通过Nginx+Tomcat+Redis实现持久会话

vim /etc/nginx/nginx.conf
http {
...
upstream tomcatservers {
 server 172.18.68.21:8080;
 server 172.18.68.22:8080;
 }
...
server {
...
 location / {
  proxy_pass http://tomcatservers;
  }
...
}
}
systemctl start nginx

cp solo-2.4.1.war /usr/share/tomcat/webapps/
systemctl restart tomcat

cd /usr/share/tomcat/webapps/solo-2.4/WEB-INF/classes
vim latke.properties
 #### Server ####
 # 配置协议
 serverScheme=http
 # 配置客户端访问站点时的域名或IP，也就是前端Nginx的域名
 serverHost=www.shuaiguoxia.com
 # 使用的端口
 serverPort=80

#### H2 runtime ####
#runtimeDatabase=H2
#jdbc.username=root
#jdbc.password=
#jdbc.driver=org.h2.Driver
#jdbc.URL=jdbc:h2:~/solo_h2/db
#jdbc.pool=h2
#
#### MySQL runtime ####
runtimeDatabase=MYSQL
jdbc.username=root      # 用户名
jdbc.password=123456     # 密码
jdbc.driver=com.mysql.jdbc.Driver
jdbc.URL=jdbc:mysql://172.18.68.41:3306/solo?useUnicode=yes&characterEncoding=utf8
jdbc.pool=druid

commons-pool2-2.2.jar
jedis-2.5.2.jar
tomcat-redis-session-manager-2.0.0.jar

cp commons-pool2-2.2.jar /usr/share/tomcat/lib/
cp jedis-2.5.2.jar
cp tomcat-redis-session-manager-2.0.0.jar

vim /etc/tomcat/context.xml
#
 <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" />
 <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" 
 host="172.18.68.31" 
 port="6379" 
 database="0" 
 maxInactiveInterval="60" />

ntpdate 172.18.0.1
iptables -F

vim /etc/redis.conf
bind 0.0.0.0       # 监听所有IP
port 6379        # 设定监听的端口
requirepass 123456      # 设定连接的密码

bind 0.0.0.0       # 监听所有IP
slaveof 172.18.68.31 6379    # 设定主节点的IP+端口
masterauth 123456      # 主节点的连接密码
slave-read-only yes      # 从节点为只读

shell > redis-cli -h 172.18.68.32  # 连接从服务器redis
127.0.0.1:6379> INFO replication   # 查看主从复制状态信息
# Replication
role:slave
master_host:172.18.68.31     # 主节点IP
master_port:6379       # 主节点的端口
master_link_status:up     # up为主从同步正常
master_last_io_seconds_ago:9
master_sync_in_progress:0
slave_repl_offset:1420
slave_priority:100
slave_read_only:1
connected_slaves:0
master_repl_offset:0
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

yum install Mariadb
#
#
#运行初始化脚本对MySQL进行
cd /usr/local/mysql/bin
mysql_secure_installation   #MySql初始化脚本，以下为每一项的翻译
 先回车
 是否设置root密码
 输入密码
 确认密码
 是否设置匿名用户
 是否允许root远程登录
 删除test数据库
 现在是否生效

shell > vim /etc/my.cnf
server-id=1           #节点ID
log-bin=mysql-bin         #指定二进制日志前缀
relay-log=mysql-relay-bin       #指定relaylog日志前缀
replicate-wild-ignore-table=mysql.%     #排除要复制的表
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%

Musql > grant replication slave on *.* to 
 'slave_user'@'10.0.0.67' identified by '123456';

shell > vim /etc/my.cnf
server-id=2           #节点ID
log-bin=mysql-bin         #指定二进制日志前缀
relay-log=mysql-relay-bin       #指定relaylog日志前缀
replicate-wild-ignore-table=mysql.%     #排除要复制的表
replicate-wild-ignore-table=test.%
replicate-wild-ignore-table=information_schema.%

# 在MySQL主服务器中查询结果
MariaDB [(none)]> show master status\G;
*************************** 1. row ***************************
  File: master-log.000003
  Position: 18893845
  Binlog_Do_DB: 
  Binlog_Ignore_DB: 

MySQL > change master to 
master_host='10.0.0.66',
master_user='slave_user',
master_password='123456',
master_log_file='mysql-bin.000001',
master_log_pos=106;`

MariaDB [(none)]> show slave status\G;
*************************** 1. row ***************************
   Slave_IO_State: Waiting for master to send event
    Master_Host: 172.18.68.41
    Master_User: slave-user
    Master_Port: 3306
   Connect_Retry: 60
   Master_Log_File: master-log.000002
  Read_Master_Log_Pos: 245
   Relay_Log_File: mysql-relay-bin.000002
   Relay_Log_Pos: 530
 Relay_Master_Log_File: master-log.000002
   Slave_IO_Running: Yes
  Slave_SQL_Running: Yes