className="com.radiadesign.catalina.session.RedisSessionHandlerValve" />
<Manager className="com.radiadesign.catalina.session.RedisSessionManager"
host="127.0.0.1"
port="9379"
database="0"
maxInactiveInterval="60" />
注：这里用的redis端口，需要另外安装，并配置9379端口
3、分别在2个tomcat的/webapps/ROOT/下，编辑s.jsp
cat /home/server/tomcat-session-9001/webapps/ROOT/s.jsp
<%=session.getId() %>
cat /home/server/tomcat-session-9002/webapps/ROOT/s.jsp
<%=session.getId() %>
如下测试访问，可正常获取session
$ curl https://localhost:9001/s.jsp
5396F4EBA7F27972469EC719BC778C8C
$ curl https://localhost:9002/s.jsp
23D5CC097EA6D038D53EEF11384CA04C
4、上传commons-pool-1.5.5.jar、jedis-2.0.0.jar、tomcat-redis-session-manager-1.2-tomcat-7-java-7.jar 这三个jar包至tomcat的lib目录下，9001、9002两个tomcat都需要
注：如果自己下载不到，可以联系我提供
三、安装redis
wget https://download.redis.io/releases/redis-3.2.11.tar.gz
tar zxvf redis-3.2.11.tar.gz
cd redis-3.2.11
make
make install
cd utils/
./install_server.sh
根据提示，进行安装即可
四、安装nginx配置tomcat负载
yum install pcre pcre-devel openssl-devel perl gcc gcc-c++ make -y
rpm -Uvh https://nginx.org/packages/centos/6/noarch/RPMS/nginx-release-centos-6-0.el6.ngx.noarch.rpm
yum install nginx
service nginx start
# vim /etc/nginx/conf.d/session.conf
upstream session {
server 127.0.0.1:9001 weight=10 max_fails=3 fail_timeout=30s;
server 127.0.0.1:9002 weight=10 max_fails=3 fail_timeout=30s;
keepalive 50;
}
server {
listen 9000;
server_name localhost;
access_log /var/log/nginx/session.log main;
location / {
proxy_pass https://session;
}
}
# /usr/sbin/nginx -t
# /usr/sbin/nginx -s reload
五、访问测试
访问curl https://localhost:9000/s.jsp 测试
登陆redis，查看数据
至此，利用Nginx+Redis+Tomcat实现session共享配置完成。
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